More descriptive error messages

[mkenigs]

I was trying to run a task on a host without make installed, and even with -vvv, there's no indication anything other than the task itself failed. Would be nice if command not found or something else more descriptive was output

[ip        ] ** Fetching task: 1 [/var/lib/restraint/tests/github.com/beaker-project/beaker-core-tasks/archive/master.zip/command]
[ip        ] ** Extracting command/
[ip        ] ** Extracting command/Makefile
[ip        ] ** Extracting command/PURPOSE
[ip        ] ** Extracting command/runtest.sh
[ip        ] ** Fetch Summary: Match 4, Nonmatch 149
[ip        ] ** Preparing metadata
[ip        ] use_pty:FALSE make testinfo.desc
[ip        ] ** Completed Task : 1
One or more tasks failed [restraint-error-quark, 10]

[danrodrig]

This is an issue affecting restraint in client/server operation. Due to how communication is done, there are some error messages from harness that are being suppressed. Indeed, this should be fixed.

Thanks for reporting, @mkenigs

[danrodrig]

The fix for this is more complicated that adding a print somewhere. Overall, is about fixing logging in client/server, and going further, the communication between client and server needs to be redesign.

[dav-pascual]

I came across this issue. It would be good to fix this