[experiment] slice::IterRaw

[WaffleLapkin]

No description provided.

[WaffleLapkin]

@bors try @rust-timer queue

[rust-bors]

💔 Test for 4213105 failed: CI. Failed job:

• try - dist-x86_64-linux-quick (web logs, enhanced plaintext logs)

[WaffleLapkin]

@bors try @rust-timer queue

[rust-bors]

☀️ Try build successful (CI)
Build commit: f65824f (f65824f8656c686e990d598cd4947ac0ec7e12b9)
Base parent: f10db29 (f10db292a3733b5c67c8da8c7661195ff4b05774)

[rust-timer]

Finished benchmarking commit (f65824f): comparison URL.

Overall result: ❌✅ regressions and improvements - please read:

Benchmarking means the PR may be perf-sensitive. It's automatically marked not fit for rolling up. Overriding is possible but disadvised: it risks changing compiler perf.

Next, please: If you can, justify the regressions found in this try perf run in writing along with @rustbot label: +perf-regression-triaged. If not, fix the regressions and do another perf run. Neutral or positive results will clear the label automatically.

@bors rollup=never
@rustbot label: -S-waiting-on-perf +perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	0.8%	[0.2%, 4.4%]	27
Regressions ❌ (secondary)	0.6%	[0.0%, 4.1%]	21
Improvements ✅ (primary)	-0.6%	[-1.3%, -0.2%]	19
Improvements ✅ (secondary)	-0.4%	[-0.5%, -0.3%]	2
All ❌✅ (primary)	0.2%	[-1.3%, 4.4%]	46

Max RSS (memory usage)

Results (primary 2.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	3.0%	[0.5%, 4.9%]	4
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-1.2%	[-1.2%, -1.2%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	2.1%	[-1.2%, 4.9%]	5

Cycles

Results (primary 1.3%, secondary 3.6%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	3.2%	[1.5%, 4.9%]	2
Regressions ❌ (secondary)	3.6%	[3.6%, 3.6%]	1
Improvements ✅ (primary)	-2.7%	[-2.7%, -2.7%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	1.3%	[-2.7%, 4.9%]	3

Binary size

Results (primary 0.8%, secondary 0.9%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	1.0%	[0.0%, 2.6%]	77
Regressions ❌ (secondary)	0.9%	[0.1%, 2.6%]	68
Improvements ✅ (primary)	-0.5%	[-1.2%, -0.0%]	11
Improvements ✅ (secondary)	-0.2%	[-0.5%, -0.0%]	3
All ❌✅ (primary)	0.8%	[-1.2%, 2.6%]	88

Bootstrap: 487.206s -> 489.175s (0.40%)
Artifact size: 388.97 MiB -> 389.01 MiB (0.01%)

[rust-log-analyzer]

The job test-x86_64-gnu-gcc-core-tests failed! Check out the build log: (web) (plain enhanced) (plain)

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

48 |     #[inline(always)]
   |     ----------------- the inline attribute is specified here

[RUSTC-TIMING] core test:false 14.837
rustc exited with signal: 6 (SIGABRT) (core dumped)
error: could not compile `core` (lib) due to 3 previous errors

Caused by:
  process didn't exit successfully: `/checkout/obj/build/bootstrap/debug/rustc /checkout/obj/build/bootstrap/debug/rustc --crate-name core --edition=2024 library/core/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -Z embed-metadata=no -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 --warn=unexpected_cfgs --check-cfg 'cfg(no_fp_fmt_parse)' --check-cfg 'cfg(feature, values(any()))' --check-cfg 'cfg(target_has_reliable_f16)' --check-cfg 'cfg(target_has_reliable_f16_math)' --check-cfg 'cfg(target_has_reliable_f16b)' --check-cfg 'cfg(target_has_reliable_f128)' --check-cfg 'cfg(target_has_reliable_f128_math)' --check-cfg 'cfg(no_io_statics)' -Cembed-bitcode=yes -Zunstable-options -Cforce-frame-pointers=non-leaf -C overflow-checks=on --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("debug_refcell", "optimize_for_size", "panic_immediate_abort"))' -C metadata=a15481c06a659bc2 -C extra-filename=-a0620df8c5d70b2d --out-dir /checkout/obj/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/dist/build/core/a0620df8c5d70b2d/out --target x86_64-unknown-linux-gnu -L dependency=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-std/dist/build/core/a0620df8c5d70b2d/out -Zannotate-moves '--check-cfg=cfg(feature,values(any()))' -Zunstable-options -Zmacro-backtrace -Csplit-debuginfo=off -Cprefer-dynamic -Zinline-mir -Zinline-mir-preserve-debug -Zmir_strip_debuginfo=locals-in-tiny-functions -Clink-args=-Wl,-z,origin '-Clink-args=-Wl,-rpath,$ORIGIN/../lib' -Alinker-messages '-Zcrate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/")' -Cpanic=abort -Zpanic-abort-tests -Z binary-dep-depinfo` (exit status: 254)
Bootstrap failed while executing `--stage 1 test library/coretests`
Currently active steps:
test::Crate { build_compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu, forced_compiler: false }, target: x86_64-unknown-linux-gnu, mode: Std, crates: ["coretests"] } at src/bootstrap/src/core/build_steps/test.rs:3528
compile::Std { target: x86_64-unknown-linux-gnu, build_compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu, forced_compiler: false }, crates: [], force_recompile: true, extra_rust_args: [], is_for_mir_opt_tests: false } at src/bootstrap/src/core/build_steps/test.rs:3546
Build completed unsuccessfully in 0:02:00

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