case arvados.ContainerStateQueued:
if sch.maxConcurrency > 0 && trying >= sch.maxConcurrency {
logger.Tracef("not locking: already at maxConcurrency %d", sch.maxConcurrency)
case arvados.ContainerStateQueued:
if sch.maxConcurrency > 0 && trying >= sch.maxConcurrency {
logger.Tracef("not locking: already at maxConcurrency %d", sch.maxConcurrency)