Cannot build for x86_64-pc-windows-gnu with nightly toolchain #29
Comments
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This issue needs an in-depth analysis. For now, I disable the affected platform. |
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I decided to look into this myself, and it seems to run far deeper than Lavagna. I'm starting to get very surprised that nobody else has encountered this. I can reproduce it with a minimal working example: https://github.com/patowen/lavagna/tree/broken-build-script (See patowen#1 for the failing workflows, although that link is less reliable). Since I may delete my fork at some point, I'll list out the minimal reproducible example here: .github\workflows\ci.yml: name: ci
on:
workflow_dispatch:
pull_request:
push:
branches:
- main
schedule:
- cron: '00 01 * * *'
jobs:
build:
name: build
env:
# Emit backtraces on panics.
RUST_BACKTRACE: 1
CARGO_INCREMENTAL: 0
runs-on: windows-2019
strategy:
fail-fast: false
matrix:
rust_version:
- stable
- beta
- nightly
steps:
- name: Checkout repository
uses: actions/checkout@v2
- name: Install Rust
uses: actions-rs/toolchain@v1
with:
toolchain: ${{ matrix.rust_version }}-x86_64-pc-windows-gnu
target: x86_64-pc-windows-gnu
profile: minimal
override: true
- name: Build
shell: bash
run: cargo build --verbose --target x86_64-pc-windows-gnusrc\main.rs: fn main() {
println!("Hello world");
}build.rs: fn main() {
println!("I am in a build script.");
}Cargo.lock: Cargo.toml: [package]
name = "proc-macro2-testing-for-lavagna"
version = "0.1.0"
edition = "2021"Result of "Build" step on beta branch: |
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I haven't been able to reproduce the error locally, so it seems specific to GitHub actions, possibly some configuration it uses. I tried building the minimal example with a bunch of different nightly versions on GitHub, and it seems like nightly-2024-02-26 (also known as 1.78.0-nightly (0ecbd0605 2024-02-25)) is the last good version, and nightly-2024-02-27 (also known as 1.78.0-nightly (fc3800f65 2024-02-26)) is the first bad version. Unfortunately, it isn't as simple as checking the comparison because it's huge, and nothing seems to mention GNU (https://github.com/rust-lang/rust/compare/0ecbd0605..fc3800f65). The only thing I've found so far that could be even semi-related is the addition of |
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Interestingly, using Windows Server 2022 instead of 2019 seems to fix the issue. I asked in Zulip in case anyone has any better ideas, but there does seem to be an effective workaround now. Perhaps I would have been able to reproduce this locally if I owned a copy of Windows Server 2019. |
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It seems like the root cause was that the Windows 2019 version on GitHub Actions has an outdated version of MinGW, and changes were made to I believe any of the following actions will resolve this issue with lavagna:
Now that simply waiting will likely resolve this issue, I think it's safe to ignore it for now. I mainly took the time to investigate this because I'm thankful that this project was made and wanted to try to help out where I could on the (likely) more annoying aspects of maintaining it. |
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Nice catch! I'm trying with windows-2022 right now, which seems to be the quickest fix possible. |
Check this github actions run: https://github.com/alepez/lavagna/actions/runs/8694841480/job/23844594711
It fails with this errors:
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