I'm' also having some trouble. I get errors related to both requestfactory 
and asm-parent.
You can see the error message and pom.xml at this gist: 
https://gist.github.com/tskardal/0d8287da4265c0fddfc8

I've created a project using the maven archetype, modified the versions and 
added the snapshot repos.

On Thursday, October 16, 2014 5:48:18 PM UTC+2, Drew Spencer wrote:
>
> Somehow I made the requestfactory error go away but I'm still getting this 
> one:
>
> [ERROR] Non-resolvable import POM: Could not find artifact 
> org.ow2.asm:asm-parent:pom:5.0.3 @ com.google.gwt:gwt:2.7.0-SNAPSHOT, 
> C:\Users\Drew\.m2\repository\com\google\gwt\gwt\2.7.0-SNAPSHOT\gwt-2.7.0-SNAPSHOT.pom,
>  
> line 74, column 25
>
> I'm using Eclipse Luna with maven 3.2.1. Very odd.
>
> On Thursday, 16 October 2014 13:55:12 UTC+1, Ümit Seren wrote:
>>
>> Hmm that's weird. I remember that when I tried to compile the same app 
>> with 2.7.0-SNAPSHOT (gwt-maven plugin) two weeks ago it worked fine with 
>> maven 3.0.5.
>>
>> However I have now a different issue: 
>>
>> I have used your gwt archetype (
>> https://github.com/tbroyer/gwt-maven-archetypes)  and I have three 
>> modules (app-client, app-server and app-shared) inside a parent pom project 
>> (app) . 
>>
>> When I run "mvn clean install" in app-client everything works fine (gwt 
>> compiles, finishes). 
>> However when I run "mvn clean install" in parent "app" pom projet I get 
>> following error: 
>>
>> [INFO]    Computing all possible rebind results for 
>> 'org.jboss.errai.marshalling.client.api.MarshallerFactory'
>> [INFO]       Rebinding 
>> org.jboss.errai.marshalling.client.api.MarshallerFactory
>> [INFO]          Invoking generator 
>> org.jboss.errai.marshalling.rebind.MarshallersGenerator
>> [INFO]             Generating Marshallers Bootstrapper...
>> [ERROR] java.util.concurrent.ExecutionException: 
>> java.lang.NullPointerException
>> [ERROR]         at 
>> java.util.concurrent.FutureTask.report(FutureTask.java:122)
>> [ERROR]         at 
>> java.util.concurrent.FutureTask.get(FutureTask.java:188)
>> [ERROR]         at 
>> org.jboss.errai.config.rebind.AsyncGenerators$FutureWrapper.get(AsyncGenerators.java:112)
>> [ERROR]         at 
>> org.jboss.errai.config.rebind.AsyncGenerators$FutureWrapper.get(AsyncGenerators.java:86)
>> [ERROR]         at 
>> org.jboss.errai.config.rebind.AbstractAsyncGenerator.startAsyncGeneratorsAndWaitFor(AbstractAsyncGenerator.java:188)
>> [ERROR]         at 
>> org.jboss.errai.marshalling.rebind.MarshallersGenerator.generate(MarshallersGenerator.java:226)
>> [ERROR]         at 
>> com.google.gwt.core.ext.IncrementalGenerator.generateNonIncrementally(IncrementalGenerator.java:40)
>>
>> [INFO] Caused by: java.lang.NullPointerException
>> [INFO]  at 
>> org.jboss.errai.codegen.util.ClassChangeUtil._findAllMatching(ClassChangeUtil.java:453)
>> [INFO]  at 
>> org.jboss.errai.codegen.util.ClassChangeUtil._findAllMatching(ClassChangeUtil.java:454)
>> [INFO]  at 
>> org.jboss.errai.codegen.util.ClassChangeUtil._findAllMatching(ClassChangeUtil.java:454)
>> [INFO]  at 
>> org.jboss.errai.codegen.util.ClassChangeUtil._findAllMatching(ClassChangeUtil.java:454)
>> [INFO]  at 
>> org.jboss.errai.codegen.util.ClassChangeUtil._findAllMatching(ClassChangeUtil.java:454)
>> [INFO]  at 
>> org.jboss.errai.codegen.util.ClassChangeUtil._findAllMatching(ClassChangeUtil.java:454)
>> [INFO]  at 
>> org.jboss.errai.codegen.util.ClassChangeUtil.findAllMatching(ClassChangeUtil.java:446)
>>
>>
>>
>>
>> On Thu, Oct 16, 2014 at 2:29 PM, Thomas Broyer <[email protected]> wrote:
>>
>>> This is strange, because I tested the samples with Maven 3.0.5 (this is 
>>> still my default version) and didn't have this problem :-/
>>>
>>> On Thu, Oct 16, 2014 at 2:11 PM, Ümit Seren <[email protected]> wrote:
>>>
>>>> no it didn't help unfortunately. 
