add backtrace

Author: makspll

.github/workflows/bevy_mod_scripting.yml

@@ -18,6 +18,7 @@ env:
   GH_TOKEN: ${{ github.token }}
   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   BENCHER_API_TOKEN: ${{ secrets.BENCHER_API_TOKEN }}
+  RUST_BACKTRACE=1
 
 concurrency:
   # Use github.run_id on main branch