I'm trying to compile const_units using nightly but I keep getting this error:

error[E0015]: cannot call non-const fn <Self as PartialEq<Rhs>>::eq in constant functions
--> /home/elpiel/.cargo/registry/src/index.crates.io-6f17d22bba15001f/const_ops-0.2.2/src/lib.rs:117:15
|
117 | !self.eq(other)
| ^^^^^^^^^
|
= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
= help: add #![feature(effects)] to the crate attributes to enable

For more information about this error, try rustc --explain E0015.
error: could not compile const_ops (lib) due to 1 previous error

I tried adding #![feature(effects)] to const_units but didn't work. Maybe it should be added to this crate instead?