Rust build failure

Rust build failure

rust: upcall fail 'explicit failure', /home/rustbuild/src/rustbot/workspace-snap-stage3-x86_64-unknown-linux-gnu/src/src/libcore/run.rs:193
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(_ZN9rust_task4failEv+0x39)[0x407ff2f9]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(upcall_s_fail+0x7f)[0x4080227f]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(+0x2ba2f)[0x40815a2f]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(upcall_fail+0x11c)[0x408060fc]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/libcore-14bd852465126fe7-0.1.so(_ZN3run13start_program17_7bb4cfb4c42147b4E+0x11e)[0x4008127e]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/libcore-14bd852465126fe7-0.1.so(_ZN3run14program_output17_ccbd99aa2cad80d2E+0x49)[0x40081969]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustc-2384c9e5928f8c53-0.1.so(_ZN4back4link11link_binary17_c669d7cca4dd05b7E+0x4746)[0x404ef326]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustc-2384c9e5928f8c53-0.1.so(+0x4174f0)[0x405ca4f0]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustc-2384c9e5928f8c53-0.1.so(+0x3f8311)[0x405ab311]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustc-2384c9e5928f8c53-0.1.so(_ZN6driver6driver4time17_f282c93efbd9e825E+0x7a)[0x405a5a2a]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustc-2384c9e5928f8c53-0.1.so(_ZN6driver6driver12compile_upto17_42c1239d21fcc616E+0x2197)[0x405a83e7]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustc-2384c9e5928f8c53-0.1.so(_ZN6driver6driver13compile_input17_5dd15f63c72e9c51E+0xdd)[0x405ab3fd]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustc-2384c9e5928f8c53-0.1.so(+0x4174f0)[0x405ca4f0]
i686-unknown-linux-gnu/stage0/bin/rustc[0x804c121]
i686-unknown-linux-gnu/stage0/bin/rustc[0x804ee56]
i686-unknown-linux-gnu/stage0/bin/rustc[0x804e69a]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/libcore-14bd852465126fe7-0.1.so(+0x6d566)[0x4008e566]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/libcore-14bd852465126fe7-0.1.so(+0x6daa6)[0x4008eaa6]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x31)[0x40800271]
error: internal compiler error unexpected failure
note: The compiler hit an unexpected failure path. This is a bug. Try running with RUST_LOG=rustc=0,::rt::backtrace to get further details and report the results to github.com/mozilla/rust/issues
rust: upcall fail 'explicit failure', /home/rustbuild/src/rustbot/workspace-snap-stage3-x86_64-unknown-linux-gnu/src/src/rustc/driver/rustc.rs:180
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(_ZN9rust_task4failEv+0x39)[0x407ff2f9]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(upcall_s_fail+0x7f)[0x4080227f]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(+0x2ba2f)[0x40815a2f]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(upcall_fail+0x11c)[0x408060fc]
i686-unknown-linux-gnu/stage0/bin/rustc[0x804e3f2]
i686-unknown-linux-gnu/stage0/bin/rustc[0x804ed3d]
i686-unknown-linux-gnu/stage0/bin/rustc(_rust_main+0x38)[0x804eda8]
/home/ben/rust/i686-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x31)[0x40800271]
rust: domain main @0x9a59af8 root task failed
make: *** [i686-unknown-linux-gnu/stage0/lib/rustc/i686-unknown-linux-gnu/lib/librustc.so] Error 101