My private build farm is based in the UK (BST timezone) and publishes to a
public server in the US (UTC). The build times are correct on the local farm,
but when published to the public server the timezone information is absent so
for the first hour (BST is UTC+1 hour as of filling this bug) the last
built/failed time displays a number of milliseconds, including sometimes
negative values, then after the hour is 1 hour behind.