#[cfg_attr(debug_assertions, derive(EnumKind), enum_kind(Kind, repr(u32)))]

#[macro_use]
extern crate enum_kinds;

#[cfg_attr(debug_assertions, derive(EnumKind), enum_kind(ValueId, repr(u32)))]
enum Value {
    A,
    B,
}

proc macro returned error: proc-macro panicked:
#[derive(EnumKind)] requires an associated `enum_kind` attribute to be specified

rustc 1.56.0-nightly (2f662b140 2021-08-29)

cargo check works, it builds correctly both in debug and release profiles.