try cargo-hack on Redox. It might work.

Author: asomers

.cirrus.yml

@@ -254,8 +254,6 @@ task:
   name: Redox x86_64
   env:
     TARGET: x86_64-unknown-redox
-    # cargo-hack needs a newer compiler.  # TODO: try enabling NOHACK.
-    NOHACK: 1
     # Redox requires a nightly compiler.
     # If stuff breaks, change nightly to the date at
     # https://gitlab.redox-os.org/redox-os/redox/-/blob/master/rust-toolchain