Sep 04 23:45:37.479 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 04 23:45:37.479 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 04 23:45:37.479 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-3/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 23:45:37.622 INFO blam! 5ada85c21a9c5cfcf676f692ce0fd9d9a6acd242a19f83086651b42c51a89973
Sep 04 23:45:37.624 INFO running `"docker" "start" "-a" "5ada85c21a9c5cfcf676f692ce0fd9d9a6acd242a19f83086651b42c51a89973"`
Sep 04 23:45:38.356 INFO kablam!    Compiling core_collections v0.3.20170409
Sep 04 23:45:39.526 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Sep 04 23:45:39.526 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-a9e3c02e43920e59/build-script-build` (exit code: 101)
Sep 04 23:45:39.526 INFO kablam! --- stderr
Sep 04 23:45:39.526 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1000:5
Sep 04 23:45:39.526 INFO kablam! stack backtrace:
Sep 04 23:45:39.526 INFO kablam!    0:     0x555b999c137e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::he41721e5d0bd3faa
Sep 04 23:45:39.526 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 04 23:45:39.526 INFO kablam!    1:     0x555b999b3276 - std::sys_common::backtrace::print::h27d79f31b374d779
Sep 04 23:45:39.526 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 04 23:45:39.526 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 04 23:45:39.526 INFO kablam!    2:     0x555b999b1bcd - std::panicking::default_hook::{{closure}}::h4c06e4d4f39d0ae6
Sep 04 23:45:39.526 INFO kablam!                                at libstd/panicking.rs:211
Sep 04 23:45:39.526 INFO kablam!    3:     0x555b999b1940 - std::panicking::default_hook::hf063f386db7b68b7
Sep 04 23:45:39.526 INFO kablam!                                at libstd/panicking.rs:227
Sep 04 23:45:39.526 INFO kablam!    4:     0x555b999b218c - std::panicking::rust_panic_with_hook::h3b35cb326944f60c
Sep 04 23:45:39.526 INFO kablam!                                at libstd/panicking.rs:477
Sep 04 23:45:39.526 INFO kablam!    5:     0x555b999b1d89 - std::panicking::continue_panic_fmt::h49dc352af3909309
Sep 04 23:45:39.526 INFO kablam!                                at libstd/panicking.rs:391
Sep 04 23:45:39.526 INFO kablam!    6:     0x555b999b1c85 - rust_begin_unwind
Sep 04 23:45:39.526 INFO kablam!                                at libstd/panicking.rs:326
Sep 04 23:45:39.526 INFO kablam!    7:     0x555b99a0194b - core::panicking::panic_fmt::hdb6dd09fce168bd1
Sep 04 23:45:39.526 INFO kablam!                                at libcore/panicking.rs:77
Sep 04 23:45:39.526 INFO kablam!    8:     0x555b999fcd71 - core::option::expect_failed::hcd37c144d2f1bffe
Sep 04 23:45:39.526 INFO kablam!                                at libcore/option.rs:1000
Sep 04 23:45:39.526 INFO kablam!    9:     0x555b999903b3 - <core::option::Option<T>>::expect::hb7797d2ad8e64ab1
Sep 04 23:45:39.526 INFO kablam!                                at /checkout/src/libcore/option.rs:312
Sep 04 23:45:39.526 INFO kablam!   10:     0x555b9998e59f - build_script_build::main::hee0546fc8d966e83
Sep 04 23:45:39.526 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Sep 04 23:45:39.526 INFO kablam!   11:     0x555b9998faef - std::rt::lang_start::{{closure}}::ha570670d1d0aa3e7
Sep 04 23:45:39.526 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 04 23:45:39.526 INFO kablam!   12:     0x555b999b1c72 - std::panicking::try::do_call::h1a26d0ebba7bf7c2
Sep 04 23:45:39.526 INFO kablam!                                at libstd/rt.rs:59
Sep 04 23:45:39.526 INFO kablam!                                at libstd/panicking.rs:310
Sep 04 23:45:39.526 INFO kablam!   13:     0x555b999d28c9 - __rust_maybe_catch_panic
Sep 04 23:45:39.527 INFO kablam!                                at libpanic_unwind/lib.rs:103
Sep 04 23:45:39.527 INFO kablam!   14:     0x555b999bcf85 - std::rt::lang_start_internal::h8b333a0a439d0823
Sep 04 23:45:39.527 INFO kablam!                                at libstd/panicking.rs:289
Sep 04 23:45:39.527 INFO kablam!                                at libstd/panic.rs:392
Sep 04 23:45:39.527 INFO kablam!                                at libstd/rt.rs:58
Sep 04 23:45:39.527 INFO kablam!   15:     0x555b9998fac7 - std::rt::lang_start::h062e9fe35ed6c27a
Sep 04 23:45:39.527 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 04 23:45:39.527 INFO kablam!   16:     0x555b9998ed89 - main
Sep 04 23:45:39.527 INFO kablam!   17:     0x7f7d3648082f - __libc_start_main
Sep 04 23:45:39.527 INFO kablam!   18:     0x555b99988368 - _start
Sep 04 23:45:39.527 INFO kablam!   19:                0x0 - <unknown>
Sep 04 23:45:39.527 INFO kablam! 
Sep 04 23:45:39.527 INFO kablam! su: No module specific data is present
Sep 04 23:45:39.981 INFO running `"docker" "rm" "-f" "5ada85c21a9c5cfcf676f692ce0fd9d9a6acd242a19f83086651b42c51a89973"`
Sep 04 23:45:40.076 INFO blam! 5ada85c21a9c5cfcf676f692ce0fd9d9a6acd242a19f83086651b42c51a89973