nightly zip corrupted

Nightly zip is corrupted

Summary

Nightly zips for athene are corrupted since 2018-09-29, so OTA update as well as manual installation fail.

Output of unzip -t e-0.1-201809301534-nightly-athene.zip

Archive:  e-0.1-201809301534-nightly-athene.zip
signed by SignApk
testing: system.patch.dat        bad extra-field entry:
EF block length (0 bytes) invalid (< 4)
testing: META-INF/com/android/metadata   OK
testing: META-INF/com/google/android/update-binary   OK
testing: META-INF/com/google/android/updater-script   OK
testing: META-INF/org/lineageos/releasekey   OK
testing: boot.img                 OK
testing: file_contexts.bin        OK
testing: install/bin/backuptool.functions   OK
testing: install/bin/backuptool.sh   OK
testing: install/bin/otasigcheck.sh   OK
testing: system.new.dat           OK
testing: system.transfer.list     OK
testing: system/build.prop        OK
testing: META-INF/com/android/otacert   OK
testing: META-INF/MANIFEST.MF     OK
testing: META-INF/CERT.SF         OK
testing: META-INF/CERT.RSA        OK
At least one error was detected in e-0.1-201809301534-nightly-athene.zip

Possible fixes

On my private build system (based on /e/ container) the build is ok and the zips are fine. So must be a problem with the current build server.