Problems with Mxpy contract build – `#![feature]` may not be used on the stable release channel

help
1

I keep running into this issue when trying to run mxpy contract build for a MultiversX smart contract:

error[E0554]: `#![feature]` may not be used on the stable release channel
 --> /home/dubskiski/multiversx-sdk/vendor-rust/registry/src/github.com-1ecc6299db9ec823/multiversx-sc-derive-0.39.8/src/lib.rs:4:12
  |
4 | #![feature(proc_macro_quote)]
  |            ^^^^^^^^^^^^^^^^

For more information about this error, try `rustc --explain E0554`.
error: could not compile `multiversx-sc-derive` due to previous error
warning: build failed, waiting for other jobs to finish...
CRITICAL:cli:Build error: None.====>   ] 108/119: serde_derive

I have set nightly to override and default (rustup show):

Default host: x86_64-unknown-linux-gnu
rustup home:  /home/dubskiski/snap/rustup/common/rustup

nightly-x86_64-unknown-linux-gnu (environment override by RUSTUP_TOOLCHAIN)
rustc 1.70.0-nightly (17c116721 2023-03-29)

Everywhere I look it says to do 'rustup default nightly', this does not work for me. I found another thread on here with the same issue that wasn't resolved and closed after 90 days. Please help, thanks!

2

Can you be more specific? What behavior are you seeing?

3

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