Migration did not meet the requirements when using cache.backend.null

I've found that this issue seems to occur when I use drush to run a migration - drush migrate:import users_migration, which has a required dependency on users_roles_migration, results in this error:

Migration users_migration did not meet the requirements. Missing migrations users_roles_migration. requirements: users_roles_migration.

However, if I run the migration through the Migrate Tools UI it executes correctly and runs the required dependencies first. I've got $settings['cache']['default'] = 'cache.backend.null'; commented out.

I got the "Migration did not meet requirements" error while importing translated nodes. In my case it had nothing to do with caching, but I am sharing the cause and solution here anyway, in case anyone else searches and finds this issue, like I just did.

It turned out there was a duplicate id, which caused a required migration (locations) to not complete:

$ drush migrate:status
 ------------------- -------- ------- ------------- -------------
  Migration ID        Status   Total   Imported      Unprocessed
 ------------------- -------- ------- ------------- -------------
  locations           Idle     796     795 (99.9%)   1
  locations_en        Idle       0     796 (0%)      796

I got the requirement error when I tried to run with --all --execute-dependencies or partial test migrations with locations_en:
drush migrate:import locations_en --limit=5 --migrate-debug

After fixing the duplicate id, the locations migration completed to 100%, and I could run partial locations_en test migrations, or full.