experiment: enable fingerprint verification unconditionally

Author: michaelwoerister

compiler/rustc_query_system/src/query/plumbing.rs

@@ -551,12 +551,7 @@ where
     };
 
     if let Some(result) = result {
-        // If `-Zincremental-verify-ich` is specified, re-hash results from
-        // the cache and make sure that they have the expected fingerprint.
-        if unlikely!(tcx.dep_context().sess().opts.debugging_opts.incremental_verify_ich) {
-            incremental_verify_ich(*tcx.dep_context(), &result, dep_node, query);
-        }
-
+        incremental_verify_ich(*tcx.dep_context(), &result, dep_node, query);
         result
     } else {
         // We could not load a result from the on-disk cache, so