Fetching: bundler-2.0.1.gem (100%)
NotImplementedError: flock unsupported or native support failed to load; see http://wiki.jruby.org/Native-Libraries
flock at org/jruby/RubyFile.java:317
write_binary at /opt/jruby/lib/ruby/stdlib/rubygems.rb:897
open at org/jruby/RubyIO.java:1154
open at org/jruby/RubyKernel.java:317
write_binary at /opt/jruby/lib/ruby/stdlib/rubygems.rb:895
cache_update_path at /opt/jruby/lib/ruby/stdlib/rubygems/remote_fetcher.rb:334
download at /opt/jruby/lib/ruby/stdlib/rubygems/remote_fetcher.rb:188
download at /opt/jruby/lib/ruby/stdlib/rubygems/source.rb:215
install at /opt/jruby/lib/ruby/stdlib/rubygems/resolver/specification.rb:91
install at /opt/jruby/lib/ruby/stdlib/rubygems/request_set.rb:168
each at org/jruby/RubyArray.java:1792
install at /opt/jruby/lib/ruby/stdlib/rubygems/request_set.rb:156
install_gem at /opt/jruby/lib/ruby/stdlib/rubygems/commands/install_command.rb:205
install_gems at /opt/jruby/lib/ruby/stdlib/rubygems/commands/install_command.rb:255
each at org/jruby/RubyArray.java:1792
install_gems at /opt/jruby/lib/ruby/stdlib/rubygems/commands/install_command.rb:251
execute at /opt/jruby/lib/ruby/stdlib/rubygems/commands/install_command.rb:158
invoke_with_build_args at /opt/jruby/lib/ruby/stdlib/rubygems/command.rb:313
process_args at /opt/jruby/lib/ruby/stdlib/rubygems/command_manager.rb:171
run at /opt/jruby/lib/ruby/stdlib/rubygems/command_manager.rb:141
run at /opt/jruby/lib/ruby/stdlib/rubygems/gem_runner.rb:59

at /opt/jruby/bin/jgem:21
load at org/jruby/RubyKernel.java:1007
at /opt/jruby/bin/gem:4
�[0mRemoving intermediate container 0af2cfff5bfb
The command '/bin/sh -c gem install bundler rake net-telnet xmlrpc' returned a non-zero code: 1