The current regular expression for the binary version detection doesn't recognize minor (eg. 77.0.1) and esr (eg. 68.0esr) releases:

https://searchfox.org/mozilla-central/rev/5a4aaccb28665807a6fd49cf48367d47fbb5a19a/testing/geckodriver/src/capabilities.rs#82

The version is always cut-off after the second number. For the above it means we get these versions: 77.0, and 68.0.

This case happens when there is no .ini file present. So probably on nix systems where a softlink is placed as /usr/bin/firefox.

As it looks like this is a problematic issue for all users of some Linux distributions where /usr/bin/firefox is a bash script linking to the real Firefox executable. None of them are able to launch Firefox. We should get this fixed asap and do a follow-up release.

James can you fix that regression? Thanks.

The appropriate geckodriver issue can be found at: https://github.com/mozilla/geckodriver/issues/1756

James, with bug 1657876 fixed what would be left-over to do here? Or is it just a dupe?