[Pkg-rust-maintainers] Bug#1103599: rust-cargo-test-support: BD-Uninstallable on all archs

[Chris Hofstaedtler]

Source: rust-cargo-test-support
Version: 0.3.0-1
Severity: serious
Tags: ftbfs

rust-cargo-test-support's build-depends are unavailable on all archs:

rust-cargo-test-support build-depends on missing:
- librust-git2-0.19+default-dev:amd64


rust-cargo-test-support build-depends on missing:
- librust-git2-0.19+default-dev:arm64

...

rust-cargo-test-support build-depends on missing:
- librust-git2-0.19+default-dev:s390x