Error code E0758
A multi-line (doc-)comment is unterminated.
Erroneous code example:
#![allow(unused)] fn main() { /* I am not terminated! }
The same goes for doc comments:
#![allow(unused)] fn main() { /*! I am not terminated! }
You need to end your multi-line comment with */
in order to fix this error:
#![allow(unused)] fn main() { /* I am terminated! */ /*! I am also terminated! */ }