On Saturday, 16 November 2019 at 09:07:45 UTC, Petar Kirov
[ZombineDev] wrote:
[snip]
Most likely the reason is parallelism. Every CI service offers
a limited amount of agents that can run in parallel, which
limits the number of test matrix combinations that you can run
in a reasonable amount of time. For example, many of the major
D projects are tested across different OSes and several
versions of D compilers. Additionally some CIs are faster than
others. In my experience CircleCI is faster than TravisCI by a
large margin.
Thank you for the very insightful answer.