error: cannot declare a non-inline module inside a block unless it has a path attribute --> $DIR/macro-expanded-mod.rs:5:9 | LL | mod $i; | ^^^^^^^ ... LL | mod_decl!(foo); | -------------- in this macro invocation | = note: this error originates in the macro `mod_decl` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to 1 previous error