cargo build fails

[hassan-xy]

Hi guys, I am using a custom dev baord running ubuntu 20.04 and tried to build this repo. But I receive the above error.
I tried to change the env_logger version but still receive the same error.
Please guide me.

Thanks

[3wnbr1]

You need at least rust 1.77 as of now. I would advise against the ubuntu built-in toolchain which is surely out-of-date

Use the rustup toolchain manager instead - https://rustup.rs

[ivmarkov]

Use Rust 1.77 and do cargo update before the build. The build does succeed, as we run it nightly in our CI pipeline.