>>> Emerging : portage://dev-util/lttng-ust-2.12.10:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ download  portage://dev-libs/userspace-rcu-0.15.6
             │           └─ file ─┤ 669.98 Kb  	 userspace-rcu-0.15.6.tar.bz2
             │ download  portage://dev-util/lttng-ust-2.12.10
             │           └─ file ─┤ 782.67 Kb  	 lttng-ust-2.12.10.tar.bz2

Total: 2 actions (2 downloads), grouped into 1 step.
       1.42 Mb to be downloaded.