Task minerprotocols causes panic #1119
Description
Describe the bug:
During the processing of the minerprotocols survey task, we hit a panic.
daemon panic: runtime error: invalid memory address or nil pointer dereference
daemon [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x211a6df]
daemon
daemon goroutine 95743 [running]:
daemon github.com/filecoin-project/lily/tasks/survey/minerprotocols.getMinerAddrInfo({{{0xc0b3faf6b8, 0x4}}, {{0xc0b3faf6c4, 0x4}}, {{0x0, 0x0}}, {0xc062812620, 0x1, 0x1}, 0xffffffffffffffff, ...})
daemon /go/src/github.com/filecoin-project/lily/tasks/survey/minerprotocols/minerprotocols.go:205 +0x7f
daemon github.com/filecoin-project/lily/tasks/survey/minerprotocols.fetchMinerProtocolModel({0x560e0a8, 0xc085c0b6e0}, {0x7ed8569c4688, 0xc0004ef680}, {{0xc0ba1805f0?, 0xc08b9a7f01?}}, {{{0xc0b3faf6b8, 0x4}}, {{0xc
0b3faf6c4, 0x4}}, ...}, ...)
daemon /go/src/github.com/filecoin-project/lily/tasks/survey/minerprotocols/minerprotocols.go:155 +0xf8
daemon github.com/filecoin-project/lily/tasks/survey/minerprotocols.(*Task).Process.func1()
daemon /go/src/github.com/filecoin-project/lily/tasks/survey/minerprotocols/minerprotocols.go:124 +0x138
daemon github.com/gammazero/workerpool.worker(0xc0b801a5b0?)
daemon /go/pkg/mod/github.com/gammazero/[email protected]/workerpool.go:243 +0x29
daemon created by github.com/gammazero/workerpool.startWorker
daemon /go/pkg/mod/github.com/gammazero/[email protected]/workerpool.go:234 +0x65
Looks like a nil is being returned from api.StateMinerInfo(ctx, miner, headTs.Key()) even though no error is being return.
Steps to Reproduce:
Run minerprotocols survey task. Wait until the API finds itself in the condition that causes api.StateMinerInfo(ctx, miner, headTs.Key()) to return nil, nil. 😢