error: an inner attribute is not permitted following an outer attribute
  --> $DIR/inner-attr.rs:3:1
   |
LL | #[feature(lang_items)]
   | ---------------------- previous outer attribute
LL |
LL | #![recursion_limit="100"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^ not permitted following an outer attribute
LL | fn main() {}
   | ------------ the inner attribute doesn't annotate this function
   |
   = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
help: to annotate the function, change the attribute from inner to outer style
   |
LL - #![recursion_limit="100"]
LL + #[recursion_limit="100"]
   |

error: aborting due to 1 previous error