error[E0277]: `NoDisplay` doesn't implement `std::fmt::Display` --> tests/inline_integrations/no_display_impl-fail.rs:7:23 | 7 | background: ${expr}; | ^^^^ `NoDisplay` cannot be formatted with the default formatter | = help: the trait `std::fmt::Display` is not implemented for `NoDisplay` = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead = note: required for the cast from `NoDisplay` to the object type `dyn std::fmt::Display`