Stabilizing Iterator::intersperse breaks a large number of crates · Issue #88967 · rust-lang/rust (original) (raw)

The 1.56 crater run shows that there are at least 59 root crates (or repositories) broken by this change, and 260 crates.io crates along with 278 github repositories which depend on those.

See https://crater-reports.s3.amazonaws.com/beta-1.56-2/index.html > "regressed: root results" > E0034 for the root crates.

cc some threads with partial discussion:

• https://rust-lang.zulipchat.com/#narrow/stream/241545-t-release/topic/possible.20semi-breaking.20change.20in.20next.20release
• Recent PRs break lots of nightly builds #88878

Nominating for T-libs-api discussion as the FCP on #79524 seems to have been made without commentary about the expected level of breakage, so I suspect it was not discussed.