It takes a number of minutes for the failure to time out.
===> Returning to build of cmake-3.10.2 ===> cmake-3.10.2 depends on: ninja->=1.5.1 -> ninja-1.8.2 ===> cmake-3.10.2 depends on: py-sphinx->=1.4 - not found ===> Verifying install for py-sphinx->=1.4 in textproc/py-sphinx ===> Checking files for py-sphinx-1.4.8p0 >> Fetch https://pypi.io/packages/source/S/Sphinx/Sphinx-1.4.8.tar.gz ftp: SSL write error: handshake failed: Operation timed out >> Fetch https://ftp.openbsd.org/pub/OpenBSD/distfiles//Sphinx-1.4.8.tar.gz Sphinx-1.4.8.tar.gz 100% |******************************************************| 4389 KB 00:02 >> (SHA256) Sphinx-1.4.8.tar.gz: OK ===> py-sphinx-1.4.8p0 depends on: py-babel-* - not found ===> Verifying install for py-babel-* in devel/py-babel ===> Checking files for py-babel-2.4.0 >> Fetch https://pypi.io/packages/source/B/Babel/Babel-2.4.0.tar.gz ftp: SSL write error: handshake failed: Operation timed out >> Fetch https://ftp.openbsd.org/pub/OpenBSD/distfiles//Babel-2.4.0.tar.gz Babel-2.4.0.tar.gz 100% |*******************************************************| 6452 KB 00:04 >> (SHA256) Babel-2.4.0.tar.gz: OK