Update to latest capture and core. Switch off 2020.2 testing because it is not currently supported. Switch CI back to 2019.4.6f1 due to linux editor import hang.

.yamato/environments.yml

 
 upmci_registry: https://artifactory.prd.cds.internal.unity3d.com/artifactory/api/npm/upm-npm
 
+# sticking to 2019.4.6f1 for testing for now because Linux Editor fails to open PerceptionHDRP on 2019.4.8f1
+# see https://fogbugz.unity3d.com/default.asp?1273518_d68j5lb6eucglb84
-  - version: 2019.4.8f1
+  - version: 2019.4.6f1
-  - version: 2019.4.8f1
+  - version: 2019.4.6f1
-  - version: 2019.4.8f1
+  - version: 2019.4.6f1
-  - version: 2020.2.0a21
+#  - version: 2020.2.0a21
 
 publish_platforms:
   - name: win

TestProjects/PerceptionHDRP/Packages/manifest.json

     "com.unity.perception": "file:../../../com.unity.perception",
     "com.unity.render-pipelines.core": "7.3.1",
     "com.unity.render-pipelines.high-definition": "7.3.1",
-    "com.unity.simulation.capture": "0.0.10-preview.11",
-    "com.unity.simulation.core": "0.0.10-preview.18",
+    "com.unity.simulation.capture": "0.0.10-preview.12",
+    "com.unity.simulation.core": "0.0.10-preview.19",
     "com.unity.test-framework": "1.1.16",
     "com.unity.testtools.codecoverage": "0.2.2-preview",
     "com.unity.textmeshpro": "2.0.1",

TestProjects/PerceptionHDRP/Packages/packages-lock.json

         "com.unity.nuget.newtonsoft-json": "1.1.2",
         "com.unity.render-pipelines.core": "7.1.6",
         "com.unity.entities": "0.8.0-preview.8",
-        "com.unity.simulation.capture": "0.0.10-preview.11",
-        "com.unity.simulation.core": "0.0.10-preview.18"
+        "com.unity.simulation.capture": "0.0.10-preview.12",
+        "com.unity.simulation.core": "0.0.10-preview.19"
       }
     },
     "com.unity.platforms": {
       "url": "https://packages.unity.com"
     },
     "com.unity.simulation.capture": {
-      "version": "0.0.10-preview.11",
+      "version": "0.0.10-preview.12",
-        "com.unity.simulation.core": "0.0.10-preview.18"
+        "com.unity.simulation.core": "0.0.10-preview.19"
-      "version": "0.0.10-preview.18",
+      "version": "0.0.10-preview.19",
       "depth": 0,
       "source": "registry",
       "dependencies": {},

TestProjects/PerceptionURP/Packages/manifest.json

     "com.unity.package-validation-suite": "0.9.1-preview",
     "com.unity.perception": "file:../../../com.unity.perception",
     "com.unity.render-pipelines.universal": "7.3.1",
-    "com.unity.simulation.capture": "0.0.10-preview.11",
-    "com.unity.simulation.core": "0.0.10-preview.18",
+    "com.unity.simulation.capture": "0.0.10-preview.12",
+    "com.unity.simulation.core": "0.0.10-preview.19",
     "com.unity.test-framework": "1.1.16",
     "com.unity.textmeshpro": "2.0.1",
     "com.unity.timeline": "1.2.12",

TestProjects/PerceptionURP/Packages/packages-lock.json

         "com.unity.nuget.newtonsoft-json": "1.1.2",
         "com.unity.render-pipelines.core": "7.1.6",
         "com.unity.entities": "0.8.0-preview.8",
-        "com.unity.simulation.capture": "0.0.10-preview.11",
-        "com.unity.simulation.core": "0.0.10-preview.18"
+        "com.unity.simulation.capture": "0.0.10-preview.12",
+        "com.unity.simulation.core": "0.0.10-preview.19"
       }
     },
     "com.unity.platforms": {
       "url": "https://packages.unity.com"
     },
     "com.unity.simulation.capture": {
-      "version": "0.0.10-preview.11",
+      "version": "file:com.unity.simulation.capture",
-      "source": "registry",
+      "source": "embedded",
-        "com.unity.simulation.core": "0.0.10-preview.18"
-      },
-      "url": "https://packages.unity.com"
+        "com.unity.simulation.core": "0.0.10-preview.19"
+      }
-      "version": "0.0.10-preview.18",
+      "version": "0.0.10-preview.19",
       "depth": 0,
       "source": "registry",
       "dependencies": {},

com.unity.perception/Documentation~/index.md

 |[Perception Camera](PerceptionCamera.md)|Captures RGB images and ground truth from a [Camera](https://docs.unity3d.com/Manual/class-Camera.html)|
 |[DatasetCapture](DatasetCapture.md)|Ensures sensors are triggered at proper rates and accepts data for the JSON dataset|
 |[Randomization](Randomization/Index.md)|Integrate domain randomization principles into your simulation|
+
+## Known Issues
+
+* The Linux Editor 2019.4.7f1 and 2019.4.8f1 have been found to hang when importing HDRP-based perception projects. For Linux Editor support, use 2019.4.6f1 or 2020.1

com.unity.perception/package.json

     "com.unity.nuget.newtonsoft-json": "1.1.2",
     "com.unity.render-pipelines.core": "7.1.6",
     "com.unity.entities": "0.8.0-preview.8",
-    "com.unity.simulation.capture": "0.0.10-preview.11",
-    "com.unity.simulation.core": "0.0.10-preview.18"
+    "com.unity.simulation.capture": "0.0.10-preview.12",
+    "com.unity.simulation.core": "0.0.10-preview.19"
   },
   "description": "Tools for generating large-scale data sets for perception-based machine learning training and validation",
   "displayName": "Perception",