>>>> But I upgraded to maven 3.2.1 and the error went away. 
>>>>
>>>>
>>>>
>>>>
>>>> On Thu, Oct 16, 2014 at 1:57 PM, Thomas Broyer <[email protected]> 
>>>> wrote:
>>>>
>>>>> gwt-maven-plugin snapshots are deployed to codehaus, but the plugin 
>>>>> depends on GWT snapshots which are at sonatype, and Maven thus uses the 
>>>>> pluginRepositories to download them as dependencies of the 
>>>>> gwt-maven-plugin 
>>>>> (it doesn't look like it uses the repositories listed in 
>>>>> gwt-maven-plugin's 
>>>>> own POM).
>>>>>
>>>>> Does it change anything if you declare google-snapshots as a 
>>>>> pluginRepository as well?
>>>>>
>>>>> On Thu, Oct 16, 2014 at 1:42 PM, Ümit Seren <[email protected]> 
>>>>> wrote:
>>>>>
>>>>>> I have the same issue with maven 3.0.5
>>>>>>
>>>>>> [ERROR] Failed to execute goal 
>>>>>> org.codehaus.mojo:gwt-maven-plugin:2.7.0-SNAPSHOT:compile (gwt-compile) 
>>>>>> on 
>>>>>> project genophenbrowser-client: Failed to resolve artifact: Some 
>>>>>> problems 
>>>>>> were encountered while processing the POMs:
>>>>>> [ERROR] [ERROR] Non-resolvable import POM: Could not find artifact 
>>>>>> com.google.web.bindery:requestfactory:pom:2.7.0-SNAPSHOT in 
>>>>>> sonatype-nexus-snapshots (
>>>>>> https://oss.sonatype.org/content/repositories/snapshots) @ 
>>>>>> com.google.gwt:gwt:2.7.0-SNAPSHOT, 
>>>>>> /home/GMI/uemit.seren/.m2/repository/com/google/gwt/gwt/2.7.0-SNAPSHOT/gwt-2.7.0-SNAPSHOT.pom,
>>>>>>  
>>>>>> line 50, column 25
>>>>>> [ERROR] [ERROR] Non-resolvable import POM: Could not find artifact 
>>>>>> org.ow2.asm:asm-parent:pom:5.0.3 @ com.google.gwt:gwt:2.7.0-SNAPSHOT, 
>>>>>> /home/GMI/uemit.seren/.m2/repository/com/google/gwt/gwt/2.7.0-SNAPSHOT/gwt-2.7.0-SNAPSHOT.pom,
>>>>>>  
>>>>>> line 74, column 25
>>>>>> [ERROR] for project
>>>>>> [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
>>>>>> uemit.seren@gmi-lws06:~/eclipse_workspaces/intellij/genophenbrowser/genophenbrowser-client$
>>>>>>  
>>>>>> mvn --version
>>>>>> Apache Maven 3.0.5
>>>>>> Maven home: /usr/share/maven
>>>>>> Java version: 1.7.0_72, vendor: Oracle Corporation
>>>>>> Java home: /usr/lib/jvm/java-7-oracle/jre
>>>>>> Default locale: de_DE, platform encoding: UTF-8
>>>>>> OS name: "linux", version: "3.13.0-37-generic", arch: "amd64", 
>>>>>> family: "unix"
>>>>>>
>>>>>>
>>>>>> This is how the repositories look like
>>>>>>
>>>>>> <pluginRepositories>
>>>>>>         <pluginRepository>
>>>>>>             <id>codehaus-snapshots</id>
>>>>>>             <url>
>>>>>> https://nexus.codehaus.org/content/groups/snapshots-group/</url>
>>>>>>             <releases>
>>>>>>                 <enabled>false</enabled>
>>>>>>             </releases>
>>>>>>             <snapshots>
>>>>>>                 <enabled>true</enabled>
>>>>>>             </snapshots>
>>>>>>         </pluginRepository>
>>>>>>     </pluginRepositories>
>>>>>>
>>>>>>
>>>>>> <repositories>
>>>>>> <repository>
>>>>>>             <id>google-snapshots</id>
>>>>>>             <url>
>>>>>> https://oss.sonatype.org/content/repositories/google-snapshots/</url>
>>>>>>             <snapshots>
>>>>>>                 <enabled>true</enabled>
>>>>>>             </snapshots>
>>>>>>             <releases>
>>>>>>                 <enabled>false</enabled>
>>>>>>             </releases>
>>>>>>         </repository>
>>>>>>     </repositories>
>>>>>>
>>>>>>
>>>>>> When I checked the 
>>>>>> https://gwt.googlesource.com/gwt/+/master/samples/dynatablerf/pom.xml 
>>>>>> sample it had also the  <url>
>>>>>> https://oss.sonatype.org/content/repositories/google-snapshots/</url> 
>>>>>> as a pluginRepository ? 
