error: this operation will panic at runtime
  --> $DIR/ice-5497.rs:9:22
   |
LL |     const OOB: i32 = [1][1] + T::OOB;
   |                      ^^^^^^ index out of bounds: the length is 1 but the index is 1
   |
   = note: `#[deny(unconditional_panic)]` on by default

error: aborting due to previous error