Steps to reproduce:

1. Ensure a master installation with legacy bridge and legacy installed;

2. From your ezpublish root directory, on a master, simply run:

php ezpublish/console ezpublish:legacy:script update/common/scripts/5.4/fixtrashedimagereferences.php

You will see:

Running script 'update/common/scripts/5.4/fixtrashedimagereferences.php' in eZ Publish legacy context
  [RuntimeException]
  Trying to run recursive callback in legacy kernel! Inception!
ezpublish:legacy:script [--legacy-help] [--] <script>

The script works anyway, and removes invalid wrong xml image references from the database (EZP-25077, out of this issue scope), but the error shouldn't happen anyway.
The error does not happen on a 5.4.5, for instance.