Failing to remove the repo doesn't cause non-0 exit code in `gtr rm`

[AlexeyDmitriev]

➜  gtr rm $(basename $PWD)    
==> Removing worktree: XXX
==> Running preRemove hooks...
[OK] Hook 1: test -L bazel-out && bazel clean --expunge && bazel shutdown || true
[OK] Hook 1 completed successfully
[x] Failed to remove worktree: fatal: '.../XXX' contains modified or untracked files, use --force to delete it
➜  echo $? 
0

I used gtr rm $(basename $PWD) && exit and expected that it will not close in this case