This is a reproduction for rust-lang/cargo#15744 (originally nextest-rs/nextest#2463). To execute, run cargo run.
A bisect shows this is okay on nightly-2025-04-28, and repros on nightly-2025-04-29.
% cargo +nightly-2025-04-28 -V
cargo 1.88.0-nightly (d811228b1 2025-04-15)
% cargo +nightly-2025-04-29 -V
cargo 1.88.0-nightly (7918c7eb5 2025-04-27)
The range of Cargo commits is here.