error: any use of this value will cause an error --> $DIR/const-external-macro-const-err.rs:12:5 | LL | static_assert!(2 + 2 == 5); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 1 | = note: `#[deny(const_err)]` on by default = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 = note: this error originates in the macro `static_assert` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to previous error Future incompatibility report: Future breakage diagnostic: error: any use of this value will cause an error --> $DIR/const-external-macro-const-err.rs:12:5 | LL | static_assert!(2 + 2 == 5); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 1 | = note: `#[deny(const_err)]` on by default = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 = note: this error originates in the macro `static_assert` (in Nightly builds, run with -Z macro-backtrace for more info)