Comment 13 for bug 1839616

This is the unit log from my current test run; https://paste.ubuntu.com/p/qwDDDQKqr2/

We hit the failure here:
2020-08-11 03:29:23 ERROR juju-log Installation failed cmd="['snap', 'install', '--channel=stable', 'mysql-shell']" returncode=1 output="b'error: cannot perform the following tasks:\n- Mount snap "mysql-shell" (4) ([start snap-mysql\\x2dshell-4.mount] failed with exit status 1: Job failed. See "journalctl -xe" for details.\n)\n'"

And again here, 10 hours later after 'juju resolved':
2020-08-11 13:57:39 ERROR juju-log Installation failed cmd="['snap', 'install', '--channel=stable', 'mysql-shell']" returncode=1 output="b'error: cannot perform the following tasks:\n- Mount snap "mysql-shell" (4) ([start snap-mysql\\x2dshell-4.mount] failed with exit status 1: Job failed. See "journalctl -xe" for details.\n)\n'"

Another 'juju resolved' 15 minutes later got us past it:
2020-08-11 14:13:05 DEBUG juju-log Installation successful cmd="['snap', 'install', '--channel=stable', 'mysql-shell']" output="b'mysql-shell 8.0.20 from Canonical* installed\n'"

So, it seems unlikely to be related to timing on getting the core snap installed.