Task: sh comes from Steps

src/org/moodle/ci/Task.groovy

@@ -64,7 +64,7 @@ class Task {
         throw new Exception("I don't know what PHP Version to test against")
     }
 
-    def getPathToRunner(env) {
+    def getPathToRunner(env, steps) {
         def runner
         if (pathToRunner) {
             runner = new File(pathToRunner)
@@ -81,7 +81,7 @@ class Task {
 
             return runner.getAbsolutePath()
         } else {
-            def versionName = sh (
+            def versionName = steps.sh (
               script: 'grep "\\$branch" moodle/version.php | sed "s/^[^\']*\'\\([^\']*\\).*\$/\\1/"',
               returnStdout: true
               ).trim()

vars/runTask.groovy

@@ -50,7 +50,7 @@ def call(org.moodle.ci.Task task) {
 
             stage("Run Task") {
                 steps {
-                    sh task.getPathToRunner(env)
+                    sh task.getPathToRunner(env, steps)
                 }
             }