Hi all,

Do anyone knows what could change lately which makes the compiler fail if
jetty annotations is in your classpath.

The way to reproduce is compiling any project which jetty-annotations.jar
before  before gwt-dev.jar.

Attached trace.

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[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for 
com.vaadin.prototype.wc:v-demo:war:1.0-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for 
org.apache.maven.plugins:maven-war-plugin is missing. @ line 207, column 21
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten 
the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support 
building such malformed projects.
[WARNING] 
[INFO] 
[INFO] Using the builder 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder
 with a thread count of 1
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Demo project 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ v-demo ---
[INFO] Deleting /Users/manolo/eclipse/luna/v-demo/target
[INFO] 
[INFO] --- maven-resources-plugin:2.5:copy-resources (copy-resources) @ v-demo 
---
[debug] execute contextualize
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ v-demo ---
[debug] execute contextualize
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory 
/Users/manolo/eclipse/luna/v-demo/src/main/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.5.1:compile (default-compile) @ v-demo ---
[INFO] Compiling 3 source files to 
/Users/manolo/eclipse/luna/v-demo/target/v-demo-1.0-SNAPSHOT/WEB-INF/classes
[INFO] 
[INFO] --- maven-resources-plugin:2.5:testResources (default-testResources) @ 
v-demo ---
[debug] execute contextualize
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory 
/Users/manolo/eclipse/luna/v-demo/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.5.1:testCompile (default-testCompile) @ 
v-demo ---
[INFO] Not compiling test sources
[INFO] 
[INFO] --- maven-surefire-plugin:2.8.1:test (default-test) @ v-demo ---
[INFO] Tests are skipped.
[INFO] 
[INFO] --- gwt-maven-plugin:2.7.0-SNAPSHOT:compile (default) @ v-demo ---
[INFO] auto discovered modules [com.vaadin.prototype.wc.gwt.Demo]
[INFO] Compiling module com.vaadin.prototype.wc.gwt.Demo
[INFO] [ERROR] Unexpected internal compiler error
[INFO] java.lang.IncompatibleClassChangeError: class 
com.google.gwt.dev.javac.asm.CollectMethodData has interface 
org.objectweb.asm.MethodVisitor as super class
[INFO]  at java.lang.ClassLoader.defineClass1(Native Method)
[INFO]  at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
[INFO]  at 
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[INFO]  at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
[INFO]  at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
[INFO]  at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
[INFO]  at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[INFO]  at java.security.AccessController.doPrivileged(Native Method)
[INFO]  at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
[INFO]  at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[INFO]  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
[INFO]  at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[INFO]  at java.lang.Class.getDeclaredMethods0(Native Method)
[INFO]  at java.lang.Class.privateGetDeclaredMethods(Class.java:2688)
[INFO]  at java.lang.Class.getDeclaredMethod(Class.java:2115)
[INFO]  at 
java.io.ObjectStreamClass.getPrivateMethod(ObjectStreamClass.java:1431)
[INFO]  at java.io.ObjectStreamClass.access$1700(ObjectStreamClass.java:72)
[INFO]  at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:494)
[INFO]  at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:468)
[INFO]  at java.security.AccessController.doPrivileged(Native Method)
[INFO]  at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:468)
[INFO]  at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:365)
[INFO]  at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:602)
[INFO]  at 
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1623)
[INFO]  at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
[INFO]  at 
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
[INFO]  at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
[INFO]  at 
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
[INFO]  at 
java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:501)
[INFO]  at 
com.google.gwt.dev.javac.CachedCompilationUnit.readObject(CachedCompilationUnit.java:202)
[INFO]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[INFO]  at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[INFO]  at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[INFO]  at java.lang.reflect.Method.invoke(Method.java:483)
[INFO]  at 
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
[INFO]  at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1896)
[INFO]  at 
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
[INFO]  at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
[INFO]  at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1707)
[INFO]  at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1345)
[INFO]  at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
[INFO]  at 
com.google.gwt.dev.javac.CompilationUnitArchive.readObject(CompilationUnitArchive.java:124)
[INFO]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[INFO]  at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[INFO]  at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[INFO]  at java.lang.reflect.Method.invoke(Method.java:483)
[INFO]  at 
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
[INFO]  at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1896)
[INFO]  at 
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
[INFO]  at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
[INFO]  at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
[INFO]  at 
com.google.gwt.dev.javac.CompilationUnitArchive.createFromStream(CompilationUnitArchive.java:59)
[INFO]  at 
com.google.gwt.dev.javac.CompilationUnitArchive.createFromURL(CompilationUnitArchive.java:66)
[INFO]  at 
com.google.gwt.dev.ArchivePreloader.preloadArchives(ArchivePreloader.java:62)
[INFO]  at com.google.gwt.dev.Precompile.precompile(Precompile.java:246)
[INFO]  at com.google.gwt.dev.Precompile.precompile(Precompile.java:229)
[INFO]  at com.google.gwt.dev.Precompile.precompile(Precompile.java:145)
[INFO]  at com.google.gwt.dev.Compiler.run(Compiler.java:204)
[INFO]  at com.google.gwt.dev.Compiler.run(Compiler.java:156)
[INFO]  at com.google.gwt.dev.Compiler$1.run(Compiler.java:118)
[INFO]  at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)
[INFO]  at 
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)
[INFO]  at com.google.gwt.dev.Compiler.main(Compiler.java:125)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.371 s
[INFO] Finished at: 2014-10-01T23:29:58+01:00
[INFO] Final Memory: 31M/125M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal 
org.codehaus.mojo:gwt-maven-plugin:2.7.0-SNAPSHOT:compile (default) on project 
v-demo: Command [[
...
[ERROR] ]] failed with status 1
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e 
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please 
read the following articles:
[ERROR] [Help 1] 
http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

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