Enable CollectionIncompatibleType

Also suppress two false positives.

blobstore/src/test/java/org/jclouds/blobstore/integration/internal/BaseServiceIntegrationTest.java

@@ -34,6 +34,7 @@ import com.google.common.collect.Iterables;
 
 public class BaseServiceIntegrationTest extends BaseBlobStoreIntegrationTest {
 
+   @SuppressWarnings("CollectionIncompatibleType")
    @Test(groups = { "integration", "live" })
    void containerDoesntExist() {
       Set<? extends StorageMetadata> list = view.getBlobStore().list();

core/src/main/java/org/jclouds/json/internal/NamingStrategies.java

@@ -271,6 +271,7 @@ public class NamingStrategies {
          return tryFind(constructors(token), hasMarker).orNull();
       }
 
+      @SuppressWarnings("CollectionIncompatibleType")
       @VisibleForTesting
       <T> String translateName(Invokable<T, T> c, int index) {
          String name = null;

project/pom.xml

@@ -748,6 +748,7 @@
               <compilerArg>-Xlint:-serial</compilerArg>
               <compilerArg>-Xlint:-unchecked</compilerArg>
               <compilerArg>-Xep:ClassCanBeStatic:ERROR</compilerArg>
+              <compilerArg>-Xep:CollectionIncompatibleType:ERROR</compilerArg>
               <compilerArg>-Xep:EqualsHashCode:ERROR</compilerArg>
               <compilerArg>-Xep:GuiceAssistedInjectScoping:OFF</compilerArg>
               <compilerArg>-Xep:LongLiteralLowerCaseSuffix:OFF</compilerArg>