EmailsOnPushWorker fails on new branch pushes
https://sentry.gitlap.com/gitlab/gitlabcom/issues/8866/
Rugged::OdbError: Object not found - no match for id (0000000000000000000000000000000000000000)
lib/gitlab/metrics/instrumentation.rb:152:in `merge_base'
trans.measure_method(#{label.inspect}) { super }
lib/gitlab/metrics/instrumentation.rb:152:in `block in merge_base'
trans.measure_method(#{label.inspect}) { super }
lib/gitlab/metrics/method_call.rb:23:in `measure'
retval = yield
lib/gitlab/metrics/transaction.rb:71:in `measure_method'
@methods[name].measure(&block)
lib/gitlab/metrics/instrumentation.rb:152:in `merge_base'
trans.measure_method(#{label.inspect}) { super }
...
(35 additional frame(s) were not displayed)