panic setting up 1.18.1 to upgrade to 1.20-beta1

All the upgrade tests failed
    http://juju-ci.vapour.ws:8080/

The failure happens bootstrapping 1.18, long before the test deploys a stable ant attempts an upgrade. The likely cause is the 1.20-beta1 binaries are in the path, but I don't think this really happen until after the stack is deployed.

This may be a case where 1.18.1 is reading the simple streams metadata and finds 1.20-beta1 an unacceptable version.

juju --show-log bootstrap -e hp-upgrade --constraints mem=4G
2014-05-28 04:10:19 INFO juju.cmd supercommand.go:297 running juju-1.18.1-precise-amd64 [gc]
2014-05-28 04:10:19 INFO juju.provider.openstack provider.go:202 opening environment "hp-upgrade"
2014-05-28 04:10:21 INFO juju.environs.bootstrap bootstrap.go:46 bootstrapping environment "hp-upgrade"
2014-05-28 04:10:21 INFO juju.environs.tools tools.go:86 reading tools with major.minor version 1.18
2014-05-28 04:10:21 INFO juju.environs.tools tools.go:94 filtering tools by version: 1.18.1
2014-05-28 04:10:21 INFO juju.environs.tools tools.go:97 filtering tools by series: precise
2014-05-28 04:10:21 INFO juju.utils http.go:55 hostname SSL verification enabled
2014-05-28 04:10:22 INFO juju.utils http.go:55 hostname SSL verification enabled
2014-05-28 04:10:22 INFO juju.utils http.go:55 hostname SSL verification enabled
2014-05-28 04:10:22 INFO juju.utils http.go:55 hostname SSL verification enabled
panic: invalid version "1.20-beta1"

goroutine 1 [running]:
launchpad.net/juju-core/version.MustParse(0xc20055a010, 0xa, 0xc20049b460, 0xc20049b460, 0xc2005ca101, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/version/version.go:151 +0x7f
launchpad.net/juju-core/environs/tools.appendMatchingTools(0xc2004b2b00, 0xc200495d20, 0xc2001b3cf0, 0x1, 0x1, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/tools/simplestreams.go:224 +0x30e
launchpad.net/juju-core/environs/simplestreams.GetLatestMetadata(0xc2005d3c80, 0xc200495de0, 0xc20049b460, 0xc2004b2b00, 0xc200495d20, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/simplestreams/simplestreams.go:1023 +0x75f
launchpad.net/juju-core/environs/simplestreams.(*IndexReference).getLatestMetadataWithFormat(0xc2005a3630, 0xc200495de0, 0xc20049b460, 0xcfcc90, 0xc, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/simplestreams/simplestreams.go:986 +0x193
launchpad.net/juju-core/environs/simplestreams.getMaybeSignedMetadata(0xc2004b2b00, 0xc200495d20, 0xd53890, 0x10, 0xc200495de0, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/simplestreams/simplestreams.go:469 +0x5b3
launchpad.net/juju-core/environs/simplestreams.GetMetadata(0xc2004b2bc0, 0x3, 0x4, 0xd53890, 0x10, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/simplestreams/simplestreams.go:429 +0x23c
launchpad.net/juju-core/environs/tools.Fetch(0xc2004b2bc0, 0x3, 0x4, 0xd53890, 0x10, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/tools/simplestreams.go:182 +0x168
launchpad.net/juju-core/environs/tools.FindToolsForCloud(0xc2004b2bc0, 0x3, 0x4, 0xc200435080, 0x13, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/tools/tools.go:121 +0x15d
launchpad.net/juju-core/environs/tools.FindTools(0xc200495c30, 0xc200278b00, 0x1, 0x12, 0x0, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/tools/tools.go:106 +0x57a
launchpad.net/juju-core/environs/tools.FindBootstrapTools(0xc200495c30, 0xc200278b00, 0xc2004a1b00, 0x0, 0xc200000b90, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/tools/tools.go:183 +0x1a7
launchpad.net/juju-core/environs/bootstrap.EnsureToolsAvailability(0xc200426900, 0xc200271000, 0xc2005725a0, 0xc200278b00, 0xc200000b90, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/bootstrap/synctools.go:168 +0x2ad
launchpad.net/juju-core/provider/common.EnsureBootstrapTools(0xc200426900, 0xc200271000, 0xc2005725a0, 0xc200278b00, 0xc200000b90, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/provider/common/bootstrap.go:407 +0x72
launchpad.net/juju-core/provider/common.Bootstrap(0xc200426900, 0xc200271000, 0xc2005725a0, 0xc200278b00, 0x0, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/provider/common/bootstrap.go:45 +0x16c
launchpad.net/juju-core/provider/openstack.(*environ).Bootstrap(0xc200278b00, 0xc200426900, 0xc200271000, 0x0, 0x0, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/provider/openstack/provider.go:531 +0xac
launchpad.net/juju-core/environs/bootstrap.Bootstrap(0xc200426900, 0xc200271000, 0xc2005725a0, 0xc200278b00, 0x0, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/environs/bootstrap/bootstrap.go:47 +0x59f
main.(*BootstrapCommand).Run(0xc200275e00, 0xc200271000, 0x0, 0x0)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/juju/bootstrap.go:143 +0x65f
main.envCmdWrapper.Run(0xc2002778a0, 0xc200275e00, 0xc200271000, 0xc2001ad238, 0x2, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/juju/main.go:158 +0x49
main.(*envCmdWrapper).Run(0xc2001f4750, 0xc200271000, 0x14, 0xc2001ad238)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/juju/addmachine.go:0 +0x8e
launchpad.net/juju-core/cmd.(*SuperCommand).Run(0xc200275d80, 0xc200271000, 0xc200271000, 0x0)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/supercommand.go:298 +0x3d6
launchpad.net/juju-core/cmd.Main(0xc200280e10, 0xc200275d80, 0xc200271000, 0xc200190010, 0x6, ...)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/cmd.go:244 +0x286
main.Main(0xc200190000, 0x7, 0x7)
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/juju/main.go:131 +0x5015
main.main()
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/juju/main.go:173 +0x42

