Rollup merge of #123189 - Kobzol:rustc-shim-log, r=onur-ozkan

Log BOLT args in bootstrap `rustc` shim

Before, the BOLT argument would not be logged, because it was only added after the logging has happened.

Found by `@RalfJung` [here](rust-lang/rust#116352 (comment)).

Author: matthiaskrgr