$ pre-commit run ☃
An unexpected error has occurred: UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 0: ordinal not in range(128)
Check the log at ~/.pre-commit/pre-commit.log
$ cat ~/.pre-commit/pre-commit.log 
An unexpected error has occurred: UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 0: ordinal not in range(128)
Traceback (most recent call last):
  File "/home/asottile/workspace/pre-commit/pre_commit/error_handler.py", line 34, in error_handler
    yield
  File "/home/asottile/workspace/pre-commit/pre_commit/main.py", line 129, in main
    return run(runner, args)
  File "/home/asottile/workspace/pre-commit/pre_commit/commands/run.py", line 163, in run
    return _run_hook(runner, args, write=write)
  File "/home/asottile/workspace/pre-commit/pre_commit/commands/run.py", line 133, in _run_hook
    write('No hook with id `{0}`\n'.format(hook_id))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 0: ordinal not in range(128)