+++ This bug was initially created as a clone of Bug #1242832 +++ https://treeherder.mozilla.org/logviewer.html#?job_id=424813&repo=autoland 06:54:31 INFO - 10134 INFO TEST-START | devtools/client/storage/test/browser_storage_localstorage_error.js 06:54:41 INFO - console.warn: Failed to enumerate localStorage for host about:home: [Exception... "Component is not available" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/storage.js :: populateStoresForHost :: line 1002" data: no] 06:54:41 INFO - console.warn: Failed to enumerate sessionStorage for host about:home: [Exception... "Component is not available" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/server/actors/storage.js :: populateStoresForHost :: line 1002" data: no] 06:54:48 INFO - MEMORY STAT | vsize 20972879MB | residentFast 628MB 06:54:48 INFO - 10135 INFO TEST-OK | devtools/client/storage/test/browser_storage_localstorage_error.js | took 17855ms 06:54:49 INFO - 10136 INFO TEST-START | devtools/client/storage/test/browser_storage_overflow.js 06:55:48 INFO - TEST-INFO | started process screentopng 06:55:50 INFO - TEST-INFO | screentopng: exit 0 06:55:50 INFO - 10137 INFO checking window state 06:55:50 INFO - 10138 INFO Entering test bound 06:55:50 INFO - 10139 INFO Adding a new tab with URL: http://test1.example.org/browser/devtools/client/storage/test/storage-overflow.html 06:55:50 INFO - 10140 INFO Waiting for event: 'load' on [object XULElement]. 06:55:50 INFO - 10141 INFO Got event: 'load' on [object XULElement]. 06:55:50 INFO - 10142 INFO Tab added and finished loading 06:55:50 INFO - 10143 INFO Opening the storage inspector 06:55:50 INFO - 10144 INFO Opening the toolbox 06:55:50 INFO - 10145 INFO Console message: [JavaScript Warning: "XUL box for vbox element contained an inline label child, forcing all its children to be wrapped in a block." {file: "chrome://devtools/content/storage/storage.xul" line: 0}] 06:55:50 INFO - 10146 INFO Waiting for the stores to update 06:55:50 INFO - 10147 INFO Making sure that the toolbox's frame is focused 06:55:50 INFO - 10148 INFO TEST-PASS | devtools/client/storage/test/browser_storage_overflow.js | Table should initially display 50 items - 06:55:50 INFO - 10149 INFO TEST-PASS | devtools/client/storage/test/browser_storage_overflow.js | Table should display 100 items after scrolling - 06:55:50 INFO - 10150 INFO TEST-PASS | devtools/client/storage/test/browser_storage_overflow.js | Table should display 150 items after scrolling - 06:55:50 INFO - 10151 INFO TEST-PASS | devtools/client/storage/test/browser_storage_overflow.js | Table should display all 160 items after scrolling - 06:55:50 INFO - 10152 INFO Leaving test bound 06:55:50 INFO - 10153 INFO Removing tab. 06:55:50 INFO - 10154 INFO Waiting for event: 'TabClose' on [object XULElement]. 06:55:50 INFO - 10155 INFO Got event: 'TabClose' on [object XULElement]. 06:55:50 INFO - 10156 INFO Tab removed and finished closing 06:55:50 INFO - 10157 INFO TEST-UNEXPECTED-FAIL | devtools/client/storage/test/browser_storage_overflow.js | This test exceeded the timeout threshold. It should be rewritten or split up. If that's not possible, use requestLongerTimeout(N), but only as a last resort. -

Something clearly happened between the following two entries: 06:54:49 INFO - 10136 INFO TEST-START | devtools/client/storage/test/browser_storage_overflow.js 06:55:48 INFO - TEST-INFO | started process screentopng Let's wait for a log that shows this information.

This error has not been triggered for over a year now so we are safe to close it.