Repository: flutter
Issue: fast_scroll_large_images__memory flakes, NoSuchMethodError: The method 'group' was called on null, SIGABRT
Labels: team,platform-android,engine,team: benchmark,P2,team-android,triaged-android

Process has died:
```
1-01-07T20:04:59.156869: "/usr/local/share/android-sdk/platform-tools/adb" exit code: 0
2021-01-07T20:04:59.222259: adb logcat: --------- beginning of crash
2021-01-07T20:04:59.222521: adb logcat: 01-07 20:00:07.933  9582  9600 F libc    : Fatal signal 6 (SIGABRT), code -6 in tid 9600 (1.io)
2021-01-07T20:04:59.308213: adb logcat: 01-07 20:00:08.019  9630  9630 F DEBUG   : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
2021-01-07T20:04:59.308570: adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   : Build fingerprint: 'motorola/athene/athene:7.0/NPJS25.93-14-18/3:user/release-keys'
2021-01-07T20:04:59.308730: adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   : Revision: 'p2a0'
adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   : ABI: 'arm'
2021-01-07T20:04:59.309315: adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   : pid: 9582, tid: 9600, name: 1.io  >>> com.example.macrobenchmarks <<<
2021-01-07T20:04:59.309470: adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   : signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
2021-01-07T20:04:59.309810: adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   :     r0 00000000  r1 00002580  r2 00000006  r3 00000008
2021-01-07T20:04:59.309989: adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   :     r4 9372d978  r5 00000006  r6 9372d920  r7 0000010c
adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   :     r8 9372d698  r9 a2460b80  sl f47dba43  fp 00000000
adb logcat: 01-07 20:00:08.020  9630  9630 F DEBUG   :     ip 00000002  sp 9372d4e8  lr abf313e7  pc abf33c44  cpsr 20010010
2021-01-07T20:04:59.319527: adb logcat: 01-07 20:00:08.028  9630  9630 F DEBUG   : 
2021-01-07T20:04:59.319666: adb logcat: 01-07 20:00:08.028  9630  9630 F DEBUG   : backtrace:
2021-01-07T20:04:59.319753: adb logcat: 01-07 20:00:08.028  9630  9630 F DEBUG   :     #00 pc 00049c44  /system/lib/libc.so (tgkill+12)
2021-01-07T20:04:59.319859: adb logcat: 01-07 20:00:08.028  9630  9630 F DEBUG   :     #01 pc 000473e3  /system/lib/libc.so (pthread_kill+34)
adb logcat: 01-07 20:00:08.028  9630  9630 F DEBUG   :     #02 pc 0001d535  /system/lib/libc.so (raise+10)
adb logcat: 01-07 20:00:08.028  9630  9630 F DEBUG   :     #03 pc 00019081  /system/lib/libc.so (__libc_android_abort+34)
adb logcat: 01-07 20:00:08.028  9630  9630 F DEBUG   :     #04 pc 000170e4  /system/lib/libc.so (abort+4)
adb logcat: 01-07 20:00:08.028  9630  9630 F DEBUG   :     #05 pc 002b48f3  /data/app/com.example.macrobenchmarks-1/lib/arm/libflutter.so (offset 0x139000)
2021-01-07T20:05:00.379378: adb logcat: 01-07 20:00:09.089  1524  9632 W ActivityManager:   Force finishing activity com.example.macrobenchmarks/.MainActivity
2021-01-07T20:05:00.396678: adb logcat: 01-07 20:00:09.104  1524  1552 W ActivityManager: Failed setting process group of 9582 to 1
2021-01-07T20:05:00.412932: adb logcat: 01-07 20:00:09.122  1524  4562 E ActivityManager: Sending non-protected broadcast com.motorola.motocare.INTENT_TRIGGER from system 3886:com.motorola.process.system/1000 pkg com.motorola.motgeofencesvc
2021-01-07T20:05:00.413169: adb logcat: 01-07 20:00:09.122  1524  4562 E ActivityManager: java.lang.Throwable
```

`shell dumpsys meminfo` stdout is `No process found for: com.example.macrobenchmarks` and the test is expecting `TOTAL`
https://github.com/flutter/flutter/blob/c985fd35cd94a04371d70b91a38db54a3a7d7ee6/dev/devicelab/lib/framework/adb.dart#L499

```
Executing: /usr/local/share/android-sdk/platform-tools/adb -s ZY223J893R shell dumpsys meminfo com.example.macrobenchmarks in /Users/flutter/.cocoon/flutter/dev/benchmarks/macrobenchmarks
2021-01-08T17:05:52.729098: stdout: No process found for: com.example.macrobenchmarks
2021-01-08T17:05:52.731365: "/usr/local/share/android-sdk/platform-tools/adb" exit code: 0
2021-01-08T17:05:52.759834: Task failed: NoSuchMethodError: The method 'group' was called on null.
Receiver: null
Tried calling: group(1)2021-01-08T17:05:52.760374: 

Stack trace:
2021-01-08T17:05:52.802826: dart:core                                                  Object.noSuchMethod
package:flutter_devicelab/framework/adb.dart 502:35        AndroidDevice.getMemoryStats
===== asynchronous gap ===========================
dart:async                                                 _asyncErrorWrapperHelper
package:flutter_devicelab/framework/framework.dart         _TaskRunner._performTask.<fn>
package:stack_trace                                        Chain.capture
package:flutter_devicelab/framework/framework.dart 217:11  _TaskRunner._performTask
package:flutter_devicelab/framework/framework.dart 120:41  _TaskRunner.run
```
[fast_scroll_large_images__memory_29e2cfe_2.log](https://github.com/flutter/flutter/files/5823596/fast_scroll_large_images__memory_29e2cfe_2.log)


This is third flakiest test in the last two months.