This task had a patch failure:

https://chromium-swarm.appspot.com/task?id=3ebe6787f6ac4310&refresh=10

[0:00:08] ===Applying patch ref===
[0:00:08] Repo is 'https://chromium.googlesource.com/angle/angle.git' @ 'refs/changes/81/1137881/3', ref is '6fb8ba4e866045dbcbeaabb6d58bb62f66e2c48c' ('refs/remotes/origin/master'), root is '/b/swarming/w/ir/cache/builder/src/third_party/angle'
[0:00:09] Merge base of refs/remotes/origin/master and 9ab71478b86af9f521b73cefc9ac229f93a5e8bf is 80d4ef1051d9426a25659d36e9efa12f76356ee7
[0:00:09] Failed to apply 'https://chromium.googlesource.com/angle/angle.git' @ 'refs/changes/81/1137881/3' to '6fb8ba4e866045dbcbeaabb6d58bb62f66e2c48c' at '/b/swarming/w/ir/cache/builder/src/third_party/angle'
[0:00:09] git returned non-zero exit status 1:
The previous cherry-pick is now empty, possibly due to conflict resolution.
If you wish to commit it anyway, use:
    git commit --allow-empty
If you wish to skip this commit, use:
    git reset
Then "git cherry-pick --continue" will resume cherry-picking
the remaining commits.

After which all other tasks had a patch failure:

https://chromium-swarm.appspot.com/task?id=3ebeba34851c5710&refresh=10
https://chromium-swarm.appspot.com/bot?id=swarm2237-c4&sort_stats=total%3Adesc

[0:00:10] ===Applying patch ref===
[0:00:10] Repo is 'https://chromium.googlesource.com/angle/angle.git' @ 'refs/changes/80/1048980/11', ref is '6fb8ba4e866045dbcbeaabb6d58bb62f66e2c48c' ('refs/remotes/origin/master'), root is '/b/swarming/w/ir/cache/builder/src/third_party/angle'
[0:00:10] Merge base of refs/remotes/origin/master and 595475d280e3f7bf802430b21b0a62b6c89d5c0a is 6fb8ba4e866045dbcbeaabb6d58bb62f66e2c48c
[0:00:10] Failed to apply 'https://chromium.googlesource.com/angle/angle.git' @ 'refs/changes/80/1048980/11' to '6fb8ba4e866045dbcbeaabb6d58bb62f66e2c48c' at '/b/swarming/w/ir/cache/builder/src/third_party/angle'
[0:00:10] git returned non-zero exit status 128:
error: a cherry-pick or revert is already in progress
hint: try "git cherry-pick (--continue | --quit | --abort)"
fatal: cherry-pick failed

This seems like an infra problem. Unsure of the scope of this but seems fairly serious. At least the bot should be fixed. Also likely the recipe should be made more robust. Troopers can you assist?