def guess_contains_curl(lines):
    """Tries to determine if a file includes curl
    """
    for line in lines:
        if 'An unknown option was passed in to libcurl' in line:
            return 1
        if (
            'A requested feature, protocol or option was not found built-in in this libcurl due to a build-time decision.'
             in line):
            return 1
        if 'CLIENT libcurl 7.' in line:
            return 1
    return 0
