Comment 3 for bug 1770736

Some of the lines? 99% percent of your log is related to running Steam...

Only line 2378 Haguichi is reporting unable to reach the logind[1] managers' DBus interface. That's an issue with your OS. You seem to have numerous DBus issues. Why don't you report your problems at crouton issue tracker[2] itself?

[1] https://www.freedesktop.org/wiki/Software/systemd/logind/
[2] https://github.com/dnschneid/crouton/issues