Undeterministic crashes of app in Travis Windows environment

Our application is written in golang. Since few months we observe undetermnistic crashes during tests executed on Travis CI. Example part of log below.

App works perfectly fine on different onpremise environment, custom vm in AWS and CircleCI Windows environmnt. Only Travis env has something causing ocasional crashes.

We don’t really have any means to investigate anything in travis windows environment. Do you have any suggestions different then migrating out of Travis ? Are there some background processes (eg. antivir) that could spontaneously impact CI processes ?

=== log ===
runtime: unknown pc 0x300007fff

stack: frame={sp:0xc0008401f8, fp:0x0} stack=[0xc00083a000,0xc000842000)

000000c0008400f8: 000000c000840148 000000c0009fa3c8

000000c000840108: 0000000000000001 000001c000840198

000000c000840118: 0000000000aaeaa5 <runtime.mallocgc+1509> 000002d3bb5829f0

000000c000840128: 0000000002513ea0 000000c0009f0bf0

000000c000840138: 0000000000000010 0000000000000000

000000c000840148: 00000000026c96a0 00000000023a5a80

000000c000840158: 000000c0008401b8 0000000000bdf039 <encoding/json.typeEncoder+89>

000000c000840168: 00000000039116c0 00000000026c96a0

000000c000840178: 00000000023a5a80 0000000002465a40

000000c000840188: 000000c00004e130 000000c0002d7801

000000c000840198: 000000c0008401c8 000000c0008401c8

000000c0008401a8: 0000000000b0d826 <reflect.typedmemmove+70> 0000000002428940

000000c0008401b8: 000000c0008401f0 0000000000bdefa5 <encoding/json.valueEncoder+101>

000000c0008401c8: 0000000002c197f8 00000000023a5a80

000000c0008401d8: 000000c00004e130 0000000002c197f8

000000c0008401e8: 00000000023a5a80 000000c000840228

000000c0008401f8: <0000000000bdef29 <encoding/json.(*encodeState).reflectValue+137> 000000c000802300

000000c000840208: 00000000023a5a80 000000c0003beb58

000000c000840218: 000000000000008e 000000c0003b0100

000000c000840228: 000000c000840270 0000000000be1459 <encoding/json.interfaceEncoder+185>

000000c000840238: 000000c000802300 00000000023a5a80

000000c000840248: 000000c0003beb58 000000000000008e

000000c000840258: 000000c0003b0100 000000000000008e

000000c000840268: 0000000000000014 000000c000840418

000000c000840278: 0000000000be1ec6 <encoding/json.mapEncoder.encode+902> 000000c000802300

000000c000840288: 0000000002428940 000000c0009f1b00

000000c000840298: 0000000000000094 000000c0009f0100

000000c0008402a8: 0000000000000098 0000000002428940

000000c0008402b8: 000000c0009f1b00 0000000000000094

000000c0008402c8: 00000000026c96a0 000000c000840300

000000c0008402d8: 0000000000000004 0000000000000001

000000c0008402e8: 0000000000000003 000000000245c160

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