Inner attributes cannot be specified in include! files

[Marwes]

Getting the following error when attempting to use an inner attribute in a file that gets called by include!.

error: an inner attribute is not permitted in this context
 --> test.rs:1:3
  |
1 | #![cfg_attr(rustfmt, rustfmt_skip)]
  |   ^
  |
  = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files. Outer attributes, like `#[test]`, annotate the item following them.

Example

test.rs

#![cfg_attr(rustfmt, rustfmt_skip)]

fn main() {
}

main.rs

include!("test.rs");

$ rustc --version --verbose
rustc 1.25.0-nightly (5965b7901 2018-01-19)
binary: rustc
commit-hash: 5965b790142eff7a8546e947914e7a8e00c61575
commit-date: 2018-01-19
host: x86_64-pc-windows-msvc
release: 1.25.0-nightly
LLVM version: 4.0

[TimNN]

Duplicate of #18810, which was closed in favour of rust-lang/rfcs#752. In some situation you can work around this by having a #[path="test.rs"] mod foo;` (if I remember the syntax correctly).