The argument to the `asm` macro is not well-formed.

Erroneous code example:

```compile_fail,E0660
asm!("nop" "nop");
```

Considering that this would be a long explanation, we instead recommend you
take a look at the [`asm`] chapter of the Unstable book:

[asm]: https://doc.rust-lang.org/stable/unstable-book/library-features/asm.html
