Bug 1505058 - Promote rusttests to Tier 1 in CI. r=ted

Differential Revision: https://phabricator.services.mozilla.com/D11049

--HG--
extra : rebase_source : 4d12001dd98ba642f624dc4c266e5d2ae7e95ff4

taskcluster/ci/build/linux.yml

@@ -415,7 +415,7 @@ linux-rusttests/opt:
     treeherder:
         platform: linux32/opt
         symbol: BR
-        tier: 2
+        tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         docker-image: {in-tree: debian7-i386-build}
@@ -452,7 +452,7 @@ linux-rusttests/debug:
     treeherder:
         platform: linux32/debug
         symbol: BR
-        tier: 2
+        tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         docker-image: {in-tree: debian7-i386-build}
@@ -850,7 +850,7 @@ linux64-rusttests/opt:
     treeherder:
         platform: linux64/opt
         symbol: BR
-        tier: 2
+        tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         max-run-time: 5400
@@ -886,7 +886,7 @@ linux64-rusttests/debug:
     treeherder:
         platform: linux64/debug
         symbol: BR
-        tier: 2
+        tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         max-run-time: 5400

taskcluster/ci/build/windows.yml

@@ -500,7 +500,7 @@ win32-rusttests/opt:
     treeherder:
         platform: windows2012-32/opt
         symbol: BR
-        tier: 2
+        tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-win2012
     worker:
         max-run-time: 7200
@@ -535,7 +535,7 @@ win64-rusttests/opt:
     treeherder:
         platform: windows2012-64/opt
         symbol: BR
-        tier: 2
+        tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-win2012
     worker:
         max-run-time: 7200