This increased the number of failing tests for some reason (more segfaults).
That said, I think it is correct.
Probably just exposing errors from elsewher that haven't been addressed (maybe causing a double free).
Error utils pulls in snafu which requires procedural macros.
This means it can't start compiling until syn and macro related crates are compiled.
This deals compiling all crates that depend on commands like running zig for the bitcode.
The split enables those crates to run sooner.
