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Use sort_unstable to sort primitive types

A-sliceArea: `[T]`Area: `[T]`

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

I-slowIssue: Problems and improvements with respect to performance of generated code.Issue: Problems and improvements with respect to performance of generated code.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#80483 In rust-lang/rust;

· ChrisJefferson opened on Dec 29, 2020

Unfreed (but still reachable) allocations in std::io::stdin are reported by Valgrind if non-default <code>--show-leak-kinds=all</code> option is specified

A-ioArea: `std::io`, `std::fs`, `std::net` and `std::path`Area: `std::io`, `std::fs`, `std::net` and `std::path`

C-bugCategory: This is a bug.Category: This is a bug.

E-hardCall for participation: Hard difficulty. Experience needed to fix: A lot.Call for participation: Hard difficulty. Experience needed to fix: A lot.

E-help-wantedCall for participation: Help is requested to fix this issue.Call for participation: Help is requested to fix this issue.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#80406 In rust-lang/rust;

· boydjohnson opened on Dec 27, 2020

Using ManuallyDrop causes allocas and memcpys that LLVM cannot remove

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

C-bugCategory: This is a bug.Category: This is a bug.

I-slowIssue: Problems and improvements with respect to performance of generated code.Issue: Problems and improvements with respect to performance of generated code.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#79914 In rust-lang/rust;

· scottmcm opened on Dec 10, 2020

Forbid <code>#[rustc_const_stable]</code> without <code>#[stable]</code>

A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)Area: Constant evaluation, covers all const contexts (static, const fn, ...)

A-stabilityArea: `#[stable]`, `#[unstable]` etc.Area: `#[stable]`, `#[unstable]` etc.

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#79551 In rust-lang/rust;

· CraftSpider opened on Nov 30, 2020

Instant accounts for system sleep on Windows but not on linux

A-timeArea: TimeArea: Time

C-bugCategory: This is a bug.Category: This is a bug.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#79462 In rust-lang/rust;

· mahkoh opened on Nov 27, 2020

fs::copy: Cannot copy special/device files (ex: /dev/null) into a file

A-ioArea: `std::io`, `std::fs`, `std::net` and `std::path`Area: `std::io`, `std::fs`, `std::net` and `std::path`

C-bugCategory: This is a bug.Category: This is a bug.

O-unixOperating system: Unix-likeOperating system: Unix-like

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#79390 In rust-lang/rust;

· sylvestre opened on Nov 24, 2020

HashMap reports zero capacity without freeing memory

A-collectionsArea: `std::collections`Area: `std::collections`

C-bugCategory: This is a bug.Category: This is a bug.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#79178 In rust-lang/rust;

· Diggsey opened on Nov 18, 2020

Transparently retrying <code>Interrupted</code> <code>waitpid</code> calls is not always appropriate

A-processArea: `std::process` and `std::env`Area: `std::process` and `std::env`

C-bugCategory: This is a bug.Category: This is a bug.

O-unixOperating system: Unix-likeOperating system: Unix-like

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#78949 In rust-lang/rust;

· nagisa opened on Nov 11, 2020

<code>std::thread::Builder::spawn()</code> panics

A-threadArea: `std::thread`Area: `std::thread`

C-bugCategory: This is a bug.Category: This is a bug.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#78497 In rust-lang/rust;

· BartMassey opened on Oct 28, 2020

Short backtrace sometimes includes unnecessary <code>core::ops::function::FnOnce::call_once</code> line

A-backtraceArea: BacktracesArea: Backtraces

A-runtimeArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflowsArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflows

C-bugCategory: This is a bug.Category: This is a bug.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#77715 In rust-lang/rust;

· solson opened on Oct 8, 2020

format_args! is slow

A-fmtArea: `core::fmt`Area: `core::fmt`

C-feature-requestCategory: A feature request, i.e: not implemented / a PR.Category: A feature request, i.e: not implemented / a PR.

I-slowIssue: Problems and improvements with respect to performance of generated code.Issue: Problems and improvements with respect to performance of generated code.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#76490 In rust-lang/rust;

· workingjubilee opened on Sep 8, 2020

Possible Vec::truncate improvement

A-collectionsArea: `std::collections`Area: `std::collections`

E-hardCall for participation: Hard difficulty. Experience needed to fix: A lot.Call for participation: Hard difficulty. Experience needed to fix: A lot.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#76089 In rust-lang/rust;

· leonardo-m opened on Aug 29, 2020