liggitt: Automated cherry pick of #104969: Propagate conversion errors

JobBuild
104989
09-14 01:35
59e7d199
09-14 01:32
pull-kubernetes-conformance-kind-ga-only-parallel 1442365478440800256 1437590043047759872
pull-kubernetes-dependencies 1442365477710991360 1437590042330533888
pull-kubernetes-e2e-gce-100-performance 1442365477681631232 1437590042301173760
pull-kubernetes-e2e-gce-ubuntu-containerd 1442365477610328064 1437590042225676288
pull-kubernetes-e2e-kind 1442365477773905920 1437590042393448448
pull-kubernetes-e2e-kind-ipv6 1442365477916512256 1437590042527666176
pull-kubernetes-integration 1442365477744545792 1437590042364088320
pull-kubernetes-node-e2e 1442365477639688192 1437590042255036416
pull-kubernetes-typecheck 1442365477807460352 1437590042431197184
pull-kubernetes-unit 1442365479283855360 1437590043886620672
pull-kubernetes-verify 1442365477845209088 1437590042468945920
pull-kubernetes-verify-govet-levee 1442365477887152128 1437590042498306048