The async-hooks/test-zlib.zlib-binding.deflate.js test is flaky since we updated Node to Node master yesterday. Any async hooks folks want to look into this cc @addaleax @trevnorris? @Trott is seeing a corrupted double-linked list error with the same test (on Node master with his PR #17856).

  ---
  duration_ms: 0.264
  severity: fail
  stack: |-
    *** Error in `out/Release/node': malloc(): smallbin double linked list corrupted: 0x0000000002b8e990 ***

This is the builder: https://ci.chromium.org/p/v8/builders/luci.v8.try/v8_node_linux64_rel
Here's one of the builds with a malloc error: https://ci.chromium.org/p/v8/builds/b8957891491866158528