rust-lang/libs-team

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The home of the library team

Stars: 178
Forks: 28
Open beginner issues: 0
Indexed issues: 160
Avg merge: 15m
Merged PRs (30d): 1

Dominant language: Rust
License: Apache-2.0
Last GitHub push: Sep 13, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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160 open issues indexed

ACP: Referencing existing safety contracts in unsafe API documentation Open

api-change-proposal

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/libs-team#887 · Opened Sep 19, 2026
ACP: `File::preallocate` Open

api-change-proposal I-libs-nominated

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#886 · 10 comments · Opened Sep 19, 2026
ACP: `panic_abort!` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#885 · Opened Sep 18, 2026
ACP: Add `bytes` to the standard library Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/libs-team#883 · 11 comments · 3 reactions · Opened Sep 18, 2026
Add an equivalent `DirBuilderExt` trait on Windows + introducing creating subdirectories from `Dir` with certain permissions upfront Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#882 · 5 comments · Opened Sep 18, 2026
ACP: Add `BufReader::chars() -> Chars` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 45/100

rust-lang/libs-team#881 · 3 comments · Opened Sep 17, 2026
add `Vec::try_from_fn` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#880 · Opened Sep 15, 2026
ACP: `Iterator::collect_into_owned()` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#879 · 1 reaction · Opened Sep 14, 2026
ACP: Path forward to implementing atomic functionality in terms of Atomic<T> Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#878 · Opened Sep 4, 2026
ACP: Add `flush_to_zero` methods on floats Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#877 · 4 comments · Opened Sep 4, 2026
ACP: add `scalbn` and `ilogb` float methods Open

api-change-proposal I-libs-nominated

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#876 · 10 comments · Opened Sep 3, 2026
ACP: Add token-enabled allocator interface support for LLVM AllocToken and heap partitioning Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#875 · 10 comments · Opened Sep 3, 2026
Simpler and ergonomic propagation of poisoned Mutex and RwLock errors Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#874 · 1 reaction · Opened Sep 2, 2026
`type range::RangeOfBounds<T> = (Bound<T>, Bound<T>)` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#873 · 8 comments · Opened Sep 1, 2026
Option<NonNull<T>>::as_ptr Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#872 · 7 comments · 5 reactions · Opened Aug 30, 2026
ACP: Add `Duration::{WEEK, DAY, HOUR, MINUTE}` associated constants Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#869 · 5 comments · 2 reactions · Opened Aug 28, 2026
Add API to call `codeview_annotation` intrinsic Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#868 · 6 comments · 1 reaction · Opened Aug 28, 2026
`Stdio::none()` for Windows Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#867 · 17 comments · 1 reaction · Opened Aug 28, 2026
Add generic `downcast` functions to combat combinatoric explosion Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#866 · 7 comments · Opened Aug 27, 2026
Extra tracking labels for libs team Open

I-libs-nominated

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/libs-team#864 · 3 comments · Opened Aug 25, 2026
ACP: Add a downcasting method for `Arc<dyn Any>` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#862 · Opened Aug 23, 2026
ACP: `impl From<usize> for u{64, 128}` Open

api-change-proposal needs-fcp

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#860 · 11 comments · Opened Aug 21, 2026
ACP: Remove `T: Send + Sync` bound from `Arc::<dyn Any + Send + Sync>::downcast<T> where T: Any + Send + Sync` Open

api-change-proposal needs-fcp

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rust-lang/libs-team#859 · 10 comments · Opened Aug 20, 2026
add a way to reuse a `Box` allocation Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 45/100

rust-lang/libs-team#857 · 14 comments · Opened Aug 17, 2026
ACP: O_DIRECTORY open flag on OpenOptionsExt Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#856 · 2 comments · Opened Aug 16, 2026
Implement `Write for Cursor<W> where W: AsMut<[u8]>` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#853 · 6 comments · 3 reactions · Opened Aug 12, 2026
Short Duration constants Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#851 · 26 comments · 2 reactions · Opened Aug 11, 2026
ACP: Add Instant::epoch() Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#850 · 11 comments · 1 reaction · Opened Aug 11, 2026
Tuple <-> Array conversion helpers Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#849 · 2 comments · 2 reactions · Opened Aug 10, 2026
map on homogenous tuples Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#847 · 11 comments · 1 reaction · Opened Aug 6, 2026
ACP: Add BTF relocation macros to core Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#846 · 2 comments · Opened Aug 6, 2026
Add methods for bounds-checked raw slice pointer indexing to `SliceIndex` and slice-like types. Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 45/100

rust-lang/libs-team#844 · 2 reactions · Opened Aug 5, 2026
Setting a `File` non-blocking Open

ACP-accepted api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#842 · 10 comments · Opened Jul 31, 2026
Per-thread panic hooks Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#841 · 19 comments · 2 reactions · Opened Jul 30, 2026
Trait for safe all-zero byte initialization (v2) Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#840 · 5 comments · 1 reaction · Opened Jul 26, 2026
meta: Running cargo-semver-checks in reverse on std stabilisations Open

meta

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#839 · 11 comments · 4 reactions · Opened Jul 26, 2026
Add `rem_euclid_unsigned()` for signed integer types Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#838 · 2 comments · 1 reaction · Opened Jul 22, 2026
Split out common behavior of `FnStatic` and `FnPtr` into a new trait: `FnAddr` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#837 · 10 comments · Opened Jul 22, 2026
Rename `VecDeque::truncate` to greatly reduce ambiguity Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#835 · 3 comments · 1 reaction · Opened Jul 16, 2026
Meta-ACP: Integer cast methods Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#833 · 28 comments · 3 reactions · Opened Jul 15, 2026
Type-smart `intersect` on ranges -- v2 Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#832 · 1 comment · 3 reactions · Opened Jul 14, 2026
Separate `Components` iterator implementation into non-prefixed & prefixed versions Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#828 · 1 comment · Opened Jul 14, 2026
ACP: add `unsafe trait PureRef<U>` to guarantee purity of the AsRef/Deref/Borrow traits Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/libs-team#827 · 18 comments · 1 reaction · Opened Jul 11, 2026
Add `core::mem::size_of_field!` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 38/100

rust-lang/libs-team#826 · 2 comments · 1 reaction · Opened Jul 8, 2026
ACP: `impl From<&Rc<T>> for Rc<T>` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#821 · 6 comments · 1 reaction · Opened Jun 24, 2026
ACP: Remove 'static from Any itself, moving the bound to the operations themselves Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 28/100

rust-lang/libs-team#819 · 4 comments · 4 reactions · Opened Jun 19, 2026
ACP: Add `fN::ordinal` Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#816 · 9 comments · 4 reactions · Opened Jun 17, 2026
`OnlyNegative` and `NonNegative` to compliment `NonZero` for signed integers Open

api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#814 · 4 comments · 3 reactions · Opened Jun 15, 2026
ACP: convenient numeric conversions dependent on overflow-checks Open

ACP-accepted api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#811 · 9 comments · Opened Jun 8, 2026
ACP: Missing floating point conversions Open

ACP-accepted api-change-proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/libs-team#810 · 24 comments · Opened Jun 8, 2026

rust-lang/libs-team

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