Crater for #148756#149137

JonathanBrouwer · 2025-11-20T10:49:42Z

cc #148756

Signed-off-by: Jonathan Brouwer <[email protected]>

JonathanBrouwer · 2025-11-20T10:49:51Z

@bors try

… r=<try> Crater for #148756

rust-log-analyzer · 2025-11-20T11:29:36Z

The job aarch64-gnu-llvm-20-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

To only update this specific test, also pass `--test-args attributes/codegen_attr_on_required_trait_method.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/attributes/codegen_attr_on_required_trait_method.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/attributes/codegen_attr_on_required_trait_method" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
error: `#[cold]` attribute cannot be used on required trait methods
##[error]  --> /checkout/tests/ui/attributes/codegen_attr_on_required_trait_method.rs:6:5
   |
---
---- [ui] tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/feature-gates/issue-43106-gating-of-builtin-attrs" "-A" "unused" "-W" "unused_attributes" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"
stdout: none
--- stderr -------------------------------
warning: `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:529:17
   |
LL |     mod inner { #![macro_escape] }
   |                 ^^^^^^^^^^^^^^^^
   |
   = help: try an outer attribute: `#[macro_use]`

warning: `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
---

warning: unknown lint: `x5400`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:43:9
   |
LL | #![warn(x5400)] //~ WARN unknown lint: `x5400`
   |         ^^^^^
   |
note: the lint level is defined here
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:37:28
   |
LL | #![warn(unused_attributes, unknown_lints)]
   |                            ^^^^^^^^^^^^^

warning: unknown lint: `x5300`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:44:10
   |
LL | #![allow(x5300)] //~ WARN unknown lint: `x5300`
   |          ^^^^^

warning: unknown lint: `x5200`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:45:11
   |
LL | #![forbid(x5200)] //~ WARN unknown lint: `x5200`
   |           ^^^^^

warning: unknown lint: `x5100`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:46:9
   |
LL | #![deny(x5100)] //~ WARN unknown lint: `x5100`
   |         ^^^^^

warning: unknown lint: `x5400`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:111:8
   |
LL | #[warn(x5400)]
   |        ^^^^^

warning: unknown lint: `x5400`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:114:25
   |
LL |     mod inner { #![warn(x5400)] }
   |                         ^^^^^

warning: unknown lint: `x5400`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:117:12
   |
LL |     #[warn(x5400)] fn f() { }
   |            ^^^^^

warning: unknown lint: `x5400`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:120:12
   |
LL |     #[warn(x5400)] struct S;
   |            ^^^^^

warning: unknown lint: `x5400`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:123:12
   |
LL |     #[warn(x5400)] type T = S;
   |            ^^^^^

warning: unknown lint: `x5400`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:126:12
   |
LL |     #[warn(x5400)] impl S { }
   |            ^^^^^

warning: unknown lint: `x5300`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:130:9
   |
LL | #[allow(x5300)]
   |         ^^^^^

warning: unknown lint: `x5300`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:133:26
   |
LL |     mod inner { #![allow(x5300)] }
   |                          ^^^^^

warning: unknown lint: `x5300`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:136:13
   |
LL |     #[allow(x5300)] fn f() { }
   |             ^^^^^

warning: unknown lint: `x5300`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:139:13
   |
LL |     #[allow(x5300)] struct S;
   |             ^^^^^

warning: unknown lint: `x5300`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:142:13
   |
LL |     #[allow(x5300)] type T = S;
   |             ^^^^^

warning: unknown lint: `x5300`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:145:13
   |
LL |     #[allow(x5300)] impl S { }
   |             ^^^^^

warning: unknown lint: `x5200`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:149:10
   |
LL | #[forbid(x5200)]
   |          ^^^^^

warning: unknown lint: `x5200`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:152:27
   |
LL |     mod inner { #![forbid(x5200)] }
   |                           ^^^^^

warning: unknown lint: `x5200`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:155:14
   |
LL |     #[forbid(x5200)] fn f() { }
   |              ^^^^^

warning: unknown lint: `x5200`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:158:14
   |
LL |     #[forbid(x5200)] struct S;
   |              ^^^^^

warning: unknown lint: `x5200`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:161:14
   |
LL |     #[forbid(x5200)] type T = S;
   |              ^^^^^

