adds debug message in case of read_value failure

4 jobs for 3.10.1 in 4 minutes and 35 seconds (queued for 2 seconds)
latest
Status Name Job ID Coverage
  Build
canceled build-gcc #1144307
docker

00:04:35

canceled build-intel #1144308
docker

00:04:35

 
  Test
canceled test-gcc #1144309
docker

canceled test-intel #1144310
docker