Crash issue

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com.mapbox.common.Worker 2
EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000008
0
MapboxSearch
mapbox::search::SearchRequestsRegistry::remove(unsigned long long) + 12
1
MapboxSearch
std::__1::__function::__func)::$_2, std::__1::allocator)::$_2>, void (mapbox::search::SearchResponse&&)>::operator()(mapbox::search::SearchResponse&&) + 52
2
MapboxSearch
std::__1::__function::__func, unsigned long long, mapbox::search::RequestOptions, mapbox::search::SuggestAction, std::__1::function)::$_3>(std::__1::basic_string, std::__1::allocator> const&, std::experimental::optional>>, mapbox::search::SearchSession::retrieve(std::__1::weak_ptr, unsigned long long, mapbox::search::RequestOptions, mapbox::search::SuggestAction, std::__1::function)::$_3&&)::'lambda'(nonstd::expected_lite::expected, std::__1::allocator>, mapbox::util::variant>&&), std::__1::allocator, unsigned long long, mapbox::search::RequestOptions, mapbox::search::SuggestAction, std::__1::function)::$_3>(std::__1::basic_string, std::__1::allocator> const&, std::experimental::optional>>, mapbox::search::SearchSession::retrieve(std::__1::weak_ptr, unsigned long long, mapbox::search::RequestOptions, mapbox::search::SuggestAction, std::__1::function)::$_3&&)::'lambda'(nonstd::expected_lite::expected, std::__1::allocator>, mapbox::util::variant>&&)>, void (nonstd::expected_lite::expected, std::__1::allocator>, mapbox::util::variant>&&)>::operator()(nonstd::expected_lite::expected, std::__1::allocator>, mapbox::util::variant>&&) + 680
3
MapboxCommon
mapbox::common::TaskSequence::scheduleTask(unsigned long long, std::__1::chrono::time_point>>)::'lambda'()::operator()() const + 604
4
MapboxCommon
void* std::__1::__thread_proxy>, mapbox::common::ThreadedSchedulerBase::makeSchedulerThread(unsigned long, mapbox::base::WeakPtr, mapbox::common::ThreadServiceType)::$_0>>(void*) + 784
5
libsystem_pthread.dylib
_pthread_start + 148
6
libsystem_pthread.dylib
thread_start + 8

Start with the crash frames for SearchRequestsRegistry::remove, SearchOnline::retrieve, and SearchSession::sendRequest, then trace how the request is registered and removed across the worker thread. Use the reported EXC_BAD_ACCESS address and stack trace to identify a reproducible lifecycle or concurrency failure; done means the crash is prevented and the relevant request flow remains functional.

Written by the indexing model from the issue text.