error[E0080]: evaluation of `<() as Tr>::B` failed --> $DIR/defaults-not-assumed-fail.rs:8:19 | LL | const B: u8 = Self::A + 1; | ^^^^^^^^^^^ attempt to compute `u8::MAX + 1_u8`, which would overflow note: erroneous constant encountered --> $DIR/defaults-not-assumed-fail.rs:33:16 | LL | assert_eq!(<() as Tr>::B, 0); // causes the error above | ^^^^^^^^^^^^^ note: erroneous constant encountered --> $DIR/defaults-not-assumed-fail.rs:33:5 | LL | assert_eq!(<() as Tr>::B, 0); // causes the error above | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: this note originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info) note: erroneous constant encountered --> $DIR/defaults-not-assumed-fail.rs:33:5 | LL | assert_eq!(<() as Tr>::B, 0); // causes the error above | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` = note: this note originates in the macro `assert_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 E0080`.