livecd / # emerge dhcpcd
Calculating dependencies... done!
>>> Emerging (1 of 1) net-misc/dhcpcd-2.0.5-r1 to /
>>> Downloading http://distfiles.gentoo.org/distfiles/dhcpcd-2.0.5.tar.bz2
--04:36:43--  http://distfiles.gentoo.org/distfiles/dhcpcd-2.0.5.tar.bz2
           => `/usr/portage/distfiles/dhcpcd-2.0.5.tar.bz2'
Resolving distfiles.gentoo.org... 216.165.129.135, 156.56.247.195, 64.50.238.52, ...
Connecting to distfiles.gentoo.org|216.165.129.135|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 124,838 (122K) [application/x-tar]

100%[====================================>] 124,838      335.30K/s

04:36:44 (334.42 KB/s) - `/usr/portage/distfiles/dhcpcd-2.0.5.tar.bz2' saved [124838/124838]

>>> checking ebuild checksums ;-)
>>> checking auxfile checksums ;-)
>>> checking miscfile checksums ;-)
>>> checking dhcpcd-2.0.5.tar.bz2 ;-)
>>> Unpacking source...
>>> Unpacking dhcpcd-2.0.5.tar.bz2 to /var/tmp/portage/dhcpcd-2.0.5-r1/work
 * Applying dhcpcd-2.0.0-alwaysup.patch ...                               [ ok ]touch: setting times of `/var/tmp/portage/dhcpcd-2.0.5-r1/.unpacked': Function not implemented

!!! ERROR: net-misc/dhcpcd-2.0.5-r1 failed.
Call stack:
  ebuild.sh, line 1539:   Called dyn_unpack
  ebuild.sh, line 712:   Called die

!!! IO Failure -- Failed 'touch .unpacked' in /var/tmp/portage/dhcpcd-2.0.5-r1
!!! If you need support, post the topmost build error, and the call stack if relevant.