error[E0080]: index out of bounds: the length is 1 but the index is 1
  --> $DIR/issue-44578.rs:14:24
   |
LL |     const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize];
   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `<Bar<u16, u8> as Foo>::AMT` failed here

note: erroneous constant encountered
  --> $DIR/issue-44578.rs:26:20
   |
LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^

note: erroneous constant encountered
  --> $DIR/issue-44578.rs:26:20
   |
LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

note: erroneous constant encountered
  --> $DIR/issue-44578.rs:26:20
   |
LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

note: erroneous constant encountered
  --> $DIR/issue-44578.rs:26:20
   |
LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
   = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0080`.