ICE: `unexpected type encountered in variance inference` in `rustc_hir_analysis/src/variance/constraints.rs` about rust HOT 3 OPEN

searched toolchains nightly-2022-01-01 through nightly-2024-05-30


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Regression in nightly-2022-02-03
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fetching https://static.rust-lang.org/dist/2022-02-02/channel-rust-nightly-git-commit-hash.txt
nightly manifest 2022-02-02: 40 B / 40 B [===================================================] 100.00 % 717.65 KB/s converted 2022-02-02 to 2681f253bcdb31a274411d2be456e7c6a1c67d62
fetching https://static.rust-lang.org/dist/2022-02-03/channel-rust-nightly-git-commit-hash.txt
nightly manifest 2022-02-03: 40 B / 40 B [===================================================] 100.00 % 610.55 KB/s converted 2022-02-03 to 27f5d830eb11cd7bdc834d6f0d78120976f75443
looking for regression commit between 2022-02-02 and 2022-02-03
fetching (via remote github) commits from max(2681f253bcdb31a274411d2be456e7c6a1c67d62, 2022-01-31) to 27f5d830eb11cd7bdc834d6f0d78120976f75443
ending github query because we found starting sha: 2681f253bcdb31a274411d2be456e7c6a1c67d62
get_commits_between returning commits, len: 7
  commit[0] 2022-02-01: Auto merge of #93442 - yaahc:Termination-abstraction, r=Mark-Simulacrum
  commit[1] 2022-02-01: Auto merge of #93285 - JulianKnodt:const_eq_2, r=oli-obk
  commit[2] 2022-02-02: Auto merge of #93466 - cjgillot:query-dead, r=nagisa
  commit[3] 2022-02-02: Auto merge of #93573 - matthiaskrgr:rollup-nrjmygz, r=matthiaskrgr
  commit[4] 2022-02-02: Auto merge of #93154 - michaelwoerister:fix-generic-closure-and-generator-debuginfo, r=wesleywiser
  commit[5] 2022-02-02: Auto merge of #93312 - pierwill:map-all-local-trait-impls, r=cjgillot
  commit[6] 2022-02-02: Auto merge of #93594 - matthiaskrgr:rollup-lcvhpdv, r=matthiaskrgr
ERROR: no CI builds available between 2681f253bcdb31a274411d2be456e7c6a1c67d62 and 27f5d830eb11cd7bdc834d6f0d78120976f75443 within last 167 days

cargo-bisect-rustc-bisect-rustc 0.6.8
cargo bisect-rustc --start=2022-01-01 --end=2024-05-30 --regress=ice --script=rustc --preserve -- 125957.rs