Description of problem:
Dnf doesn't show error message (like yum does) when trying to install obsoleted packages which may lead to confusing errors.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. dnf install blueman
Error: nothing provides gvfs-obexftp needed by blueman-1.23-7.fc20.x86_64
Package blueman-1.23-7.fc20.x86_64 is obsoleted by bluez-5.18-1.fc20.x86_64 which is already installed
Yum shows the above message (from expected results) which is probably better as it directly points user where the problem is.
This is not a bug, blueman can not be installed anyway and DNF first runs into the requires error before checking the obsoletes.