reportDoubleFree

        fn reportDoubleFree(ret_addr: usize, alloc_stack_trace: StackTrace, free_stack_trace: StackTrace) void {
            @branchHint(.cold);
            var addr_buf: [stack_n]usize = undefined;
            const second_free_stack_trace = std.debug.captureCurrentStackTrace(.{ .first_address = ret_addr }, &addr_buf);
            log.err("Double free detected. Allocation: {f} First free: {f} Second free: {f}", .{
                std.debug.FormatStackTrace{
                    .stack_trace = alloc_stack_trace,
                    .terminal_mode = std.log.terminalMode(),
                },
                std.debug.FormatStackTrace{
                    .stack_trace = free_stack_trace,
                    .terminal_mode = std.log.terminalMode(),
                },
                std.debug.FormatStackTrace{
                    .stack_trace = second_free_stack_trace,
                    .terminal_mode = std.log.terminalMode(),
                },
            });
        }