I'm trying to use external buid for the project, which consists of java and scala modules (and GWT as well), however this seems to be failing to work well.
For instance, I am getting errors which are not errors but warnings:
Error: scala: /project/SnappingTest.java:469: warning: non-varargs call of varargs method with inexact argument type for last parameter;
Error: scala: cast to java.lang.Object for a non-varargs call and to suppress this warning
also it is not possible to navigate to these "errors" from Messages tab.
Disabling external build mode results in no errors (as expected, because there are no errors!)