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adobefonts profile causing traceback

See original GitHub issue

Observed behaviour

fontbakery check-adobefonts causes traceback during reporting, resulting in empty report file.

Expected behaviour

No traceback occurs and report file is not empty.

Resources and exact process needed to replicate

Download NotoMono-Regular.ttf or use any handy ttf file.
From command line run:

fontbakery check-adobefonts --html out.html NotoMono-Regular.ttf

Tests seem to run to completion but results in traceback:

DONE!

Traceback (most recent call last):
  File "/usr/local/bin/fontbakery", line 11, in <module>
    load_entry_point('fontbakery', 'console_scripts', 'fontbakery')()
  File "/smith/fontbakery/Lib/fontbakery/cli.py", line 22, in main
    "fontbakery.commands." + subcommand_module, run_name='__main__')
  File "/usr/lib/python3.6/runpy.py", line 208, in run_module
    return _run_code(code, {}, init_globals, run_name, mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/smith/fontbakery/Lib/fontbakery/commands/check_adobefonts.py", line 30, in <module>
    sys.exit(main())
  File "/smith/fontbakery/Lib/fontbakery/commands/check_profile.py", line 311, in main
    args.html.write(hr.get_html())
  File "/smith/fontbakery/Lib/fontbakery/reporters/html.py", line 65, in get_html
    self.html_for_check(result),
  File "/smith/fontbakery/Lib/fontbakery/reporters/html.py", line 106, in html_for_check
    check["logs"].sort(key=lambda c: LOGLEVELS.index(c["status"]))
  File "/smith/fontbakery/Lib/fontbakery/reporters/html.py", line 106, in <lambda>
    check["logs"].sort(key=lambda c: LOGLEVELS.index(c["status"]))
ValueError: 'DEBUG' is not in list

and the out.html file is zero length.

Same things happens with --ghmarkdown reporting.

However, if neither reporter is used, e.g., fontbakery check-adobefonts NotoMono-Regular.ttf then no traceback occurs.