db4b4d3bec
Rollup of 7 pull requests Successful merges: - #89891 (`alloc`: add unstable cfg features `no_rc` and `no_sync`) - #101995 (Add another example for `uN::carrying_mul`) - #102031 (Adding ignore fuchsia tests for Backtrace, ErrorKind cases) - #102041 (Improve `-Zmeta-stats` some more) - #102045 (fix ConstProp handling of written_only_inside_own_block_locals) - #102058 (Clarify Path::extension() semantics in docs abstract) - #102059 (Use rebind instead of dummy binder in `SameTypeModuloInfer` relation) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup