Rollup of 10 pull requests
Successful merges:
- #135773 (Clarify WindowsMut (Lending)Iterator)
- #135807 (Implement phantom variance markers)
- #135876 (fix doc for std::sync::mpmc)
- #135988 (Add a workaround for parallel rustc crashing when there are delayed bugs)
- #136037 (Mark all NuttX targets as tier 3 target and support the standard library)
- #136064 (Add a suggestion to cast target_feature fn items to fn pointers.)
- #136082 (Incorporate `iter_nodes` into `graph::DirectedGraph`)
- #136112 (Clean up all dead files inside `tests/ui/`)
- #136114 (Use identifiers more in diagnostics code)
- #136118 (Change `collect_and_partition_mono_items` tuple return type to a struct)
r? `@ghost`
`@rustbot` modify labels: rollup
ebcf860e73