Quite a few of my builds are failing to fetch libpulse0 which is in bionic repos:
Err:37 http://azure.archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpulse0 amd64 1:11.1-1ubuntu7.4
404 Not Found [IP: 52.177.174.250 80]
Get:38 http://azure.archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpulse-mainloop-glib0 amd64 1:11.1-1ubuntu7.4 [22.1 kB]
Get:39 http://azure.archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpulse-dev amd64 1:11.1-1ubuntu7.4 [81.5 kB]
Get:40 http://azure.archive.ubuntu.com/ubuntu bionic-updates/main amd64 libxcb-xkb1 amd64 1.13-2~ubuntu18.04 [30.1 kB]
Get:41 http://azure.archive.ubuntu.com/ubuntu bionic-updates/main amd64 libxkbcommon-x11-0 amd64 0.8.2-1~ubuntu18.04.1 [13.4 kB]
Get:42 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 libzip-dev amd64 1.5.1-4+ubuntu18.04.1+deb.sury.org+2 [158 kB]
Fetched 2364 kB in 0s (5153 kB/s)
E: Failed to fetch http://azure.archive.ubuntu.com/ubuntu/pool/main/p/pulseaudio/libpulse0_11.1-1ubuntu7.4_amd64.deb 404 Not Found [IP: 52.177.174.250 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
##[error]Process completed with exit code 100.
Is the apt repository corrupted?