nanox build error: no method named compare_exchange found for struct core::sync::atomic::AtomicU8 in the current scope

[Pana]

When developing a Ledger device app with Rust, I introduced a fundamental library called bytes. This library is very foundational in Rust development and is widely used, including in embedded devices. However, when selecting the Nano X device, the compilation failed, and I encountered the following error.

However, when selecting the Nano S Plus, Stax, or Flex devices, the compilation succeeds.

[Pana]

Related issue tokio-rs/bytes#461

[yogh333]

Yes atomic swap is not supported on NanoX:

ledger-device-rust-sdk/ledger_device_sdk/nanox.json

Line 4 in 63c08b1

"atomic-cas": false,