❯ hyperfine \  --warmup 3 \  --runs 10 \  --prepare 'git checkout master' \  --command-name 'libvcs 0.31.0' \  'py.test' \  --prepare 'git checkout pytest-config' \  --command-name 'with improved hg/git config fixtures' \  'py.test'Benchmark 1: libvcs 0.31.0  Time (mean ± σ):     15.150 s ±  0.751 s    [User: 16.650 s, System: 4.720 s]  Range (min … max):   14.235 s … 16.741 s    10 runsBenchmark 2: with improved hg/git config fixtures  Time (mean ± σ):     15.014 s ±  0.307 s    [User: 17.246 s, System: 4.865 s]  Range (min … max):   14.458 s … 15.642 s    10 runsSummary  with improved hg/git config fixtures ran    1.01 ± 0.05 times faster than libvcs 0.31.0