Sep 01 07:29:48.900 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Sep 01 07:29:48.900 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Sep 01 07:29:48.900 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-1/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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 +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 07:29:49.102 INFO blam! c1602b7de285c6ce2498d429cabd9c4111ec3a82e47374107f2d18783b4f596a
Sep 01 07:29:49.104 INFO running `"docker" "start" "-a" "c1602b7de285c6ce2498d429cabd9c4111ec3a82e47374107f2d18783b4f596a"`
Sep 01 07:29:49.773 INFO kablam!    Compiling core_collections v0.3.20170409
Sep 01 07:29:51.164 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Sep 01 07:29:51.164 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-954c815875cd1aa5/build-script-build` (exit code: 101)
Sep 01 07:29:51.164 INFO kablam! --- stderr
Sep 01 07:29:51.164 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1000:5
Sep 01 07:29:51.164 INFO kablam! stack backtrace:
Sep 01 07:29:51.164 INFO kablam!    0:     0x55d7ff72160e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h8c3d0a2d42413513
Sep 01 07:29:51.164 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 01 07:29:51.164 INFO kablam!    1:     0x55d7ff7134b6 - std::sys_common::backtrace::print::h2501b31339c3d559
Sep 01 07:29:51.164 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 01 07:29:51.164 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 01 07:29:51.164 INFO kablam!    2:     0x55d7ff711e2d - std::panicking::default_hook::{{closure}}::h9550b067844d79de
Sep 01 07:29:51.164 INFO kablam!                                at libstd/panicking.rs:211
Sep 01 07:29:51.164 INFO kablam!    3:     0x55d7ff711ba0 - std::panicking::default_hook::h26bd688683b20acb
Sep 01 07:29:51.165 INFO kablam!                                at libstd/panicking.rs:227
Sep 01 07:29:51.165 INFO kablam!    4:     0x55d7ff7123ec - std::panicking::rust_panic_with_hook::h0967a90ee06b4501
Sep 01 07:29:51.165 INFO kablam!                                at libstd/panicking.rs:475
Sep 01 07:29:51.165 INFO kablam!    5:     0x55d7ff711fe9 - std::panicking::continue_panic_fmt::h2246084f996cae26
Sep 01 07:29:51.165 INFO kablam!                                at libstd/panicking.rs:390
Sep 01 07:29:51.165 INFO kablam!    6:     0x55d7ff711ee5 - rust_begin_unwind
Sep 01 07:29:51.165 INFO kablam!                                at libstd/panicking.rs:325
Sep 01 07:29:51.165 INFO kablam!    7:     0x55d7ff762bbb - core::panicking::panic_fmt::h59fbfb3be0fc609f
Sep 01 07:29:51.165 INFO kablam!                                at libcore/panicking.rs:77
Sep 01 07:29:51.165 INFO kablam!    8:     0x55d7ff75df61 - core::option::expect_failed::h23a3c5967a6b937c
Sep 01 07:29:51.165 INFO kablam!                                at libcore/option.rs:1000
Sep 01 07:29:51.165 INFO kablam!    9:     0x55d7ff6f13e3 - <core::option::Option<T>>::expect::h75989a6fc500da4c
Sep 01 07:29:51.165 INFO kablam!                                at /checkout/src/libcore/option.rs:312
Sep 01 07:29:51.165 INFO kablam!   10:     0x55d7ff6ef5c5 - build_script_build::main::h86d8d6f45fa33750
Sep 01 07:29:51.165 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Sep 01 07:29:51.165 INFO kablam!   11:     0x55d7ff6f0b1f - std::rt::lang_start::{{closure}}::hbcfc4c2826d04364
Sep 01 07:29:51.165 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 01 07:29:51.165 INFO kablam!   12:     0x55d7ff711ed2 - std::panicking::try::do_call::hc4206115bb2011fe
Sep 01 07:29:51.165 INFO kablam!                                at libstd/rt.rs:59
Sep 01 07:29:51.165 INFO kablam!                                at libstd/panicking.rs:310
Sep 01 07:29:51.166 INFO kablam!   13:     0x55d7ff733569 - __rust_maybe_catch_panic
Sep 01 07:29:51.166 INFO kablam!                                at libpanic_unwind/lib.rs:102
Sep 01 07:29:51.166 INFO kablam!   14:     0x55d7ff71d225 - std::rt::lang_start_internal::h0f4e93d8d2604488
Sep 01 07:29:51.166 INFO kablam!                                at libstd/panicking.rs:289
Sep 01 07:29:51.166 INFO kablam!                                at libstd/panic.rs:392
Sep 01 07:29:51.166 INFO kablam!                                at libstd/rt.rs:58
Sep 01 07:29:51.166 INFO kablam!   15:     0x55d7ff6f0af7 - std::rt::lang_start::h98e8e4ddc63b48d2
Sep 01 07:29:51.166 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 01 07:29:51.166 INFO kablam!   16:     0x55d7ff6efdb9 - main
Sep 01 07:29:51.166 INFO kablam!   17:     0x7fe003b2982f - __libc_start_main
Sep 01 07:29:51.166 INFO kablam!   18:     0x55d7ff6e9388 - _start
Sep 01 07:29:51.166 INFO kablam!   19:                0x0 - <unknown>
Sep 01 07:29:51.166 INFO kablam! 
Sep 01 07:29:51.166 INFO kablam! su: No module specific data is present
Sep 01 07:29:51.553 INFO running `"docker" "rm" "-f" "c1602b7de285c6ce2498d429cabd9c4111ec3a82e47374107f2d18783b4f596a"`
Sep 01 07:29:51.651 INFO blam! c1602b7de285c6ce2498d429cabd9c4111ec3a82e47374107f2d18783b4f596a