I got some not-so-bad news : build is failing for me too, with similar messages.
From https://forum.xda-developers.com/t/rom-official-lineage-os-17-1-for-pixel-2-2-xl.3984909/ and some research in Gitlab I added a custom roomservice.xml manifest file :
<manifest>
<project name="LineageOS/android_device_google_walleye" path="device/google/walleye" remote="github"/>
<project name="LineageOS/android_device_google_muskie" path="device/google/muskie" remote="github"/>
<project name="LineageOS/android_kernel_google_wahoo" path="kernel/google/wahoo" remote="github"/>
<project name="TheMuppets/proprietary_vendor_google" path="vendor/google" remote="github"/>
</manifest>
The “vendor/google” show no error, but conflicts with the /e/ GitLab 
I removed this line, then I got the same messages as yours.
So I’m starting to think that the /e/ repository is kinda corrupt, or we are missing something …
You may want to open a case, so a /e/ dev could help.
By the way, my building script including custom manifest :
#!/bin/bash
docker pull registry.gitlab.e.foundation/e/os/docker-lineage-cicd:community
docker run \
-v "/srv/src:/srv/src" \
-v "/srv/zips:/srv/zips" \
-v "/srv/logs:/srv/logs" \
-v "/srv/ccache:/srv/ccache" \
-v "/srv/local_manifests:/srv/local_manifests" \
-e "BRANCH_NAME=v0.14.2-q" \
-e "DEVICE_LIST=walleye" \
-e "MINIMAL_APPS=true" \
-e "REPO=https://gitlab.e.foundation/e/os/releases.git" \
-e "CCACHE_SIZE=30G" \
-e "ANDROID_JACK_VM_ARGS=-Dfile.encoding=UTF-8 -XX:+TieredCompilation -Xmx20G" \
registry.gitlab.e.foundation/e/os/docker-lineage-cicd:community