When the m2 build has completed successfully, Hudson fails when trying to
fingerprint files.
As a workaround I have downgraded to version 1.204 where the same error occurs,
but the build is marked as ok.

Here's the stacktrace from the build console output:

ERROR: Asynchronous execution failure
java.util.concurrent.ExecutionException: java.lang.AssertionError
at hudson.remoting.Channel$1.adapt(Channel.java:423)
at hudson.remoting.Channel$1.adapt(Channel.java:418)
at hudson.remoting.FutureAdapter.get(FutureAdapter.java:32)
at hudson.maven.MavenBuilder.call(MavenBuilder.java:140)
at hudson.maven.MavenModuleSetBuild$Builder.call(MavenModuleSetBuild.java:522)
at hudson.maven.MavenModuleSetBuild$Builder.call(MavenModuleSetBuild.java:468)
at hudson.remoting.UserRequest.perform(UserRequest.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:23)
at hudson.remoting.Request$2.run(Request.java:200)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.AssertionError
at hudson.model.FingerprintParams.<init>(FingerprintMap.java:84)
at hudson.model.FingerprintMap.getOrCreate(FingerprintMap.java:48)
at hudson.maven.reporters.MavenFingerprinter$1.call(MavenFingerprinter.java:83)
at hudson.maven.reporters.MavenFingerprinter$1.call(MavenFingerprinter.java:72)
at hudson.maven.MavenBuild$ProxyImpl.execute(MavenBuild.java:266)
at hudson.maven.MavenBuildProxy$Filter$AsyncInvoker.call(MavenBuildProxy.java:191)
at hudson.remoting.UserRequest.perform(UserRequest.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:23)
at hudson.remoting.Request$2.run(Request.java:200)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)