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Update the actions environments to Ubuntu 22.04. #51

Update the actions environments to Ubuntu 22.04.

Update the actions environments to Ubuntu 22.04. #51

Workflow file for this run

# Calculates the size diffs for the each example binary. Runs when a pull
# request is created or modified.
name: size-diff
# We want to run this on all pull requests. Additionally, GitHub actions merge
# queue needs workflows to run on the `merge_queue` trigger to block merges on
# them.
on:
pull_request:
merge_group:
jobs:
size-diff:
# Using ubuntu-latest can cause breakage when ubuntu-latest is updated to
# point at a new Ubuntu version. Instead, explicitly specify the version, so
# we can update when we need to. This *could* break if we don't update it
# until support for this version is dropped, but it is likely we'll have a
# reason to update to a newer Ubuntu before then anyway.
runs-on: ubuntu-22.04
steps:
# Clones a single commit from the libtock-rs repository. The commit cloned
# is a merge commit between the PR's target branch and the PR's source.
# We'll later add another commit (the pre-merge target branch) to the
# repository.
- name: Clone repository
uses: actions/checkout@v3
# The main diff script. Stores the sizes of the example binaries for both
# the merge commit and the target branch. We display the diff in a
# separate step to make it easy to navigate to in the GitHub Actions UI.
#
# If the build on master doesn't work (`make -j2 examples` fails), we
# output a warning message and ignore the error. Ignoring the error
# prevents this workflow from blocking PRs that fix a broken build in
# master.
- name: Compute sizes
run: |
UPSTREAM_REMOTE_NAME="${UPSTREAM_REMOTE_NAME:-origin}"
GITHUB_BASE_REF="${GITHUB_BASE_REF:-master}"
cd "${GITHUB_WORKSPACE}"
make -j2 examples # The VM this runs on has 2 logical cores.
cargo run --release -p print_sizes >'${{runner.temp}}/merge-sizes'
git remote set-branches "${UPSTREAM_REMOTE_NAME}" "${GITHUB_BASE_REF}"
git fetch --depth=1 "${UPSTREAM_REMOTE_NAME}" "${GITHUB_BASE_REF}"
git checkout "${UPSTREAM_REMOTE_NAME}/${GITHUB_BASE_REF}"
make -j2 examples && \
cargo run --release -p print_sizes >'${{runner.temp}}/base-sizes' || \
echo 'Broken build on the master branch.'
# Computes and displays the size diff. diff returns a nonzero status code
# if the files differ, and GitHub interprets a nonzero status code as an
# error. To avoid GitHub interpreting a difference as an error, we add
# || exit 0 to the command. This also prevents the workflow from failing
# if the master build is broken and we didn't generate base-sizes.
- name: Size diff
run: diff '${{runner.temp}}/base-sizes' '${{runner.temp}}/merge-sizes' || exit 0