Rollup of 8 pull requests
Successful merges:
- #123254 (Do not allocate for ZST ThinBox (attempt 2 using const_allocate))
- #123626 (Add MC/DC support to coverage test tools)
- #123638 (rustdoc: synthetic auto: filter out clauses from the implementor's ParamEnv)
- #123653 (Split `non_local_definitions` lint tests in separate test files)
- #123658 (Stop making any assumption about the projections applied to the upvars in the `ByMoveBody` pass)
- #123662 (Don't rely on upvars being assigned just because coroutine-closure kind is assigned)
- #123665 (Fix typo in `Future::poll()` docs)
- #123672 (compiletest: unset `RUSTC_LOG_COLOR`)
r? `@ghost`
`@rustbot` modify labels: rollup
ff24ef91fc