The Minimal Complete and Verifiable Example for the Rust Issue #100125
Based on Cocoon project.
cargo install cargo-bisect-rustc./reproduce.shExplanation: if grep finds 80-90% in a coverage report (it looks for a 99% or say 84%, which is also good), so it's just looking for '>9' or '>8', then the script returns 0, else it returns error 1.
1 unit-test may fail, but it doesn't impact reproducibility, because it checks the code coverage.