Fix issue #4980

- When an applicability test fails (ie: during LUB) we don't want that
   to bubble up and fail the process, simply to discard the candidate
   and move forward. If no matching candidate is found, the inference
   will fail anyway.

pmd-java/src/main/java/net/sourceforge/pmd/lang/java/types/internal/infer/Infer.java

@@ -577,7 +577,12 @@ public final class Infer {
                 // we only test it can reduce, we don't commit inferred types at this stage
                 InferenceContext ctxCopy = infCtx.copy();
                 LOG.applicabilityTest(ctxCopy, m);
-                ctxCopy.solve(/*onlyBoundedVars:*/isPreJava8());
+                try {
+                    ctxCopy.solve(/*onlyBoundedVars:*/isPreJava8());
+                } catch (ResolutionFailedException | IllegalArgumentException ignored) {
+                    // applicability test failed for this candidate, but continue with others
+                    return null;
+                }
 
                 // if unchecked conversion was needed, update the site for invocation pass
                 if (ctxCopy.needsUncheckedConversion()) {