Filed by: btara [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=328185704&repo=mozilla-central
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/fpNqwdCYR7mhFXoEmhuO9Q/runs/0/artifacts/public/logs/live_backing.log

[task 2021-01-29T10:38:36.265Z] 10:38:36     INFO - TEST-START | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html
[task 2021-01-29T10:38:36.688Z] 10:38:36     INFO - GECKO(1840) | [Child 1911, Main Thread] WARNING: IPC message discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:512
[task 2021-01-29T10:38:36.688Z] 10:38:36     INFO - GECKO(1840) | [Child 1911, Main Thread] WARNING: Error sending reply: file /builds/worker/workspace/obj-build/ipc/ipdl/PDocumentChannelChild.cpp:288
[task 2021-01-29T10:38:36.829Z] 10:38:36     INFO - GECKO(1840) | [Parent 1840, Compositor] WARNING: robust_buffer_access_behavior marked as unsupported: file /builds/worker/checkouts/gecko/gfx/gl/GLContextFeatures.cpp:628
[task 2021-01-29T10:38:36.830Z] 10:38:36     INFO - GECKO(1840) | [Parent 1840, Compositor] WARNING: Robustness supported, strategy is not LOSE_CONTEXT_ON_RESET!: file /builds/worker/checkouts/gecko/gfx/gl/GLContext.cpp:975
[task 2021-01-29T10:38:36.830Z] 10:38:36     INFO - GECKO(1840) | [Parent 1840, Compositor] WARNING: robustness marked as unsupported: file /builds/worker/checkouts/gecko/gfx/gl/GLContextFeatures.cpp:628
[task 2021-01-29T10:38:36.891Z] 10:38:36     INFO - GECKO(1840) | JavaScript warning: , line 0: WebGL warning: uniform setter: Uniform's `type` requires uniform setter of type INT/NONE/NONE.
[task 2021-01-29T10:38:36.892Z] 10:38:36     INFO - GECKO(1840) | JavaScript warning: , line 0: WebGL warning: uniform setter: Uniform's `type` requires uniform setter of type INT/NONE/NONE.
[task 2021-01-29T10:38:36.980Z] 10:38:36     INFO - GECKO(1840) | [Parent 1840, Compositor] WARNING: Failed to make an ideal SurfaceFactory.: file /builds/worker/checkouts/gecko/dom/canvas/WebGLContext.cpp:937
[task 2021-01-29T10:45:57.805Z] 10:45:57     INFO - Buffered messages logged at 10:38:36
[task 2021-01-29T10:46:00.004Z] 10:45:58     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | A valid string reason is expected 
[task 2021-01-29T10:46:02.127Z] 10:46:01     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | Reason cannot be empty 
[task 2021-01-29T10:46:04.661Z] 10:46:04     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | getError was expected value: NO_ERROR : uniform1i can set a sampler uniform 
[task 2021-01-29T10:46:07.462Z] 10:46:06     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | getError was expected value: NO_ERROR : uniform1iv can set a sampler uniform 
[task 2021-01-29T10:46:10.617Z] 10:46:09     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | getError was expected value: INVALID_OPERATION : uniform1f returns INVALID_OPERATION if attempting to set a sampler uniform 
[task 2021-01-29T10:46:13.248Z] 10:46:12     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | getError was expected value: INVALID_OPERATION : uniform1fv returns INVALID_OPERATION if attempting to set a sampler uniform 
[task 2021-01-29T10:46:15.827Z] 10:46:15     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | uniform1i works for any valid texture unit 
[task 2021-01-29T10:46:18.626Z] 10:46:17     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | uniform1iv works for any valid texture unit 
[task 2021-01-29T10:46:22.162Z] 10:46:21     INFO - Buffered messages logged at 10:39:01
[task 2021-01-29T10:46:24.198Z] 10:46:23     INFO - TEST-PASS | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | uniform1i generates INVALID_VALUE for invalid texture units 0x80 to 0x1080 
[task 2021-01-29T10:46:27.053Z] 10:46:26     INFO - Buffered messages finished
[task 2021-01-29T10:46:29.515Z] 10:46:28    ERROR - TEST-UNEXPECTED-TIMEOUT | dom/canvas/test/webgl-conf/generated/test_conformance__uniforms__uniform-samplers-test.html | application timed out after 370 seconds with no output
[task 2021-01-29T10:46:31.485Z] 10:46:30    ERROR - Force-terminating active process(es).```