Rustc 1.45.0 hangs when compiling criterion in release mode

When compiling the criterion crate, starting with commit 1154c045655bdf6a750d0c3a21b42824e6e996e5 rustc 1.45.0 hangs (> 12 hours). This happens on NixOS with AMD or Intel compiler. The distribution is NixOS with Rust from the master branch of nixpkgs.

git clone https://github.com/bheisler/criterion.rs.git
cd criterion.rs
cargo build --release

Here is a flamegraph (made with HotSpot) of the running rustc process of 12 minutes of running after running for 12 hours.

I'm wondering if anyone else has experienced this issue.

3 Likes

Please open an issue: https://github.com/rust-lang/rust/issues/

1 Like

Worked for me. This is Fedora 32 and the criterion commit is 89593658643f9a12949f99f35a6bf906cb4e43c0

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