[Pkg-rust-maintainers] Bug#1138881: librust-finl-unicode-dev fails to coinstall

[Peter Green]

> 
> The file /usr/share/cargo/registry/finl_unicode-1.4.0/generate-sources/t
> arget/.rustc_info.json is shared by librust-finl-unicode-dev version
> 1.4.0+dfsg-1 as present in unstable with varying content.

Thanks for the report, do you happen to have a tool that can provide
the full list of files with varying content so I can make sure to
fix this fully the first time?