Merge pull request #29 from dwnusbaum/JENKINS-44486

[JENKINS-44486] Prevent UnsupportedOperationException when installing plugins with custom health checks.
jenkinsci · Jan 27, 2018 · 8cbd81e · 8cbd81e
2 parents 987c6db + 8487d1b
commit 8cbd81e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/main/java/jenkins/metrics/api/Metrics.java b/src/main/java/jenkins/metrics/api/Metrics.java
@@ -603,7 +603,7 @@ private void execute(TaskListener listener) throws IOException, InterruptedExcep
             reindexAccessKeys();
             HealthCheckRegistry registry = healthCheckRegistry();
             // update the active health checks
-            Set<String> defined = registry.getNames();
+            Set<String> defined = new HashSet<String>(registry.getNames());
             Set<String> removed = new HashSet<String>(defined);
             Jenkins jenkins = Jenkins.getInstance();
             if (jenkins != null) {