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nrf52-troubleshoot-cargo-run-error.md

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cargo run errors

You may get one of these errors:

  • "Access denied (insufficient permissions)" (seen on macOS)
  • "USB error while taking control over USB device: Resource busy" (seen on Linux)
$ cargo run --bin usb-4
Running `probe-rs run --chip nRF52840_xxAA target/thumbv7em-none-eabihf/debug/usb-4`
Error: An error specific to a probe type occured: USB error while taking control over USB device: Access denied (insufficient permissions)

Caused by:
    USB error while taking control over USB device: Access denied (insufficient permissions)
$ cargo run --bin usb-4
Running `probe-rs run --chip nRF52840_xxAA target/thumbv7em-none-eabihf/debug/usb-4`
Error: An error specific to a probe type occured: USB error while taking control over USB device: Resource busy

Caused by:
    USB error while taking control over USB device: Resource busy

All of them have the same root issue: You have another instance of the cargo run process running.

It is not possible to have two or more instances of cargo run running. Terminate the old instance before executing cargo run. If you are using VS Code click the garbage icon ("Kill Terminal") on the top right corner of the terminal output window (located on the bottom of the screen).