message: collective_param_resolver_local.cc: delete DCHECK(!ir->out_mu.try_lock()); in a lambda
  UNLOCK_FUNCTION(ir->out_mu) annotates that the lock is held on entry.
  try_lock() should not be called.
diff: @@ -522,7 +522,6 @@ void CollectiveParamResolverLocal::CallInitInstanceSharedParams(
  InitInstanceSharedParams(
  gr, cp, ir,
  [this, ir, done](const Status& s) UNLOCK_FUNCTION(ir->out_mu) {
  - DCHECK(!ir->out_mu.try_lock());
  DCHECK(ir->out_mu_available);
  ir->status.Update(s);
  ir->out_mu.unlock();
  