Aug 30 20:55:39.830 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#545f22340f72ee0efaf6463efb43a2840e3d35db for pr-53699
Aug 30 20:55:39.830 INFO running: cargo +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets
Aug 30 20:55:39.830 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53699/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53699/worker-3/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 20:55:40.030 INFO blam! c7c90159e38ae9f6a14bbf553dade0d123ba0d837ad9e3faeff0fe3e9da87306
Aug 30 20:55:40.032 INFO running `"docker" "start" "-a" "c7c90159e38ae9f6a14bbf553dade0d123ba0d837ad9e3faeff0fe3e9da87306"`
Aug 30 20:55:40.764 INFO kablam!    Compiling core_collections v0.3.20170409
Aug 30 20:55:42.185 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Aug 30 20:55:42.185 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-20dcf6f6d4aefdaa/build-script-build` (exit code: 101)
Aug 30 20:55:42.185 INFO kablam! --- stderr
Aug 30 20:55:42.185 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1000:5
Aug 30 20:55:42.185 INFO kablam! stack backtrace:
Aug 30 20:55:42.185 INFO kablam!    0:     0x55dd13a1661e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hb14c0e50253b2613
Aug 30 20:55:42.185 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Aug 30 20:55:42.185 INFO kablam!    1:     0x55dd13a084b6 - std::sys_common::backtrace::print::h6350b89a6173f177
Aug 30 20:55:42.185 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Aug 30 20:55:42.185 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Aug 30 20:55:42.185 INFO kablam!    2:     0x55dd13a06e2d - std::panicking::default_hook::{{closure}}::h0d296196459c0d68
Aug 30 20:55:42.185 INFO kablam!                                at libstd/panicking.rs:211
Aug 30 20:55:42.186 INFO kablam!    3:     0x55dd13a06ba0 - std::panicking::default_hook::h3b75ddcdb4e292c2
Aug 30 20:55:42.186 INFO kablam!                                at libstd/panicking.rs:227
Aug 30 20:55:42.186 INFO kablam!    4:     0x55dd13a073ec - std::panicking::rust_panic_with_hook::h78c3f66b7bf47c8e
Aug 30 20:55:42.186 INFO kablam!                                at libstd/panicking.rs:476
Aug 30 20:55:42.186 INFO kablam!    5:     0x55dd13a06fe9 - std::panicking::continue_panic_fmt::h0dca0000433d53cd
Aug 30 20:55:42.186 INFO kablam!                                at libstd/panicking.rs:390
Aug 30 20:55:42.186 INFO kablam!    6:     0x55dd13a06ee5 - rust_begin_unwind
Aug 30 20:55:42.186 INFO kablam!                                at libstd/panicking.rs:325
Aug 30 20:55:42.186 INFO kablam!    7:     0x55dd13a57b7b - core::panicking::panic_fmt::h6a491d71a4e1ea85
Aug 30 20:55:42.186 INFO kablam!                                at libcore/panicking.rs:77
Aug 30 20:55:42.186 INFO kablam!    8:     0x55dd13a52f61 - core::option::expect_failed::hc82fbbc5aa9232de
Aug 30 20:55:42.186 INFO kablam!                                at libcore/option.rs:1000
Aug 30 20:55:42.186 INFO kablam!    9:     0x55dd139e63e3 - <core::option::Option<T>>::expect::h7fd89c640c7b35f2
Aug 30 20:55:42.186 INFO kablam!                                at /checkout/src/libcore/option.rs:312
Aug 30 20:55:42.186 INFO kablam!   10:     0x55dd139e45c5 - build_script_build::main::h922e5c39bfed7ad4
Aug 30 20:55:42.186 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Aug 30 20:55:42.186 INFO kablam!   11:     0x55dd139e5b1f - std::rt::lang_start::{{closure}}::h16b8b0b6f1cdc436
Aug 30 20:55:42.186 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Aug 30 20:55:42.186 INFO kablam!   12:     0x55dd13a06ed2 - std::panicking::try::do_call::heda1385a4d443830
Aug 30 20:55:42.187 INFO kablam!                                at libstd/rt.rs:59
Aug 30 20:55:42.187 INFO kablam!                                at libstd/panicking.rs:310
Aug 30 20:55:42.187 INFO kablam!   13:     0x55dd13a287e9 - __rust_maybe_catch_panic
Aug 30 20:55:42.187 INFO kablam!                                at libpanic_unwind/lib.rs:102
Aug 30 20:55:42.187 INFO kablam!   14:     0x55dd13a12225 - std::rt::lang_start_internal::h92d079b55bc853f9
Aug 30 20:55:42.187 INFO kablam!                                at libstd/panicking.rs:289
Aug 30 20:55:42.187 INFO kablam!                                at libstd/panic.rs:392
Aug 30 20:55:42.187 INFO kablam!                                at libstd/rt.rs:58
Aug 30 20:55:42.187 INFO kablam!   15:     0x55dd139e5af7 - std::rt::lang_start::ha8e8d59258b5f9a3
Aug 30 20:55:42.187 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Aug 30 20:55:42.187 INFO kablam!   16:     0x55dd139e4db9 - main
Aug 30 20:55:42.187 INFO kablam!   17:     0x7f250578c82f - __libc_start_main
Aug 30 20:55:42.187 INFO kablam!   18:     0x55dd139de388 - _start
Aug 30 20:55:42.187 INFO kablam!   19:                0x0 - <unknown>
Aug 30 20:55:42.187 INFO kablam! 
Aug 30 20:55:42.187 INFO kablam! su: No module specific data is present
Aug 30 20:55:42.640 INFO running `"docker" "rm" "-f" "c7c90159e38ae9f6a14bbf553dade0d123ba0d837ad9e3faeff0fe3e9da87306"`
Aug 30 20:55:42.755 INFO blam! c7c90159e38ae9f6a14bbf553dade0d123ba0d837ad9e3faeff0fe3e9da87306