Auto merge of #140043 - ChrisDenton:rollup-vwf0s9j, r=ChrisDenton

Rollup of 8 pull requests

Successful merges:

 - #138934 (support config extensions)
 - #139091 (Rewrite on_unimplemented format string parser.)
 - #139753 (Make `#[naked]` an unsafe attribute)
 - #139762 (Don't assemble non-env/bound candidates if projection is rigid)
 - #139834 (Don't canonicalize crate paths)
 - #139868 (Move `pal::env` to `std::sys::env_consts`)
 - #139978 (Add citool command for generating a test dashboard)
 - #139995 (Clean UI tests 4 of n)

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

Author: bors