mirror of https://github.com/rust-lang/rust
141 lines
6.2 KiB
Plaintext
141 lines
6.2 KiB
Plaintext
error[E0277]: `impl Sized` doesn't implement `Debug`
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--> $DIR/bound-suggestions.rs:9:22
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LL | println!("{:?}", t);
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| ^ `impl Sized` cannot be formatted using `{:?}` because it doesn't implement `Debug`
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= note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider further restricting this bound
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LL | fn test_impl(t: impl Sized + std::fmt::Debug) {
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| +++++++++++++++++
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error[E0277]: `T` doesn't implement `Debug`
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--> $DIR/bound-suggestions.rs:15:22
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LL | println!("{:?}", t);
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| ^ `T` cannot be formatted using `{:?}` because it doesn't implement `Debug`
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= note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider restricting type parameter `T`
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LL | fn test_no_bounds<T: std::fmt::Debug>(t: T) {
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| +++++++++++++++++
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error[E0277]: `T` doesn't implement `Debug`
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--> $DIR/bound-suggestions.rs:21:22
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LL | println!("{:?}", t);
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| ^ `T` cannot be formatted using `{:?}` because it doesn't implement `Debug`
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= note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider further restricting this bound
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LL | fn test_one_bound<T: Sized + std::fmt::Debug>(t: T) {
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| +++++++++++++++++
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error[E0277]: `Y` doesn't implement `Debug`
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--> $DIR/bound-suggestions.rs:27:30
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LL | println!("{:?} {:?}", x, y);
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| ^ `Y` cannot be formatted using `{:?}` because it doesn't implement `Debug`
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= note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider further restricting type parameter `Y`
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LL | fn test_no_bounds_where<X, Y>(x: X, y: Y) where X: std::fmt::Debug, Y: std::fmt::Debug {
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| ~~~~~~~~~~~~~~~~~~~~
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error[E0277]: `X` doesn't implement `Debug`
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--> $DIR/bound-suggestions.rs:33:22
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LL | println!("{:?}", x);
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| ^ `X` cannot be formatted using `{:?}` because it doesn't implement `Debug`
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= note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider further restricting this bound
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LL | fn test_one_bound_where<X>(x: X) where X: Sized + std::fmt::Debug {
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| +++++++++++++++++
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error[E0277]: `X` doesn't implement `Debug`
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--> $DIR/bound-suggestions.rs:39:22
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LL | println!("{:?}", x);
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| ^ `X` cannot be formatted using `{:?}` because it doesn't implement `Debug`
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= note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider further restricting this bound
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LL | fn test_many_bounds_where<X>(x: X) where X: Sized + std::fmt::Debug, X: Sized {
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| +++++++++++++++++
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error[E0277]: the size for values of type `Self` cannot be known at compilation time
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--> $DIR/bound-suggestions.rs:45:46
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LL | const SIZE: usize = core::mem::size_of::<Self>();
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| ^^^^ doesn't have a size known at compile-time
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note: required by an implicit `Sized` bound in `std::mem::size_of`
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--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
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help: consider further restricting `Self`
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LL | trait Foo<T>: Sized {
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| +++++++
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error[E0277]: the size for values of type `Self` cannot be known at compilation time
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--> $DIR/bound-suggestions.rs:51:46
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LL | const SIZE: usize = core::mem::size_of::<Self>();
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| ^^^^ doesn't have a size known at compile-time
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note: required by an implicit `Sized` bound in `std::mem::size_of`
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--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
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help: consider further restricting `Self`
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LL | trait Bar: std::fmt::Display + Sized {
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| +++++++
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error[E0277]: the size for values of type `Self` cannot be known at compilation time
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--> $DIR/bound-suggestions.rs:57:46
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LL | const SIZE: usize = core::mem::size_of::<Self>();
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| ^^^^ doesn't have a size known at compile-time
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note: required by an implicit `Sized` bound in `std::mem::size_of`
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--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
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help: consider further restricting `Self`
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LL | trait Baz: Sized where Self: std::fmt::Display {
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| +++++++
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error[E0277]: the size for values of type `Self` cannot be known at compilation time
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--> $DIR/bound-suggestions.rs:63:46
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LL | const SIZE: usize = core::mem::size_of::<Self>();
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| ^^^^ doesn't have a size known at compile-time
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note: required by an implicit `Sized` bound in `std::mem::size_of`
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--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
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help: consider further restricting `Self`
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LL | trait Qux<T>: Sized where Self: std::fmt::Display {
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| +++++++
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error[E0277]: the size for values of type `Self` cannot be known at compilation time
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--> $DIR/bound-suggestions.rs:69:46
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LL | const SIZE: usize = core::mem::size_of::<Self>();
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| ^^^^ doesn't have a size known at compile-time
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note: required by an implicit `Sized` bound in `std::mem::size_of`
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--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
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help: consider further restricting `Self`
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LL | trait Bat<T>: std::fmt::Display + Sized {
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| +++++++
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error: aborting due to 11 previous errors
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For more information about this error, try `rustc --explain E0277`.
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