Here is the link to the console view:
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/linux-code-coverage-generation

No bots seem to be connected.

This is a LUCI builder, which means there is no master to restart. The builder exists, but has no bots assigned to it - something is probably misconfigured. Let me take a closer look...

Thanks for the pointers Sergey. The above mentioned two CLs are the only two I landed to configure this builder, not sure if I missed anything.

The corresponding pending task: https://chromium-swarm.appspot.com/task?id=3dc6334a78bd8710 reports that it has 0 bots to run on, while the assigned bot https://chromium-swarm.appspot.com/bot?id=swarm2226-c4 seems to exist and sitting idle.

The reason, it seems, the bot currently belongs to pool:unassigned, while the builder expects it to be in pool:luci.chromium.ci. Apparently, it was removed in https://crrev.com/i/631187 (bad rebase?).

So you just need to re-land your bots.cfg change, and it should work. Assigning back to you.

+hinoka@ FYI - in case the above CL was generated by a script (it deleted a recently added bot).