refactor: err msgs 'cannot' > 'failed to'

in nearly all cases 'cannot' was used when an action was tried and
failed. 'failed to' is strictly better because:
* just because the action didn't work that time doesnt mean it
  cannot work
* it is better at drawing the users attention to a problem

1 files changed, 1 insertions, 1 deletions

diff --git a/test_utils/src/git.rs b/test_utils/src/git.rs
index 470cd83..2562799 100644
--- a/test_utils/src/git.rs
+++ b/test_utils/src/git.rs
@@ -265,7 +265,7 @@ impl GitTestRepo {
         let branch = self
             .git_repo
             .find_branch(branch_name, git2::BranchType::Local)
-            .context(format!("cannot find branch {branch_name}"))?;
+            .context(format!("failed to find branch {branch_name}"))?;
         Ok(branch.into_reference().peel_to_commit()?.id())
     }