| | help: try dereferencing: `*rro`
| in this macro invocation
|
- = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
+ = note: this error originates in the macro `mem_discriminant_but_in_a_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
error: calling `mem::discriminant` on non-enum type `&&&&&std::option::Option<i32>`
--> $DIR/mem_discriminant.rs:34:5