Duplicated error type.

## Got:
``` python
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
    FIXME line of source goes here
TypeError: TypeError: 'all() takes exactly 1 argument (3 given)'
```

## Expected:
``` python
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
    FIXME line of source goes here
TypeError: 'all() takes exactly 1 argument (3 given)'
```