bump rustfmt 1.x rustc-ap* crates to v644 #4253
Merged
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Refs rust-lang/rust#73200, rustfmt 1.x pair to #4252.
There's one last parser bug which has been fixed in source, but that I want to also backport to rustfmt 1.x as part of thisfailure
toanyhow/thiserror
from Switch to std::error::Error for errors #3948 (in part becausefailure
is deprecated and because our subsequent err handling on master is based onanyhow
andthiserror
)