For example, https://build.chromium.org/p/chromium.gpu.fyi/builders/Android%20Release%20%28NVIDIA%20Shield%29/builds/162.

[43/850] gpu_tests.webgl_conformance_integration_test.WebGLConformanceIntegrationTest.WebglConformance_conformance_context_context_eviction_with_garbage_collection failed unexpectedly 13.7684s:
  
  Traceback (most recent call last):
    _RunGpuTest at content/test/gpu/gpu_tests/gpu_integration_test.py:73
      self.RunActualGpuTest(url, *args)
    RunActualGpuTest at content/test/gpu/gpu_tests/webgl_conformance_integration_test.py:203
      getattr(self, test_name)(test_path, *args[1:])
    _RunConformanceTest at content/test/gpu/gpu_tests/webgl_conformance_integration_test.py:217
      self._CheckTestCompletion()
    _CheckTestCompletion at content/test/gpu/gpu_tests/webgl_conformance_integration_test.py:211
      'webglTestHarness._finished', timeout=300)
    traced_function at third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:52
      return func(*args, **kwargs)
    WaitForJavaScriptCondition at third_party/catapult/telemetry/telemetry/internal/actions/action_runner.py:252
      return self._tab.WaitForJavaScriptCondition(*args, **kwargs)
    traced_function at third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:52
      return func(*args, **kwargs)
    WaitForJavaScriptCondition at third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py:191
      return self._inspector_backend.WaitForJavaScriptCondition(*args, **kwargs)
    traced_function at third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py:52
      return func(*args, **kwargs)
    WaitForJavaScriptCondition at third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py:281
      return py_utils.WaitFor(IsJavaScriptExpressionTrue, timeout)
    WaitFor at third_party/catapult/common/py_utils/py_utils/__init__.py:113
      res = condition()
    IsJavaScriptExpressionTrue at third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py:278
      return self._runtime.Evaluate(condition, context_id, timeout)
    Evaluate at third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_runtime.py:45
      res = self._inspector_websocket.SyncRequest(request, timeout)
    SyncRequest at third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py:110
      res = self._Receive(timeout)
    _Receive at third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py:149
      data = self._socket.recv()
    recv at third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:293
      opcode, data = self.recv_data()
    recv_data at third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:310
      opcode, frame = self.recv_data_frame(control_frame)
    recv_data_frame at third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:323
      frame = self.recv_frame()
    recv_frame at third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:357
      return self.frame_buffer.recv_frame()
    recv_frame at third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py:336
      self.recv_header()
    recv_header at third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py:286
      header = self.recv_strict(2)
    recv_strict at third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py:371
      bytes_ = self.recv(min(16384, shortage))
    _recv at third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py:427
      return recv(self.sock, bufsize)
    recv at third_party/catapult/telemetry/third_party/websocket-client/websocket/_socket.py:93
      "Connection is already closed.")
  WebSocketConnectionClosedException: Connection is already closed.
  
  Locals:
    bufsize : 2
    bytes_  : ''
    sock    : <socket._socketobject object at 0x7f65107b7280>
  
  No minidump paths to symbolize
  Restarting browser due to unexpected test failure
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( ps | grep -F org.chromium.chrome; echo "PIPESTATUS: ${PIPESTATUS[@]}" );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( p=org.chromium.chrome;if [[ "$(ps)" = *$p* ]]; then am force-stop $p; fi );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f forward --remove tcp:49355
  Starting browser, attempt 1 of 3
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( p=org.chromium.chrome;if [[ "$(ps)" = *$p* ]]; then am force-stop $p; fi );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( ls /root );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( test -e /data/data/org.chromium.chrome/ );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( TZ=utc ls -a -l /data/data/org.chromium.chrome/ );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( rm -r /data/data/org.chromium.chrome/app_chrome /data/data/org.chromium.chrome/app_tabs /data/data/org.chromium.chrome/app_textures /data/data/org.chromium.chrome/cache /data/data/org.chromium.chrome/code_cache /data/data/org.chromium.chrome/files /data/data/org.chromium.chrome/shared_prefs );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f root
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f wait-for-device
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( test -d /sdcard );echo %$?'
  condition 'sd_card_ready' met (0.1s)
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( pm path android );echo %$?'
  condition 'pm_ready' met (0.5s)
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( getprop sys.boot_completed );echo %$?'
  condition 'boot_completed' met (0.6s)
  The command to run should preferably be passed as a sequence of args. If shell features are needed (pipes, wildcards, variables) clients should explicitly set shell=True.
