grpc failing in master
gitlab-ce master hasn't been synced to dev, so this was observed on a feature branch
grpc was recently updated: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11645
Debian 7 and Centos 6 are failing: https://dev.gitlab.org/gitlab/omnibus-gitlab/builds/1143413
Error:
LoadError: /lib64/libc.so.6: version `GLIBC_2.15' not found (required by /opt/gitlab/embedded/lib/ruby/gems/2.3.0/gems/grpc-1.3.4-x86_64-linux/src/ruby/lib/grpc/2.3/grpc_c.so) - /opt/gitlab/embedded/lib/ruby/gems/2.3.0/gems/grpc-1.3.4-x86_64-linux/src/ruby/lib/grpc/2.3/grpc_c.so
/var/cache/omnibus/src/gitlab-rails/config/application.rb:5:in `<top (required)>'
/var/cache/omnibus/src/gitlab-rails/Rakefile:5:in `require'
/var/cache/omnibus/src/gitlab-rails/Rakefile:5:in `<top (required)>'
/opt/gitlab/embedded/bin/bundle:22:in `load'
/opt/gitlab/embedded/bin/bundle:22:in `<main>'
(See full trace by running task with --trace)