Can't run tests for `runtime-attributes`

[Nemo157]

When I try running all the tests via cargo test --all in this workspace I get an error from the runtime-attributes crate:

> cargo test -p runtime-attributes
   Compiling runtime-attributes v0.3.0-alpha.2 (/Users/nemo157/sources/runtime/runtime-attributes)
error[E0659]: `main` is ambiguous (built-in attribute vs any other name)
  |
  = note: `main` could refer to a built-in attribute
note: `main` could also refer to the crate-local procedural macro defined here
 --> runtime-attributes/src/lib.rs:28:1
  |
28| / pub fn main(attr: TokenStream, item: TokenStream) -> TokenStream {
29| |     let rt = if attr.is_empty() {
30| |         syn::parse_str("runtime::native::Native").unwrap()
31| |     } else {
... |
60| |     result.into()
61| | }
  | |_^