Package: release.debian.org Severity: normal User: release.debian.org@packages.debian.org Usertags: binnmu nmu rust-xml-rs_0.8.0-1 . ANY . unstable . -m "Rebuild for updating Built-Using" nmu rust-rusty-tags_3.5.1-2 . ANY . unstable . -m "Rebuild for updating Built-Using" These were forcing to keep old rustc versions as Extra-Source-Only.