warning: unknown lint: `x5200`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:164:14
   |
LL |     #[forbid(x5200)] impl S { }
   |              ^^^^^

warning: unknown lint: `x5100`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:168:8
   |
LL | #[deny(x5100)]
   |        ^^^^^

warning: unknown lint: `x5100`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:171:25
   |
LL |     mod inner { #![deny(x5100)] }
   |                         ^^^^^

warning: unknown lint: `x5100`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:174:12
   |
LL |     #[deny(x5100)] fn f() { }
   |            ^^^^^

warning: unknown lint: `x5100`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:177:12
   |
LL |     #[deny(x5100)] struct S;
   |            ^^^^^

warning: unknown lint: `x5100`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:180:12
   |
LL |     #[deny(x5100)] type T = S;
   |            ^^^^^

warning: unknown lint: `x5100`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:183:12
   |
LL |     #[deny(x5100)] impl S { }
   |            ^^^^^

error: `#[link_section]` attribute cannot be used on required trait methods
##[error]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:715:9
   |
---
...
LL | / mod link {
LL | |     //~^ NOTE not an `extern` block
LL | |
LL | |     mod inner { #![link(name = "x")] }
...  |
LL | | }
   | |_- not an `extern` block
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
---

warning: attribute should be applied to an `extern` block with non-Rust ABI
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:72:1
   |
LL | #![link(name = "x")] //~ WARN attribute should be applied to an `extern` block
   | ^^^^^^^^^^^^^^^^^^^^ not an `extern` block
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: the feature `rust1` has been stable since 1.0.0 and no longer requires an attribute to enable
---

warning: crate-level attribute should be in the root module
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:505:17
   |
LL |     mod inner { #![reexport_test_harness_main="2900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:508:5
   |
LL |     #[reexport_test_harness_main = "2900"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![reexport_test_harness_main = "2900"] fn f() { }
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:512:5
   |
LL |     #[reexport_test_harness_main = "2900"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![reexport_test_harness_main = "2900"] struct S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:516:5
   |
LL |     #[reexport_test_harness_main = "2900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![reexport_test_harness_main = "2900"] type T = S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:520:5
   |
LL |     #[reexport_test_harness_main = "2900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![reexport_test_harness_main = "2900"] impl S { }
   |      +

warning: attribute should be applied to an `extern` block with non-Rust ABI
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:749:17
   |
LL |     mod inner { #![link(name = "x")] }
   |     ------------^^^^^^^^^^^^^^^^^^^^-- not an `extern` block
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to an `extern` block with non-Rust ABI
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:754:5
   |
LL |     #[link(name = "x")] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^ ---------- not an `extern` block
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to an `extern` block with non-Rust ABI
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:759:5
   |
LL |     #[link(name = "x")] struct S;
   |     ^^^^^^^^^^^^^^^^^^^ --------- not an `extern` block
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to an `extern` block with non-Rust ABI
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:764:5
   |
LL |     #[link(name = "x")] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^ ----------- not an `extern` block
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to an `extern` block with non-Rust ABI
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:769:5
   |
LL |     #[link(name = "x")] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^ ---------- not an `extern` block
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: attribute should be applied to an `extern` block with non-Rust ABI
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:774:5
   |
LL |     #[link(name = "x")] extern "Rust" {}
   |     ^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

warning: crate-level attribute should be in the root module
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:823:17
   |
LL |     mod inner { #![windows_subsystem="windows"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:826:5
   |
LL |     #[windows_subsystem = "windows"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![windows_subsystem = "windows"] fn f() { }
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:830:5
   |
LL |     #[windows_subsystem = "windows"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![windows_subsystem = "windows"] struct S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:834:5
   |
LL |     #[windows_subsystem = "windows"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![windows_subsystem = "windows"] type T = S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:838:5
   |
LL |     #[windows_subsystem = "windows"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![windows_subsystem = "windows"] impl S { }
   |      +

warning: crate-level attribute should be in the root module
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:873:17
   |
LL |     mod inner { #![crate_type="0800"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:876:5
   |
LL |     #[crate_type = "0800"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![crate_type = "0800"] fn f() { }
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:880:5
   |
---

