Make sure sccache not present doesn't kill the build

alexcrichton · alexcrichton · commit 0843207d1b8e · 2019-05-20T12:55:01.000-07:00
diff --git a/src/ci/run.sh b/src/ci/run.sh
@@ -141,4 +141,4 @@ else
   do_make "$RUST_CHECK_TARGET"
 fi
 
-sccache --show-stats
+sccache --show-stats || true
