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                                            Rust timing bot

Fix inconsistent rounding of 0.5 when formatted to 0 decimal places

Finished benchmarking commit (e702534763599db252f2ca308739ec340d0933de): [comparison URL](https://perf.rust-lang.org/compare.html?start=3b91b1a37bbb607348b8713d2e8f1051bf414048&end=e702534763599db252f2ca308739ec340d0933de&stat=instructions:u). ### Overall result: ❌ regressions - no action needed @rustbot label: -perf-regression ### [Instruction count](https://perf.rust-lang.org/compare.html?start=3b91b1a37bbb607348b8713d2e8f1051bf414048&end=e702534763599db252f2ca308739ec340d0933de&stat=instructions:u) This is a highly reliable metric that was used...

Constify remaining `Layout` methods

Awaiting bors try build completion. @rustbot label: +S-waiting-on-perf

Constify remaining `Layout` methods

Queued e450b43a99ba5ada3fbe7cd8eeae5dce9ffffff1 with parent e4d6307c633c954971f3ca7876d4f29f3fe83614, future [comparison URL](https://perf.rust-lang.org/compare.html?start=e4d6307c633c954971f3ca7876d4f29f3fe83614&end=e450b43a99ba5ada3fbe7cd8eeae5dce9ffffff1).

Constify remaining `Layout` methods

Finished benchmarking commit (e450b43a99ba5ada3fbe7cd8eeae5dce9ffffff1): [comparison URL](https://perf.rust-lang.org/compare.html?start=e4d6307c633c954971f3ca7876d4f29f3fe83614&end=e450b43a99ba5ada3fbe7cd8eeae5dce9ffffff1&stat=instructions:u). ### Overall result: no relevant changes - no action needed Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking...

Remove lock wrappers in `sys_common`

Finished benchmarking commit (b0c6527912cee113b29a33d7db0e801a58a94de5): [comparison URL](https://perf.rust-lang.org/compare.html?start=42325c525b9d3885847a3f803abe53c562d289da&end=b0c6527912cee113b29a33d7db0e801a58a94de5&stat=instructions:u). ### Overall result: no relevant changes - no action needed @rustbot label: -perf-regression ### [Instruction count](https://perf.rust-lang.org/compare.html?start=42325c525b9d3885847a3f803abe53c562d289da&end=b0c6527912cee113b29a33d7db0e801a58a94de5&stat=instructions:u) This benchmark run did not return any relevant...

Support ?Trait bounds in supertraits and dyn Trait under a feature gate

Finished benchmarking commit (7c2012d0ec3aae89fefc40e5d6b317a0949cda36): [comparison URL](https://perf.rust-lang.org/compare.html?start=47243b335e02c341528dd3beb77fa0e030d7ccda&end=7c2012d0ec3aae89fefc40e5d6b317a0949cda36&stat=instructions:u). ### Overall result: no relevant changes - no action needed @rustbot label: -perf-regression ### [Instruction count](https://perf.rust-lang.org/compare.html?start=47243b335e02c341528dd3beb77fa0e030d7ccda&end=7c2012d0ec3aae89fefc40e5d6b317a0949cda36&stat=instructions:u) This benchmark run did not return any relevant...

Less syscalls for the `copy_file_range` probe

Finished benchmarking commit (b0925697fdaec1bcddec2732bb3cf7f918b18745): [comparison URL](https://perf.rust-lang.org/compare.html?start=785eb65377e5d7f8d8e8b82ede044212bbd2d76e&end=b0925697fdaec1bcddec2732bb3cf7f918b18745&stat=instructions:u). ### Overall result: ❌ regressions - no action needed @rustbot label: -perf-regression ### [Instruction count](https://perf.rust-lang.org/compare.html?start=785eb65377e5d7f8d8e8b82ede044212bbd2d76e&end=b0925697fdaec1bcddec2732bb3cf7f918b18745&stat=instructions:u) This is a highly reliable metric that was used...

Panic if `PathBuf::set_extension` would add a path separator

Finished benchmarking commit (bd184cc3e1ee16c1d74444fa246dcfbade9a31d5): [comparison URL](https://perf.rust-lang.org/compare.html?start=75e2c5dcd0ddce0fe0eb3d4a2195cd51073c729b&end=bd184cc3e1ee16c1d74444fa246dcfbade9a31d5&stat=instructions:u). ### Overall result: no relevant changes - no action needed @rustbot label: -perf-regression ### [Instruction count](https://perf.rust-lang.org/compare.html?start=75e2c5dcd0ddce0fe0eb3d4a2195cd51073c729b&end=bd184cc3e1ee16c1d74444fa246dcfbade9a31d5&stat=instructions:u) This benchmark run did not return any relevant...

Stabilize `custom_code_classes_in_docs` feature

Finished benchmarking commit (05965ae238403d8c141170b411245a62aa046240): [comparison URL](https://perf.rust-lang.org/compare.html?start=466be510af95d377a4e9997a6ab7c4db5f91e9ec&end=05965ae238403d8c141170b411245a62aa046240&stat=instructions:u). ### Overall result: ✅ improvements - no action needed @rustbot label: -perf-regression ### [Instruction count](https://perf.rust-lang.org/compare.html?start=466be510af95d377a4e9997a6ab7c4db5f91e9ec&end=05965ae238403d8c141170b411245a62aa046240&stat=instructions:u) This is a highly reliable metric that was used...

speed up `String::push` and `String::insert`

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