I tried this code: cargo doc && RUSTDOCFLAGS='-Z unstable-options '--show-coverage cargo doc

I expected to see this happen: There is documentation in target/doc/crate_name

Instead, this happened: The docs get deleted.

Meta

searched nightlies: from nightly-2021-04-28 to nightly-2021-04-29
regressed nightly: nightly-2021-04-29
searched commits: from 727d101 to ca075d2
regressed commit: 27bd3f5

cargo bisect-rustc --script ./docs-exist.sh --preserve --start 2021-04-28 --end 2021-04-29