missing read action

[gavinking]

Read access is allowed from event dispatch thread or inside read-action only (see com.intellij.openapi.application.Application.runReadAction())
Details: Current thread: Thread[ApplicationImpl pooled thread 28,4,main] 1043176694
; dispatch thread: false; isDispatchThread(): false
SystemEventQueueThread: Thread[AWT-EventQueue-0 2016.1.3#IC-145.1617.8 IDEA, eap:false, os:Mac OS X 10.11.5, java-version:JetBrains s.r.o 1.8.0_76-release-b198,6,main] 1805001065
java.lang.Throwable
    at com.intellij.openapi.diagnostic.Logger.error(Logger.java:138)
    at com.intellij.openapi.application.impl.ApplicationImpl.assertReadAccessAllowed(ApplicationImpl.java:1054)
    at com.intellij.openapi.module.impl.ModuleManagerImpl.moduleDependencyComparator(ModuleManagerImpl.java:541)
    at com.intellij.openapi.module.ModuleUtilCore.findModuleForPsiElement(ModuleUtilCore.java:115)
    at org.intellij.plugins.ceylon.ide.ceylonCode.psi.CeylonFile.retrieveProjectPhasedUnit(CeylonFile.java:82)
    at org.intellij.plugins.ceylon.ide.ceylonCode.psi.CeylonFile.getLocalAnalysisResult(CeylonFile.java:152)
    at org.intellij.plugins.ceylon.ide.ceylonCode.model.CeylonModelManager$1$1syntaxErrorsWhenOnlyOneCeylonChange_.syntaxErrorsWhenOnlyOneCeylonChange(CeylonModelManager.ceylon:234)
    at org.intellij.plugins.ceylon.ide.ceylonCode.model.CeylonModelManager$1.$call$(CeylonModelManager.ceylon:248)
    at ceylon.interop.java.JavaRunnable.run(JavaRunnable.ceylon:7)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
    at com.intellij.util.Alarm$Request$1.run(Alarm.java:378)
    at com.intellij.util.Alarm$Request.run(Alarm.java:389)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at com.intellij.util.concurrency.SchedulingWrapper$MyScheduledFutureTask.run(SchedulingWrapper.java:227)
    at com.intellij.util.concurrency.BoundedTaskExecutor$2.run(BoundedTaskExecutor.java:187)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)