During April 2025, Grigory Pastukhov focused on stabilizing the test suite for the facebook/folly repository, addressing compatibility issues between libc++ and libstdc++. He resolved failures in tests such as F14Map, epoll_backend_test, not_null_test.cpp, and observer_test by normalizing assertions and logic to account for differences in standard library implementations. Working primarily in C++ and leveraging skills in debugging, low-level programming, and memory management, Grigory ensured that the test suite produced consistent results across both environments. This work improved the reliability of folly’s cross-ABI testing infrastructure, reflecting a deep understanding of build systems and platform-specific behavior.