Error: invalid byte sequence in US-ASCII

I setup a node on a fresh LXC-Container using only the classes defined in common.yaml. But it fails when deploying grmlzsh. Uncommenting the grlmzsh class works fine.

• Login to srv18.ffnw.de
• execute lxc-attach -n runner02
• execute puppet agent --test --trace to check the issue.

Generating locales (this might take a while)...
  de_DE.UTF-8... done
  en_US.ISO-8859-15... done
  en_US.UTF-8... done
Generation complete.
root@runner02:~# puppet agent --test --trace
Info: Using configured environment 'master'
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Loading facts
Info: Caching catalog for runner02.ffnw.de
Info: Applying configuration version '1456260167'
Error: invalid byte sequence in US-ASCII
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/colors.rb:92:in `gsub'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/colors.rb:92:in `console_color'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/colors.rb:82:in `colorize'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log/destinations.rb:170:in `handle'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log.rb:174:in `block in newmessage'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log.rb:173:in `each'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log.rb:173:in `newmessage'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log.rb:266:in `initialize'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log.rb:85:in `new'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log.rb:85:in `create'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/logging.rb:9:in `send_log'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/logging.rb:18:in `block (2 levels) in <module:Logging>'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/type/file/content.rb:104:in `block in insync?'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/type/file/content.rb:167:in `write_temporarily'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/type/file/content.rb:103:in `insync?'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/property.rb:259:in `safe_insync?'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:128:in `sync_if_needed'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:89:in `block in perform_changes'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:88:in `each'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:88:in `perform_changes'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:20:in `evaluate'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:207:in `apply'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:223:in `eval_resource'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:150:in `call'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:150:in `block (2 levels) in evaluate'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:292:in `block in thinmark'
/opt/puppetlabs/puppet/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:291:in `thinmark'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:150:in `block in evaluate'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/graph/relationship_graph.rb:118:in `traverse'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:141:in `evaluate'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/resource/catalog.rb:202:in `block in apply'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log.rb:153:in `with_destination'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/report.rb:107:in `as_logging_destination'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/resource/catalog.rb:201:in `apply'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:119:in `block in apply_catalog'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:129:in `block in benchmark'
/opt/puppetlabs/puppet/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:128:in `benchmark'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:118:in `apply_catalog'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:232:in `run_internal'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:134:in `block in run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/context.rb:65:in `override'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet.rb:240:in `override'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:133:in `run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:45:in `block (4 levels) in run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent/locker.rb:21:in `lock'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:45:in `block (3 levels) in run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:98:in `with_client'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:42:in `block (2 levels) in run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:65:in `run_in_fork'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:41:in `block in run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:179:in `call'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:179:in `controlled_run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/agent.rb:39:in `run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/agent.rb:353:in `onetime'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/agent.rb:331:in `run_command'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:344:in `block in run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:446:in `exit_on_fail'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:344:in `run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/command_line.rb:128:in `run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/command_line.rb:72:in `execute'
/opt/puppetlabs/puppet/bin/puppet:5:in `<main>'
Error: /Stage[main]/Grmlzsh::Config/File[/etc/zsh/zshrc]/content: change from {md5}d0845f6413ef57c329b7a9ad3bcacc69 to {md5}50623945ca5c3001bcd19a7aae120f13 failed: invalid byte sequence in US-ASCII
Notice: Applied catalog in 0.37 seconds