error[E0599]: `test_no_bound_on_named_fmt::Error<DebugOnly>` doesn't implement `std::fmt::Display`
--> tests/test_generics.rs:173:22
|
168 | struct Error<T> {
| --------------- method `to_string` not found for this struct because it doesn't satisfy `_: Display` or `_: ToString`
...
173 | assert_eq!(error.to_string(), "...");
| ^^^^^^^^^ `test_no_bound_on_named_fmt::Error<DebugOnly>` cannot be formatted with the default formatter
|
= note: the following trait bounds were not satisfied:
`test_no_bound_on_named_fmt::Error<DebugOnly>: std::fmt::Display`
which is required by `test_no_bound_on_named_fmt::Error<DebugOnly>: ToString`
= note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
note: the trait `std::fmt::Display` must be implemented
--> $RUSTUP_HOME/toolchains/nightly-aarch64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/fmt/mod.rs:727:1
|
727 | pub trait Display {
| ^^^^^^^^^^^^^^^^^
= help: items from traits can only be used if the trait is implemented and in scope
= note: the following trait defines an item `to_string`, perhaps you need to implement it:
candidate #1: `ToString`
warning: variables can be used directly in the `format!` string
--> tests/test_generics.rs:93:5
|
93 | assert_eq!(format!("{}", instance), "display only DebugOnly");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
help: change this to
|
93 - assert_eq!(format!("{}", instance), "display only DebugOnly");
93 + assert_eq!(format!("{instance}"), "display only DebugOnly");
|
warning: variables can be used directly in the `format!` string
--> tests/test_generics.rs:96:5
|
96 | assert_eq!(format!("{}", instance), "display only");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
help: change this to
|
96 - assert_eq!(format!("{}", instance), "display only");
96 + assert_eq!(format!("{instance}"), "display only");
|
warning: variables can be used directly in the `format!` string
--> tests/test_generics.rs:99:5
|
99 | assert_eq!(format!("{}", instance), "DebugOnly");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
help: change this to
|
99 - assert_eq!(format!("{}", instance), "DebugOnly");
99 + assert_eq!(format!("{instance}"), "DebugOnly");
|
warning: `thiserror` (test "test_generics") generated 3 warnings (run `cargo clippy --fix --test "test_generics"` to apply 3 suggestions)
warning: variables can be used directly in the `format!` string
--> tests/test_display.rs:129:20
|
129 | Some(n) => format!("error occurred with {}", n),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
help: change this to
|
129 - Some(n) => format!("error occurred with {}", n),
129 + Some(n) => format!("error occurred with {n}"),
|
warning: variables can be used directly in the `format!` string
--> tests/test_display.rs:153:32
|
153 | Some(n) => write!(formatter, "error occurred with {}", n),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args
help: change this to
|
153 - Some(n) => write!(formatter, "error occurred with {}", n),
153 + Some(n) => write!(formatter, "error occurred with {n}"),
|
