https://tools.taskcluster.net/groups/LYVMezwKRsajJJK--X5XnQ/tasks/C5TEXTd-RXG6o4Gj7GCAVw/runs/0 this isn't a normal use case, so the priority isn't high, but nevertheless we should fix this since it will be easy. Basically test-verify doesn't have a group in treeherder, so when we try to copy the groupSymbol from the original job we fail :( Lets check for that before accessing it, in fact all fields.

this would be a fixed in backfill.py: https://searchfox.org/mozilla-central/source/taskcluster/taskgraph/actions/backfill.py [task 2018-07-05T17:06:01.872Z] Traceback (most recent call last): [task 2018-07-05T17:06:01.872Z] File "/builds/worker/checkouts/gecko/taskcluster/mach_commands.py", line 250, in action_callback [task 2018-07-05T17:06:01.872Z] test=False) [task 2018-07-05T17:06:01.872Z] File "/builds/worker/checkouts/gecko/taskcluster/taskgraph/actions/registry.py", line 314, in trigger_action_callback [task 2018-07-05T17:06:01.872Z] cb(Parameters(**parameters), graph_config, input, task_group_id, task_id, task) [task 2018-07-05T17:06:01.872Z] File "/builds/worker/checkouts/gecko/taskcluster/taskgraph/actions/backfill.py", line 182, in backfill_action [task 2018-07-05T17:06:01.872Z] push_params, push_decision_task_id, push, modifier=modifier) [task 2018-07-05T17:06:01.872Z] File "/builds/worker/checkouts/gecko/taskcluster/taskgraph/actions/util.py", line 139, in create_tasks [task 2018-07-05T17:06:01.872Z] {l: modifier(full_task_graph[l]) for l in target_graph.nodes}, [task 2018-07-05T17:06:01.873Z] File "/builds/worker/checkouts/gecko/taskcluster/taskgraph/actions/util.py", line 139, in <dictcomp> [task 2018-07-05T17:06:01.873Z] {l: modifier(full_task_graph[l]) for l in target_graph.nodes}, [task 2018-07-05T17:06:01.873Z] File "/builds/worker/checkouts/gecko/taskcluster/taskgraph/actions/backfill.py", line 178, in modifier [task 2018-07-05T17:06:01.873Z] del task.task['extra']['treeherder']['groupSymbol'] [task 2018-07-05T17:06:01.873Z] KeyError: u'groupSymbol'