Make std::error::Error not inherit from Send
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The Send bound is an unnecessary restriction, and though provided as a convenience, can't be removed by downstream code. The removal of this bound is a [breaking-change] since it removes an implicit Send bound on all `E: Error` and all `Error` trait objects. To migrate, consider if your code actually requires the Send bound and, if so, add it explicitly. Fixes rust-lang#23774
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The Send bound is an unnecessary restriction, and though provided as a convenience, can't be removed by downstream code. The removal of this bound is a [breaking-change] since it removes an implicit Send bound on all `E: Error` and all `Error` trait objects. To migrate, consider if your code actually requires the Send bound and, if so, add it explicitly. Fixes #23774 r? @aturon
matthiaskrgr
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May 15, 2023
…error, r=dtolnay Remove unnecessary Send bound Hi, While working on a [PR on Tokio](tokio-rs/tokio#5666), I took inspiration from the std channel mpsc and stumbled on a `Send` bound for a `Error` impl. Tokio's maintainer `@Darksonn` pointed out to me that `Error` used to required the `Send` bound long time ago (here rust-lang#23541). In the meantime, the `Send` bound `Error` got removed (see rust-lang#21312 and rust-lang#23799). So here a PR to removed this bound for `SendError<T>`, `TrySendError<T>` and `SendTimeoutError<T>`.
bors
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May 16, 2023
…ror, r=dtolnay Remove unnecessary Send bound Hi, While working on a [PR on Tokio](tokio-rs/tokio#5666), I took inspiration from the std channel mpsc and stumbled on a `Send` bound for a `Error` impl. Tokio's maintainer `@Darksonn` pointed out to me that `Error` used to required the `Send` bound long time ago (here rust-lang#23541). In the meantime, the `Send` bound `Error` got removed (see rust-lang#21312 and rust-lang#23799). So here a PR to removed this bound for `SendError<T>`, `TrySendError<T>` and `SendTimeoutError<T>`.
RalfJung
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May 16, 2023
…olnay Remove unnecessary Send bound Hi, While working on a [PR on Tokio](tokio-rs/tokio#5666), I took inspiration from the std channel mpsc and stumbled on a `Send` bound for a `Error` impl. Tokio's maintainer `@Darksonn` pointed out to me that `Error` used to required the `Send` bound long time ago (here rust-lang/rust#23541). In the meantime, the `Send` bound `Error` got removed (see rust-lang/rust#21312 and rust-lang/rust#23799). So here a PR to removed this bound for `SendError<T>`, `TrySendError<T>` and `SendTimeoutError<T>`.
thomcc
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Jul 18, 2023
…olnay Remove unnecessary Send bound Hi, While working on a [PR on Tokio](tokio-rs/tokio#5666), I took inspiration from the std channel mpsc and stumbled on a `Send` bound for a `Error` impl. Tokio's maintainer `@Darksonn` pointed out to me that `Error` used to required the `Send` bound long time ago (here rust-lang/rust#23541). In the meantime, the `Send` bound `Error` got removed (see rust-lang/rust#21312 and rust-lang/rust#23799). So here a PR to removed this bound for `SendError<T>`, `TrySendError<T>` and `SendTimeoutError<T>`.
RalfJung
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Apr 20, 2024
…olnay Remove unnecessary Send bound Hi, While working on a [PR on Tokio](tokio-rs/tokio#5666), I took inspiration from the std channel mpsc and stumbled on a `Send` bound for a `Error` impl. Tokio's maintainer `@Darksonn` pointed out to me that `Error` used to required the `Send` bound long time ago (here rust-lang/rust#23541). In the meantime, the `Send` bound `Error` got removed (see rust-lang/rust#21312 and rust-lang/rust#23799). So here a PR to removed this bound for `SendError<T>`, `TrySendError<T>` and `SendTimeoutError<T>`.
RalfJung
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Apr 27, 2024
…olnay Remove unnecessary Send bound Hi, While working on a [PR on Tokio](tokio-rs/tokio#5666), I took inspiration from the std channel mpsc and stumbled on a `Send` bound for a `Error` impl. Tokio's maintainer `@Darksonn` pointed out to me that `Error` used to required the `Send` bound long time ago (here rust-lang/rust#23541). In the meantime, the `Send` bound `Error` got removed (see rust-lang/rust#21312 and rust-lang/rust#23799). So here a PR to removed this bound for `SendError<T>`, `TrySendError<T>` and `SendTimeoutError<T>`.
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The Send bound is an unnecessary restriction, and though provided as a convenience, can't be removed by downstream code.
The removal of this bound is a [breaking-change] since it removes an implicit Send bound on all
E: Errorand allErrortrait objects.To migrate, consider if your code actually requires the Send bound and, if so, add it explicitly.
Fixes #23774
r? @aturon