Wrong error message when invalid integer is given to argument `--jobs`
$ evariste -jX foo.setup
Traceback (most recent call last):
File "~/.virtualenvs/evs/bin/evariste", line 9, in <module>
load_entry_point('Evariste', 'console_scripts', 'evariste')()
File "~/.virtualenvs/evs/evariste/__main__.py", line 40, in main
arguments = get_options()
File "~/.virtualenvs/evs/evariste/options.py", line 237, in get_options
return commandline_parser().parse_args(namespace=Options())
File "~/.virtualenvs/evs/evariste/options.py", line 160, in parse_args
setup=setup,
File "~/.virtualenvs/evs/evariste/options.py", line 116, in get_value
return self.process_arg(value)
File "~/.virtualenvs/evs/evariste/options.py", line 62, in _itemgetint
return int(value[0])
ValueError: invalid literal for int() with base 10: 'X'