Handle errors more gracefully in on-run-start/end context

[drewbanin]

Issue

Issue description

If errors occur in on-run-start/end, dbt will not provide the usual end of run summary. As such, errors that occurred during the run will not be shown.

Example output:

07:30:13 | 34 of 34 ERROR relation analytics.my_model......... [�ERROR]
Database error while running on-run-end
Database Error
SSL SYSCALL error: EOF detected

System information

The output of dbt --version:

v0.12.2

[gmile]

I don't think it's the case anymore. I am experiencing SSL SYSCALL error: EOF detected sometimes too. The summary doesn't get garbled like in the example above.

[jtcohen6]

Good point @gmile. I think this improved in dbt v0.14.0 (July 2019) with the addition of stdout logging for on-run-start and on-run-end (#1440). I'm going to close this issue as an effective duplicate of #696.