>>>>>>
>>>>>> Where do you deploy the latest gwt-maven snapshot to sonatype or 
>>>>>> codehaus ? 
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Thursday, October 16, 2014 11:38:27 AM UTC+2, Thomas Broyer wrote:
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Oct 16, 2014 at 11:10 AM, Drew Spencer <[email protected]> 
>>>>>>> wrote:
>>>>>>>
>>>>>>>> I think I'm getting two errors relating to the bugs in the POM that 
>>>>>>>> Thomas mentions above:
>>>>>>>>
>>>>>>>> [ERROR] Failed to execute goal 
>>>>>>>> org.codehaus.mojo:gwt-maven-plugin:2.7.0-SNAPSHOT:compile 
>>>>>>>> (default-cli) on project UsavAppV7: Failed to resolve artifact: Some 
>>>>>>>> problems were encountered while processing the POMs:
>>>>>>>> [ERROR] [ERROR] Non-resolvable import POM: Failure to find 
>>>>>>>> com.google.web.bindery:requestfactory:pom:2.7.0-SNAPSHOT in 
>>>>>>>> https://oss.sonatype.org/content/repositories/snapshots was cached 
>>>>>>>> in the local repository, resolution will not be reattempted until the 
>>>>>>>> update interval of sonatype-nexus-snapshots has elapsed or updates are 
>>>>>>>> forced @ com.google.gwt:gwt:2.7.0-SNAPSHOT, 
>>>>>>>> C:\Users\Drew\.m2\repository\com\google\gwt\gwt\2.7.0-
>>>>>>>> SNAPSHOT\gwt-2.7.0-SNAPSHOT.pom, line 50, column 25
>>>>>>>> [ERROR] [ERROR] Non-resolvable import POM: Could not find artifact 
>>>>>>>> org.ow2.asm:asm-parent:pom:5.0.3 @ com.google.gwt:gwt:2.7.0-SNAPSHOT, 
>>>>>>>> C:\Users\Drew\.m2\repository\com\google\gwt\gwt\2.7.0-
>>>>>>>> SNAPSHOT\gwt-2.7.0-SNAPSHOT.pom, line 74, column 25
>>>>>>>>
>>>>>>>> I have tried adding gwt-dev, gwt-codeserver, and the asm dependency 
>>>>>>>> but still getting it. Also tried forcing an update of 
>>>>>>>> snapshots/releases 
>>>>>>>> but no change.
>>>>>>>>
>>>>>>>> I'm still a bit green when it comes to maven.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Which version of Maven are you using? Also, have you configured the 
>>>>>>> google-snapshots both as a repository *and* pluginRepository? (I 
>>>>>>> think this is needed for the plugin to resolve its dependencies)
>>>>>>>
>>>>>>> I was fighting yesterday with a discrepancy between Maven 3.0.5 and 
>>>>>>> 3.1 / 3.2 with the maven-invoker-plugin (used to run tests of the 
>>>>>>> gwt-maven-plugin): things passed with 3.1 (on BuildHive) and 3.2 (on 
>>>>>>> Travis-CI) but failed on my machine (3.0.5). Trying with 3.2.3 on my 
>>>>>>> machine, things worked. The error was exactly the same wrt 
>>>>>>> com.google.web.bindery:requestfactory.
>>>>>>>
>>>>>>> The error about ASM is strange though, it's in Central so it should 
>>>>>>> Just Work™, unless you have some repository/mirror configuration 
>>>>>>> getting in 
>>>>>>> the way?
>>>>>>>
>>>>>>>
>>>>>>> -- 
>>>>>>> Thomas Broyer
>>>>>>> /tɔ.ma.bʁwa.je/ <http://xn--nna.ma.xn--bwa-xxb.je/> 
>>>>>>>
>>>>>>  -- 
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>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> -- 
>>>>> Thomas Broyer
>>>>> /tɔ.ma.bʁwa.je/ <http://xn--nna.ma.xn--bwa-xxb.je/> 
>>>>>
>>>>> -- 
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>>>>>
>>>>
>>>>  -- 
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>>>>
>>>
>>>
>>>
>>> -- 
>>> Thomas Broyer
>>> /tɔ.ma.bʁwa.je/ <http://xn--nna.ma.xn--bwa-xxb.je/> 
>>>
>>> -- 
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>>>
>>
>>

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