The win-client deploy test started failing with Juju r2424. This revision just changed the version 1.17.6. We saw a similar failure when the version number changed and a tools-metadata-url was wrong. As streams.canonical.com is not updated yet, window's clients may not work until streams.canonical.com is updated. The tools do appear to be coming from aws.
Adding apt repository: deb http://ubuntu-cloud.archive.canonical.com/ubuntu precise-updates/cloud-tools main
Running apt-get update
Running apt-get upgrade
Installing package: git
Installing package: cpu-checker
Installing package: bridge-utils
Installing package: rsyslog-gnutls
Installing package: --target-release 'precise-updates/cloud-tools' 'mongodb-server'
Fetching tools: curl -sSfw 'tools from %{url_effective} downloaded: HTTP %{http_code}; time %{time_total}s; size %{size_download} bytes; speed %{speed_download} bytes/s ' -o $bin/tools.tar.gz 'https://juju-dist.s3.amazonaws.com/testing/tools/releases/juju-1.17.6-precise-amd64.tgz'
Starting MongoDB server (juju-db)
Bootstrapping Juju machine agent
2014-03-16 18:44:23 ERROR juju.provider.common bootstrap.go:127 bootstrap failed: Process exited with: 1. Reason was: ()
Stopping instance...
Streams. canonical. com is updated with 1.17.5, but the win-client bootstrap and deploy test fails.