workspace_value_not_string

Workspace entries are required to be directory paths (strings).

The analyzer produces this diagnostic when a workspace list contains a value that isn't a string.

The following code produces this diagnostic because the workspace list contains a map:

name: example
workspace:
    - image.gif: true

Change the workspace list so that it only contains valid POSIX-style directory paths:

name: example
workspace:
    - pkg/package_1
    - pkg/package_2