I wrote:
> 5)
> OpenBSD/i386:
> NetBSD/sparc:
> IRIX n32:
> FAIL: timestamp
> 
> Find attached the test-suite.log of each platform.

Since Paul asked about more details on this one in
https://lists.gnu.org/archive/html/bug-gzip/2017-11/msg00005.html
here are more details (on OpenBSD/i386):

$ make check TESTS=timestamp VERBOSE=yes > timestamp.x 2>&1

Find it attached.