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( su 0 ls /root && ! ls /root );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( cd /sys/devices/system/cpu && for CPU in cpu0 cpu1 cpu2 cpu3; do test -e "${CPU}/cpufreq/scaling_available_governors" && grep -q performance ${CPU}/cpufreq/scaling_available_governors && test -e "$CPU/cpufreq/scaling_governor" && echo performance > "$CPU/cpufreq/scaling_governor"; echo -n "%~%$?%~%"; done );echo %$?'
  Successfully set cpufreq/scaling_governor to 'performance' on: cpu0
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( ndc resolver flushdefaultif );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f logcat -c
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( ( dumpsys window windows )>/data/local/tmp/temp_file-6bf072234c3d7 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f pull /data/local/tmp/temp_file-6bf072234c3d7 /b/c/b/Android_Release__NVIDIA_Shield_/itUpSB2K/tmphJiSpi/tmp_ReadFileWithPull
  Trying to dismiss Error dialog for org.chromium.chrome
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( input keyevent 22 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell 'rm -f /data/local/tmp/temp_file-6bf072234c3d7'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( input keyevent 22 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( input keyevent 66 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( ( dumpsys window windows )>/data/local/tmp/temp_file-9173ca8f4c30f );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f pull /data/local/tmp/temp_file-9173ca8f4c30f /b/c/b/Android_Release__NVIDIA_Shield_/itUpSB2K/tmp2NK4_t/tmp_ReadFileWithPull
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell 'rm -f /data/local/tmp/temp_file-9173ca8f4c30f'
  Still showing a Error dialog for org.chromium.chrome
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( ( dumpsys window windows )>/data/local/tmp/temp_file-b96966b01e059 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f pull /data/local/tmp/temp_file-b96966b01e059 /b/c/b/Android_Release__NVIDIA_Shield_/itUpSB2K/tmpAqX1nk/tmp_ReadFileWithPull
  Trying to dismiss Error dialog for org.chromium.chrome
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( input keyevent 22 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell 'rm -f /data/local/tmp/temp_file-b96966b01e059'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( input keyevent 22 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( input keyevent 66 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( ( dumpsys window windows )>/data/local/tmp/temp_file-814cd7cfaf1f1 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f pull /data/local/tmp/temp_file-814cd7cfaf1f1 /b/c/b/Android_Release__NVIDIA_Shield_/itUpSB2K/tmpuobzd1/tmp_ReadFileWithPull
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell 'rm -f /data/local/tmp/temp_file-814cd7cfaf1f1'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( ( dumpsys window windows )>/data/local/tmp/temp_file-afd455dd98b54 );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f pull /data/local/tmp/temp_file-afd455dd98b54 /b/c/b/Android_Release__NVIDIA_Shield_/itUpSB2K/tmpe1juLA/tmp_ReadFileWithPull
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell 'rm -f /data/local/tmp/temp_file-afd455dd98b54'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( test -e /data/local/chrome-command-line );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( test -e /data/local/tmp/chrome-command-line );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( test -d /data/local/tmp/chrome-command-line );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f push /b/c/b/Android_Release__NVIDIA_Shield_/itUpSB2K/tmpWGsCgU /data/local/tmp/chrome-command-line
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( test -e /data/local/tmp/chrome-command-line );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( TZ=utc ls -a -l /data/local/tmp/ );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( cat /data/local/tmp/chrome-command-line );echo %$?'
  Flags now set on the device: ['--no-default-browser-check', '--disable-external-intent-requests', '--enable-gpu-benchmarking', '--disable-search-geolocation-disclosure', '--metrics-recording-only', '--disable-gpu-watchdog', '--disable-domain-blocking-for-3d-apis', '--ignore-certificate-errors', '--disable-component-extensions-with-background-pages', '--disable-gesture-requirement-for-media-playback', '--disable-gpu-process-crash-limit', '--proxy-server=socks://localhost:42815', '--disable-default-apps', '--disable-fre', '--enable-net-benchmarking', '--js-flags=--expose-gc', '--no-first-run', '--test-type=gpu', '--enable-experimental-canvas-features', '--enable-logging=stderr', '--enable-remote-debugging', '--disable-background-networking']
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( am start -W -d about:blank -n org.chromium.chrome/com.google.android.apps.chrome.Main );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f forward --no-rebind tcp:53303 localabstract:chrome_devtools_remote
  The command to run should preferably be passed as a sequence of args. If shell features are needed (pipes, wildcards, variables) clients should explicitly set shell=True.
