lldb can not print Option<i32>

I tried this code:

{
    let x = Some(4);
    println!("Hello, world! {:?}", x);
}

Trying to print the value of x gives:

(core::option::Option<i32>) $0 = {}

This is with:

lldb-1200.0.41
Apple Swift version 5.3.1 (swiftlang-1200.0.41 clang-1200.0.32.8)

and

rustc 1.49.0-nightly (adef9da30 2020-10-13)