I haven't looked closer at the logs
https://build.alpinelinux.org/buildlogs/build-edge-x86_64/community/jupyter-server/jupyter-server-2.7.3-r0.log
https://build.alpinelinux.org/buildlogs/build-edge-x86/community/jupyter-server/jupyter-server-2.7.3-r0.log
Should some tests just be disabled?