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error[E0277]: the trait bound `str: UpperHex` is not satisfied
--> $DIR/ifmt-unimpl.rs:2:21
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LL | format!("{:X}", "3");
| ^^^ the trait `UpperHex` is not implemented for `str`
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= help: the following other types implement trait `UpperHex`:
&T
&mut T
NonZeroI128
NonZeroI16
NonZeroI32
NonZeroI64
NonZeroI8
NonZeroIsize
and 21 others
= note: required for `&str` to implement `UpperHex`
note: required by a bound in `ArgumentV1::<'a>::new_upper_hex`
--> $SRC_DIR/core/src/fmt/mod.rs:LL:COL
= note: this error originates in the macro `$crate::__export::format_args` which comes from the expansion of the macro `arg_new` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
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