goroutine 2 [syscall]:

goroutine 4 [syscall]:
os/signal.loop()
 /usr/lib/go/src/pkg/os/signal/signal_unix.go:21 +0x1c
created by os/signal.init��1
 /usr/lib/go/src/pkg/os/signal/signal_unix.go:27 +0x2f

goroutine 30 [chan receive]:
net/http.(*persistConn).readLoop(0xc2001cd100)
 /usr/lib/go/src/pkg/net/http/transport.go:761 +0x64b
created by net/http.(*Transport).dialConn
 /usr/lib/go/src/pkg/net/http/transport.go:511 +0x574

goroutine 15 [runnable]:
main.func��002()
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/juju/bootstrap.go:111 +0x43
created by main.(*BootstrapCommand).Run
 /build/buildd/juju-core-1.18.1/src/launchpad.net/juju-core/cmd/juju/bootstrap.go:114 +0x250

goroutine 31 [select]:
net/http.(*persistConn).writeLoop(0xc2001cd100)
 /usr/lib/go/src/pkg/net/http/transport.go:774 +0x26f
created by net/http.(*Transport).dialConn
 /usr/lib/go/src/pkg/net/http/transport.go:512 +0x58b

goroutine 37 [select]:
net/http.(*persistConn).writeLoop(0xc2004e9500)
 /usr/lib/go/src/pkg/net/http/transport.go:774 +0x26f
created by net/http.(*Transport).dialConn
 /usr/lib/go/src/pkg/net/http/transport.go:512 +0x58b

goroutine 36 [chan receive]:
net/http.(*persistConn).readLoop(0xc2004e9500)
 /usr/lib/go/src/pkg/net/http/transport.go:761 +0x64b
created by net/http.(*Transport).dialConn
 /usr/lib/go/src/pkg/net/http/transport.go:511 +0x574

goroutine 39 [runnable]:
net/http.(*persistConn).readLoop(0xc2004e9d00)
 /usr/lib/go/src/pkg/net/http/transport.go:761 +0x64b
created by net/http.(*Transport).dialConn
 /usr/lib/go/src/pkg/net/http/transport.go:511 +0x574

goroutine 40 [select]:
net/http.(*persistConn).writeLoop(0xc2004e9d00)
 /usr/lib/go/src/pkg/net/http/transport.go:774 +0x26f
created by net/http.(*Transport).dialConn
 /usr/lib/go/src/pkg/net/http/transport.go:512 +0x58b
Traceback (most recent call last):
  File "/var/lib/jenkins/juju-ci-tools/deploy_job.py", line 4, in <module>
    deploy_job()
  File "/mnt/jenkinshome/juju-ci-tools/deploy_stack.py", line 250, in deploy_job
    bootstrap_host, machines, log_dir, debug)
  File "/mnt/jenkinshome/juju-ci-tools/deploy_stack.py", line 293, in _deploy_job
    bootstrap_from_env(juju_home, env)
  File "/mnt/jenkinshome/juju-ci-tools/deploy_stack.py", line 228, in bootstrap_from_env
    env.bootstrap()
  File "/mnt/jenkinshome/juju-ci-tools/jujupy.py", line 236, in bootstrap
    return self.client.bootstrap(self)
  File "/mnt/jenkinshome/juju-ci-tools/jujupy.py", line 110, in bootstrap
    environment.needs_sudo())
  File "/mnt/jenkinshome/juju-ci-tools/jujupy.py", line 160, in juju
    return subprocess.check_call(args)
  File "/usr/lib/python2.7/subprocess.py", line 511, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '('juju', '--show-log', 'bootstrap', '-e', 'hp-upgrade', '--constraints', 'mem=4G')' returned non-zero exit status 2