error[E0277]: the trait bound `NoToSocketAddrs: ToSocketAddrs` is not satisfied --> $DIR/issue-39029.rs:16:37 | LL | let _errors = TcpListener::bind(&bad); | ----------------- ^^^^ | | | | | the trait `ToSocketAddrs` is not implemented for `NoToSocketAddrs` | | help: consider dereferencing here: `&*bad` | required by a bound introduced by this call | = note: required because of the requirements on the impl of `ToSocketAddrs` for `&NoToSocketAddrs` note: required by a bound in `TcpListener::bind` --> $SRC_DIR/std/src/net/tcp.rs:LL:COL | LL | pub fn bind(addr: A) -> io::Result { | ^^^^^^^^^^^^^ required by this bound in `TcpListener::bind` error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.