1482843 - Mozregression is unable to start application on unrooted devices on Android

Status: VERIFIED FIXED

(Testing :: mozregression, defect)

Description

[Bogdan Surd, QA [:bsurd, NI]]

Attachment: mozregression.jpg

Mozregression version:
2.3.30

Operating system:
Windows 10 (x64)

STR:
 1. Connect a device with usb debugging enabled to the PC.
 2. Run any regression on the device. (eg. mozregression --app fennec --good 2018-07-12)

Expected results:
 Mozregression works without any problems.

Actual results:
 Mozregression encounters an error returning "Unable to start the application".

Comment 1

[Bogdan Surd, QA [:bsurd, NI]]

Attachment: debug.txt

Comment 2

[William Lachance (:wlach)]

Looks like it's failing to find a writeable area on the device to write a temporary profile. Does installing an Android .apk manually work? Can you find a writeable area/directory on the device? What device is it?

Comment 3

[Bogdan Surd, QA [:bsurd, NI]]

Devices:
 - Nexus 5 (Android 6.0.1)
 - Huawei Honor 8 (Android 7.0)
 - Nexus 6P (Android 8.1.0)

Hello,

Installing a build manually from the device or using ADB works without any issues. A working path would be /storage/emulated/0 (for the Nexus 5). A folder called tests is created in that directory.

The app fails when trying to start fennec as mozregression uninstalls(if needed)/installs nightly without any issue on all of the mentioned devices.

Note:
Mozregression worked with these devices in the past without any kind of issue, the issue started after updating mozregression. (the previous version was 2.3.25 if I recall correctly)

Comment 4

[William Lachance (:wlach)]

Ah, it's probably the upgrade of mozdevice that broke us then. It looks like they added some code to require root in bug 1440714.

Probably our best option is to revert mozdevice versions for now, until we can switch away from it altogether.

Comment 6

[William Lachance (:wlach)]

Hey, I just released a new version of mozregression (v2.3.31) which should not have the rooting requirement. Unfortunately I can't seem to get my pixel 2 working with usb debugging to test (I think it's just a bad cable). Could one of you give it a try and report back here?

Comment 7

[Bogdan Surd, QA [:bsurd, NI]]

Attachment: debugger.txt

Devices:
 - Samsung Galaxy Note 8 (Android 8)
 - Nexus 9 (Android 6.0.1).

Verified with 2 devices, the Samsung works as expected without any issue.

On the Nexus 9, on the other hand, it's unable to install the application. Installing via ADB works without any issue.

It seems to give a [INSTALL_FAILED_ALREADY_EXISTS], I do not have any Firefox installed on the device when trying to run mozregression. Installing a build results in the same error.

Comment 8

[William Lachance (:wlach)]

(In reply to Bogdan Surd, QA [:BogdanS, NI | PTO 08.15 - 08.19] from comment #7)
> Created attachment 8999977 [details]
> debugger.txt
> 
> Devices:
>  - Samsung Galaxy Note 8 (Android 8)
>  - Nexus 9 (Android 6.0.1).
> 
> Verified with 2 devices, the Samsung works as expected without any issue.
> 
> On the Nexus 9, on the other hand, it's unable to install the application.
> Installing via ADB works without any issue.
> 
> It seems to give a [INSTALL_FAILED_ALREADY_EXISTS], I do not have any
> Firefox installed on the device when trying to run mozregression. Installing
> a build results in the same error.

Thanks for testing. I think the problem you're seeing on the nexus 9 is a different problem. Could you file a bug for that?

Comment 9

[Mike Taylor [:miketaylr]]

(In reply to William Lachance (:wlach) (use needinfo!) from comment #6)
> Hey, I just released a new version of mozregression (v2.3.31) which should
> not have the rooting requirement. Unfortunately I can't seem to get my pixel
> 2 working with usb debugging to test (I think it's just a bad cable). Could
> one of you give it a try and report back here?

Working for me on my Pixel, thanks!