Recent PRs break lots of nightly builds · Issue #88878 · rust-lang/rust (original) (raw)

I'm seeing most of the nightly project broken at the moment. It's either due to #88581 or due to this one:

| 22 | .intersperse(self.separate) | ^^^^^^^^^^^ multiple intersperse found | = note: candidate #1 is defined in an impl of the trait Iterator for the type std::iter::Map<I, F> = note: candidate #2 is defined in an impl of the trait Itertools for the type T help: disambiguate the associated function for candidate #1 | 19 ~ Iterator::intersperse(self.items 20 + .iter() 21 + .map(|c| c.min_width()), self.separate) | help: disambiguate the associated function for candidate #2 | 19 ~ Itertools::intersperse(self.items 20 + .iter() 21 + .map(|c| c.min_width()), self.separate) |

For example it breaks every branch of every git repo that uses:
prost-derive-0.7.0/
lalrpop-0.18.1
I suspect there's a few others, but prost is used in lots of places (as is bigint).

We need to somehow be kinder to the nightly ecosystem somehow with large scale backwardly incompatible breaking changes. Do we have an idea what percentage of projects still compile with latest nightly? I think it's a heavy dip at the moment.