Segmentation fault in worker test

On canary-base, there is currently one test failure:

out/Release/node test/parallel/test-worker-sharedarraybuffer-from-worker-thread.js        
[1]    11828 segmentation fault (core dumped)  out/Release/node

Backtrace:

#0  0x0000000000000020 in ?? ()
#1  0x0000000000e7a9f9 in v8::internal::BackingStore::~BackingStore() ()
#2  0x0000000000ba6dab in std::_Sp_counted_deleter<v8::internal::BackingStore*, std::default_delete<v8::internal::BackingStore>, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>::_M_dispose() ()
#3  0x0000000000d11a51 in v8::internal::ArrayBufferTracker::FreeAll(v8::internal::Page*) ()
#4  0x0000000000d11b90 in v8::internal::ArrayBufferTracker::TearDown(v8::internal::Heap*) ()
#5  0x0000000000d60b8c in v8::internal::Heap::TearDown() ()
#6  0x0000000000cfb6e3 in v8::internal::Isolate::Deinit() ()
#7  0x0000000000cfd57e in v8::internal::Isolate::Delete(v8::internal::Isolate*)
    ()
#8  0x0000000000a5c209 in node::NodeMainInstance::~NodeMainInstance() ()
#9  0x00000000009e738b in node::Start(int, char**) ()
#10 0x00007f81dba05f33 in __libc_start_main () from /lib64/libc.so.6
#11 0x0000000000951abe in _start ()

/cc @addaleax