Doesn't work on big-endian

[pkubaj]

I'm compiling on FreeBSD 13.0 on powerpc64 (big-endian). I'm filing this issue since you yourself ask at https://github.com/zkcrypto/merlin/blob/main/src/lib.rs#L10

[Yneth]

 error: 
       This crate doesn't support big-endian targets, since I didn't
       have one to test correctness on.  If you're seeing this message,
       please file an issue!
  --> /cargo/registry/src/index.crates.io-6f17d22bba15001f/merlin-3.0.0/src/lib.rs:10:1
   |
10 | / compile_error!(
11 | |     r#"
12 | | This crate doesn't support big-endian targets, since I didn't
13 | | have one to test correctness on.  If you're seeing this message,
14 | | please file an issue!
15 | | "#
16 | | );
   | |_^
error: could not compile `merlin` (lib) due to previous error
Error: warning: build failed, waiting for other jobs to finish...
Error: The process '/home/runner/.cargo/bin/cross' failed with exit code 101

during complication of mips-unknown-linux-musl and mipsel-unknown-linux-musl