Typo in https://doc.rust-lang.org/rustdoc/documentation-tests.html#attributes

[pavelrappo]

edition2018 tells rustdoc that the code sample should be compiled the 2018 edition of Rust.

That doesn't look right. I suppose one of with, on, or using is missing.

[pavelrappo]

Also,

Using thses options looks like this:

https://doc.rust-lang.org/rustdoc/unstable-features.html#--runtool---runtool-arg-program-to-run-tests-with-args-to-pass-to-it