error[E0277]: the trait bound `f64: Eq` is not satisfied --> $DIR/issue-103157.rs:6:11 | LL | #[derive(PartialEq, Eq)] | -- in this derive macro expansion ... LL | Float(Option), | ^^^^^^^^^^^ the trait `Eq` is not implemented for `f64` | = help: the following other types implement trait `Eq`: i128 i16 i32 i64 i8 isize u128 u16 and 4 others = note: required for `Option` to implement `Eq` note: required by a bound in `AssertParamIsEq` --> $SRC_DIR/core/src/cmp.rs:LL:COL = note: this error originates in the derive macro `Eq` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.