jenkins-timeout.groovy

def timeoutWithMsg(Map args) {
    try {
        args.body()
    } catch(err) {
        String user = err.getCauses()[0]?.getUser()?.toString()
        if (user == 'SYSTEM') {
            args.timeout()
        } else {
            args.abort(user)
        }
    }
}

    timeoutWithMsg(
        body: { ->
            //throw new IOException()
            1 +2
        },
        timeout: { ->
            println "timeout"
        },
        abort: { a ->
            println "aborted ${a}"
        }
    )