internal compiler error: no type for local variable

A minimal code example that results in this error message:

static N: int = {
    let n: int = 56;
    n
};

fn main() {}

error: internal compiler error: no type for local variable 10u32
This message reflects a bug in the Rust compiler.
We would appreciate a bug report: http://static.rust-lang.org/doc/master/complem
ent-bugreport.html
test.rs:5      let n: int = 56;
                    ^~~~~~~~~~~

[alexcrichton]

Closed by #14183