Top rust issues

Port `compiler-rt` intrinsics to Rust

T-libs

MUSL target doesn't link on nightly

E-help-wanted regression-from-stable-to-nightly

Installing Rust on Windows via the installer may lead to linking failures/conflicts

O-windows

[MIR] Stage1 `libcore` crashes with SIGILL on ARM

A-LLVM A-codegen I-crash O-ARM P-high T-compiler regression-from-stable-to-stable

Please impl Index<usize> for str and String

The "unstable" documentation attribute on intrinsics should mention the specific stabilized interface for each individual intrinsic

A-intrinsics C-feature-request E-mentor T-doc T-libs

Rust book documentation does not mention "crate documentation"

E-easy E-help-wanted E-mentor

Add link to XID_start and XID_continue definitions in language reference

E-easy E-help-wanted E-mentor P-medium T-doc

Match expressions use O(n) stack space with n branches

A-LLVM A-codegen A-mir-opt A-patterns C-enhancement I-heavy T-compiler

Misleading error message on typo "Type ascription"

A-diagnostics C-enhancement D-confusing D-verbose P-low T-compiler