Out of memory creates Cannot check the submission

[aaaaaa2493]

Error text:

"Cannot check the submission. Please send the report to Hyperskill team. 
stdout:

stderr:

FAILURE: Build failed with an exception.

* What went wrong: 
Execution failed for task ':test'. 
> Process 'Gradle Test Executor 1' finished with non-zero exit value 137 
This problem might be caused by incorrect test process configuration. 
Please refer to the test execution section in the User Manual at https://docs.gradle.org/5.3.1/userguide/java_testing.html#sec:test_execution

* Try: 
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 35s"