Build Farmer Handoff 2018-11-29

[mjcarroll]

Outgoing: @mjcarroll from #148
Incoming: @jacobperron

• nightly_xenial_release should be fixed by Exclude python3-lark-parser from Xenial ci#225, which was merged this morning.

Known flaky tests and recurring failures

• rviz tests are failing on aarch64 linux repeated (original contributors aware) rviz tests failing on aarch64 linux repeated #144
• composition test flakiness increase (to be investigated) Composition test flakiness increase #118
• pendulum tests fail on aarch64 opensplice Linux Opensplice pendulum tests fail on aarch64 #133
• launch testing failures on linux repeated Launch tests on Linux fail on repeated #126
• Windows repeated test_timer_callbacks is flaky Windows repeated test_timer_number_callbacks100hertz mostly fails #139
• Windows Opensplice test_graph test is flaky Windows Opensplice test_graph is flaky #138
• Services/parameter tests with Fast-RTPS are flaky on aarch64 Linux aarch64 test_services with Fast-RTPS sometimes times out #136

Outstanding buildfarmer tasks

• Periodic upgrades on Mac and Windows
• Profile memory usage of bridge compilation job building the bridge requires a lot of memory #106 (failures currently resolved by increasing instance size)
• Continued test failures on nightly_linux_extra_rmw_release #150 Continues to cause warnings on _extra_rmw_release builds