internal compiler error: unexpected failure

[recrack]

emit_test.rs:2:29: 2:30 error: expected ;, ,, or '}' but found ]
rust: task failed at 'explicit failure', /home/ymin/share/rust/rust/src/libsyntax/diagnostic.rs:76
/usr/local/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_j+0x5a)[0xb639447a]
/usr/local/bin/../lib/librustrt.so(rust_task_fail+0x36)[0xb6394576]
/usr/local/bin/../lib/librustrt.so(_ZN9rust_task4failEPKcS1_j+0x32)[0xb63945e2]
/usr/local/bin/../lib/librustrt.so(upcall_s_fail+0x53)[0xb63968c3]
/usr/local/bin/../lib/librustrt.so(+0x2c50f)[0xb63a950f]
/usr/local/bin/../lib/librustrt.so(upcall_fail+0x194)[0xb6396f64]
/usr/local/bin/../lib/librustrt.so(rust_upcall_fail+0x2b)[0xb63970ab]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(_ZN3sys6rustrt16rust_upcall_fail17_2125106fcaa29fbc3_06E+0x45)[0xb75996d5]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xa981b)[0xb759981b]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x2e4a6)[0xb751e4a6]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN10diagnostic14__extensions__9meth_780810span_fatal16_b05437697ec35ae3_06E+0x168)[0xb6fb2918]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(+0xe5ce6)[0xb704ece6]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN5parse6parser14__extensions__10meth_1741723parse_single_class_item16_439015ca4f242ae3_06E+0x1042)[0xb709ddb2]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN5parse6parser14__extensions__10meth_1736616parse_class_item16_d78ed5c699029a03_06E+0x351)[0xb709c811]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN5parse6parser14__extensions__10meth_1735617parse_item_struct17_87751baf83596d2c3_06E+0x50c)[0xb709a4dc]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN5parse6parser14__extensions__10meth_1705023parse_item_or_view_item17_c05857569e8617c73_06E+0x3350)[0xb708b910]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN5parse6parser14__extensions__10meth_1709426parse_items_and_view_items16_23cea2b79d5bb713_06E+0x73d)[0xb709236d]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN5parse6parser14__extensions__10meth_1743715parse_mod_items17_397d33995d71108f3_06E+0x156)[0xb709ec56]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(+0x253718)[0xb71bc718]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN5parse6parser14__extensions__10meth_1780715parse_crate_mod17_6abb7f967df777d83_06E+0x1ae)[0xb70b32de]
/usr/local/bin/../lib/libsyntax-84efebcb12c867a2-0.6.so(_ZN5parse21parse_crate_from_file17_6634abc3aa5bed133_06E+0x6d)[0xb70db3ad]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6driver6driver11parse_input16_be7c8277156e4723_06E+0x194)[0xb6ce5224]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(+0x91117b)[0xb6ceb17b]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(+0x910ff2)[0xb6ceaff2]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6driver6driver12compile_upto17_e1a3304fcc853e843_06E+0x219)[0xb6ce55e9]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(+0x9543d8)[0xb6d2e3d8]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6driver6driver13compile_input16_3b8410e4fe3cae63_06E+0xbb)[0xb6cec97b]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN12run_compiler16_57517901b784d973_06E+0x2b0b)[0xb6d2648b]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(+0x9543d8)[0xb6d2e3d8]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(+0x954132)[0xb6d2e132]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(+0x952e27)[0xb6d2ce27]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(+0x951c0d)[0xb6d2bc0d]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x7b84c)[0xb756b84c]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xbeeac)[0xb75aeeac]
/usr/local/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x31)[0xb6394e01]
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug
note: try running with RUST_LOG=rustc=1,::rt::backtrace to get further details and report the results to github.com/mozilla/rust/issues
rust: task failed at 'explicit failure', /home/ymin/share/rust/rust/src/librustc/rustc.rc:429
/usr/local/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_j+0x5a)[0xb639447a]
/usr/local/bin/../lib/librustrt.so(rust_task_fail+0x36)[0xb6394576]
/usr/local/bin/../lib/librustrt.so(_ZN9rust_task4failEPKcS1_j+0x32)[0xb63945e2]
/usr/local/bin/../lib/librustrt.so(upcall_s_fail+0x53)[0xb63968c3]
/usr/local/bin/../lib/librustrt.so(+0x2c50f)[0xb63a950f]
/usr/local/bin/../lib/librustrt.so(upcall_fail+0x194)[0xb6396f64]
/usr/local/bin/../lib/librustrt.so(rust_upcall_fail+0x2b)[0xb63970ab]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(_ZN3sys6rustrt16rust_upcall_fail17_2125106fcaa29fbc3_06E+0x45)[0xb75996d5]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xa981b)[0xb759981b]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x2e4a6)[0xb751e4a6]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xbeeac)[0xb75aeeac]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN7monitor15_d64c2677b1aaef3_06E+0x2d4c)[0xb6d2aacc]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(+0x9543d8)[0xb6d2e3d8]
/usr/local/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN4main16_2fb85b4a659c4103_06E+0x85)[0xb6d2e055]
rustc(_rust_main+0x31)[0x8048941]
/usr/local/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x31)[0xb6394e01]
rust: domain main @0x8d904e8 root task failed
rust: task failed at 'killed', /home/ymin/share/rust/rust/src/libcore/task/mod.rs:577
/usr/local/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_j+0x5a)[0xb639447a]
/usr/local/bin/../lib/librustrt.so(rust_task_fail+0x36)[0xb6394576]
/usr/local/bin/../lib/librustrt.so(_ZN9rust_task4failEPKcS1_j+0x32)[0xb63945e2]
/usr/local/bin/../lib/librustrt.so(upcall_s_fail+0x53)[0xb63968c3]
/usr/local/bin/../lib/librustrt.so(+0x2c50f)[0xb63a950f]
/usr/local/bin/../lib/librustrt.so(upcall_fail+0x194)[0xb6396f64]
/usr/local/bin/../lib/librustrt.so(rust_upcall_fail+0x2b)[0xb63970ab]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(_ZN3sys6rustrt16rust_upcall_fail17_2125106fcaa29fbc3_06E+0x45)[0xb75996d5]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xa981b)[0xb759981b]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x2e4a6)[0xb751e4a6]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(_ZN4task5yield17_56812fae66173efd3_06E+0xc8)[0xb7550108]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x979f9)[0xb75879f9]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(_ZN7private11weaken_task17_abd63738108cf6463_06E+0xdb)[0xb758782b]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x976f6)[0xb75876f6]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x94fa0)[0xb7584fa0]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xbeeac)[0xb75aeeac]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x7b84c)[0xb756b84c]
/usr/local/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xbeeac)[0xb75aeeac]
/usr/local/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x31)[0xb6394e01]

[recrack]

to reproduce : https://gist.github.com/recrack/0973fbd65e671594744d

[recrack]

This error seems to be my local development problem.