Not clearing incremental cache on compilation error.

jps-plugin/src/org/jetbrains/jet/jps/build/KotlinBuilder.kt

@@ -196,10 +196,13 @@ public class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR
             }
         }
 
+        val compilationErrors = Utils.ERRORS_DETECTED_KEY[context, false]
+
         for ((target, cache) in incrementalCaches) {
             cache.clearCacheForRemovedFiles(
                     KotlinSourceFileCollector.getRemovedKotlinFiles(dirtyFilesHolder, target),
-                    target.getOutputDir()!!
+                    target.getOutputDir()!!,
+                    !compilationErrors
             )
         }
 

jps-plugin/src/org/jetbrains/jet/jps/incremental/IncrementalCacheImpl.kt

@@ -96,12 +96,14 @@ public class IncrementalCacheImpl(val baseDir: File): StorageOwner, IncrementalC
         return DO_NOTHING
     }
 
-    public fun clearCacheForRemovedFiles(removedSourceFiles: Collection<String>, outDirectory: File) {
+    public fun clearCacheForRemovedFiles(removedSourceFiles: Collection<String>, outDirectory: File, compilationSuccessful: Boolean) {
         removedSourceFiles.forEach { packagePartMap.remove(it) }
 
-        inlineFunctionsMap.clearOutdated(outDirectory)
-        constantsMap.clearOutdated(outDirectory)
-        protoMap.clearOutdated(outDirectory)
+        if (compilationSuccessful) {
+            inlineFunctionsMap.clearOutdated(outDirectory)
+            constantsMap.clearOutdated(outDirectory)
+            protoMap.clearOutdated(outDirectory)
+        }
     }
 
     public override fun getRemovedPackageParts(compiledSourceFilesToFqName: Map<File, String>): Collection<String> {