Issues with GWT 2.8 snapshot

I started getting the following errors with Gradle builds and the latest GWT 2.8.-SNAPSHOT - any idea ?

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/root/.gradle/caches/modules-2/files-2.1/com.google.gwt/gwt-user/2.8.0-SNAPSHOT/c7913836bdcf2423552e6355ad17fbd271ac5207/gwt-user-2.8.0-SNAPSHOT.jar(com/google/gwt/user/client/ui/Widget.java):28: error: cannot access Event

import com.google.gwt.user.client.Event;

                                 ^

  bad source file: /root/.gradle/caches/modules-2/files-2.1/com.google.gwt/gwt-user/2.8.0-SNAPSHOT/c7913836bdcf2423552e6355ad17fbd271ac5207/gwt-user-2.8.0-SNAPSHOT.jar(com/google/gwt/user/client/Event.java)

    file does not contain class com.google.gwt.user.client.Event

    Please remove or make sure it appears in the correct subdirectory of the sourcepath.

/root/.gradle/caches/modules-2/files-2.1/com.google.gwt/gwt-user/2.8.0-SNAPSHOT/c7913836bdcf2423552e6355ad17fbd271ac5207/gwt-user-2.8.0-SNAPSHOT.jar(com/google/gwt/event/shared/HandlerRegistration.java):23: error: cannot access HandlerRegistration

public interface HandlerRegistration extends com.google.web.bindery.event.shared.HandlerRegistration {

                                                                                ^

  bad source file: /root/.gradle/caches/modules-2/files-2.1/com.google.gwt/gwt-user/2.8.0-SNAPSHOT/c7913836bdcf2423552e6355ad17fbd271ac5207/gwt-user-2.8.0-SNAPSHOT.jar(com/google/web/bindery/event/shared/HandlerRegistration.java)

    file does not contain class com.google.web.bindery.event.shared.HandlerRegistration

    Please remove or make sure it appears in the correct subdirectory of the sourcepath.

2 errors

:gwt-errai:javadoc FAILED

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