F4: Fix compilation for other MCUs

2 files changed, 2 insertions, 4 deletions

diff --git a/embassy-stm32f4-examples/src/bin/can.rs b/embassy-stm32f4-examples/src/bin/can.rs
index 701a277ec..5ffde2471 100644
--- a/embassy-stm32f4-examples/src/bin/can.rs
+++ b/embassy-stm32f4-examples/src/bin/can.rs
@@ -12,10 +12,8 @@ use example_common::{panic, *};
 use bxcan::filter::Mask32;
 use cortex_m_rt::entry;
 use embassy::executor::{task, Executor};
-use embassy::traits::gpio::*;
 use embassy::util::Forever;
 use embassy_stm32f4::{can, interrupt};
-use futures::pin_mut;
 use stm32f4xx_hal::prelude::*;
 use stm32f4xx_hal::{can::Can, stm32};
 
@@ -35,7 +33,7 @@ async fn run(dp: stm32::Peripherals, _cp: cortex_m::Peripherals) {
 
     let mut can = can::Can::new(can, interrupt::take!(CAN1_TX), interrupt::take!(CAN1_RX0));
 
-    let frame = can.receive().await;
+    let _frame = can.receive().await;
 }
 
 static EXECUTOR: Forever<Executor> = Forever::new();
diff --git a/embassy-stm32f4-examples/src/bin/serial.rs b/embassy-stm32f4-examples/src/bin/serial.rs
index b138bfdd8..49a588c25 100644
--- a/embassy-stm32f4-examples/src/bin/serial.rs
+++ b/embassy-stm32f4-examples/src/bin/serial.rs
@@ -43,7 +43,7 @@ async fn run(dp: stm32::Peripherals, _cp: cortex_m::Peripherals) {
 
     let streams = StreamsTuple::new(dp.DMA2);
 
-    let mut serial = unsafe {
+    let _serial = unsafe {
         serial::Serial::new(
             dp.USART1,
             (streams.7, streams.2),