Try #236:

Author: bors[bot]

Cargo.toml

@@ -1,3 +1,4 @@
+cargo-features = ["edition2021"]
 [package]
 name = "stm32h7xx-hal"
 version = "0.10.0"
@@ -10,7 +11,7 @@ authors = ["Andrew Straw <[email protected]>",
            "Matthew Meyer <[email protected]>",
            "Florian Jung <[email protected]>",
            "Matt Ickstadt <[email protected]>"]
-edition = "2018"
+edition = "2021"
 categories = ["embedded", "hardware-support", "no-std"]
 description = "Hardware Abstraction Layer implementation for STM32H7 series microcontrollers"
 keywords = ["arm", "cortex-m", "stm32h7xx", "hal", "embedded-hal"]