Add identifying information to failure message for all local spawn execution errors.

PiperOrigin-RevId: 334600311
diff --git a/src/main/java/com/google/devtools/build/lib/remote/RemoteSpawnCache.java b/src/main/java/com/google/devtools/build/lib/remote/RemoteSpawnCache.java
index 4c9077a..e72c04e 100644
--- a/src/main/java/com/google/devtools/build/lib/remote/RemoteSpawnCache.java
+++ b/src/main/java/com/google/devtools/build/lib/remote/RemoteSpawnCache.java
@@ -209,10 +209,11 @@
           SpawnResult spawnResult =
               createSpawnResult(
                   result.getExitCode(),
-                  /* cacheHit= */ true,
+                  /*cacheHit=*/ true,
                   "remote",
                   inMemoryOutput,
-                  spawnMetrics.build());
+                  spawnMetrics.build(),
+                  spawn.getMnemonic());
           return SpawnCache.success(spawnResult);
         }
       } catch (CacheNotFoundException e) {