USB fails without any errors on nightly

[Joseph Subash Kanichai]

USB appears to fail when the UsbDeviceBuilder is called, regardless of what it is used for (serial, hid etc). The device gets stuck at this line and never goes over (does not panic, just gets stuck). Not sure if this is an issue with stm32f4xx-hal or with usb-device, and it is happening only on nightly, all usb forms run fine on stable.

Line that fails:

stm32f4xx-hal/examples/usb-serial-poll.rs

Line 43 in 15134d7

 let mut usb_dev = UsbDeviceBuilder::new(&usb_bus, UsbVidPid(0x16c0, 0x27dd)) 

Environment:

• stm32f401ccu6 (black pill)
• nighly version (failing): 1.69.0
• stable version (working): 1.67.0

[Zgarbul Andrey]

It could also be related to stm32-rs/synopsys-usb-otg#33

Try cargo update, please.

[Joseph Subash Kanichai]

@burrbull Yep that worked.