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( rm /data/local/tmp/chrome-command-line );echo %$?'
  [host]> /b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/devil/bin/deps/linux2/x86_64/bin/adb -s 0424616022750008267f shell '( test -e /data/local/tmp/chrome-command-line );echo %$?'
  Flags now set on the device: []
  OS: android M
  Model: sb_na_wf
  GPU device 0: VENDOR = 0x0 (NVIDIA Corporation), DEVICE = 0x0 (NVIDIA Tegra)
  GPU Attributes:
    amd_switchable      : False
    basic_info_state    : 1
    context_info_state  : 1
    direct_rendering    : True
    driver_date         : 
    driver_vendor       : 
    driver_version      : 361.00
    encrypted_only      : False
    gl_extensions       : GL_EXT_debug_marker GL_EXT_base_instance GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_buffer_storage GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_copy_image GL_EXT_debug_label GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_geometry_point_size GL_EXT_geometry_shader GL_EXT_gpu_shader5 GL_EXT_map_buffer_range GL_EXT_multi_draw_indirect GL_EXT_multisample_compatibility GL_EXT_occlusion_query_boolean GL_EXT_primitive_bounding_box GL_EXT_render_snorm GL_EXT_robustness GL_EXT_separate_shader_objects GL_EXT_shader_implicit_conversions GL_EXT_shader_integer_mix GL_EXT_shader_io_blocks GL_EXT_shader_non_constant_global_initializers GL_EXT_shader_texture_lod GL_EXT_shadow_samplers GL_EXT_sparse_texture GL_EXT_sRGB GL_EXT_sRGB_write_control GL_EXT_tessellation_point_size GL_EXT_tessellation_shader GL_EXT_texture_border_clamp GL_EXT_texture_buffer GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map_array GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_sRGB_decode GL_EXT_texture_storage GL_EXT_texture_view GL_EXT_unpack_subimage GL_EXT_window_rectangles GL_KHR_context_flush_control GL_KHR_debug GL_KHR_no_error GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_sliced_3d GL_NV_bgr GL_NV_bindless_texture GL_NV_blend_equation_advanced GL_NV_blend_equation_advanced_coherent GL_NV_conditional_render GL_NV_copy_buffer GL_NV_copy_image GL_NV_draw_buffers GL_NV_draw_instanced GL_NV_draw_texture GL_NV_draw_vulkan_image GL_NV_EGL_stream_consumer_external GL_NV_explicit_attrib_location GL_NV_fbo_color_attachments GL_NV_framebuffer_blit GL_NV_framebuffer_multisample GL_NV_generate_mipmap_sRGB GL_NV_instanced_arrays GL_NV_internalformat_sample_query GL_NV_gpu_shader5 GL_NV_image_formats GL_NV_occlusion_query_samples GL_NV_non_square_matrices GL_NV_pack_subimage GL_NV_packed_float GL_NV_packed_float_linear GL_NV_path_rendering GL_NV_pixel_buffer_object GL_NV_polygon_mode GL_NV_read_buffer GL_NV_read_depth GL_NV_read_depth_stencil GL_NV_read_stencil GL_NV_secure_context GL_NV_shader_noperspective_interpolation GL_NV_shadow_samplers_array GL_NV_shadow_samplers_cube GL_NV_sRGB_formats GL_NV_texture_array GL_NV_texture_border_clamp GL_NV_texture_compression_latc GL_NV_texture_compression_s3tc GL_NV_texture_compression_s3tc_update GL_NV_timer_query GL_NV_viewport_array GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_depth_texture GL_OES_depth_texture_cube_map GL_OES_copy_image GL_OES_draw_buffers_indexed GL_OES_draw_elements_base_vertex GL_OES_texture_border_clamp GL_OES_tessellation_point_size GL_OES_tessellation_shader GL_OES_texture_buffer GL_OES_geometry_point_size GL_OES_geometry_shader GL_OES_gpu_shader5 GL_OES_shader_io_blocks GL_OES_texture_view GL_OES_primitive_bounding_box GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_EGL_sync GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_sample_shading GL_OES_sample_variables GL_OES_shader_image_atomic GL_OES_shader_multisample_interpolation GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_cube_map_array GL_OES_texture_npot GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_stencil8 GL_OES_texture_storage_multisample_2d_array GL_OES_vertex_array_object GL_OES_vertex_half_float GL_ANDROID_extension_pack_es31a 
    gl_renderer         : NVIDIA Tegra
    gl_reset_notification_strategy: 33362
    gl_vendor           : NVIDIA Corporation
    gl_version          : OpenGL ES 3.2 NVIDIA 361.00
    gl_ws_extensions    : 
    gl_ws_vendor        : 
    gl_ws_version       : 
    in_process_gpu      : False
    initialization_time : 0.237083
    jpeg_decode_accelerator_supported: False
    max_framerate_denominator: 1
    max_framerate_numerator: 30
    max_msaa_samples    : 8
    max_resolution_height: 720
    max_resolution_width: 1280
    min_resolution_height: 0
    min_resolution_width: 0
    optimus             : False
    passthrough_cmd_decoder: False
    pixel_shader_version: 3.20
    process_crash_count : 0
    profile             : 11
