test: kill eight surviving mutants in formatter, parser and blocker analysis - #52

Command 'git' failed with args '-c user.name=github-action-benchmark -c user.email=github@users.noreply.github.com -c http.https://github.com/.extraheader= switch gh-pages': fatal: invalid reference: gh-pages : Error: The process '/usr/bin/git' failed with exit code 128