If is not maintained please archive

[uhlhosting]

At the moment on latest roundcube when deployed via composer, interacts and breaks from installing any other plugins:

[root@cp roundcube]# composer require gianlucagiacometti/roundcube-toolbox
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Continue as root/super user [yes]? 
./composer.json has been updated
Running composer update gianlucagiacometti/roundcube-toolbox
Loading composer repositories with package information
Updating dependencies
Lock file operations: 1 install, 0 updates, 0 removals
  - Locking gianlucagiacometti/roundcube-toolbox (1.6.0)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
    Install of gianlucagiacometti/roundcube-toolbox failed

In File_Format_Iaf.php line 343:
                                                                                           
  "continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"?  
                                                                                           

require [--dev] [--dry-run] [--prefer-source] [--prefer-dist] [--prefer-install PREFER-INSTALL] [--fixed] [--no-suggest] [--no-progress] [--no-update] [--no-install] [--no-audit] [--audit-format AUDIT-FORMAT] [--update-no-dev] [-w|--update-with-dependencies] [-W|--update-with-all-dependencies] [--with-dependencies] [--with-all-dependencies] [--ignore-platform-req IGNORE-PLATFORM-REQ] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--apcu-autoloader-prefix APCU-AUTOLOADER-PREFIX] [--] [<packages>...]

[root@cp roundcube]#