Seeing multiple net_unittests/unit_tests/ content_browsertests failure on Mac.

Link to the builder:
====================
https://uberchromegw.corp.google.com/i/official.desktop/builders/mac64/builds/3270

Link to the log:
================
Net_Unittests : https://logs.chromium.org/v/?s=chrome%2Fbb%2Fofficial.desktop%2Fmac64%2F3270%2F%2B%2Frecipes%2Fsteps%2Fnet_unittests%2F0%2Fstdout
Unit_tests : https://logs.chromium.org/v/?s=chrome%2Fbb%2Fofficial.desktop%2Fmac64%2F3270%2F%2B%2Frecipes%2Fsteps%2Funit_tests%2F0%2Fstdout
Content_browsertests : https://logs.chromium.org/v/?s=chrome%2Fbb%2Fofficial.desktop%2Fmac64%2F3270%2F%2B%2Frecipes%2Fsteps%2Fcontent_browsertests%2F0%2Fstdout

Error Log:
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SSLClientSocketTest.Write_WithSynchronousError (../../net/socket/ssl_client_socket_unittest.cc:1635)
SSLClientSocketTest.Write_WithSynchronousErrorNoRead (../../net/socket/ssl_client_socket_unittest.cc:1703)
TokenBindingURLRequestTest.DontForwardHeaderFromHttp (../../net/url_request/url_request_unittest.cc:4288)
TokenBindingURLRequestTest.ForwardTokenBinding (../../net/url_request/url_request_unittest.cc:4237)
TokenBindingURLRequestTest.ForwardWithoutTokenBinding (../../net/url_request/url_request_unittest.cc:4338)
TokenBindingURLRequestTest.TokenBindingTest (../../net/url_request/url_request_unittest.cc:4194)
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<Thread(Thread-1, started 123145420795904)> ProcessRead: proc.stdout finished.
<Thread(Thread-1, started 123145420795904)> ProcessRead: cleaning up.
<Thread(Thread-2, started daemon 123145425002496)> TimedFlush: Finished
<Thread(Thread-1, started 123145420795904)> ProcessRead: finished.
python /b/rr/tmpf1iYKP/rw/checkout/recipes/.recipe_deps/depot_tools/gsutil.py -- cp file:///var/folders/74/6q8tck6s76q64sp6b7wsww_m0000gm/T/tmp4t3J4P gs://chrome-gtest-results/raw/2018/8/6/10/f179536590fb73a1c5d23c72206a16d209cdde67.json.gz
Copying file:///var/folders/74/6q8tck6s76q64sp6b7wsww_m0000gm/T/tmp4t3J4P [Content-Type=application/octet-stream]...
/ [0 files][    0.0 B/  2.6 MiB]                                                
/ [1 files][  2.6 MiB/  2.6 MiB]                                                
Operation completed over 1 objects/2.6 MiB.                                      
python /b/rr/tmpf1iYKP/rw/checkout/recipes/.recipe_deps/depot_tools/gsutil.py -- cp file:///var/folders/74/6q8tck6s76q64sp6b7wsww_m0000gm/T/tmp4t3J4P gs://chrome-gtest-results/buildbot/official.desktop/mac64/3270/net_unittests.json.gz
Copying file:///var/folders/74/6q8tck6s76q64sp6b7wsww_m0000gm/T/tmp4t3J4P [Content-Type=application/octet-stream]...
/ [0 files][    0.0 B/  2.6 MiB]                                                
/ [1 files][  2.6 MiB/  2.6 MiB]                                                
Operation completed over 1 objects/2.6 MiB.                                      
python /b/rr/tmpf1iYKP/rw/checkout/recipes/.recipe_deps/depot_tools/gsutil.py -- cp file:///var/folders/74/6q8tck6s76q64sp6b7wsww_m0000gm/T/tmpHu6JaO gs://chrome-gtest-results/bigquery/2018/8/6/10/f179536590fb73a1c5d23c72206a16d209cdde67.json.gz
Copying file:///var/folders/74/6q8tck6s76q64sp6b7wsww_m0000gm/T/tmpHu6JaO [Content-Type=application/octet-stream]...
/ [0 files][    0.0 B/436.2 KiB]                                                
/ [1 files][436.2 KiB/436.2 KiB]                                                
Operation completed over 1 objects/436.2 KiB.                                    
exit code (as seen by runtest.py): 1
1112 new files were left in /var/folders/74/6q8tck6s76q64sp6b7wsww_m0000gm/T: Fix the tests to clean up themselves.
step returned non-zero exit code: 1

Change Log:
-----------
https://chromium.googlesource.com/chromium/src/+log/70.0.3517.0..70.0.3518.0?pretty=fuller&n=10000

Note:
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1. Unable to find the possible suspect from above log file and cc files.
2. This fails very inconsistently and seems to recover in subsequent builds.

Logging this for tracking purpose and for confirmation if anything actionable here.

Thank you!