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:884:5
   |
LL |     #[crate_type = "0800"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![crate_type = "0800"] type T = S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:888:5
   |
LL |     #[crate_type = "0800"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![crate_type = "0800"] impl S { }
   |      +

warning: crate-level attribute should be in the root module
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:897:17
   |
LL |     mod inner { #![feature(x0600)] }
   |                 ^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:900:5
   |
LL |     #[feature(x0600)] fn f() { }
   |     ^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![feature(x0600)] fn f() { }
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:904:5
   |
LL |     #[feature(x0600)] struct S;
   |     ^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![feature(x0600)] struct S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:908:5
   |
LL |     #[feature(x0600)] type T = S;
   |     ^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![feature(x0600)] type T = S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:912:5
   |
LL |     #[feature(x0600)] impl S { }
   |     ^^^^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![feature(x0600)] impl S { }
   |      +

warning: crate-level attribute should be in the root module
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:922:17
   |
LL |     mod inner { #![no_main] }
   |                 ^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:925:5
   |
LL |     #[no_main] fn f() { }
   |     ^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![no_main] fn f() { }
---

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:933:5
   |
LL |     #[no_main] type T = S;
   |     ^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![no_main] type T = S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:937:5
   |
LL |     #[no_main] impl S { }
   |     ^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![no_main] impl S { }
   |      +

warning: crate-level attribute should be in the root module
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:946:17
   |
LL |     mod inner { #![no_builtins] }
   |                 ^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:949:5
   |
LL |     #[no_builtins] fn f() { }
   |     ^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![no_builtins] fn f() { }
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:953:5
   |
LL |     #[no_builtins] struct S;
   |     ^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![no_builtins] struct S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:957:5
   |
LL |     #[no_builtins] type T = S;
   |     ^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![no_builtins] type T = S;
   |      +

warning: crate-level attribute should be an inner attribute
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:961:5
   |
LL |     #[no_builtins] impl S { }
   |     ^^^^^^^^^^^^^^
   |
help: add a `!`
   |
LL |     #![no_builtins] impl S { }
   |      +

warning: `#[macro_use]` attribute cannot be used on functions
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:191:5
   |
---

warning: `#[macro_use]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:203:5
   |
LL |     #[macro_use] type T = S;
   |     ^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[macro_use]` can be applied to crates, extern crates, and modules

warning: `#[macro_use]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:209:5
   |
LL |     #[macro_use] impl S { }
   |     ^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[macro_use]` can be applied to crates, extern crates, and modules

---

warning: `#[macro_export]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:222:17
   |
LL |     mod inner { #![macro_export] }
   |                 ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[macro_export]` can only be applied to macro defs

---

warning: `#[macro_export]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:246:5
   |
LL |     #[macro_export] impl S { }
   |     ^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[macro_export]` can only be applied to macro defs

warning: `#[path]` attribute cannot be used on functions
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:289:5
   |
LL |     #[path = "3800"] fn f() { }
   |     ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[path]` can only be applied to modules

warning: `#[path]` attribute cannot be used on structs
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:295:5
   |
LL |     #[path = "3800"]  struct S;
   |     ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[path]` can only be applied to modules

warning: `#[path]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:301:5
   |
LL |     #[path = "3800"] type T = S;
   |     ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[path]` can only be applied to modules

warning: `#[path]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:307:5
   |
LL |     #[path = "3800"] impl S { }
   |     ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[path]` can only be applied to modules

---

warning: `#[automatically_derived]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:320:17
   |
LL |     mod inner { #![automatically_derived] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[automatically_derived]` can only be applied to trait impl blocks

warning: `#[automatically_derived]` attribute cannot be used on functions
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:326:5
   |
LL |     #[automatically_derived] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[automatically_derived]` can only be applied to trait impl blocks

---

warning: `#[automatically_derived]` attribute cannot be used on traits
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:344:5
   |
LL |     #[automatically_derived] trait W { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[automatically_derived]` can only be applied to trait impl blocks

warning: `#[automatically_derived]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:350:5
   |
LL |     #[automatically_derived] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[automatically_derived]` can only be applied to trait impl blocks

---

warning: `#[no_mangle]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:365:17
   |
LL |     mod inner { #![no_mangle] }
   |                 ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_mangle]` can be applied to functions and statics

