Travis CI has seemed to be moved.
Issue Description
I created an pull request #343 and waiting for CI, but check has not begun. Travis CI says
Since June 15th, 2021, the building on travis-ci.org is ceased. Please use travis-ci.com from now on.

@AliSoftware @jeffctown Could you check it?
Unfortunately i haven’t been approved to work on open source at my new job yet. I won’t be able to fix this soon, sorry.
Sent from my iPhone
On Oct 8, 2021, at 4:59 AM, Takuhiro Muta @.***> wrote:
@AliSoftware @jeffctown Could you check it?
— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or unsubscribe.
Hi, I would like to kindly ask for the status on this topic. As far as CI is broken, all PR would remain blocked, am I right? Also, I would like to know what did you initially planned on this, move to travis-ci.com or migrate to GitHub? Regards