openlp gentoo build error

>>> Install openlp-2.3.2 into /var/tmp/portage/app-office/openlp-2.3.2/image/ ca
tegory app-office
python setup.py install --root=/var/tmp/portage/app-office/openlp-2.3.2/image//_
python3.5 --root=/ --optimize=1
running install
running build
running build_py
creating /lib/openlp
 * ACCESS DENIED:  mkdir:        /lib/openlp
error: could not create '/lib/openlp': Permission denied
 * ERROR: app-office/openlp-2.3.2::dsr failed (install phase):
 *   (no error message)
 *
 * Call stack:
 *     ebuild.sh, line  133:  Called src_install
 *   environment, line 2567:  Called distutils-r1_python_install '--root=/' '--o
ptimize=1'
 *   environment, line  660:  Called esetup.py 'install' '--root=/var/tmp/portag
e/app-office/openlp-2.3.2/image//_python3.5' '--root=/' '--optimize=1'
 *   environment, line  994:  Called die
 * The specific snippet of code:
 *       "${@}" || die "${die_args[@]}" || return ${?}
 *
 * If you need support, post the output of `emerge --info '=app-office/openlp-2.
3.2::dsr'`,
 * the complete build log and the output of `emerge -pqv '=app-office/openlp-2.3
.2::dsr'`.
 * The complete build log is located at '/var/tmp/portage/app-office/openlp-2.3.
2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/app-office/openlp
-2.3.2/temp/environment'.
 * Working directory: '/var/tmp/portage/app-office/openlp-2.3.2/work/OpenLP-2.3.
2'
 * S: '/var/tmp/portage/app-office/openlp-2.3.2/work/OpenLP-2.3.2'
 * --------------------------- ACCESS VIOLATION SUMMARY ------------------------
---
 * LOG FILE: "/var/log/sandbox/sandbox-20241.log"
 *
VERSION 1.0
FORMAT: F - Function called
FORMAT: S - Access Status
FORMAT: P - Path as passed to function
FORMAT: A - Absolute Path (not canonical)
FORMAT: R - Canonical Path
FORMAT: C - Command Line

F: mkdir
S: deny
P: /lib/openlp
A: /lib/openlp
R: /lib64/openlp
C: /usr/bin/python setup.py install --root=/var/tmp/portage/app-office/openlp-2.
3.2/image//_python3.5 --root=/ --optimize=1