---

warning: `#[no_mangle]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:379:5
   |
LL |     #[no_mangle] type T = S;
   |     ^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_mangle]` can be applied to functions and statics

warning: `#[no_mangle]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:385:5
   |
LL |     #[no_mangle] impl S { }
   |     ^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_mangle]` can be applied to functions and statics

warning: `#[no_mangle]` attribute cannot be used on required trait methods
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:392:9
   |
LL |         #[no_mangle] fn foo();
   |         ^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_mangle]` can be applied to functions, inherent methods, statics, and trait methods in impl blocks

warning: `#[no_mangle]` attribute cannot be used on provided trait methods
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:398:9
   |
LL |         #[no_mangle] fn bar() {}
   |         ^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_mangle]` can be applied to functions, inherent methods, statics, and trait methods in impl blocks

---

warning: `#[should_panic]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:412:17
   |
LL |     mod inner { #![should_panic] }
   |                 ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[should_panic]` can only be applied to functions

---

warning: `#[should_panic]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:432:5
   |
LL |     #[should_panic] impl S { }
   |     ^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[should_panic]` can only be applied to functions

---

warning: `#[ignore]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:445:17
   |
LL |     mod inner { #![ignore] }
   |                 ^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[ignore]` can only be applied to functions

---

warning: `#[ignore]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:465:5
   |
LL |     #[ignore] impl S { }
   |     ^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[ignore]` can only be applied to functions

warning: `#[no_implicit_prelude]` attribute cannot be used on functions
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:476:5
   |
LL |     #[no_implicit_prelude] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_implicit_prelude]` can be applied to crates and modules

warning: `#[no_implicit_prelude]` attribute cannot be used on structs
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:482:5
   |
LL |     #[no_implicit_prelude] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_implicit_prelude]` can be applied to crates and modules

warning: `#[no_implicit_prelude]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:488:5
   |
LL |     #[no_implicit_prelude] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_implicit_prelude]` can be applied to crates and modules

warning: `#[no_implicit_prelude]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:494:5
   |
LL |     #[no_implicit_prelude] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[no_implicit_prelude]` can be applied to crates and modules

warning: `#[macro_escape]` attribute cannot be used on functions
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:533:5
   |
LL |     #[macro_escape] fn f() { }
   |     ^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[macro_escape]` can be applied to crates, extern crates, and modules

---

warning: `#[macro_escape]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:545:5
   |
LL |     #[macro_escape] type T = S;
   |     ^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[macro_escape]` can be applied to crates, extern crates, and modules

warning: `#[macro_escape]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:551:5
   |
LL |     #[macro_escape] impl S { }
   |     ^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[macro_escape]` can be applied to crates, extern crates, and modules

---
   |
note: This attribute does not have an `!`, which means it is applied to this module
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:560:1
   |
LL | / mod no_std {
LL | |     //~^ NOTE This attribute does not have an `!`, which means it is applied to this module
LL | |     mod inner { #![no_std] }
...  |
LL | | }
   | |_^

warning: the `#![no_std]` attribute can only be used at the crate root
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:562:17
   |
LL |     mod inner { #![no_std] }
   |                 ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![no_std]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:565:5
   |
LL |     #[no_std] fn f() { }
   |     ^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this function
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:565:15
   |
LL |     #[no_std] fn f() { }
   |               ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![no_std]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:569:5
   |
---

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![no_std]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:573:5
   |
LL |     #[no_std] type T = S;
   |     ^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this type alias
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:573:15
   |
LL |     #[no_std] type T = S;
   |               ^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![no_std]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:577:5
   |
LL |     #[no_std] impl S { }
   |     ^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this implementation block
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:577:15
   |
LL |     #[no_std] impl S { }
   |               ^^^^^^^^^^

warning: `#[cold]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:599:1
   |
---

warning: `#[cold]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:606:17
   |
LL |     mod inner { #![cold] }
   |                 ^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[cold]` can only be applied to functions

---

warning: `#[cold]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:620:5
   |
LL |     #[cold] type T = S;
   |     ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[cold]` can only be applied to functions

warning: `#[cold]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:626:5
   |
LL |     #[cold] impl S { }
   |     ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[cold]` can only be applied to functions

---

warning: `#[link_name]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:646:17
   |
LL |     mod inner { #![link_name="1900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[link_name]` can be applied to foreign functions and foreign statics

