[Pkg-rust-maintainers] Bug#1064375: Raising severity of rust-gtk bugs

[Jeremy Bícha]

Control: severity -1 serious

at-spi2-core is part of the 64-bit time_t transition. The new version
of at-spi2-core is causing rust-atk-sys' autopkgtest to fail.
rust-atk-sys and the rest of the Rust GTK3 stack is no longer
maintained upstream. One way to handle this is to ignore failures of
the overly sensitive autopkgtest. But it also makes the GNOME 46 Rust
transition easier if we don't need to tweak or fix all the Rust GTK3
stuff ourselves.

Therefore, I am raising the severity of this bug and we will probably
ask the Debian Release Team to remove these packages from Testing even
faster than the automatic removal process.

Thank you,
Jeremy Bícha