Arvados

gem json 1.7.7 doesn't compile in distros nowadays . If this is not a hard dependency for arvados, will be good to have 1.8.x or even better 2.x version:

# rvm 2.3.3 do gem install json -v 1.7.7 
Building native extensions.  This could take a while...
ERROR:  Error installing json:
        ERROR: Failed to build gem native extension.

    current directory: /usr/local/rvm/gems/ruby-2.3.3/gems/json-1.7.7/ext/json/ext/generator
/usr/local/rvm/rubies/ruby-2.3.3/bin/ruby -r ./siteconf20170329-31235-1rng2qn.rb extconf.rb
creating Makefile

current directory: /usr/local/rvm/gems/ruby-2.3.3/gems/json-1.7.7/ext/json/ext/generator
make "DESTDIR=" clean

current directory: /usr/local/rvm/gems/ruby-2.3.3/gems/json-1.7.7/ext/json/ext/generator
make "DESTDIR=" 
compiling generator.c
In file included from generator.c:1:0:
../fbuffer/fbuffer.h: In function 'fbuffer_to_s':
../fbuffer/fbuffer.h:175:47: error: macro "rb_str_new" requires 2 arguments, but only 1 given
     VALUE result = rb_str_new(FBUFFER_PAIR(fb));
                                               ^
../fbuffer/fbuffer.h:175:20: warning: initialization makes integer from pointer without a cast
     VALUE result = rb_str_new(FBUFFER_PAIR(fb));
                    ^
Makefile:238: recipe for target 'generator.o' failed
make: *** [generator.o] Error 1

make failed, exit code 2

Gem files will remain installed in /usr/local/rvm/gems/ruby-2.3.3/gems/json-1.7.7 for inspection.
Results logged to /usr/local/rvm/gems/ruby-2.3.3/extensions/x86_64-linux/2.3.0/json-1.7.7/gem_make.out