Added detailed error code explanation for issue E0687 in Rust compiler.#72071

Polkaverse · 2020-05-10T06:15:10Z

Added proper error explanation for issue E0687 in the Rust compiler.
Error Code E0687

Sub Part of Issue #61137

rust-highfive · 2020-05-10T06:15:13Z

Some changes occurred in diagnostic error codes

rust-highfive · 2020-05-10T08:10:47Z

The job x86_64-gnu-llvm-8 of your PR failed (pretty log, raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

##[section]Starting: Linux x86_64-gnu-llvm-8
##[section]Starting: Initialize job
Agent name: 'Hosted Agent'
Agent machine name: 'fv-az578'
Current agent version: '2.168.2'
##[group]Operating System
16.04.6
LTS
LTS
##[endgroup]
##[group]Virtual Environment
Environment: ubuntu-16.04
Version: 20200430.2
Included Software: https://github.com/actions/virtual-environments/blob/ubuntu16/20200430.2/images/linux/Ubuntu1604-README.md
##[endgroup]
Agent running as: 'vsts'
Prepare build directory.
Set build variables.
Download all required tasks.
Download all required tasks.
Downloading task: Bash (3.163.1)
Checking job knob settings.
   Knob: AgentToolsDirectory = /opt/hostedtoolcache Source: ${AGENT_TOOLSDIRECTORY} 
   Knob: AgentPerflog = /home/vsts/perflog Source: ${VSTS_AGENT_PERFLOG} 
Start tracking orphan processes.
##[section]Finishing: Initialize job
##[section]Starting: Configure Job Name
==============================================================================
---
========================== Starting Command Output ===========================
[command]/bin/bash --noprofile --norc /home/vsts/work/_temp/4aacfec9-a0b8-4efc-88f7-ab9858207d39.sh

##[section]Finishing: Disable git automatic line ending conversion
##[section]Starting: Checkout rust-lang/rust@refs/pull/72071/merge to s
Task         : Get sources
Description  : Get sources from a repository. Supports Git, TfsVC, and SVN repositories.
Version      : 1.0.0
Author       : Microsoft
---
##[command]git remote add origin https://github.com/rust-lang/rust
##[command]git config gc.auto 0
##[command]git config --get-all http.https://github.com/rust-lang/rust.extraheader
##[command]git config --get-all http.proxy
##[command]git -c http.extraheader="AUTHORIZATION: basic ***" fetch --force --tags --prune --progress --no-recurse-submodules --depth=2 origin +refs/heads/*:refs/remotes/origin/* +refs/pull/72071/merge:refs/remotes/pull/72071/merge
---
 ---> cb2676f08729
Step 5/8 : ENV RUST_CONFIGURE_ARGS       --build=x86_64-unknown-linux-gnu       --llvm-root=/usr/lib/llvm-8       --enable-llvm-link-shared       --set rust.thin-lto-import-instr-limit=10
 ---> Using cache
 ---> df25ce111862
Step 6/8 : ENV SCRIPT python2.7 ../x.py test --exclude src/tools/tidy &&            python2.7 ../x.py test src/test/mir-opt --pass=build                                   --target=armv5te-unknown-linux-gnueabi &&            python2.7 ../x.py test src/tools/tidy
 ---> 599b9ac96b27
Step 7/8 : ENV NO_DEBUG_ASSERTIONS=1
 ---> Using cache
 ---> 091087e35a36
---
   Compiling fmt_macros v0.0.0 (/checkout/src/libfmt_macros)
   Compiling chalk-rust-ir v0.10.0
   Compiling rustc_ast_pretty v0.0.0 (/checkout/src/librustc_ast_pretty)
   Compiling rustc_hir v0.0.0 (/checkout/src/librustc_hir)
   Compiling rustc_query_system v0.0.0 (/checkout/src/librustc_query_system)
   Compiling chalk-solve v0.10.0
   Compiling rustc_hir_pretty v0.0.0 (/checkout/src/librustc_hir_pretty)
   Compiling rustc_parse v0.0.0 (/checkout/src/librustc_parse)
   Compiling rustc_ast_lowering v0.0.0 (/checkout/src/librustc_ast_lowering)
---
   Compiling fmt_macros v0.0.0 (/checkout/src/libfmt_macros)
   Compiling chalk-rust-ir v0.10.0
   Compiling rustc_ast_pretty v0.0.0 (/checkout/src/librustc_ast_pretty)
   Compiling rustc_hir v0.0.0 (/checkout/src/librustc_hir)
   Compiling rustc_query_system v0.0.0 (/checkout/src/librustc_query_system)
   Compiling chalk-solve v0.10.0
   Compiling rustc_hir_pretty v0.0.0 (/checkout/src/librustc_hir_pretty)
   Compiling rustc_parse v0.0.0 (/checkout/src/librustc_parse)
   Compiling rustc_ast_lowering v0.0.0 (/checkout/src/librustc_ast_lowering)
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28 


