regression: failed to normalize alias(opaque ...)

[Mark-Simulacrum]

[INFO] [stdout] error: internal compiler error: compiler/rustc_middle/src/ty/normalize_erasing_regions.rs:187:90: Failed to normalize Alias(Opaque, AliasTy { args: [], def_id: DefId(0:10611 ~ skynet[2ead]::web::create_task::{opaque#0}::{opaque#0}) }), maybe try to call `try_normalize_erasing_regions` instead

• https://crater-reports.s3.amazonaws.com/beta-1.78-3/beta-2024-03-30/gh/Menestis.Skynet/log.txt

[apiraino]

Trying to bisect. Not so easy because cargo-bisect runs on nightlies and on nightly this crate does not compile.

WG-prioritization assigning priority (Zulip discussion).

@rustbot label -I-prioritize +P-medium

[kadiwa4]

Using a patched version of ahash 0.7.8 that doesn't activate feature(stdsimd):

searched nightlies: from nightly-2024-02-01 to nightly-2024-03-17
regressed nightly: nightly-2024-02-09
searched commit range: 8ace7ea...98aa362
regressed commit: af88f7d (#120550 @oli-obk)

bisected with cargo-bisect-rustc v0.6.8

Host triple: aarch64-apple-darwin
Reproduce with:

cargo bisect-rustc --regress=ice --start=2024-02-01 --end=2024-03-17 

@rustbot label: -E-needs-bisection

[oli-obk]

Yea, this crate already errors with

error: couldn't read src/web/../../docs/web/index.html: No such file or directory (os error 2)
[INFO] [stdout]    --> src/web/mod.rs:114:20
[INFO] [stdout]     |
[INFO] [stdout] 114 |     Ok(reply::html(include_str!("../../docs/web/index.html")))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)

before it ICEs, so while this is an ICE to be fixed, it's not beta critical