#0  0x00007ffff32aafb1 in uv_timer_stop () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/librustrt.so
#1  0x00007ffff32ab712 in uv__run_timers () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/librustrt.so
#2  0x00007ffff32a3ede in uv_run () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/librustrt.so
#3  0x00007ffff6e007b5 in rust_uv_run__c_stack_shim () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libextra-a7c050cfd46b2c9a-0.8-pre.so
#4  0x00007ffff32a3799 in __morestack () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/librustrt.so
#5  0x00007ffff3293b4c in call_on_c_stack (fn_ptr=0x7ffff6e00770 <rust_uv_run__c_stack_shim>, args=0x7fffd02024d0, this=0x8d8970) at /home/tom/servo/src/compiler/rust/src/rt/rust_task.h:481
#6  upcall_call_shim_on_c_stack (args=0x7fffd02024d0, fn_ptr=0x7ffff6e00770 <rust_uv_run__c_stack_shim>) at /home/tom/servo/src/compiler/rust/src/rt/rust_upcall.cpp:70
#7  0x00007ffff6e00767 in uv_ll::rust_uv_run::_844b558e1e59a9dc::_0$x2e8$x2dpre () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libextra-a7c050cfd46b2c9a-0.8-pre.so
#8  0x00007ffff6e041c2 in uv_ll::run::_818ac392252a25f::_0$x2e8$x2dpre () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libextra-a7c050cfd46b2c9a-0.8-pre.so
#9  0x00007ffff6f230a0 in uv_iotask::run_loop::_92c9751d71e548::_0$x2e8$x2dpre () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libextra-a7c050cfd46b2c9a-0.8-pre.so
#10 0x00007ffff6f1e991 in uv_iotask::spawn_iotask::anon::expr_fn_21803 () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libextra-a7c050cfd46b2c9a-0.8-pre.so
#11 0x00007ffff6f4632a in uv_global_loop::spawn_loop::anon::anon::anon::expr_fn_23320 ()
   from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libextra-a7c050cfd46b2c9a-0.8-pre.so
#12 0x00007ffff7862ea3 in unstable::weak_task::weaken_task::anon::expr_fn_23810 () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-6c65cf4b443341b1-0.8-pre.so
#13 0x00007ffff77be681 in unstable::finally::__extensions__::finally_17021::_199ab8d6eb226980::_0$x2e8$x2dpre ()
   from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-6c65cf4b443341b1-0.8-pre.so
#14 0x00007ffff78557a7 in unstable::weak_task::weaken_task::_766dc15aefb9a698::_0$x2e8$x2dpre ()
   from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-6c65cf4b443341b1-0.8-pre.so
#15 0x00007ffff78dfed0 in __morestack () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-6c65cf4b443341b1-0.8-pre.so
#16 0x00007ffff6f460af in uv_global_loop::spawn_loop::anon::anon::expr_fn_23308 () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libextra-a7c050cfd46b2c9a-0.8-pre.so
#17 0x00007ffff77de2a5 in task::spawn::spawn_raw_oldsched::make_child_wrapper::anon::expr_fn_18675 ()
   from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-6c65cf4b443341b1-0.8-pre.so
#18 0x00007ffff78dfed0 in __morestack () from /home/tom/servo/build/src/compiler/rust/x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-6c65cf4b443341b1-0.8-pre.so
#19 0x00007ffff3292a2b in task_start_wrapper (a=0x8de970) at /home/tom/servo/src/compiler/rust/src/rt/rust_task.cpp:164
#20 0x0000000000000000 in ?? ()