Mention log file if an error happened before building, too

plugins/python-build/bin/python-build

@@ -128,6 +128,7 @@ build_failed() {
 
     if ! rmdir "${BUILD_PATH}" 2>/dev/null; then
       echo "Inspect or clean up the working tree at ${BUILD_PATH}"
+    fi
 
     if file_is_not_empty "$LOG_PATH"; then
       colorize 33 "Results logged to ${LOG_PATH}"
@@ -135,7 +136,6 @@ build_failed() {
       echo "Last 10 log lines:"
       tail -n 10 "$LOG_PATH"
     fi
-    fi
   } >&3
   exit 1
 }