error[E0283]: type annotations needed --> $DIR/issue-72616.rs:22:37 | LL | if String::from("a") == "a".try_into().unwrap() {} | -- ^^^^^^^^ | | | type must be known at this point | = note: multiple `impl`s satisfying `String: PartialEq<_>` found in the `alloc` crate: - impl PartialEq for String; - impl<'a, 'b> PartialEq<&'a str> for String; - impl<'a, 'b> PartialEq> for String; - impl<'a, 'b> PartialEq for String; help: try using a fully qualified path to specify the expected types | LL | if String::from("a") == <&str as TryInto>::try_into("a").unwrap() {} | +++++++++++++++++++++++++++++++ ~ error[E0283]: type annotations needed --> $DIR/issue-72616.rs:22:37 | LL | if String::from("a") == "a".try_into().unwrap() {} | ^^^^^^^^ | = note: multiple `impl`s satisfying `_: TryFrom<&str>` found in the following crates: `core`, `std`: - impl<> TryFrom<&str> for std::sys_common::net::LookupHost; - impl TryFrom for T where U: Into; = note: required for `&str` to implement `TryInto<_>` help: try using a fully qualified path to specify the expected types | LL | if String::from("a") == <&str as TryInto>::try_into("a").unwrap() {} | +++++++++++++++++++++++++++++++ ~ error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0283`.