rust: add `Debug` trait to a bunch of structs...
rust: add `Debug` trait to a bunch of structs
This is useful when... debugging. Right now the output is not in the most
readable state it could be, but this is very low effort and is good enough
for now. We may want to write a nicer custom debug formatter for some of those
structs in the future.
Differential Revision:
https://phab.mercurial-scm.org/D12523