Added debug info

compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/NewResolveOldInference.kt

@@ -224,10 +224,13 @@ class NewResolveOldInference(
         }
 
         override fun contextForInvoke(variable: Candidate, useExplicitReceiver: Boolean): Pair<ReceiverValue, TowerContext<Candidate>> {
-            assert(variable.resolvedCall.status.isSuccess)
+            assert(variable.resolvedCall.status.possibleTransformToSuccess()) {
+                "Incorrect status: ${variable.resolvedCall.status} for variable call: ${variable.resolvedCall} " +
+                "and descriptor: ${variable.resolvedCall.candidateDescriptor}"
+            }
             val calleeExpression = variable.resolvedCall.call.calleeExpression
             val variableDescriptor = variable.resolvedCall.resultingDescriptor
-            assert(variable.resolvedCall.status.isSuccess && calleeExpression != null && variableDescriptor is VariableDescriptor) {
+            assert(variable.resolvedCall.status.possibleTransformToSuccess() && calleeExpression != null && variableDescriptor is VariableDescriptor) {
                 "Unexpected varialbe candidate: $variable"
             }
             val variableReceiver = ExpressionReceiver.create(calleeExpression!!,

compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/ScopeTower.kt

@@ -67,7 +67,7 @@ interface CandidateWithBoundDispatchReceiver<out D : CallableDescriptor> {
     val dispatchReceiver: ReceiverValue?
 }
 
-class ResolutionCandidateStatus(val diagnostics: List<ResolutionDiagnostic>) {
+data class ResolutionCandidateStatus(val diagnostics: List<ResolutionDiagnostic>) {
     val resultingApplicability: ResolutionCandidateApplicability = diagnostics.asSequence().map { it.candidateLevel }.max()
                                                                    ?: ResolutionCandidateApplicability.RESOLVED
 }