Sep 14 18:10:27.212 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 18:10:27.212 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 18:10:27.212 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-6/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/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 +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 18:10:27.420 INFO blam! 764e77d34d5213c7e27996053f8f558b0bc5f5a93cf97ba7be3f8e14c695c83b
Sep 14 18:10:27.421 INFO running `"docker" "start" "-a" "764e77d34d5213c7e27996053f8f558b0bc5f5a93cf97ba7be3f8e14c695c83b"`
Sep 14 18:10:28.125 INFO kablam! usermod: no changes
Sep 14 18:10:28.238 INFO kablam!    Compiling core_collections v0.3.20170409
Sep 14 18:10:29.510 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Sep 14 18:10:29.510 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-3b92001329fa7982/build-script-build` (exit code: 101)
Sep 14 18:10:29.510 INFO kablam! --- stderr
Sep 14 18:10:29.510 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1000:5
Sep 14 18:10:29.510 INFO kablam! stack backtrace:
Sep 14 18:10:29.510 INFO kablam!    0:     0x55e2c52362fe - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hf74b7486aef10c8d
Sep 14 18:10:29.510 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 14 18:10:29.510 INFO kablam!    1:     0x55e2c52281b6 - std::sys_common::backtrace::print::h975e2d3548a0dd13
Sep 14 18:10:29.510 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 14 18:10:29.510 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 14 18:10:29.510 INFO kablam!    2:     0x55e2c5226b5d - std::panicking::default_hook::{{closure}}::h3e9ae6698e7d3880
Sep 14 18:10:29.511 INFO kablam!                                at libstd/panicking.rs:211
Sep 14 18:10:29.511 INFO kablam!    3:     0x55e2c52268d0 - std::panicking::default_hook::h0f94f2ff4ea79253
Sep 14 18:10:29.511 INFO kablam!                                at libstd/panicking.rs:227
Sep 14 18:10:29.511 INFO kablam!    4:     0x55e2c522711c - std::panicking::rust_panic_with_hook::h3122ef85eb8796fa
Sep 14 18:10:29.511 INFO kablam!                                at libstd/panicking.rs:477
Sep 14 18:10:29.511 INFO kablam!    5:     0x55e2c5226d19 - std::panicking::continue_panic_fmt::h79b5d1783fc7275d
Sep 14 18:10:29.511 INFO kablam!                                at libstd/panicking.rs:391
Sep 14 18:10:29.511 INFO kablam!    6:     0x55e2c5226c15 - rust_begin_unwind
Sep 14 18:10:29.511 INFO kablam!                                at libstd/panicking.rs:326
Sep 14 18:10:29.511 INFO kablam!    7:     0x55e2c52768cb - core::panicking::panic_fmt::hb924789bc7f51233
Sep 14 18:10:29.511 INFO kablam!                                at libcore/panicking.rs:77
Sep 14 18:10:29.511 INFO kablam!    8:     0x55e2c5271d01 - core::option::expect_failed::hb471dc44cb0c94ec
Sep 14 18:10:29.511 INFO kablam!                                at libcore/option.rs:1000
Sep 14 18:10:29.511 INFO kablam!    9:     0x55e2c52053b3 - <core::option::Option<T>>::expect::h4f891460163f4a72
Sep 14 18:10:29.511 INFO kablam!                                at /checkout/src/libcore/option.rs:312
Sep 14 18:10:29.511 INFO kablam!   10:     0x55e2c520359f - build_script_build::main::hfc383f0cbd06895e
Sep 14 18:10:29.511 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Sep 14 18:10:29.511 INFO kablam!   11:     0x55e2c5204aef - std::rt::lang_start::{{closure}}::had100539549faae4
Sep 14 18:10:29.511 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 14 18:10:29.511 INFO kablam!   12:     0x55e2c5226c02 - std::panicking::try::do_call::h613cc8345e5e334f
Sep 14 18:10:29.511 INFO kablam!                                at libstd/rt.rs:59
Sep 14 18:10:29.511 INFO kablam!                                at libstd/panicking.rs:310
Sep 14 18:10:29.511 INFO kablam!   13:     0x55e2c5247859 - __rust_maybe_catch_panic
Sep 14 18:10:29.511 INFO kablam!                                at libpanic_unwind/lib.rs:102
Sep 14 18:10:29.511 INFO kablam!   14:     0x55e2c5231f65 - std::rt::lang_start_internal::h166c3316158aaef7
Sep 14 18:10:29.511 INFO kablam!                                at libstd/panicking.rs:289
Sep 14 18:10:29.511 INFO kablam!                                at libstd/panic.rs:392
Sep 14 18:10:29.511 INFO kablam!                                at libstd/rt.rs:58
Sep 14 18:10:29.511 INFO kablam!   15:     0x55e2c5204ac7 - std::rt::lang_start::he5946cb559d151dd
Sep 14 18:10:29.511 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Sep 14 18:10:29.511 INFO kablam!   16:     0x55e2c5203d89 - main
Sep 14 18:10:29.511 INFO kablam!   17:     0x7f3d516a482f - __libc_start_main
Sep 14 18:10:29.511 INFO kablam!   18:     0x55e2c51fd368 - _start
Sep 14 18:10:29.511 INFO kablam!   19:                0x0 - <unknown>
Sep 14 18:10:29.511 INFO kablam! 
Sep 14 18:10:29.512 INFO kablam! su: No module specific data is present
Sep 14 18:10:30.234 INFO running `"docker" "rm" "-f" "764e77d34d5213c7e27996053f8f558b0bc5f5a93cf97ba7be3f8e14c695c83b"`
Sep 14 18:10:30.295 INFO blam! 764e77d34d5213c7e27996053f8f558b0bc5f5a93cf97ba7be3f8e14c695c83b