    sandboxed           : False
    software_rendering  : False
    vertex_shader_version: 3.20
    video_decode_accelerator_flags: 55
  Feature Status:
    2d_canvas           : enabled
    flash_3d            : enabled
    flash_stage3d       : enabled
    flash_stage3d_baseline: enabled
    gpu_compositing     : enabled
    multiple_raster_threads: disabled_off
    native_gpu_memory_buffers: disabled_software
    rasterization       : enabled
    video_decode        : enabled
    video_encode        : unavailable_software
    vpx_decode          : enabled
    webgl               : enabled
    webgl2              : enabled
  Driver Bug Workarounds:
    clear_uniforms_before_first_program_use
    disable_discard_framebuffer
    disable_framebuffer_cmaa
    force_cube_complete
    max_texture_size_limit_4096
    pack_parameters_workaround_with_pack_buffer
    scalarize_vec_and_mat_constructor_args
    unpack_alignment_workaround_with_unpack_buffer
    unpack_overlapping_rows_separately_unpack_buffer
  Started browser successfully.
  Traceback (most recent call last):
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/telemetry/testing/serially_executed_browser_test_case.py", line 194, in <lambda>
      return lambda self: based_method(self, *args)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/content/test/gpu/gpu_tests/gpu_integration_test.py", line 73, in _RunGpuTest
      self.RunActualGpuTest(url, *args)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/content/test/gpu/gpu_tests/webgl_conformance_integration_test.py", line 203, in RunActualGpuTest
      getattr(self, test_name)(test_path, *args[1:])
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/content/test/gpu/gpu_tests/webgl_conformance_integration_test.py", line 217, in _RunConformanceTest
      self._CheckTestCompletion()
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/content/test/gpu/gpu_tests/webgl_conformance_integration_test.py", line 211, in _CheckTestCompletion
      'webglTestHarness._finished', timeout=300)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 52, in traced_function
      return func(*args, **kwargs)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/telemetry/internal/actions/action_runner.py", line 252, in WaitForJavaScriptCondition
      return self._tab.WaitForJavaScriptCondition(*args, **kwargs)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 52, in traced_function
      return func(*args, **kwargs)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py", line 191, in WaitForJavaScriptCondition
      return self._inspector_backend.WaitForJavaScriptCondition(*args, **kwargs)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 52, in traced_function
      return func(*args, **kwargs)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 281, in WaitForJavaScriptCondition
      return py_utils.WaitFor(IsJavaScriptExpressionTrue, timeout)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/common/py_utils/py_utils/__init__.py", line 113, in WaitFor
      res = condition()
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 278, in IsJavaScriptExpressionTrue
      return self._runtime.Evaluate(condition, context_id, timeout)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_runtime.py", line 45, in Evaluate
      res = self._inspector_websocket.SyncRequest(request, timeout)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 110, in SyncRequest
      res = self._Receive(timeout)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 149, in _Receive
      data = self._socket.recv()
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 293, in recv
      opcode, data = self.recv_data()
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 310, in recv_data
      opcode, frame = self.recv_data_frame(control_frame)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 323, in recv_data_frame
      frame = self.recv_frame()
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 357, in recv_frame
      return self.frame_buffer.recv_frame()
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py", line 336, in recv_frame
      self.recv_header()
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py", line 286, in recv_header
      header = self.recv_strict(2)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py", line 371, in recv_strict
      bytes_ = self.recv(min(16384, shortage))
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 427, in _recv
      return recv(self.sock, bufsize)
    File "/b/c/b/Android_Release__NVIDIA_Shield_/irglGOa0/third_party/catapult/telemetry/third_party/websocket-client/websocket/_socket.py", line 93, in recv
      "Connection is already closed.")
  WebSocketConnectionClosedException: Connection is already closed.