Subxt integration tests failed against latest Substrate build.

[github-actions]

The nightly CI run which downloads the latest version of Substrate ran into test failures, which likely means that there are breaking changes that need fixing in Subxt.

Go to https://github.com/paritytech/subxt/actions/workflows/nightly.yml to see details about the failure.

[lexnv]

Details

The error is generated by

 error[E0308]: mismatched types
 --> /home/runner/work/subxt/subxt/target/debug/build/test-runtime-eeeace8618671647/out/runtime.rs:2:9
  |
2 | /         #[subxt::subxt(
3 | |             runtime_metadata_path = "/home/runner/work/subxt/subxt/target/debug/build/test-runtime-eeeace8618671647/out/metadata.scale",
4 | |             generated_type_derives = "Eq, PartialEq"
5 | |         )]
  | |__________^ expected `u8`, found array `[u8; 4]`
  |
  = note: this error originates in the attribute macro `subxt::subxt` (in Nightly builds, run with -Z macro-backtrace for more info)

It might be possible that substrate introduced changes that are not reflected yet in subxt.

Run curl $SUBSTRATE_URL --output substrate --location
  curl $SUBSTRATE_URL --output substrate --location
  chmod +x substrate
  mkdir -p ~/.local/bin
  mv substrate ~/.local/bin
  shell: /usr/bin/bash -e {0}
  env:
    CARGO_TERM_COLOR: always
    SUBSTRATE_URL: https://releases.parity.io/substrate/x86_64-debian:stretch/latest/substrate/substrate

I have seen this exact issue happen once in #478 , during multiple commit pushes, and expected that a wrong substrate binary was temporarily released.

Next Step

• reproduce locally
• identify the issue
• push PR

[lexnv]

Substrate binary is resolved to 65b44e91be - add notes and warnings to ProvideInherent docs (#9730) from the current head of origin/master.

[lexnv]

Change introduced in substrate via commit 6c92fc317bb - PR Allow pallet error enum variants to contain fields #10242.