Panic at 'index out of bounds: the len is 2 but the index is 2'

[WaffleLapkin]

When editing a pacticular project I keep getting this panic message from RA (b73b321 2021-09-06 stable, VS Code, Arch Linux). Here is the error output in VS code: <gist>.

Repro:

; git clone https://github.com/WaffleLapkin/sudoku-solve.git && cd sudoku-solve && git switch --detach d57e314f70b55040698ffb60ed84e47d071c7650
; rust-analyzer --version
rust-analyzer b73b32147 2021-09-06 dev
; rust-analyzer analysis-stats .
Database loaded:     965.22ms, 68minstr (metadata 640.72ms, 1141kinstr; build 280.63ms, 633kinstr)
  crates: 1, mods: 1, decls: 17, fns: 8
Item Collection:     3.20s, 21ginstr
4/8 50% processing: newthread 'main' panicked at 'index out of bounds: the len is 2 but the index is 2', /build/.cargo/registry/src/github.com-1ecc6299db9ec823/chalk-ir-0.70.0/src/lib.rs:2752:10
stack backtrace:
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

[maoe]

I saw a similar issue with our in-house codebase. The error message looked identical apart from the len/index values (1/1 for me). FWIW I was able to work around the issue by downgrading the rust-analyzer vscode extension to v0.2.710. All newer versions seem to suffer from this issue.

[flodiebold]

Likely a duplicate of #10046

[lnicola]

Lazy minimization:

use bitvec::array::BitArray;

fn main() {
    let mut holes = BitArray::default();
    holes.set(0, true);
}

[flodiebold]

Seems like the same case as mine then.

[flodiebold]

Should be fixed with the next release.

[WaffleLapkin]

Thanks!