Jul 12 11:50:24.958 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9 for pr-52234
Jul 12 11:50:24.958 INFO running: cargo +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets
Jul 12 11:50:24.958 INFO creating container for: cargo +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets
Jul 12 11:50:24.959 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-52234/master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-52234/worker-3/master#ae5b629efd79de78e6ba7ef493c32857bd7f9cf9:/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 +ae5b629efd79de78e6ba7ef493c32857bd7f9cf9-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Jul 12 11:50:25.198 INFO blam! 363f58f78c49a223c8bc21825abee3fa4fa9d1ebe64b514297d08e4c466fb0ec
Jul 12 11:50:25.200 INFO running `"docker" "start" "-a" "363f58f78c49a223c8bc21825abee3fa4fa9d1ebe64b514297d08e4c466fb0ec"`
Jul 12 11:50:26.059 INFO kablam!    Compiling core_collections v0.3.20170409
Jul 12 11:50:28.393 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Jul 12 11:50:28.393 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-c04ea555bf04e3ad/build-script-build` (exit code: 101)
Jul 12 11:50:28.393 INFO kablam! --- stderr
Jul 12 11:50:28.393 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:960:5
Jul 12 11:50:28.393 INFO kablam! stack backtrace:
Jul 12 11:50:28.393 INFO kablam!    0:     0x555d4901a2ae - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h384ae355f7caea4e
Jul 12 11:50:28.393 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Jul 12 11:50:28.393 INFO kablam!    1:     0x555d49024e46 - std::sys_common::backtrace::print::h4bb52e1bee024bba
Jul 12 11:50:28.393 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Jul 12 11:50:28.393 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Jul 12 11:50:28.393 INFO kablam!    2:     0x555d4901e58d - std::panicking::default_hook::{{closure}}::hb7ba413df06fc0fe
Jul 12 11:50:28.393 INFO kablam!                                at libstd/panicking.rs:211
Jul 12 11:50:28.393 INFO kablam!    3:     0x555d4901e300 - std::panicking::default_hook::h0d2752b2f723ae1b
Jul 12 11:50:28.393 INFO kablam!                                at libstd/panicking.rs:227
Jul 12 11:50:28.393 INFO kablam!    4:     0x555d4901eb4c - std::panicking::rust_panic_with_hook::h5ab246e6d52e753b
Jul 12 11:50:28.393 INFO kablam!                                at libstd/panicking.rs:475
Jul 12 11:50:28.393 INFO kablam!    5:     0x555d4901e749 - std::panicking::continue_panic_fmt::hbc5be41dc11c760a
Jul 12 11:50:28.393 INFO kablam!                                at libstd/panicking.rs:390
Jul 12 11:50:28.393 INFO kablam!    6:     0x555d4901e645 - rust_begin_unwind
Jul 12 11:50:28.393 INFO kablam!                                at libstd/panicking.rs:325
Jul 12 11:50:28.394 INFO kablam!    7:     0x555d4905f61b - core::panicking::panic_fmt::h79b37a38dbace2c3
Jul 12 11:50:28.394 INFO kablam!                                at libcore/panicking.rs:77
Jul 12 11:50:28.394 INFO kablam!    8:     0x555d4905f691 - core::option::expect_failed::h5c25e7e1dbcb8e60
Jul 12 11:50:28.394 INFO kablam!                                at libcore/option.rs:960
Jul 12 11:50:28.394 INFO kablam!    9:     0x555d48feed88 - <core::option::Option<T>>::expect::h9e39184bcea98d16
Jul 12 11:50:28.394 INFO kablam!                                at /checkout/src/libcore/option.rs:312
Jul 12 11:50:28.394 INFO kablam!   10:     0x555d48fec725 - build_script_build::main::h670bb34698e50c4a
Jul 12 11:50:28.394 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Jul 12 11:50:28.394 INFO kablam!   11:     0x555d48fee30f - std::rt::lang_start::{{closure}}::h048bc3c87766191e
Jul 12 11:50:28.394 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Jul 12 11:50:28.394 INFO kablam!   12:     0x555d4901e632 - std::panicking::try::do_call::he078c96f91c45734
Jul 12 11:50:28.394 INFO kablam!                                at libstd/rt.rs:59
Jul 12 11:50:28.394 INFO kablam!                                at libstd/panicking.rs:310
Jul 12 11:50:28.394 INFO kablam!   13:     0x555d490301f9 - __rust_maybe_catch_panic
Jul 12 11:50:28.394 INFO kablam!                                at libpanic_unwind/lib.rs:105
Jul 12 11:50:28.394 INFO kablam!   14:     0x555d490151c5 - std::rt::lang_start_internal::he059594c0b5de843
Jul 12 11:50:28.394 INFO kablam!                                at libstd/panicking.rs:289
Jul 12 11:50:28.394 INFO kablam!                                at libstd/panic.rs:392
Jul 12 11:50:28.394 INFO kablam!                                at libstd/rt.rs:58
Jul 12 11:50:28.394 INFO kablam!   15:     0x555d48fee2e7 - std::rt::lang_start::h54beb6938654050f
Jul 12 11:50:28.394 INFO kablam!                                at /checkout/src/libstd/rt.rs:74
Jul 12 11:50:28.394 INFO kablam!   16:     0x555d48fecf19 - main
Jul 12 11:50:28.394 INFO kablam!   17:     0x7feefb86782f - __libc_start_main
Jul 12 11:50:28.394 INFO kablam!   18:     0x555d48fe6438 - _start
Jul 12 11:50:28.394 INFO kablam!   19:                0x0 - <unknown>
Jul 12 11:50:28.394 INFO kablam! 
Jul 12 11:50:28.398 INFO kablam! su: No module specific data is present
Jul 12 11:50:29.049 INFO running `"docker" "rm" "-f" "363f58f78c49a223c8bc21825abee3fa4fa9d1ebe64b514297d08e4c466fb0ec"`
Jul 12 11:50:29.213 INFO blam! 363f58f78c49a223c8bc21825abee3fa4fa9d1ebe64b514297d08e4c466fb0ec