---

warning: `#[link_name]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:664:5
   |
LL |     #[link_name = "1900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[link_name]` can be applied to foreign functions and foreign statics

warning: `#[link_name]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:670:5
   |
LL |     #[link_name = "1900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[link_name]` can be applied to foreign functions and foreign statics

---

warning: `#[link_section]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:683:17
   |
LL |     mod inner { #![link_section="1800"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[link_section]` can be applied to functions and statics

---

warning: `#[link_section]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:697:5
   |
LL |     #[link_section = "1800"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[link_section]` can be applied to functions and statics

warning: `#[link_section]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:703:5
   |
LL |     #[link_section = "1800"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[link_section]` can be applied to functions and statics

---

warning: `#[must_use]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:794:1
   |
LL | #[must_use] //~ WARN attribute cannot be used on
   | ^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[must_use]` can be applied to data types, functions, traits, and unions

warning: `#[must_use]` attribute cannot be used on modules
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:799:17
   |
LL |     mod inner { #![must_use] } //~ WARN attribute cannot be used on
   |                 ^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[must_use]` can be applied to data types, functions, traits, and unions

warning: `#[must_use]` attribute cannot be used on type aliases
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:808:5
   |
LL |     #[must_use] type T = S; //~ WARN attribute cannot be used on
   |     ^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[must_use]` can be applied to data types, functions, traits, and unions

warning: `#[must_use]` attribute cannot be used on inherent impl blocks
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:813:5
   |
LL |     #[must_use] impl S { } //~ WARN attribute cannot be used on
   |     ^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[must_use]` can be applied to data types, functions, traits, and unions

---
   |
note: This attribute does not have an `!`, which means it is applied to this module
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:847:1
   |
LL | / mod crate_name {
LL | | //~^ NOTE This attribute does not have an `!`, which means it is applied to this module
LL | |     mod inner { #![crate_name="0900"] }
...  |
LL | | }
   | |_^

warning: the `#![crate_name]` attribute can only be used at the crate root
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:849:17
   |
LL |     mod inner { #![crate_name="0900"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![crate_name]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:852:5
   |
LL |     #[crate_name = "0900"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this function
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:852:28
   |
LL |     #[crate_name = "0900"] fn f() { }
   |                            ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![crate_name]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:856:5
   |
---

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![crate_name]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:860:5
   |
LL |     #[crate_name = "0900"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this type alias
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:860:28
   |
LL |     #[crate_name = "0900"] type T = S;
   |                            ^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![crate_name]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:864:5
   |
LL |     #[crate_name = "0900"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this implementation block
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:864:28
   |
LL |     #[crate_name = "0900"] impl S { }
   |                            ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![recursion_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:966:1
   |
LL | #[recursion_limit="0200"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this module
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:968:1
   |
LL | / mod recursion_limit {
LL | |     //~^ NOTE This attribute does not have an `!`, which means it is applied to this module
LL | |     mod inner { #![recursion_limit="0200"] }
...  |
LL | | }
   | |_^

warning: the `#![recursion_limit]` attribute can only be used at the crate root
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:970:17
   |
LL |     mod inner { #![recursion_limit="0200"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![recursion_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:973:5
   |
LL |     #[recursion_limit="0200"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this function
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:973:31
   |
LL |     #[recursion_limit="0200"] fn f() { }
   |                               ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![recursion_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:977:5
   |
LL |     #[recursion_limit="0200"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this struct
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:977:31
   |
LL |     #[recursion_limit="0200"] struct S;
   |                               ^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![recursion_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:981:5
   |
LL |     #[recursion_limit="0200"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this type alias
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:981:31
   |
LL |     #[recursion_limit="0200"] type T = S;
   |                               ^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![recursion_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:985:5
   |
LL |     #[recursion_limit="0200"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this implementation block
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:985:31
   |
LL |     #[recursion_limit="0200"] impl S { }
   |                               ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![type_length_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:990:1
   |
LL | #[type_length_limit="0100"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this module
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:992:1
   |
LL | / mod type_length_limit {
LL | |     //~^ NOTE This attribute does not have an `!`, which means it is applied to this module
LL | |     mod inner { #![type_length_limit="0100"] }
...  |
LL | | }
   | |_^

