Use of uninitialized value in concatenation (.) or string at /usr/share/perl5/Devscripts/Uscan/WatchLine.pm line 868.
uscan warn: In debian/watch no matching hrefs for version 20210825 in watch line
https://github.com/brettwooldridge/SparseBitSet/tags .*/(?:.*?)([\d\.]+)\.tar\.gz
Looking for upstream 20210825 in upstream branch <RemoteGitBranch('https://github.com/brettwooldridge/SparseBitSet.git/', 'master')>.
No upstream upstream-revision format specified, trying tag:20210825
No upstream upstream-revision format specified, trying tag:sparsebitset-20210825
No upstream upstream-revision format specified, trying tag:v20210825
No upstream upstream-revision format specified, trying tag:v.20210825
No upstream upstream-revision format specified, trying tag:release-20210825
No upstream upstream-revision format specified, trying tag:20210825_release
No upstream upstream-revision format specified, trying tag:20210825
No upstream upstream-revision format specified, trying tag:version-20210825
No upstream upstream-revision format specified, trying tag:sparsebitset-20210825-release
No upstream upstream-revision format specified, trying tag:sparsebitset-v20210825
brz: ERROR: Unable to find the needed upstream tarball for package sparsebitset, version 20210825.