deployer failed to detect a hook error

I have a hook error in my deploy, seen by juju status:
$ juju status --format=tabular
[Services]
NAME STATUS EXPOSED CHARM
haproxy unknown false cs:trusty/haproxy-19
landscape-server error false local:xenial/landscape-server-0
postgresql active false cs:trusty/postgresql-41
rabbitmq-server active false cs:xenial/rabbitmq-server-0

[Units]
ID WORKLOAD-STATE AGENT-STATE VERSION MACHINE PORTS PUBLIC-ADDRESS MESSAGE
haproxy/0 unknown idle 1.25.5 1 54.157.185.1
landscape-server/0 error idle 1.25.5 2 54.80.142.236 hook failed: "install"
postgresql/0 active idle 1.25.5 3 5432/tcp 54.157.228.249 Live master
rabbitmq-server/0 active idle 1.25.5 4 5672/tcp 107.20.88.38 Unit is ready

[Machines]
ID STATE VERSION DNS INS-ID SERIES HARDWARE
0 started 1.25.5 54.163.40.4 i-02fa8a85 xenial arch=amd64 cpu-cores=1 cpu-power=300 mem=3840M root-disk=8192M availability-zone=us-east-1a
1 started 1.25.5 54.157.185.1 i-14699cec trusty arch=amd64 cpu-cores=1 cpu-power=300 mem=3840M root-disk=8192M availability-zone=us-east-1c
2 started 1.25.5 54.80.142.236 i-e497627e xenial arch=amd64 cpu-cores=1 cpu-power=300 mem=3840M root-disk=8192M availability-zone=us-east-1d
3 started 1.25.5 54.157.228.249 i-d3c4be4e trusty arch=amd64 cpu-cores=1 cpu-power=300 mem=3840M root-disk=8192M availability-zone=us-east-1e
4 started 1.25.5 107.20.88.38 i-c8e3934f xenial arch=amd64 cpu-cores=1 cpu-power=300 mem=3840M root-disk=8192M availability-zone=us-east-1a

juju-deployer is still trying to deploy it, though, and happily waiting for "stuff" to happen:
$ grep landscape-server deployer-output.txt
2016-05-04 17:37:39 [DEBUG] deployer.charm: Branching charm lp:landscape-charm/trunk @ xenial/landscape-server
2016-05-04 17:38:17 [INFO] deployer.import: Deploying service landscape-server using local:xenial/landscape-server
2016-05-04 17:39:47 [DEBUG] deployer.import: Service 'landscape-server' does not need any more units added.
2016-05-04 17:41:45 [DEBUG] deployer.env: Delta unit: landscape-server/0 change:pending
2016-05-04 17:41:50 [DEBUG] deployer.env: Delta service: landscape-server change:{u'Err': None, u'Since': u'2016-05-04T20:41:46.354133363Z', u'Current': u'error', u'Version': u'', u'Message': u'hook failed: "install"', u'Data': {u'hook': u'install'}}
2016-05-04 17:41:50 [DEBUG] deployer.env: Delta unit: landscape-server/0 change:pending
2016-05-04 17:41:50 [DEBUG] deployer.env: Delta unit: landscape-server/0 change:pending

Note that it did receive the error, but it didn't stop the deployment. It used to stop.

This is my deployer commnd line:
juju-deployer -Wdv -c xenial-landscape-scalable.yaml -w 120 -u

Full output (so far) attached.