Auto merge of #154123 - Zalathar:rollup-MUEvgV7, r=Zalathar

Rollup of 15 pull requests

Successful merges:

 - rust-lang/rust#152909 (sess: `-Zbranch-protection` is a target modifier)
 - rust-lang/rust#153556 (`impl` restriction lowering)
 - rust-lang/rust#154048 (Don't emit rustdoc `missing_doc_code_examples` lint on impl items)
 - rust-lang/rust#150935 (Introduce #[diagnostic::on_move(message)])
 - rust-lang/rust#152973 (remove -Csoft-float)
 - rust-lang/rust#153862 (Rename `cycle_check` to `find_cycle`)
 - rust-lang/rust#153992 (bootstrap: Optionally print a backtrace if a command fails)
 - rust-lang/rust#154019 (two smaller feature cleanups)
 - rust-lang/rust#154059 (tests: Activate `must_not_suspend` test for `MutexGuard` dropped before `await`)
 - rust-lang/rust#154075 (Rewrite `query_ensure_result`.)
 - rust-lang/rust#154082 (Updates derive_where and removes workaround)
 - rust-lang/rust#154084 (Preserve braces around `self` in use tree pretty printing)
 - rust-lang/rust#154086 (Insert space after float literal ending with `.` in pretty printer)
 - rust-lang/rust#154087 (Fix whitespace after fragment specifiers in macro pretty printing)
 - rust-lang/rust#154109 (tests: Add regression test for async closures involving HRTBs)