warning: target feature `retpoline-external-thunk` cannot be enabled with `-Ctarget-feature`: use `x86-retpoline` target modifier flag instead
   |
   = note: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #116344 <https://github.com/rust-lang/rust/issues/116344>

warning: 1 warning emitted