Intermittently getting bors crashed with status 500 without any message

Support
#1

Hi Team,

Some of our batch runs fails with this error:-

{{:badmatch, {:error, :push, 500, ""}},
 [
   {BorsNG.Worker.Batcher, :complete_batch, 3,
    [file: 'lib/worker/batcher.ex', line: 579]},
   {BorsNG.Worker.Batcher, :maybe_complete_batch, 1,
    [file: 'lib/worker/batcher.ex', line: 537]},
   {BorsNG.Worker.Batcher, :handle_cast, 2,
    [file: 'lib/worker/batcher.ex', line: 90]},
   {:gen_server, :try_dispatch, 4,
    [file: 'gen_server.erl', line: 637]},
   {:gen_server, :handle_msg, 6,
    [file: 'gen_server.erl', line: 711]},
   {:proc_lib, :init_p_do_apply, 3,
    [file: 'proc_lib.erl', line: 249]}
 ]}

There is no error message for us to know what might be going wrong.
Also, one pattern I have observed is it happens only when bors build runs on batch PR's. For individual PR's it has never happened
Also, All the checks/validations involved in our pipeline do pass successfully for this batch run but still bors end up with this crash.

Any help would be highly appreciated. Thanks!

#2

The empty 500 error response from Github on batches looks very similar to Empty "Additional Info" section on failed batch PR merge . Did this start happening some point in the last couple of days by any chance? We've recently started getting errors on all attempts to merge batches (single PRs work fine)

#3

Yes @mavnn, has started happening since last 2 days.
Before that did not have any issues. And yes, it happens only for batch PRs, works fine for single PR's
Looks like similar issue