ensure that wgpu::Error is Sync (#5820)

* ensure that `wgpu::Error` is `Sync`

This makes it possible to wrap the error in `anyhow::Error` and
`eyre::Report`, which require the inner error to be `Sync`.

* update changelog

CHANGELOG.md

@@ -134,6 +134,7 @@ By @atlv24 in [#5383](https://github.com/gfx-rs/wgpu/pull/5383)
 #### General
 
 - Avoid introducing spurious features for optional dependencies. By @bjorn3 in [#5691](https://github.com/gfx-rs/wgpu/pull/5691)
+- `wgpu::Error` is now `Sync`, making it possible to be wrapped in `anyhow::Error` or `eyre::Report`. By @nolanderc in [#5820](https://github.com/gfx-rs/wgpu/pull/5820)
 
 #### Metal
 - Removed the `link` Cargo feature.

wgpu/src/lib.rs

@@ -5873,7 +5873,7 @@ pub enum Error {
         /// Lower level source of the error.
         #[cfg(send_sync)]
         #[cfg_attr(docsrs, doc(cfg(all())))]
-        source: Box<dyn error::Error + Send + 'static>,
+        source: Box<dyn error::Error + Send + Sync + 'static>,
         /// Lower level source of the error.
         #[cfg(not(send_sync))]
         #[cfg_attr(docsrs, doc(cfg(all())))]
@@ -5884,7 +5884,7 @@ pub enum Error {
         /// Lower level source of the error.
         #[cfg(send_sync)]
         #[cfg_attr(docsrs, doc(cfg(all())))]
-        source: Box<dyn error::Error + Send + 'static>,
+        source: Box<dyn error::Error + Send + Sync + 'static>,
         /// Lower level source of the error.
         #[cfg(not(send_sync))]
         #[cfg_attr(docsrs, doc(cfg(all())))]
@@ -5899,7 +5899,7 @@ pub enum Error {
         /// Lower level source of the error.
         #[cfg(send_sync)]
         #[cfg_attr(docsrs, doc(cfg(all())))]
-        source: Box<dyn error::Error + Send + 'static>,
+        source: Box<dyn error::Error + Send + Sync + 'static>,
         /// Lower level source of the error.
         #[cfg(not(send_sync))]
         #[cfg_attr(docsrs, doc(cfg(all())))]
@@ -5909,7 +5909,7 @@ pub enum Error {
     },
 }
 #[cfg(send_sync)]
-static_assertions::assert_impl_all!(Error: Send);
+static_assertions::assert_impl_all!(Error: Send, Sync);
 
 impl error::Error for Error {
     fn source(&self) -> Option<&(dyn error::Error + 'static)> {