When trying to execute Maven 2 executable on slave node from a build configured
as "free-style software project" and a build step of type "Invoke top-level
Maven targets" it cannot find mvn executable:

Started by user krystian.nowak
Building remotely on slave01.myorg.org
Updating https://svn.myorg.org/trunk
At revision 35030
no change for https://svn.myorg.org/trunk since the previous build
[ant] $ ant -file build.xml
Buildfile: build.xml

update-settings:
[copy] Copying 1 file to /home/tomcat/.hudson/workspace/common-resources-public

BUILD SUCCESSFUL
Total time: 0 seconds
[trunk] $ mvn -f java/pom.xml clean install
FATAL: command execution failed
java.io.IOException: Cannot run program "mvn" (in directory
"/home/tomcat/.hudson/workspace/common-resources-public/trunk"):
java.io.IOException: error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)
at hudson.Proc$LocalProc.<init>(Proc.java:132)
at hudson.Proc$LocalProc.<init>(Proc.java:110)
at hudson.Launcher$LocalLauncher.createLocalProc(Launcher.java:359)
at hudson.Launcher$LocalLauncher.launch(Launcher.java:342)
at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:501)
at hudson.Launcher$RemoteLaunchCallable.call(Launcher.java:485)
at hudson.remoting.UserRequest.perform(UserRequest.java:92)
at hudson.remoting.UserRequest.perform(UserRequest.java:46)
at hudson.remoting.Request$2.run(Request.java:236)
at java.util.concurrent.Executors$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:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.IOException: java.io.IOException: error=2, No such file or
directory
at java.lang.UNIXProcess.<init>(UNIXProcess.java:148)
at java.lang.ProcessImpl.start(ProcessImpl.java:65)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:452)
... 15 more
Recording test results
Sending e-mails to: failures@myorg.org
Finished: FAILURE

It does not happen if it is built on master node.

It does not occur for "maven2 project" type.

On slave node mvn is in exactly the same place as on master node:
[tomcat@slave01 ~]$ which mvn
/usr/local/maven/bin/mvn
[tomcat@master ~]$ which mvn
/usr/local/maven/bin/mvn

Top level Maven 2 configuration is:
Maven installation:
name: 2.0
MAVEN_HOME: /usr/local/maven

Hudson ver. 1.297
Maven Integration plugin ver. 1.297
Hudson SSH Slaves plugin ver. 0.4
(Launch method: Launch slave agents on Linux machines via SSH)