CI: Temporarily require grpc-1.4.1

[dwsupplee]

Until grpc/grpc#12123 is resolved we will need to rely on an older version of gRPC for builds to pass.

[stanley-cheung]

@dwsupplee Can you point me to a Travis CI build that failed before this?

[jdpedrie]

@stanley-cheung

PHP 7.0: https://travis-ci.org/jdpedrie/google-cloud-php/jobs/262745602#L2653
PHP 5.6: https://travis-ci.org/jdpedrie/google-cloud-php/jobs/262745609#L2813

[stanley-cheung]

@jdpedrie Thanks for the info.

Is it possible to run these tests outside of Travis manually, with gRPC 1.4.4 and make sure the php binary was not compiled with the --enable-maintainer-zts configure flag?

You can check whether your php binary have that flag by running php-config --configure-options. So far I have isolated the issue to this particular flag (which Travis enabled by default). I just want to see if I can confirm this with another person.

Thanks very much for the help to narrow this down!

[dwsupplee]

@stanley-cheung

I just received this error locally after upgrading gRPC 1.4.1 to 1.4.4 and running the tests:

E0809 18:17:17.843277000 140735272988672 sync_posix.c:60]              assertion failed: pthread_mutex_lock(mu) == 0

And the output of php-config --configure-options:

--prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --disable-dependency-tracking --sysconfdir=/private/etc --with-libdir=lib --enable-cli --with-iconv=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.Internal.sdk/usr --with-config-file-path=/etc --with-config-file-scan-dir=/Library/Server/Web/Config/php --with-libxml-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.Internal.sdk/usr --with-openssl=/usr/local/libressl/include

Strangely, I believe @jdpedrie has been running the tests locally using 1.4.4 on OSX as well without any errors.

Hope this helps! Let me know if there's anything else I can help provide.

Edit: Some additional info, this was running PHP 5.5.38