Auto merge of #116598 - matthiaskrgr:rollup-6xra4jx, r=matthiaskrgr

Rollup of 4 pull requests

Successful merges:

 - #116586 (use env variable to control thread ids in rustc_log)
 - #116589 (coverage: Unbox and simplify `bcb_filtered_successors`)
 - #116595 (-Zmir-enable-passes: document that this may enable unsound passes)
 - #116596 (reorder files in solve)

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

Author: bors