Sep 18 02:13:54.614 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 18 02:13:54.614 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 18 02:13:54.614 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-2/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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=1000" "-e" "CMD=cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 18 02:13:54.781 INFO blam! 6c8923ceb3661a073550607bf3e7a5f3685de39a8a2038705b92502673188de9
Sep 18 02:13:54.785 INFO running `"docker" "start" "-a" "6c8923ceb3661a073550607bf3e7a5f3685de39a8a2038705b92502673188de9"`
Sep 18 02:13:55.267 INFO kablam! usermod: no changes
Sep 18 02:13:55.304 INFO kablam!    Compiling core_collections v0.3.20170409
Sep 18 02:13:56.647 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Sep 18 02:13:56.647 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-d9739f7bd91be2bf/build-script-build` (exit code: 101)
Sep 18 02:13:56.648 INFO kablam! --- stderr
Sep 18 02:13:56.648 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1000:5
Sep 18 02:13:56.648 INFO kablam! stack backtrace:
Sep 18 02:13:56.648 INFO kablam!    0:     0x5615cc78016e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h3090ca1ed78cca71
Sep 18 02:13:56.648 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 18 02:13:56.648 INFO kablam!    1:     0x5615cc772266 - std::sys_common::backtrace::print::h99b72a5631242278
Sep 18 02:13:56.648 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 18 02:13:56.648 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 18 02:13:56.648 INFO kablam!    2:     0x5615cc770bbd - std::panicking::default_hook::{{closure}}::h54d3733129c11945
Sep 18 02:13:56.648 INFO kablam!                                at libstd/panicking.rs:211
Sep 18 02:13:56.648 INFO kablam!    3:     0x5615cc770930 - std::panicking::default_hook::h4009303414ec57d2
Sep 18 02:13:56.648 INFO kablam!                                at libstd/panicking.rs:227
Sep 18 02:13:56.648 INFO kablam!    4:     0x5615cc77117c - std::panicking::rust_panic_with_hook::h8475f7373e2a6a09
Sep 18 02:13:56.648 INFO kablam!                                at libstd/panicking.rs:477
Sep 18 02:13:56.648 INFO kablam!    5:     0x5615cc770d79 - std::panicking::continue_panic_fmt::h7c45cd8a330caec8
Sep 18 02:13:56.648 INFO kablam!                                at libstd/panicking.rs:391
Sep 18 02:13:56.648 INFO kablam!    6:     0x5615cc770c75 - rust_begin_unwind
Sep 18 02:13:56.648 INFO kablam!                                at libstd/panicking.rs:326
Sep 18 02:13:56.648 INFO kablam!    7:     0x5615cc7bb7cb - core::panicking::panic_fmt::h7db1097cb089945f
Sep 18 02:13:56.648 INFO kablam!                                at libcore/panicking.rs:77
Sep 18 02:13:56.648 INFO kablam!    8:     0x5615cc7bb841 - core::option::expect_failed::hdb54c0a28984384a
Sep 18 02:13:56.648 INFO kablam!                                at libcore/option.rs:1000
Sep 18 02:13:56.648 INFO kablam!    9:     0x5615cc74f3b3 - <core::option::Option<T>>::expect::he0d94393ece184a4
Sep 18 02:13:56.649 INFO kablam!                                at libcore/option.rs:312
Sep 18 02:13:56.649 INFO kablam!   10:     0x5615cc74d59f - build_script_build::main::h846368840aa46aae
Sep 18 02:13:56.649 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Sep 18 02:13:56.649 INFO kablam!   11:     0x5615cc74eaef - std::rt::lang_start::{{closure}}::h9fbbb42b13fdb90f
Sep 18 02:13:56.649 INFO kablam!                                at libstd/rt.rs:74
Sep 18 02:13:56.649 INFO kablam!   12:     0x5615cc770c62 - std::panicking::try::do_call::h4e106d51362d386b
Sep 18 02:13:56.649 INFO kablam!                                at libstd/rt.rs:59
Sep 18 02:13:56.649 INFO kablam!                                at libstd/panicking.rs:310
Sep 18 02:13:56.649 INFO kablam!   13:     0x5615cc790f29 - __rust_maybe_catch_panic
Sep 18 02:13:56.649 INFO kablam!                                at libpanic_unwind/lib.rs:102
Sep 18 02:13:56.649 INFO kablam!   14:     0x5615cc77be05 - std::rt::lang_start_internal::h38152e29cae9da90
Sep 18 02:13:56.649 INFO kablam!                                at libstd/panicking.rs:289
Sep 18 02:13:56.649 INFO kablam!                                at libstd/panic.rs:392
Sep 18 02:13:56.649 INFO kablam!                                at libstd/rt.rs:58
Sep 18 02:13:56.649 INFO kablam!   15:     0x5615cc74eac7 - std::rt::lang_start::h564cfce449fc303a
Sep 18 02:13:56.649 INFO kablam!                                at libstd/rt.rs:74
Sep 18 02:13:56.649 INFO kablam!   16:     0x5615cc74dd89 - main
Sep 18 02:13:56.649 INFO kablam!   17:     0x7f72676e282f - __libc_start_main
Sep 18 02:13:56.649 INFO kablam!   18:     0x5615cc747368 - _start
Sep 18 02:13:56.650 INFO kablam!   19:                0x0 - <unknown>
Sep 18 02:13:56.650 INFO kablam! 
Sep 18 02:13:56.650 INFO kablam! su: No module specific data is present
Sep 18 02:13:57.780 INFO running `"docker" "rm" "-f" "6c8923ceb3661a073550607bf3e7a5f3685de39a8a2038705b92502673188de9"`
Sep 18 02:13:57.930 INFO blam! 6c8923ceb3661a073550607bf3e7a5f3685de39a8a2038705b92502673188de9