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/in-band-lifetimes/E0687/E0687.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args in-band-lifetimes/E0687.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/in-band-lifetimes/E0687.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/in-band-lifetimes/E0687" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/in-band-lifetimes/E0687/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
   |
   |
LL | fn foo(x: fn(&'a u32)) {} //~ ERROR must be explicitly
   |               ^^ in-band lifetime definition

error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
   |
   |
LL | fn bar(x: &Fn(&'a u32)) {} //~ ERROR must be explicitly
   |                ^^ in-band lifetime definition

error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
   |
   |
LL | fn baz(x: fn(&'a u32), y: &'a u32) {} //~ ERROR must be explicitly
   |               ^^ in-band lifetime definition

error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
   |
   |
LL |     fn bar(&self, x: fn(&'a u32)) {} //~ ERROR must be explicitly
   |                          ^^ in-band lifetime definition
error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0687`.

---
16 


The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/in-band-lifetimes/E0687_where/E0687_where.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args in-band-lifetimes/E0687_where.rs`
error: 1 errors occurred comparing output.
status: exit code: 1
status: exit code: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/in-band-lifetimes/E0687_where.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/in-band-lifetimes/E0687_where" "-A" "unused" "-Crpath" "-O" "-Cdebuginfo=0" "-Zunstable-options" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/in-band-lifetimes/E0687_where/auxiliary"
------------------------------------------

------------------------------------------
stderr:
stderr:
------------------------------------------
error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
   |
   |
LL | fn bar<F>(x: &F) where F: Fn(&'a u32) {} //~ ERROR must be explicitly
   |                               ^^ in-band lifetime definition

error[E0687]: lifetimes used in `fn` or `Fn` syntax must be explicitly declared using `<...>` binders
   |
   |
LL | fn baz(x: &impl Fn(&'a u32)) {} //~ ERROR must be explicitly
   |                     ^^ in-band lifetime definition
error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0687`.

---
thread 'main' panicked at 'Some tests failed', src/tools/compiletest/src/main.rs:348:22
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace


command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/compiletest" "--compile-lib-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib" "--run-lib-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib/rustlib/x86_64-unknown-linux-gnu/lib" "--rustc-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "--src-base" "/checkout/src/test/ui" "--build-base" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui" "--stage-id" "stage2-x86_64-unknown-linux-gnu" "--mode" "ui" "--target" "x86_64-unknown-linux-gnu" "--host" "x86_64-unknown-linux-gnu" "--llvm-filecheck" "/usr/lib/llvm-8/bin/FileCheck" "--nodejs" "/usr/bin/node" "--host-rustcflags" "-Crpath -O -Cdebuginfo=0 -Zunstable-options  -Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--target-rustcflags" "-Crpath -O -Cdebuginfo=0 -Zunstable-options  -Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--docck-python" "/usr/bin/python2.7" "--lldb-python" "/usr/bin/python2.7" "--gdb" "/usr/bin/gdb" "--quiet" "--llvm-version" "8.0.0" "--system-llvm" "--cc" "" "--cxx" "" "--cflags" "" "--llvm-components" "" "--adb-path" "adb" "--adb-test-dir" "/data/tmp/work" "--android-cross-path" "" "--color" "always"


failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test --exclude src/tools/tidy
Build completed unsuccessfully in 1:07:44
Build completed unsuccessfully in 1:07:44
== clock drift check ==
  local time: Sun May 10 08:10:42 UTC 2020
  network time: Sun, 10 May 2020 08:10:42 GMT
== end clock drift check ==

