My devs are complaining of builds failing randomly when a stage starts. The builds fail when attempting to run "sh" in a container in the pods running the job.
Here is the error message I see. 

[Pipeline] shrpc error: code = 2 desc = oci runtime error: exec failed: container_linux.go:247: starting container process caused "process_linux.go:87: adding pid 3786794 to cgroups caused \"failed to write 3786794 to cgroup.procs: write /sys/fs/cgroup/cpu,cpuacct/kubepods/besteffort/pod70971cd7-153a-11e9-9fe5-42010a567404/6b66fd31d9718f168c34810477e328045af5caead06e9e7f48ed3b9431eb3d37/cgroup.procs: invalid argument\""[Pipeline] echoError: java.io.IOException: Pipe closed...
...
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ERROR: script returned exit code 1
Finished: FAILURE