This error happens consistently when we submit https://crrev.com/c/1145740:

veyron_rialto: emerge: there are no binary packages to satisfy "chromeos-base/memd" 

For instance, see

https://luci-milo.appspot.com/buildbot/chromeos/veyron_rialto-paladin/8252

In the BuildPackages phase, I see this reference to memd:

[ebuild   R    ] virtual/target-chromium-os-1-r102::chromiumos to /build/veyron_rialto/ USE="bluetooth cellular compupdates containers cras crash_reporting cros_disks debugd memd* mist network_time pam postscript power_management profile readahead shill syslog system_locales tpm trim_supported usbguard vpn watchdog -biod -bootchart -bootimage -buffet -cr50_onboard -cros_ec -cros_embedded -cups -dptf -eclog -fonts -fuzzer -gobi -hammerd -ime -intel_lpe -kvm_host -ml_service -modemfwd -mtd -nfc -peerd (-scanner) -systemd -touchview -tpm2 -wimax" INPUT_DEVICES="evdev" 0 KiB
[ebuild   R    ] virtual/target-os-1.5-r1::chromeos to /build/veyron_rialto/ 0 KiB

Not sure what the * means but it is suspicious.

I have looked at the veyron_rialto private overlay and find no references to memd so I don't understand what's special about it.  Can I get some help with this?

Also, I am wondering if it would be OK to temporarily disable memd with a USE flag in overlay-variant-veyron-rialto-private/profiles/base/make.defaults, unless the fix for this is obvious.