Error due to manifest from corenetwork-1.5.2 in portage
funtoo rj # emerge --buildpkgonly sys-apps/corenetwork
Calculating dependencies... done!

>>> Verifying ebuild manifests

>>> Emerging (1 of 1) sys-apps/corenetwork-1.5.3::gentoo
!!! Fetched file: corenetwork-1.5.3.tar.gz VERIFY FAILED!
!!! Reason: Insufficient data for checksum verification
!!! Got:
!!! Expected: MD5 RMD160 SHA1 SHA256 SHA512 WHIRLPOOL

• Fetch failed for 'sys-apps/corenetwork-1.5.3', Log file:
• '/var/log/portage/sys-apps:corenetwork-1.5.3:20151025-222805.log'

>>> Failed to emerge sys-apps/corenetwork-1.5.3, Log file:

>>> '/var/log/portage/sys-apps:corenetwork-1.5.3:20151025-222805.log'