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The <code>thread::sleep_until</code> test frequently fails under Windows 7

A-docsArea: Documentation for any part of the project, including the compiler, standard library, and toolsArea: Documentation for any part of the project, including the compiler, standard library, and tools

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

A-timeArea: TimeArea: Time

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

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

F-sleep_until`#![feature(sleep_until)]``#![feature(sleep_until)]`

I-flaky-testIssue: A test is flaky/unreliable/spuriously failsIssue: A test is flaky/unreliable/spuriously fails

O-windows-7OS: Windows 7 or Windows Server 2008 R2 or etc.OS: Windows 7 or Windows Server 2008 R2 or etc.

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.

#149935 In rust-lang/rust;

· PaulDance opened on Dec 13, 2025

Loss of precision in <code>Duration::mul_f32</code> (and <code>mul_f64</code>)

A-floating-pointArea: Floating point numbers and arithmeticArea: Floating point numbers and arithmetic

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.

#149794 In rust-lang/rust;

· quaternic opened on Dec 8, 2025

Error in obtaining time on ‘arm-unknown-linux-musleabihf’ platform

A-timeArea: TimeArea: Time

C-gubCategory: the reverse of a compiler bug is generally UBCategory: the reverse of a compiler bug is generally UB

O-AArch64Armv8-A or later processors in AArch64 modeArmv8-A or later processors in AArch64 mode

O-ArmTarget: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 stateTarget: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state

O-muslTarget: The musl libcTarget: The musl libc

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.

#115921 In rust-lang/rust;

· vnt-dev opened on Sep 18, 2023

Panic in <code>SystemTime::now()</code> when <code>clock_gettime()</code> fails

A-timeArea: TimeArea: Time

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

E-needs-designThis issue needs exploration and design to see how and if we can fix/implement itThis issue needs exploration and design to see how and if we can fix/implement it

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

Status: Open.

#115482 In rust-lang/rust;

· pitdicker opened on Sep 2, 2023

<code>Duration</code> <code>Debug</code> for 2.5s rounds inconsistently for <code>duration</code> and <code>duration.as_secs_f64()</code>

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.

#103747 In rust-lang/rust;

· tczajka opened on Oct 30, 2022

Subtracting Duration from Instant on Mac is panic-prone

A-timeArea: TimeArea: Time

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

O-appleOperating system: Apple (macOS, iOS, tvOS, visionOS, watchOS)Operating system: Apple (macOS, iOS, tvOS, visionOS, watchOS)

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.

#100141 In rust-lang/rust;

· matklad opened on Aug 4, 2022

<code>Instant::duration_since</code> returns a shortened duration if a suspend occurred

A-timeArea: TimeArea: Time

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

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.

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

Status: Open.

#87906 In rust-lang/rust;

· maurer opened on Aug 10, 2021

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

Android: Instant not advancing while the screen is off

A-timeArea: TimeArea: Time

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

O-androidOperating system: AndroidOperating system: Android

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.

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

Status: Open.

#71860 In rust-lang/rust;

· Hocuri opened on May 3, 2020

Feature Request: saturating_add(Duration) for SystemTime / Instant

A-timeArea: TimeArea: Time

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

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

Status: Open.

#71224 In rust-lang/rust;

· woody77 opened on Apr 16, 2020

Assertion fails in doc example for std::thread::sleep() in 1.32.0 stable

A-timeArea: TimeArea: Time

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

O-windowsOperating system: WindowsOperating system: Windows

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

Status: Open.

#57772 In rust-lang/rust;

· TheRealOrangus opened on Jan 20, 2019

Tracking issue for duration_constants

A-timeArea: TimeArea: Time

B-unstableBlocker: Implemented in the nightly compiler and unstable.Blocker: Implemented in the nightly compiler and unstable.

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

Libs-TrackedLibs issues that are tracked on the team's project board.Libs issues that are tracked on the team's project board.

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

Status: Open.

#57391 In rust-lang/rust;

· frewsxcv opened on Jan 6, 2019