error[E0658]: referencing statics in constants is unstable
  --> $DIR/issue-52060.rs:4:26
   |
LL | static B: [u32; 1] = [0; A.len()];
   |                          ^
   |
   = note: see issue #119618 <https://github.com/rust-lang/rust/issues/119618> for more information
   = help: add `#![feature(const_refs_to_static)]` to the crate attributes to enable
   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
   = note: `static` and `const` variables can refer to other `const` variables. A `const` variable, however, cannot refer to a `static` variable.
   = help: to fix this, the value can be extracted to a `const` and then used.

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0658`.