(gdb) print inner_msg
Python Exception <class 'TypeError'> Could not convert Python object: None.:
Python Exception <class 'TypeError'> Could not convert Python object: None.:
Python Exception <class 'TypeError'> Could not convert Python object: None.:
$4 = {Common = {{CollectReports = {ReportsChan = {IpcSender<collections::vec::Vec<profile_traits::mem::Report>> = {os_sender = UnixSender = {fd = 488447261},
            phantom = PhantomData<collections::vec::Vec<profile_traits::mem::Report>>}}}, RefcountCleanup = {TrustedReference = {0x1d1d1d1d1d1d1d1d}}, RunnableMsg = {29, Box<Runnable>}}},
  DocumentLoadsComplete = {PipelineId = {namespace_id = PipelineNamespaceId = {488447261}, index = PipelineIndex = {488447261}}}, ExitWindow = {PipelineId = {namespace_id = PipelineNamespaceId = {488447261},
      index = PipelineIndex = {488447261}}}, MainThreadRunnableMsg = {Box<MainThreadRunnable>}, Navigate = {PipelineId = {namespace_id = PipelineNamespaceId = {488447261}, index = PipelineIndex = {488447261}},
Python Exception <class 'OverflowError'> signed integer is greater than maximum:
Python Exception <class 'TypeError'> Could not convert Python object: None.:
Python Exception <class 'OverflowError'> signed integer is greater than maximum:
Python Exception <class 'OverflowError'> signed integer is greater than maximum:
Python Exception <class 'TypeError'> Could not convert Python object: None.:
Python Exception <class 'OverflowError'> signed integer is greater than maximum:
    LoadData = {url = Url = {scheme = , scheme_data = {Relative = {RelativeSchemeData = {username = , password = Some = {}, host = {Domain = {}, Ipv4 = {Ipv4Addr = {inner = in_addr = {s_addr = 488447261}}},
                Ipv6 = {Ipv6Addr = {inner = in6_addr = {s6_addr = '\035' <repeats 16 times>, Python Exception <class 'TypeError'> Could not convert Python object: None.:
__align = 0x7fffc33f9e54}}}}, port = {(Some | unknown: 7452), Some = {Python Exception <class 'TypeError'> Could not convert Python object: None.:
7453}}, default_port = {
                (Some | unknown: 7452), Some = {