[intern/marionette] functional tests fail with Fx@63.0 and up

[jrgm]

https://tc-test.dev.lcip.org/viewLog.html?buildId=42352&buildTypeId=fxa_LatestFirefoxBetaTests&tab=buildLog#_focus=481

node ./tests/intern.js --suites=all --fxaAuthRoot=https://latest.dev.lcip.org/auth/v1 --fxaContentRoot=https://latest.dev.lcip.org/ --fxaOAuthApp=https://123done-latest.dev.lcip.org/ --fxaUntrustedOauthApp=https://321done-latest.dev.lcip.org/ --fxaEmailRoot=http://restmail.net --fxaProduction=true --firefoxBinary=/home/teamcity/firefox-channels/latest-beta/en-US/firefox/firefox-bin --useTeamCityReporter=true
[18:36:07]Creating Firefox profile...
[18:37:27]
SUITE ERROR
UnknownError: [POST http://localhost:4444/wd/hub/session / {"desiredCapabilities":{"moz:firefoxOptions":{"profile":"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","binary":"/home/teamcity/firefox-channels/latest-beta/en-US/firefox/firefox-bin"},"name":"intern","idle-timeout":60,"browserName":"firefox"}}] newSession
Build info: version: '3.12.0', revision: '7c6e0b3', time: '2018-05-08T15:15:08.936Z'
System info: host: '4ff33f138387', ip: '172.17.0.5', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.41-36.55.amzn1.x86_64', java.version: '1.8.0_144'
Driver info: driver.version: unknown
remote stacktrace: WebDriverError@chrome://marionette/content/error.js:178:5
UnknownCommandError@chrome://marionette/content/error.js:472:5
despatch@chrome://marionette/content/server.js:290:13
execute@chrome://marionette/content/server.js:271:11
onPacket/<@chrome://marionette/content/server.js:246:15
onPacket@chrome://marionette/content/server.js:245:8
_onJSONObjectReady/<@chrome://marionette/content/transport.js:490:9

at Suite.before <src/lib/executors/Node.ts:469:8>
at <src/lib/Suite.ts:388:19>
at runLifecycleMethod <src/lib/Suite.ts:355:10>
at before <src/lib/Suite.ts:458:10>
at Suite.run <src/lib/Suite.ts:477:6>
at <src/lib/executors/Node.ts:821:20>
at FunctionQueue.next <src/lib/executors/Node.ts:947:13>