Sep 21 11:55:39.258 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 11:55:39.258 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 11:55:39.258 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-7/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 11:55:39.434 INFO blam! f75b245c574a0dbcfdb6c286fc2344eefbd8a4c79e6badb1d719e9ad93cdeb33
Sep 21 11:55:39.436 INFO running `"docker" "start" "-a" "f75b245c574a0dbcfdb6c286fc2344eefbd8a4c79e6badb1d719e9ad93cdeb33"`
Sep 21 11:55:40.535 INFO kablam! usermod: no changes
Sep 21 11:55:40.566 INFO kablam!    Compiling core_collections v0.3.20170409
Sep 21 11:55:41.322 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Sep 21 11:55:41.322 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-89a03f09e73cfc9f/build-script-build` (exit code: 101)
Sep 21 11:55:41.322 INFO kablam! --- stderr
Sep 21 11:55:41.322 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1010:5
Sep 21 11:55:41.322 INFO kablam! stack backtrace:
Sep 21 11:55:41.322 INFO kablam!    0:     0x5598506c94de - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h8364381a6315579e
Sep 21 11:55:41.322 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 21 11:55:41.322 INFO kablam!    1:     0x5598506bd5e6 - std::sys_common::backtrace::print::hbf206e386958691c
Sep 21 11:55:41.322 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 21 11:55:41.322 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 21 11:55:41.322 INFO kablam!    2:     0x5598506bbf8d - std::panicking::default_hook::{{closure}}::hdfbe128a3d24757d
Sep 21 11:55:41.322 INFO kablam!                                at libstd/panicking.rs:211
Sep 21 11:55:41.322 INFO kablam!    3:     0x5598506bbd00 - std::panicking::default_hook::h7fe1685957f6b205
Sep 21 11:55:41.322 INFO kablam!                                at libstd/panicking.rs:227
Sep 21 11:55:41.322 INFO kablam!    4:     0x5598506bc54c - std::panicking::rust_panic_with_hook::h67471ab114b25df3
Sep 21 11:55:41.322 INFO kablam!                                at libstd/panicking.rs:477
Sep 21 11:55:41.322 INFO kablam!    5:     0x5598506bc149 - std::panicking::continue_panic_fmt::hccb547c7e8ba6430
Sep 21 11:55:41.322 INFO kablam!                                at libstd/panicking.rs:391
Sep 21 11:55:41.322 INFO kablam!    6:     0x5598506bc045 - rust_begin_unwind
Sep 21 11:55:41.322 INFO kablam!                                at libstd/panicking.rs:326
Sep 21 11:55:41.322 INFO kablam!    7:     0x55985070490b - core::panicking::panic_fmt::ha96969d716d5d4fe
Sep 21 11:55:41.322 INFO kablam!                                at libcore/panicking.rs:77
Sep 21 11:55:41.322 INFO kablam!    8:     0x559850704981 - core::option::expect_failed::h80a3fc8b32acc7ef
Sep 21 11:55:41.322 INFO kablam!                                at libcore/option.rs:1010
Sep 21 11:55:41.322 INFO kablam!    9:     0x559850698413 - <core::option::Option<T>>::expect::h34cd346436cbf384
Sep 21 11:55:41.322 INFO kablam!                                at libcore/option.rs:322
Sep 21 11:55:41.322 INFO kablam!   10:     0x5598506965ff - build_script_build::main::he52769a93c7c7be5
Sep 21 11:55:41.322 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Sep 21 11:55:41.322 INFO kablam!   11:     0x559850697b4f - std::rt::lang_start::{{closure}}::hb6e91aa1741a5ee0
Sep 21 11:55:41.322 INFO kablam!                                at libstd/rt.rs:74
Sep 21 11:55:41.322 INFO kablam!   12:     0x5598506bc032 - std::panicking::try::do_call::hba3cdd40b2f76c63
Sep 21 11:55:41.322 INFO kablam!                                at libstd/rt.rs:59
Sep 21 11:55:41.322 INFO kablam!                                at libstd/panicking.rs:310
Sep 21 11:55:41.322 INFO kablam!   13:     0x5598506da069 - __rust_maybe_catch_panic
Sep 21 11:55:41.322 INFO kablam!                                at libpanic_unwind/lib.rs:102
Sep 21 11:55:41.322 INFO kablam!   14:     0x5598506c60f5 - std::rt::lang_start_internal::ha318b532168af217
Sep 21 11:55:41.322 INFO kablam!                                at libstd/panicking.rs:289
Sep 21 11:55:41.322 INFO kablam!                                at libstd/panic.rs:392
Sep 21 11:55:41.322 INFO kablam!                                at libstd/rt.rs:58
Sep 21 11:55:41.322 INFO kablam!   15:     0x559850697b27 - std::rt::lang_start::h6d814b25c7b35299
Sep 21 11:55:41.322 INFO kablam!                                at libstd/rt.rs:74
Sep 21 11:55:41.322 INFO kablam!   16:     0x559850696de9 - main
Sep 21 11:55:41.322 INFO kablam!   17:     0x7f6f2a96682f - __libc_start_main
Sep 21 11:55:41.322 INFO kablam!   18:     0x5598506903c8 - _start
Sep 21 11:55:41.322 INFO kablam!   19:                0x0 - <unknown>
Sep 21 11:55:41.322 INFO kablam! 
Sep 21 11:55:41.323 INFO kablam! su: No module specific data is present
Sep 21 11:55:42.156 INFO running `"docker" "rm" "-f" "f75b245c574a0dbcfdb6c286fc2344eefbd8a4c79e6badb1d719e9ad93cdeb33"`
Sep 21 11:55:42.206 INFO blam! f75b245c574a0dbcfdb6c286fc2344eefbd8a4c79e6badb1d719e9ad93cdeb33