Ruby process invoked from a lambda cannot find the gem

gistfile1.txt

bundler-1.9.9/lib/bundler.rb:122:in `setup'

2016-12-14T13:57:09.833Z	31533325-c205-11e6-98eb-f1a7b4768b8e		from /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/setup.rb:18:in `<top (required)>'
	from /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:128:in `require'
	from /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:128:in `rescue in require'
	from /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:39:in `require'

2016-12-14T13:57:09.915Z	31533325-c205-11e6-98eb-f1a7b4768b8e	{"errorMessage":"Command failed: /bin/sh -c ./hello
/var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/spec_set.rb:92:in `block in materialize': Could not find i18n-0.7.0 in any of the sources (Bundler::GemNotFound)
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/spec_set.rb:85:in `map!'
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/spec_set.rb:85:in `materialize'
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/definition.rb:132:in `specs'
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/definition.rb:177:in `specs_for'
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/definition.rb:166:in `requested_specs'
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/environment.rb:18:in `requested_specs'
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:13:in `setup'
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler.rb:122:in `setup'
\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/setup.rb:18:in `<top (required)>'
\tfrom /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:128:in `require'
\tfrom /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:128:in `rescue in require'
\tfrom /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:39:in `require'
","errorType":"Error","stackTrace":["/var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/spec_set.rb:92:in `block in materialize': Could not find i18n-0.7.0 in any of the sources (Bundler::GemNotFound)","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/spec_set.rb:85:in `map!'","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/spec_set.rb:85:in `materialize'","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/definition.rb:132:in `specs'","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/definition.rb:177:in `specs_for'","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/definition.rb:166:in `requested_specs'","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/environment.rb:18:in `requested_specs'","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/runtime.rb:13:in `setup'","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler.rb:122:in `setup'","\tfrom /var/task/lib/ruby/lib/ruby/gems/2.2.0/gems/bundler-1.9.9/lib/bundler/setup.rb:18:in `<top (required)>'","\tfrom /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:128:in `require'","\tfrom /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:128:in `rescue in require'","\tfrom /var/task/lib/ruby/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:39:in `require'","","ChildProcess.exithandler (child_process.js:213:12)","emitTwo (events.js:87:13)","ChildProcess.emit (events.js:172:7)","maybeClose (internal/child_process.js:821:16)","Socket.<anonymous> (internal/child_process.js:319:11)","emitOne (events.js:77:13)","Socket.emit (events.js:169:7)","Pipe._onclose (net.js:469:12)"]}
END RequestId: 31533325-c205-11e6-98eb-f1a7b4768b8e
REPORT RequestId: 31533325-c205-11e6-98eb-f1a7b4768b8e	Duration: 5428.28 ms	Billed Duration: 5500 ms