diff --git a/test_crate.sh b/test_crate.sh
index 45162cc..06b40d3 100755
--- a/test_crate.sh
+++ b/test_crate.sh
@@ -9,7 +9,7 @@ echo "Testing $CRATE +$TOOLCHAIN"
 cd $CRATE
 
 function build() {
-    (cd "$CRATE" && cargo "+$TOOLCHAIN" rustc --features=full --verbose -- -Zincremental-verify-ich -Zquery-dep-graph -Zdump-dep-graph)
+    (cd "$CRATE" && perf record cargo "+$TOOLCHAIN" rustc --features=full --verbose -- -Zincremental-verify-ich -Zquery-dep-graph -Zdump-dep-graph --emit=metadata)
 }
 
 for patch in ./patches/* ; do
@@ -21,12 +21,14 @@ for patch in ./patches/* ; do
     (cd "$CRATE" && git apply "../$patch")
     
     export RUST_DEP_GRAPH="../dep_graph1"
+    export RUSTC_RED_NODES_PATH="../red1"
     build
     
     (cd "$CRATE" && git checkout HEAD .)
     
     echo "Reverting $patch..."
     
+    export RUSTC_RED_NODES_PATH="../red2"
     export RUST_DEP_GRAPH="../dep_graph2"
     build
 done
\ No newline at end of file