Example http-client fails to build

[tomfitzhenry]

I've tried following https://esp-rs.github.io/no_std-training/ but had troubles compiling the http-client example.

Steps to reproduce (running on NixOS):

$ rustup toolchain install nightly-2023-06-25 --component rust-src --target riscv32imc-unknown-none-elf
$ rustup --version
rustup 1.26.0 (1980-01-01)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.72.0-nightly (f7ca9df69 2023-06-24)`
$ git clone https://github.com/esp-rs/no_std-training
$ cd no_std-training/intro/http-client/
$ cargo run --release --example http-client

I have attached the build output: http-client.txt.

I'm not very familiar with Rust, but it looks like dependencies embedded-io and linked_list_allocator failed to build.

I was able to build the hello world, per https://esp-rs.github.io/no_std-training/02_4_hello_world.html .

[tomfitzhenry]

I see Github CI managed to successfully build the http-client example yesterday: https://github.com/esp-rs/no_std-training/actions/runs/6717152244/job/18254507001

This seems like to be PEBKAC? I'll dig more into what the CI is doing differently to me.

[SergioGasquez]

Just tried reproducing your issue, and I was able to build it successfully, do you mind trying to do cargo clean on the http-client ?

[tomfitzhenry]

I just managed to get this working, by uninstalling the cargo that I had installed via my OS's package manager.

Per https://nixos.wiki/wiki/Rust, it seems I should just let rustup manage my cargo installation. So be it! :)

Thanks for your help @SergioGasquez

[SergioGasquez]

Oh right, installing Rust via package managers tend to be problematic: https://esp-rs.github.io/book/installation/rust.html

Glad that is now working!