error: could not create home directory: '/.rustup' with use-cross

[lpil]

Hello! Thank you for this useful project

Description

A couple days ago my workflow stopped working without modification. Upon attempting to run cargo build with use-cross set to true I get this error:

Status: Downloaded newer image for clux/muslrust:latest
error: could not create home directory: '/.rustup'
Error: error: caused by: Permission denied (os error 13)
Error: The process 'cross' failed with exit code 1

Workflow code

Here is my workflow: https://github.com/gleam-lang/gleam/blob/e25991fe92901577b47b0c6d3d71894a7abbc5e0/.github/workflows/ci.yaml#L46-L51

I believe this to be a reproduction:

name: ci
on:
  pull_request:
  push:
    branches:
      - main
jobs:
  test:
    env:
      RUSTFLAGS: "-D warnings"
    name: test
    runs-on: ubuntu-latest

    steps:
    - name: Checkout repository
      uses: actions/checkout@v2

    - name: Install Rust toolchain
      uses: actions-rs/toolchain@v1
      with:
        toolchain: stable
        target: x86_64-unknown-linux-musl
        profile: minimal
        override: true

    - name: Build binary
      uses: actions-rs/cargo@v1
      with:
        use-cross: true
        command: build
        args: --release --target x86_64-unknown-linux-musl

Action output

Here is the full log https://github.com/gleam-lang/gleam/runs/2828986249?check_suite_focus=true

Expected behavior

cargo build runs

Thanks,
Louis

[praveenperera]

Could be related to a change made in the base image 3 days ago: clux/muslrust@fb96930

[lpil]

I think this may also be related to cross-rs/cross#543, which is as yet not released

[tranzystorekk]

Unfortunately this still happens with cross 0.2.2 (newly released), so it's probably not directly caused by cross, or some changes might be needed in clux/muslrust

EDIT: specifying the CROSS_CONTAINER_UID: 0 env variable fixes this after all!

[lpil]

Fab! Thanks @tranzystorek-io