Starting with docker-build-step 1.9, the plug-in is non-functional at least in free style build jobs (as I assume this version was somehow tested before release, it may work in other job types).

Error message:

FATAL: Unable to serialize org.jenkinsci.plugins.dockerbuildstep.DockerBuilder$DockerCmdCallable@48869354
java.io.IOException: Unable to serialize org.jenkinsci.plugins.dockerbuildstep.DockerBuilder$DockerCmdCallable@48869354
at hudson.remoting.UserRequest.serialize(UserRequest.java:166)
at hudson.remoting.UserRequest.<init>(UserRequest.java:62)
at hudson.remoting.Channel.call(Channel.java:738)
at org.jenkinsci.plugins.dockerbuildstep.DockerBuilder.perform(DockerBuilder.java:67)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:756)
at hudson.model.Build$BuildExecution.build(Build.java:198)
at hudson.model.Build$BuildExecution.doRun(Build.java:159)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:529)
at hudson.model.Run.execute(Run.java:1706)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:232)
Caused by: java.io.NotSerializableException: hudson.model.FreeStyleBuild
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
at hudson.remoting.UserRequest._serialize(UserRequest.java:155)
at hudson.remoting.UserRequest.serialize(UserRequest.java:164)
... 12 more