Same, I got plenty of crashes in my app ( ScannerLens ). I have tried to make libswift_Concurrency.tbd optional but it doesn't work! I do not use any concurrency api at all! Finally I remove the libswift_Concurrency.tbd file after build finished, and it works. you can try like:
Edit Scheme... -> Build -> Post-actions -> Click '+' to add New Run Script
rm "${BUILT_PRODUCTS_DIR}/${FRAMEWORKS_FOLDER_PATH}/libswift_Concurrency.dylib" || echo "libswift_Concurrency.dylib not exists"
And then wait a new xcode version to fix this issue.