Go1.14 is end-of-life by today as it will no longer be updated after Go1.16 was
released in Feb 2021:

        https://golang.org/doc/devel/release.html#go1.14
        https://golang.org/doc/devel/release.html#go1.16

Go1.15 is current oldstable - i.e. it is still supported and mature.