anchor.diff:  
   ### BUILDKITE\_PLUGIN_VALIDATION
   
  -Whether the agent is configured to validate plugin options. This variable is read by the bootstrap when the agent is started, and can only be set by exporting the environment variable in the `environment` or `pre-checkout` hooks.
  +Whether the agent is configured to validate plugin options. This variable is generated by the `buildkite-agent start` command for use by the `buildkite-agent bootstrap` command ???
   
   Values: `"true"` and `"false"`
   
  
positive.code: 
  ### BUILDKITE\_ARTIFACT\_UPLOAD_DESTINATION
  
  The path where artifacts will be uploaded. This variable is read by the bootstrap when the agent is started, and can only be set by exporting the environment variable in the `environment` or `pre-checkout` hooks.
  
  Example: `"s3://name-of-your-s3-bucket/$BUILDKITE_JOB_ID"`
  
  
negative.code: 
  ### BUILDKITE\_NO\_LOCAL_HOOKS
  
  Whether local hooks in the repository are allowed. This variable is read by the `buildkite-agent start` command ???. It can be set in the [agent config](https://buildkite.com/docs/agent/v3/configuration) file using the `no-local-hooks` option, or in by exporting this environment variable in the `environment`, `pre-checkout` or `pre-command` hooks.
  
  Values: `"true"` or `"false"`
  
  