v3.50.4

v3.50.4 (2023-07-31)

Full Changelog

This point release fixes more parser cases in previous point releases of 3.50. We recommend anyone using v3.50.0 through v3.50.3 upgrade, especially when experiencing problems with previously-working pipeline YAML.

• Legacy step forms (where the step type is specified with type) should parse correctly
• Scalar (i.e. non-map) block steps should parse correctly
• Explicit env: null should parse correctly
• Parser errors should no longer cause the pipeline to be missing steps; either errors should halt processing or unknown step types remain in the output (though these might still be rejected by buildkite.com).

⚠️ There is a remaining known issue concerning environment variable substitution in pipelines. When environment variables that are defined as null at the top level of a pipeline upload are substituted, they will no longer fall back to values defined in the environment of the buildkite-agent. For example, if you had a pipeline

env:
  FOO: null
steps:
- command: echo "FOO=$FOO"

and upload the pipeline as

FOO=fromJob buildkite-agent pipeline upload

the uploaded pipeline was previously equivalent to:

env:
  FOO: null
steps:
- command: echo "FOO=fromJob"

but now, the null value will result in an empty string being substituted instead.

To work around this, we recommend you defined the fallback manually like so:

env:
  FOO: ${FOO:-}
steps:
- command: echo "FOO=$FOO"

Fixed

• Even More Pipeline Parsing Fixes #2253 (@moskyb)
• Fix missing return statements when unmarshalling fails #2245 (@moskyb), #2257 (@DrJosh9000)
• Add future-proofing UnknownStep type #2254 (@DrJosh9000)
• Nil handling fixes, particularly parsing env: null #2260 (@DrJosh9000)

Changed

• Remove docker-compose v1 from ubuntu 22.04 and replace with compatibility script #2248 (@triarius)
• Authentication failure errors when using S3 now mention BUILDKITE_S3_PROFILE and AWS_PROFILE #2247 (@DrJosh9000)

Internal

• Remove a double check for the existence of a local hook and log when it is missing in debug #2249 (@triarius)
• Refactor some code in process.go #2251 (@triarius)
• Store GOCACHE outside container #2256 (@DrJosh9000)
• Get mime types from github, rather than Apache's SVN Server #2255 (@moskyb)
• Check that go.mod is tidy in CI #2246 (@moskyb) and fix flakiness of this check #2261 (@triarius)