Rust error E0013: #### Note: this error code is no longer emitted by the compiler

The compiler team's explanation

Note: this error code is no longer emitted by the compiler

Static and const variables can refer to other const variables. But a const variable cannot refer to a static variable.

Erroneous code example:

static X: i32 = 42;
const Y: i32 = X;

In this example, Y cannot refer to X. To fix this, the value can be extracted as a const and then used:

const A: i32 = 42;
static X: i32 = A;
const Y: i32 = A;

From rustc --explain E0013 (1.99.0), part of the Rust project, MIT or Apache-2.0. Official page.