openzfs-regression-tests job has java.io.IOException

[ahrens]

See e.g. http://psurya-jenkins.dcenter:8080/job/openzfs-regression-tests/36/console

Could not update commit status of the Pull Request on GitHub.
java.io.IOException: {"message":"Validation Failed","errors":[{"resource":"Status","code":"custom","field":"target_url","message":"target_url must use http(s) scheme"}],"documentation_url":"https://developer.github.com/v3/repos/statuses/#create-a-status"}
    at org.kohsuke.github.Requester.handleApiError(Requester.java:503)
    at org.kohsuke.github.Requester._to(Requester.java:248)
    at org.kohsuke.github.Requester.to(Requester.java:194)
    at org.kohsuke.github.GHRepository.createCommitStatus(GHRepository.java:829)
    at org.jenkinsci.plugins.ghprb.extensions.status.GhprbSimpleStatus.createCommitStatus(GhprbSimpleStatus.java:213)
    at org.jenkinsci.plugins.ghprb.extensions.status.GhprbSimpleStatus.onBuildStart(GhprbSimpleStatus.java:149)
    at org.jenkinsci.plugins.ghprb.GhprbBuilds.onStarted(GhprbBuilds.java:122)
    at org.jenkinsci.plugins.ghprb.GhprbBuildListener.onStarted(GhprbBuildListener.java:24)
    at org.jenkinsci.plugins.ghprb.GhprbBuildListener.onStarted(GhprbBuildListener.java:17)
    at hudson.model.listeners.RunListener.fireStarted(RunListener.java:215)
    at hudson.model.Run.execute(Run.java:1737)
    at com.tikal.jenkins.plugins.multijob.MultiJobBuild.run(MultiJobBuild.java:73)
    at hudson.model.ResourceController.execute(ResourceController.java:98)
    at hudson.model.Executor.run(Executor.java:408)
Caused by: java.io.IOException: Server returned HTTP response code: 422 for URL: https://api.github.com/repos/openzfs/openzfs/statuses/8a0b8077093812ab9274f8255b9aa7bdad1a4e31
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1676)
    at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1674)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1672)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1245)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
    at org.kohsuke.github.Requester.parse(Requester.java:458)
    at org.kohsuke.github.Requester._to(Requester.java:227)
    ... 12 more
Caused by: java.io.IOException: Server returned HTTP response code: 422 for URL: https://api.github.com/repos/openzfs/openzfs/statuses/8a0b8077093812ab9274f8255b9aa7bdad1a4e31
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1627)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)
    at org.kohsuke.github.Requester.parse(Requester.java:454)
    ... 13 more