https://dev-doc.rust-lang.org/stable/core/str/struct.Utf8Error.html
Utf8Error in core::str - Rust
Errors which can occur when attempting to interpret a sequence of `u8` as a string.
corestrrust
https://doc.rust-lang.org/nightly/alloc/str/struct.Utf8Error.html
Utf8Error in alloc::str - Rust
Errors which can occur when attempting to interpret a sequence of `u8` as a string.
allocstrrust