fix

ci/aarch64-linux-release.sh

@@ -110,4 +110,4 @@ ninja install
 # After all correctness checking, compare performance against the merge-base.
 cd ..
 sh ci/measure-perf-delta.sh "$ZIG" "$TARGET" "$MCPU" "$PREFIX" || \
-  echo "Error occurred measuring the performance delta of this pull request." > build-new/perf.txt
+  echo "$TARGET: Error occurred measuring the performance delta of this pull request." > build-new/perf.txt

ci/measure-perf-delta.sh

@@ -9,7 +9,7 @@ fi
 
 ZIG="$1"
 TARGET="$2"
-MPCU="$3"
+MCPU="$3"
 PREFIX="$4"
 
 git checkout "$GITHUB_BASE_REF"
@@ -37,7 +37,13 @@ ninja install
 
 cd ..
 
-poop \
+OUT="build-new/perf.txt"
+echo "$TARGET perf delta against $GITHUB_BASE_REF:" >"$OUT"
+echo '```' >>"$OUT"
+
+$HOME/local/bin/poop \
   "build-base/stage3/bin/zig build-exe test/standalone/hello_world/hello.zig" \
   "build-new/stage3/bin/zig build-exe test/standalone/hello_world/hello.zig" \
-  > build-new/perf.txt
+  >> build-new/perf.txt
+
+echo '```' >>"$OUT"