##[error]Bash exited with code '1'.
##[section]Finishing: Run build
##[section]Starting: Checkout rust-lang/rust@refs/pull/72071/merge to s
Task         : Get sources
Description  : Get sources from a repository. Supports Git, TfsVC, and SVN repositories.
Version      : 1.0.0
Author       : Microsoft
Author       : Microsoft
Help         : [More Information](https://go.microsoft.com/fwlink/?LinkId=798199)
==============================================================================
Cleaning any cached credential from repository: rust-lang/rust (GitHub)
##[section]Finishing: Checkout rust-lang/rust@refs/pull/72071/merge to s
Cleaning up task key
Start cleaning up orphan processes.
Terminate orphan process: pid (4337) (python)
##[section]Finishing: Finalize Job

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @rust-lang/infra. (Feature Requests)

Polkaverse · 2020-06-12T04:12:45Z

r? @davidtwco

src/librustc_error_codes/error_codes/E0687.md

davidtwco

LGTM, will let @GuillaumeGomez take a look though.

Polkaverse · 2020-07-01T10:35:34Z

r? @GuillaumeGomez

davidtwco · 2020-07-01T10:39:08Z

@bors r+

bors · 2020-07-01T10:39:09Z

📌 Commit 46bfc48 has been approved by davidtwco

davidtwco · 2020-07-01T10:39:29Z

Sorry for the delay here - will approve this now.

@GuillaumeGomez

…=davidtwco Added detailed error code explanation for issue E0687 in Rust compiler. Added proper error explanation for issue E0687 in the Rust compiler. Error Code E0687 Sub Part of Issue rust-lang#61137 r? @GuillaumeGomez

@ghost

…arth Rollup of 17 pull requests Successful merges: - rust-lang#72071 (Added detailed error code explanation for issue E0687 in Rust compiler.) - rust-lang#72369 (Bring net/parser.rs up to modern up to date with modern rust patterns) - rust-lang#72445 (Stabilize `#[track_caller]`.) - rust-lang#73466 (impl From<char> for String) - rust-lang#73548 (remove rustdoc warnings) - rust-lang#73649 (Fix sentence structure) - rust-lang#73678 (Update Box::from_raw example to generalize better) - rust-lang#73705 (stop taking references in Relate) - rust-lang#73716 (Document the static keyword) - rust-lang#73752 (Remap Windows ERROR_INVALID_PARAMETER to ErrorKind::InvalidInput from Other) - rust-lang#73776 (Move terminator to new module) - rust-lang#73778 (Make `likely` and `unlikely` const, gated by feature `const_unlikely`) - rust-lang#73805 (Document the type keyword) - rust-lang#73806 (Use an 'approximate' universal upper bound when reporting region errors) - rust-lang#73828 (Fix wording for anonymous parameter name help) - rust-lang#73846 (Fix comma in debug_assert! docs) - rust-lang#73847 (Edit cursor.prev() method docs in lexer) Failed merges: r? @ghost

rust-highfive assigned GuillaumeGomez May 10, 2020

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label May 10, 2020

joelpalmer added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels May 26, 2020

Elinvynia added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 3, 2020

rust-highfive assigned davidtwco and unassigned GuillaumeGomez Jun 12, 2020

GuillaumeGomez reviewed Jun 12, 2020

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Added proper explanation of ErrorCode-E0687

46bfc48

Polkaverse requested a review from GuillaumeGomez June 15, 2020 03:44

davidtwco approved these changes Jun 16, 2020

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rust-highfive assigned GuillaumeGomez and unassigned davidtwco Jul 1, 2020

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 1, 2020

Dylan-DPC-zz mentioned this pull request Jul 1, 2020

Rollup of 10 pull requests #73923

Closed

Manishearth mentioned this pull request Jul 1, 2020

Rollup of 17 pull requests #73924

Merged

bors merged commit 128fa2b into rust-lang:master Jul 1, 2020

Polkaverse deleted the ErrorCode-E0687 branch July 2, 2020 06:04

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Added detailed error code explanation for issue E0687 in Rust compiler.#72071