Auto merge of #149276 - matthiaskrgr:rollup-wlrpdrr, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - rust-lang/rust#148234 (rustdoc: make mergeable crate info more usable)
 - rust-lang/rust#149201 (Add suggest alternatives for Out-of-range \x escapes)
 - rust-lang/rust#149208 ([rustdoc] Make more functions return `fmt::Result` and reduce number of `.unwrap()` calls)
 - rust-lang/rust#149252 (miri: use `tikv-jemalloc-sys` from sysroot)
 - rust-lang/rust#149255 (Use `let...else` consistently in user-facing diagnostics)
 - rust-lang/rust#149275 (Fix missing double-quote in `std::env::consts::OS` values)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors