Xcode 13 unable to auto-upload dSYM Firebase scripts

Question

Our app has been using the upload-symbols script in a build phase to auto-upload dSYM files to Crashlytics for a while now.

However, since updating to Xcode 13, all of our archives have been failing due to that script -

[...] /Script-EF456CDC25C0F14E00D10098.sh: line 5: 47180 Killed: 9               "${PODS_ROOT}/FirebaseCrashlytics/upload-symbols" -gsp <path-to-plist> -p ios "${DWARF_DSYM_FOLDER_PATH}/${DWARF_DSYM_FILE_NAME}"

Does anyone have any ideas on what's wrong?

Couple details:

• comes last in build phases
• has both ${DWARF_DSYM_FOLDER_PATH}/${DWARF_DSYM_FILE_NAME}/Contents/Resources/DWARF/${TARGET_NAME} and $(SRCROOT)/$(BUILT_PRODUCTS_DIR)/$(INFOPLIST_PATH) listed under input files
• all other build phase parameters are default