Sep 20 03:23:59.860 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 20 03:23:59.860 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 20 03:23:59.860 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-7/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/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 +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 03:24:00.032 INFO blam! c7d52f4a7fa994e9ff45cff2420e56a5a7b7e7599be03c5fe0178cc36c6432ba
Sep 20 03:24:00.035 INFO running `"docker" "start" "-a" "c7d52f4a7fa994e9ff45cff2420e56a5a7b7e7599be03c5fe0178cc36c6432ba"`
Sep 20 03:24:01.024 INFO kablam! usermod: no changes
Sep 20 03:24:01.083 INFO kablam!    Compiling core_collections v0.3.20170409
Sep 20 03:24:02.416 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Sep 20 03:24:02.416 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-1a020fab63c67f08/build-script-build` (exit code: 101)
Sep 20 03:24:02.416 INFO kablam! --- stderr
Sep 20 03:24:02.416 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1000:5
Sep 20 03:24:02.416 INFO kablam! stack backtrace:
Sep 20 03:24:02.416 INFO kablam!    0:     0x55e8d95dd15e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h30b7df3ff3ebc526
Sep 20 03:24:02.416 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 20 03:24:02.416 INFO kablam!    1:     0x55e8d95cf1b6 - std::sys_common::backtrace::print::hc6a3affd651da617
Sep 20 03:24:02.416 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 20 03:24:02.416 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 20 03:24:02.416 INFO kablam!    2:     0x55e8d95cdb5d - std::panicking::default_hook::{{closure}}::h24bcdc46ff1bdd94
Sep 20 03:24:02.416 INFO kablam!                                at libstd/panicking.rs:211
Sep 20 03:24:02.416 INFO kablam!    3:     0x55e8d95cd8d0 - std::panicking::default_hook::h5357f8ba3cb65742
Sep 20 03:24:02.416 INFO kablam!                                at libstd/panicking.rs:227
Sep 20 03:24:02.416 INFO kablam!    4:     0x55e8d95ce11c - std::panicking::rust_panic_with_hook::h65b641598223039e
Sep 20 03:24:02.416 INFO kablam!                                at libstd/panicking.rs:477
Sep 20 03:24:02.416 INFO kablam!    5:     0x55e8d95cdd19 - std::panicking::continue_panic_fmt::h192f6492adc3fcba
Sep 20 03:24:02.416 INFO kablam!                                at libstd/panicking.rs:391
Sep 20 03:24:02.416 INFO kablam!    6:     0x55e8d95cdc15 - rust_begin_unwind
Sep 20 03:24:02.416 INFO kablam!                                at libstd/panicking.rs:326
Sep 20 03:24:02.416 INFO kablam!    7:     0x55e8d96187bb - core::panicking::panic_fmt::h68a5235d7f22abeb
Sep 20 03:24:02.416 INFO kablam!                                at libcore/panicking.rs:77
Sep 20 03:24:02.416 INFO kablam!    8:     0x55e8d9618831 - core::option::expect_failed::hb3f78b7cd83d82f2
Sep 20 03:24:02.416 INFO kablam!                                at libcore/option.rs:1000
Sep 20 03:24:02.416 INFO kablam!    9:     0x55e8d95ac3b3 - <core::option::Option<T>>::expect::h58e9d93e53458815
Sep 20 03:24:02.416 INFO kablam!                                at libcore/option.rs:312
Sep 20 03:24:02.416 INFO kablam!   10:     0x55e8d95aa59f - build_script_build::main::h91ea63d6224a848e
Sep 20 03:24:02.416 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Sep 20 03:24:02.416 INFO kablam!   11:     0x55e8d95abaef - std::rt::lang_start::{{closure}}::hec50acadfe2bbb76
Sep 20 03:24:02.416 INFO kablam!                                at libstd/rt.rs:74
Sep 20 03:24:02.416 INFO kablam!   12:     0x55e8d95cdc02 - std::panicking::try::do_call::h817ce9e4aa46557f
Sep 20 03:24:02.417 INFO kablam!                                at libstd/rt.rs:59
Sep 20 03:24:02.417 INFO kablam!                                at libstd/panicking.rs:310
Sep 20 03:24:02.417 INFO kablam!   13:     0x55e8d95ee259 - __rust_maybe_catch_panic
Sep 20 03:24:02.417 INFO kablam!                                at libpanic_unwind/lib.rs:102
Sep 20 03:24:02.417 INFO kablam!   14:     0x55e8d95d8df5 - std::rt::lang_start_internal::h74522e2641913464
Sep 20 03:24:02.417 INFO kablam!                                at libstd/panicking.rs:289
Sep 20 03:24:02.417 INFO kablam!                                at libstd/panic.rs:392
Sep 20 03:24:02.417 INFO kablam!                                at libstd/rt.rs:58
Sep 20 03:24:02.417 INFO kablam!   15:     0x55e8d95abac7 - std::rt::lang_start::h516f86c84c238af2
Sep 20 03:24:02.417 INFO kablam!                                at libstd/rt.rs:74
Sep 20 03:24:02.417 INFO kablam!   16:     0x55e8d95aad89 - main
Sep 20 03:24:02.417 INFO kablam!   17:     0x7f9f8625b82f - __libc_start_main
Sep 20 03:24:02.417 INFO kablam!   18:     0x55e8d95a4368 - _start
Sep 20 03:24:02.417 INFO kablam!   19:                0x0 - <unknown>
Sep 20 03:24:02.417 INFO kablam! 
Sep 20 03:24:02.418 INFO kablam! su: No module specific data is present
Sep 20 03:24:03.223 INFO running `"docker" "rm" "-f" "c7d52f4a7fa994e9ff45cff2420e56a5a7b7e7599be03c5fe0178cc36c6432ba"`
Sep 20 03:24:03.302 INFO blam! c7d52f4a7fa994e9ff45cff2420e56a5a7b7e7599be03c5fe0178cc36c6432ba