1 error: using `to_string` in `fmt::Display` implementation might lead to infinite recursion
2 --> $DIR/to_string_in_display.rs:25:25
4 LL | write!(f, "{}", self.to_string())
7 = note: `-D clippy::to-string-in-display` implied by `-D warnings`
9 error: unnecessary use of `to_string`
10 --> $DIR/to_string_in_display.rs:55:50
12 LL | Self::E(string) => write!(f, "E {}", string.to_string()),
15 = note: `-D clippy::unnecessary-to-owned` implied by `-D warnings`
16 = note: this error originates in the macro `$crate::format_args` (in Nightly builds, run with -Z macro-backtrace for more info)
18 error: aborting due to 2 previous errors