Segmentation Fault Error using Julia LibCurl Wrapper

Running the Following Code with Julia LibCurl.jl

curl_header_list = Cstring[]

    for header in keys(headers)
        value = headers[header]
        item =Cstring(pointer("$header: $value"))
        push!(curl_header_list, item)

    curl_easy_setopt(curl, CURLOPT_URL, "$burl/api/v1/order/bulk")
    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, curl_header_list)

    res = curl_easy_perform(curl);

We are receiving the following segmentation fault error message:

signal (11): Segmentation fault
in expression starting at /home/ubuntu/speed_test.jl:208
Curl_safe_strcasecompare at /home/ubuntu/.julia/packages/LibCURL/lWJxD/deps/usr/lib/ (unknown line)
Allocations: 3088296 (Pool: 3087464; Big: 832); GC: 6
Segmentation fault (core dumped)

Try this code:

    slist = Ptr{Cvoid}(0)
    for header in keys(headers)
        slist = curl_slist_append(slist, "$header: $(headers[header])")

    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, slist)