warning: the `#![type_length_limit]` attribute can only be used at the crate root
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:994:17
   |
LL |     mod inner { #![type_length_limit="0100"] }
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![type_length_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:997:5
   |
LL |     #[type_length_limit="0100"] fn f() { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this function
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:997:33
   |
LL |     #[type_length_limit="0100"] fn f() { }
   |                                 ^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![type_length_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:1001:5
   |
LL |     #[type_length_limit="0100"] struct S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this struct
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:1001:33
   |
LL |     #[type_length_limit="0100"] struct S;
   |                                 ^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![type_length_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:1005:5
   |
LL |     #[type_length_limit="0100"] type T = S;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this type alias
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:1005:33
   |
LL |     #[type_length_limit="0100"] type T = S;
   |                                 ^^^^^^^^^^^

warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![type_length_limit]`
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:1009:5
   |
LL |     #[type_length_limit="0100"] impl S { }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: This attribute does not have an `!`, which means it is applied to this implementation block
  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:1009:33
   |
LL |     #[type_length_limit="0100"] impl S { }
   |                                 ^^^^^^^^^^

warning: `#[should_panic]` attribute cannot be used on crates
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:50:1
   |
LL | #![should_panic] //~ WARN attribute cannot be used on
   | ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[should_panic]` can only be applied to functions

warning: `#[ignore]` attribute cannot be used on crates
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:54:1
   |
LL | #![ignore] //~ WARN attribute cannot be used on
   | ^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[ignore]` can only be applied to functions

warning: `#[proc_macro_derive]` attribute cannot be used on crates
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:63:1
   |
LL | #![proc_macro_derive(Test)] //~ WARN attribute cannot be used on
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[proc_macro_derive]` can only be applied to functions

warning: `#[cold]` attribute cannot be used on crates
##[warning]  --> /checkout/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.rs:68:1
   |
LL | #![cold] //~ WARN attribute cannot be used on
   | ^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = help: `#[cold]` can only be applied to functions

rust-bors · 2025-11-20T13:06:16Z

☀️ Try build successful (CI)
Build commit: d83b142 (d83b14207998f47b18a34e930157ac0d7c18b16e, parent: 683dd08db5808c41baceef49368fc82a6c4767bb)

JonathanBrouwer · 2025-11-20T13:08:39Z

@craterbot check

craterbot · 2025-11-20T13:09:11Z

👌 Experiment pr-149137 created and queued.
🤖 Automatically detected try build d83b142
🔍 You can check out the queue and this experiment's details.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

craterbot · 2025-11-24T08:18:36Z

🚧 Experiment pr-149137 is now running

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

craterbot · 2025-11-26T02:03:47Z

🎉 Experiment pr-149137 is completed!
📊 267 regressed and 2 fixed (741156 total)
📊 1939 spurious results on the retry-regessed-list.txt, consider a retry¹ if this is a significant amount.
📰 Open the summary report.

⚠️ If you notice any spurious failure please add them to the denylist!
ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

re-run the experiment with crates=https://crater-reports.s3.amazonaws.com/pr-149137/retry-regressed-list.txt ↩

JonathanBrouwer added 3 commits November 9, 2025 17:55

Don't allow codegen attributes on trait methods

60d8902

Signed-off-by: Jonathan Brouwer <[email protected]>

Add regression test for codegen attributes on required trait methods

699748b

Signed-off-by: Jonathan Brouwer <[email protected]>

Make deny for crater

722cb35

rustbot added A-attributes Area: Attributes (`#[…]`, `#![…]`) S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Nov 20, 2025

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rust-bors bot added a commit that referenced this pull request Nov 20, 2025

Auto merge of #149137 - JonathanBrouwer:link_section_targets2_crater,…

d83b142

… r=<try> Crater for #148756

JonathanBrouwer mentioned this pull request Nov 20, 2025

Warn on codegen attributes on required trait methods #148756

Merged

jdonszelmann self-assigned this Nov 20, 2025

craterbot added S-waiting-on-crater Status: Waiting on a crater run to be completed. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Nov 20, 2025

traviscross added the I-lang-radar Items that are on lang's radar and will need eventual work or consideration. label Nov 20, 2025

craterbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-crater Status: Waiting on a crater run to be completed. labels Nov 26, 2025

JonathanBrouwer closed this Nov 26, 2025

rustbot removed the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Nov 26, 2025

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Crater for #148756#149137