"Assertion failed!" when the game is loading

[Max5377]

Observed behaviour

On current master when the game is loading, when it reaches 9.1 bil years, it will show this error shortly after

After checking out several times it seems like 6821097 is causing this error, because when cheking out to a463999 just before 6821097, the game loads successfully.

Call stack

pioneer.exe!std::string::back() Line 3873 C++
pioneer.exe!path_to_module(std::string path) Line 149 C++
pioneer.exe!get_caller_module_name(lua_State * L, int depth) Line 456 C++
pioneer.exe!l_get_module_name(lua_State * L) Line 486 C++
pioneer.exe!luaD_precall(lua_State * L, lua_TValue * func, int nresults) Line 318 C
pioneer.exe!luaV_execute(lua_State * L) Line 709 C
pioneer.exe!luaD_call(lua_State * L, lua_TValue * func, int nResults, int allowyield) Line 396 C
pioneer.exe!lua_callk(lua_State * L, int nargs, int nresults, int ctx, int(*)(lua_State *) k) Line 906 C
pioneer.exe!LuaConsole::RegisterAutoexec() Line 175 C++
pioneer.exe!LuaConsole::LuaConsole() Line 58 C++
pioneer.exe!StartupScreen::Start::__l2::() Line 591 C++
[External code]
pioneer.exe!StartupScreen::RunNewLoader() Line 632 C++
pioneer.exe!StartupScreen::Update(float deltaTime) Line 610 C++
pioneer.exe!Application::Run() Line 195 C++
pioneer.exe!SDL_main(int argc, char * * argv) Line 183 C++
[External code]

__My output.txt

output.txt