Merge branch 'master' into infallible-cs

embedded-hal-bus/README.md

@@ -30,7 +30,8 @@ provides mechanisms to obtain multiple `I2c` instances out of a single `I2c` ins
 
 ## Optional Cargo features
 
-- **`std`**: enable shared bus implementations using `std::sync::Mutex`.
+- **`std`**: enable shared bus implementations using `std::sync::Mutex`, and implement
+  `std::error::Error` for `DeviceError`.
 - **`async`**: enable `embedded-hal-async` support.
 - **`defmt-03`**: Derive `defmt::Format` from `defmt` 0.3 for enums and structs.