These are the packages that would be merged, in order:

Calculating dependencies... done!

!!! Problems have been detected with your world file
!!! Please run emaint --check world


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sys-apps/mlocate

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(dependency required by "app-shells/bash-completion-1.1-r5" [ebuild])
(dependency required by "app-admin/eselect-1.2.11" [ebuild])
(dependency required by "sys-apps/portage-2.1.8.3" [ebuild])
(dependency required by "@world" [argument])