Issues

• linking i686-uwp-windows-gnu target error without explicit message

  needs-triageO-uwp-windows-msvc
  rust-lang/rust#164426 · Filter by author Wyvern opened on Oct 16, 2026

• --keep-stage-std should build std if not present

  C-enhancementT-bootstrap
  rust-lang/rust#164423 · Filter by author ada4a opened on Oct 16, 2026

• Borrow held by an impl Trait value is lost when the value is passed through a closure (Polonius; the fn-pointer form also with NLL)

  A-borrow-checkerC-bugI-prioritizeI-unsoundregression-from-stable-to-stableT-types
  rust-lang/rust#164421 · Filter by author leeewee opened on Oct 16, 2026

• Polonius (old trait solver): fix for #160669 is skipped once the body contains a higher-ranked type

  A-borrow-checkerC-bugfixed-by-next-solverI-unsoundNLL-poloniusP-lowregression-from-stable-to-nightlyT-types
  rust-lang/rust#164420 · Filter by author leeewee opened on Oct 16, 2026
  4

• Implied bounds from a projection through a higher-ranked dyn bypass the fix for #98543

  A-associated-itemsA-dyn-traitA-higher-rankedA-implied-boundsC-bugI-prioritizeI-unsoundT-types
  rust-lang/rust#164416 · Filter by author leeewee opened on Oct 16, 2026
  1

• Should path separators participate in Path/PathBuf Hash impl?

  A-filesystemC-discussionT-libs
  rust-lang/rust#164415 · Filter by author jieyouxu opened on Oct 16, 2026
  2

• [ICE]: ` assertion left == right failed: Span must not be empty and have no suggestion in diagnostic.rs`

  C-bugI-ICEneeds-triagerequires-debug-assertionsT-compiler
  rust-lang/rust#164413 · Filter by author JamesDLance opened on Oct 16, 2026

• [ICE]: ` assertion left == right failed: suggestion must not have overlapping parts in diagnostic.rs`

  C-bugI-ICEneeds-triagerequires-debug-assertionsT-compiler
  rust-lang/rust#164412 · Filter by author JamesDLance opened on Oct 16, 2026

• [ICE]: Span must not be empty and have no suggestion in diagnostic.rs

  C-bugI-ICEneeds-triagerequires-debug-assertionsT-compiler
  rust-lang/rust#164411 · Filter by author JamesDLance opened on Oct 16, 2026

• [ICE]: ` assertion left == right failed: Span must not be empty and have no suggestion in diagnostic.rs`

  C-bugI-ICEneeds-triagerequires-debug-assertionsT-compiler
  rust-lang/rust#164410 · Filter by author JamesDLance opened on Oct 16, 2026

• [ICE]: Span must not be empty and have no suggestion in diagnostic.rs

  C-bugI-ICEneeds-triagerequires-debug-assertionsT-compiler
  rust-lang/rust#164409 · Filter by author JamesDLance opened on Oct 16, 2026

• [ICE]: ` assertion left == right failed: suggestion must not have overlapping parts in diagnostic.rs`

  C-bugI-ICEneeds-triagerequires-debug-assertionsT-compiler
  rust-lang/rust#164408 · Filter by author JamesDLance opened on Oct 16, 2026

• [ICE]: ` assertion left == right failed: suggestion must not have overlapping parts in diagnostic.rs`

  C-bugI-ICEneeds-triagerequires-debug-assertionsT-compiler
  rust-lang/rust#164407 · Filter by author JamesDLance opened on Oct 16, 2026
  1

• [ICE]: unsized type for size_of after unresolved name in where clause

  C-bugF-generic_const_exprsI-ICEneeds-triage
  rust-lang/rust#164400 · Filter by author leeewee opened on Oct 15, 2026

• Crate metadata and crate hash depend on the host CPU

  A-metadataA-reproducibilityC-bugI-prioritizeneeds-triageregression-from-stable-to-betaT-compiler
  rust-lang/rust#164379 · Filter by author tiny-ac opened on Oct 15, 2026
  1

• 1.100 beta regression: ICE with "has escaping bound vars, so it cannot be wrapped in a dummy binder"

  A-diagnosticsA-higher-rankedC-bugI-ICEI-prioritizeregression-from-stable-to-betaS-has-bisectionS-has-mcveT-compilerT-types
  rust-lang/rust#164376 · Filter by author theemathas opened on Oct 15, 2026
  1

• Tracking issue for release notes of #163224: [rustdoc] Add tabs to settings popover

  A-rustdoc-jsrelnotesrelnotes-needs-reviewrelnotes-tracking-issueT-rustdoc-frontend
  rust-lang/rust#164372 · Filter by author rustbot opened on Oct 15, 2026 · 1.101.0

• Tracking issue for MCP 1044: Move hir::Params from Body of functions to FnDecl.

  B-MCP-approvedC-tracking-issueS-tracking-unimplementedT-compiler
  rust-lang/rust#164357 · Filter by author rustbot opened on Oct 15, 2026
  1

  

• miscompilation via engineered StableSourceFileId hash collisions

  A-filesystemC-bugI-miscompileP-highregression-from-stable-to-stableT-compiler
  rust-lang/rust#164348 · Filter by author jsnell opened on Oct 15, 2026
  16

  

• [ICE]: E0425 (unresolved name) causes: "error: internal compiler error: encountered incremental compilation error with evaluate_obligation(438f71306b469e95-f644598fa3d5b9b0)"

  A-incr-compC-bugI-ICES-needs-reproT-compiler
  rust-lang/rust#164347 · Filter by author epilys opened on Oct 15, 2026

• Diverging block incorrectly inferred as () after never type fallback

  A-inferenceC-bugT-types
  rust-lang/rust#164343 · Filter by author llx07 opened on Oct 15, 2026
  1

• cargotest: xsv test fails to compile on riscv64 due to outdated libc

  C-bugO-riscv
  rust-lang/rust#164339 · Filter by author yuzibo opened on Oct 15, 2026
  3

• Reborrow unsoundness: calling through a closure allows two live exclusive reborrows

  A-borrow-checkerA-closuresC-bugF-reborrowI-unsoundT-types
  rust-lang/rust#164338 · Filter by author leeewee opened on Oct 15, 2026
  3

• Polonius (nightly default) loses the borrow captured by an impl Trait return value when the callee has a projection-typed parameter and is called through a closure

  A-associated-itemsA-borrow-checkerA-closuresA-impl-traitC-bugI-prioritizeI-unsoundNLL-poloniusregression-from-stable-to-nightlyT-types
  rust-lang/rust#164337 · Filter by author leeewee opened on Oct 15, 2026

• Miscompilation on i686 at -C opt-level=1 with debug assertions (SIGILL)

  A-LLVMC-bugE-needs-bisectionI-miscompileI-prioritizeO-x86_32T-compiler
  rust-lang/rust#164336 · Filter by author zxt5 opened on Oct 14, 2026