Sep 20 05:04:48.636 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against try#135b4cd023a753409d01e43b0f23d22a899feeeb for pr-54352
Sep 20 05:04:48.636 INFO running: cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets
Sep 20 05:04:48.636 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54352/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-5/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/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 +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 05:04:48.827 INFO blam! 700c6cb81bc5bd5431cc7002558ca7e4f65d86054a133339194f4e6be437c817
Sep 20 05:04:48.829 INFO running `"docker" "start" "-a" "700c6cb81bc5bd5431cc7002558ca7e4f65d86054a133339194f4e6be437c817"`
Sep 20 05:04:49.545 INFO kablam! usermod: no changes
Sep 20 05:04:49.605 INFO kablam!    Compiling core_collections v0.3.20170409
Sep 20 05:04:50.952 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Sep 20 05:04:50.952 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-140de91fabce0cb6/build-script-build` (exit code: 101)
Sep 20 05:04:50.952 INFO kablam! --- stderr
Sep 20 05:04:50.952 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1010:5
Sep 20 05:04:50.952 INFO kablam! stack backtrace:
Sep 20 05:04:50.952 INFO kablam!    0:     0x55b99f41215e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h060561e77e35d806
Sep 20 05:04:50.952 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 20 05:04:50.952 INFO kablam!    1:     0x55b99f4041b6 - std::sys_common::backtrace::print::haea7ed8a1bf250c8
Sep 20 05:04:50.952 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 20 05:04:50.952 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 20 05:04:50.952 INFO kablam!    2:     0x55b99f402b5d - std::panicking::default_hook::{{closure}}::h1005c8854e58be8d
Sep 20 05:04:50.952 INFO kablam!                                at libstd/panicking.rs:211
Sep 20 05:04:50.952 INFO kablam!    3:     0x55b99f4028d0 - std::panicking::default_hook::h79143d5863e2bd30
Sep 20 05:04:50.952 INFO kablam!                                at libstd/panicking.rs:227
Sep 20 05:04:50.952 INFO kablam!    4:     0x55b99f40311c - std::panicking::rust_panic_with_hook::hd9cae99f6e4776b8
Sep 20 05:04:50.952 INFO kablam!                                at libstd/panicking.rs:477
Sep 20 05:04:50.952 INFO kablam!    5:     0x55b99f402d19 - std::panicking::continue_panic_fmt::h446ccd7d316def28
Sep 20 05:04:50.952 INFO kablam!                                at libstd/panicking.rs:391
Sep 20 05:04:50.952 INFO kablam!    6:     0x55b99f402c15 - rust_begin_unwind
Sep 20 05:04:50.952 INFO kablam!                                at libstd/panicking.rs:326
Sep 20 05:04:50.952 INFO kablam!    7:     0x55b99f44d7bb - core::panicking::panic_fmt::h3ec28bb8c2735ad2
Sep 20 05:04:50.952 INFO kablam!                                at libcore/panicking.rs:77
Sep 20 05:04:50.952 INFO kablam!    8:     0x55b99f44d831 - core::option::expect_failed::hb8481d9d77799cef
Sep 20 05:04:50.952 INFO kablam!                                at libcore/option.rs:1010
Sep 20 05:04:50.952 INFO kablam!    9:     0x55b99f3e13b3 - <core::option::Option<T>>::expect::h5042e944280e1cd4
Sep 20 05:04:50.952 INFO kablam!                                at libcore/option.rs:322
Sep 20 05:04:50.952 INFO kablam!   10:     0x55b99f3df59f - build_script_build::main::h8731f17a0ed6b7cd
Sep 20 05:04:50.952 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Sep 20 05:04:50.952 INFO kablam!   11:     0x55b99f3e0aef - std::rt::lang_start::{{closure}}::hd4a7f78c4d19b256
Sep 20 05:04:50.952 INFO kablam!                                at libstd/rt.rs:74
Sep 20 05:04:50.952 INFO kablam!   12:     0x55b99f402c02 - std::panicking::try::do_call::had563038a207619d
Sep 20 05:04:50.952 INFO kablam!                                at libstd/rt.rs:59
Sep 20 05:04:50.952 INFO kablam!                                at libstd/panicking.rs:310
Sep 20 05:04:50.952 INFO kablam!   13:     0x55b99f422f19 - __rust_maybe_catch_panic
Sep 20 05:04:50.952 INFO kablam!                                at libpanic_unwind/lib.rs:102
Sep 20 05:04:50.952 INFO kablam!   14:     0x55b99f40ddf5 - std::rt::lang_start_internal::hcd623b62ef9a6b5e
Sep 20 05:04:50.952 INFO kablam!                                at libstd/panicking.rs:289
Sep 20 05:04:50.952 INFO kablam!                                at libstd/panic.rs:392
Sep 20 05:04:50.952 INFO kablam!                                at libstd/rt.rs:58
Sep 20 05:04:50.952 INFO kablam!   15:     0x55b99f3e0ac7 - std::rt::lang_start::h6b3159bd10357405
Sep 20 05:04:50.952 INFO kablam!                                at libstd/rt.rs:74
Sep 20 05:04:50.952 INFO kablam!   16:     0x55b99f3dfd89 - main
Sep 20 05:04:50.952 INFO kablam!   17:     0x7fbba413382f - __libc_start_main
Sep 20 05:04:50.952 INFO kablam!   18:     0x55b99f3d9368 - _start
Sep 20 05:04:50.952 INFO kablam!   19:                0x0 - <unknown>
Sep 20 05:04:50.952 INFO kablam! 
Sep 20 05:04:50.955 INFO kablam! su: No module specific data is present
Sep 20 05:04:51.731 INFO running `"docker" "rm" "-f" "700c6cb81bc5bd5431cc7002558ca7e4f65d86054a133339194f4e6be437c817"`
Sep 20 05:04:51.838 INFO blam! 700c6cb81bc5bd5431cc7002558ca7e4f65d86054a133339194f4e6be437c817