diff --git a/rtic-monotonics/README.md b/rtic-monotonics/README.md
index 31a39225df3..caaf5f6ed71 100644
--- a/rtic-monotonics/README.md
+++ b/rtic-monotonics/README.md
@@ -15,6 +15,16 @@ For RTIC v1 see [`rtic-monotonic`](https://github.com/rtic-rs/rtic-monotonic)
 
 ### [Changelog `rtic-monotonics`](https://github.com/rtic-rs/rtic/blob/master/rtic-monotonics/CHANGELOG.md)
 
+## Supported Platforms
+
+The following microcontroller families feature efficient monotonics using peripherals.
+Refer to the [crate documentation](https://docs.rs/rtic-monotonics) for more details.
+
+- RP2040
+- i.MX RT
+- nRF
+- ATSAMD
+
 ## License
 
 Licensed under either of
diff --git a/rtic-monotonics/src/lib.rs b/rtic-monotonics/src/lib.rs
index 3db10f8a572..38f3b5380b7 100644
--- a/rtic-monotonics/src/lib.rs
+++ b/rtic-monotonics/src/lib.rs
@@ -25,6 +25,11 @@
 //! tag, describing what parts _do_ support that monotonic. Monotonics without an
 //! `Available on crate features X only` tag are available on any `nrf52*` feature.
 //!
+//! # ATSAMD
+//! Monotonics for the ATSAMD family of parts using the real time clock (RTC) are provided in the
+//! [`atsamd-hal`](https://docs.rs/atsamd-hal/latest/atsamd_hal/rtc/rtic/index.html)
+//! crate with the `rtic` feature enabled.
+//!
 //! # Priority of interrupt handlers
 //!
 //! The priority of timer interrupts are based on `RTIC_ASYNC_MAX_LOGICAL_PRIO` generated by RTIC.
diff --git a/rtic-sync/src/signal.rs b/rtic-sync/src/signal.rs
index a7bef0f9b5b..afe49bdb04f 100644
--- a/rtic-sync/src/signal.rs
+++ b/rtic-sync/src/signal.rs
@@ -110,7 +110,7 @@ where
     }
 }
 
-impl<'a, T: Copy> SignalReader<'a, T> {
+impl<T: Copy> SignalReader<'_, T> {
     /// Immediately read and evict the latest value stored in the Signal.
     fn take(&mut self) -> Store<T> {
         critical_section::with(|_| {
diff --git a/xtask/src/cargo_command.rs b/xtask/src/cargo_command.rs
index ab57fd70e4b..e711f743365 100644
--- a/xtask/src/cargo_command.rs
+++ b/xtask/src/cargo_command.rs
@@ -424,7 +424,7 @@ impl<'a> CargoCommand<'a> {
         features: &'i Option<String>,
         mode: Option<&'i BuildMode>,
         extra: T,
-    ) -> Vec<&str> {
+    ) -> Vec<&'i str> {
         let mut args: Vec<&str> = Vec::new();
 
         if nightly {