I manually reset to fe0c8a56f34301a2092281832d79498f3ca45023 , which is the commit before the failure (previous run of the bot) and I still see the failure. So, either I'm doing something wrong in trying to repro, or the test was failing earlier on.

I'm seeing MSan causing the browser to crash when print preview is opened.  I'm trying to investigate why.  I've been seeing this failure locally for a few days.

It's weird that it just started crashing.  That test has been in there for a while:
https://cs.chromium.org/chromium/src/chrome/test/data/webui/print_preview_destination_search_test.js?type=cs&q=ReceiveFailedSetup&sq=package:chromium&l=219

It's behaving correctly, but the console error is causing the test to fail.  I'll have a fix out for it shortly.

skau has fix fix out for review here: https://codereview.chromium.org/2848093002/ .

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d61afbf71f7ccea7bf8b2e5632e3f3d052a7813f

commit d61afbf71f7ccea7bf8b2e5632e3f3d052a7813f
Author: skau <skau@chromium.org>
Date: Tue May 02 22:27:32 2017

Process null capabilities as a capability fetch failure.

We can never do anything if a request for printer capabilities returns
null.  Thus, assert that it's non-null and call the failure code if capabilities is null.

This also fixes PrintPreviewDestinationSearchTest.Select which has been
failing on the Linux MSan buildbot sporadically.

BUG= 708739 , 716595 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2848093002
Cr-Commit-Position: refs/heads/master@{#468794}

[modify] https://crrev.com/d61afbf71f7ccea7bf8b2e5632e3f3d052a7813f/chrome/browser/resources/print_preview/native_layer.js
[modify] https://crrev.com/d61afbf71f7ccea7bf8b2e5632e3f3d052a7813f/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
[modify] https://crrev.com/d61afbf71f7ccea7bf8b2e5632e3f3d052a7813f/chrome/test/data/webui/print_preview_destination_search_test.js

browser_tests are now passing
https://build.chromium.org/p/chromium.memory/builders/Linux%20MSan%20Tests/builds/532