Caused by:
  failed to parse the `edition` key

Caused by:
  this version of Cargo is older than the `2021` edition, and only supports `2015` and `2018` editions.
make: *** [plugins/Makefile:194: target/debug/cln-grpc] Error 101
rm external/arm-linux-gnueabihf/libwally-core-build/src/secp256k1/libsecp256k1.la