Sep 20 05:04:51.616 INFO checking core_rustc-serialize-0.3.20-v0.3.19patch1 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 20 05:04:51.616 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 20 05:04:51.616 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-0/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 05:04:51.776 INFO blam! b5d6d8ba36ee946cc0a68877b2d536c249a4b44138d1fbfe18c3365eb785e7c8
Sep 20 05:04:51.778 INFO running `"docker" "start" "-a" "b5d6d8ba36ee946cc0a68877b2d536c249a4b44138d1fbfe18c3365eb785e7c8"`
Sep 20 05:04:52.738 INFO kablam! usermod: no changes
Sep 20 05:04:52.812 INFO kablam!    Compiling core_collections v0.3.20170409
Sep 20 05:04:54.173 INFO kablam! error: failed to run custom build command for `core_collections v0.3.20170409`
Sep 20 05:04:54.173 INFO kablam! process didn't exit successfully: `/target/debug/build/core_collections-b49c8d957b4b8d93/build-script-build` (exit code: 101)
Sep 20 05:04:54.173 INFO kablam! --- stderr
Sep 20 05:04:54.173 INFO kablam! thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', libcore/option.rs:1010:5
Sep 20 05:04:54.173 INFO kablam! stack backtrace:
Sep 20 05:04:54.173 INFO kablam!    0:     0x561e08b9916e - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hf109cffeb5c37bed
Sep 20 05:04:54.173 INFO kablam!                                at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
Sep 20 05:04:54.173 INFO kablam!    1:     0x561e08b8b1c6 - std::sys_common::backtrace::print::h4afa12dd16372edf
Sep 20 05:04:54.173 INFO kablam!                                at libstd/sys_common/backtrace.rs:71
Sep 20 05:04:54.173 INFO kablam!                                at libstd/sys_common/backtrace.rs:59
Sep 20 05:04:54.173 INFO kablam!    2:     0x561e08b89b6d - std::panicking::default_hook::{{closure}}::ha3565edfa2d8a8f7
Sep 20 05:04:54.173 INFO kablam!                                at libstd/panicking.rs:211
Sep 20 05:04:54.173 INFO kablam!    3:     0x561e08b898e0 - std::panicking::default_hook::h68592964d2f4a1f7
Sep 20 05:04:54.173 INFO kablam!                                at libstd/panicking.rs:227
Sep 20 05:04:54.173 INFO kablam!    4:     0x561e08b8a12c - std::panicking::rust_panic_with_hook::h33d0ce8157f9a0b5
Sep 20 05:04:54.173 INFO kablam!                                at libstd/panicking.rs:477
Sep 20 05:04:54.173 INFO kablam!    5:     0x561e08b89d29 - std::panicking::continue_panic_fmt::hbe179dc3877c8fe2
Sep 20 05:04:54.173 INFO kablam!                                at libstd/panicking.rs:391
Sep 20 05:04:54.173 INFO kablam!    6:     0x561e08b89c25 - rust_begin_unwind
Sep 20 05:04:54.173 INFO kablam!                                at libstd/panicking.rs:326
Sep 20 05:04:54.173 INFO kablam!    7:     0x561e08bd47cb - core::panicking::panic_fmt::h6956b98d176146bb
Sep 20 05:04:54.173 INFO kablam!                                at libcore/panicking.rs:77
Sep 20 05:04:54.173 INFO kablam!    8:     0x561e08bd4841 - core::option::expect_failed::h168e60d53c2e8168
Sep 20 05:04:54.173 INFO kablam!                                at libcore/option.rs:1010
Sep 20 05:04:54.173 INFO kablam!    9:     0x561e08b683b3 - <core::option::Option<T>>::expect::h09033c42d4ffac16
Sep 20 05:04:54.173 INFO kablam!                                at libcore/option.rs:322
Sep 20 05:04:54.173 INFO kablam!   10:     0x561e08b6659f - build_script_build::main::h4fe9dd3df27bf1dd
Sep 20 05:04:54.173 INFO kablam!                                at /cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
Sep 20 05:04:54.173 INFO kablam!   11:     0x561e08b67aef - std::rt::lang_start::{{closure}}::h6bea2e2017a2b0d7
Sep 20 05:04:54.173 INFO kablam!                                at libstd/rt.rs:74
Sep 20 05:04:54.173 INFO kablam!   12:     0x561e08b89c12 - std::panicking::try::do_call::h7aef401f0d6f2817
Sep 20 05:04:54.173 INFO kablam!                                at libstd/rt.rs:59
Sep 20 05:04:54.173 INFO kablam!                                at libstd/panicking.rs:310
Sep 20 05:04:54.173 INFO kablam!   13:     0x561e08ba9ca9 - __rust_maybe_catch_panic
Sep 20 05:04:54.173 INFO kablam!                                at libpanic_unwind/lib.rs:102
Sep 20 05:04:54.173 INFO kablam!   14:     0x561e08b94e05 - std::rt::lang_start_internal::hd57f65710f093de9
Sep 20 05:04:54.174 INFO kablam!                                at libstd/panicking.rs:289
Sep 20 05:04:54.174 INFO kablam!                                at libstd/panic.rs:392
Sep 20 05:04:54.174 INFO kablam!                                at libstd/rt.rs:58
Sep 20 05:04:54.174 INFO kablam!   15:     0x561e08b67ac7 - std::rt::lang_start::hde5a919b1327129a
Sep 20 05:04:54.174 INFO kablam!                                at libstd/rt.rs:74
Sep 20 05:04:54.174 INFO kablam!   16:     0x561e08b66d89 - main
Sep 20 05:04:54.174 INFO kablam!   17:     0x7f59bbe7d82f - __libc_start_main
Sep 20 05:04:54.174 INFO kablam!   18:     0x561e08b60368 - _start
Sep 20 05:04:54.174 INFO kablam!   19:                0x0 - <unknown>
Sep 20 05:04:54.174 INFO kablam! 
Sep 20 05:04:54.174 INFO kablam! su: No module specific data is present
Sep 20 05:04:54.990 INFO running `"docker" "rm" "-f" "b5d6d8ba36ee946cc0a68877b2d536c249a4b44138d1fbfe18c3365eb785e7c8"`
Sep 20 05:04:55.122 INFO blam! b5d6d8ba36ee946cc0a68877b2d536c249a4b44138d1fbfe18c3365eb785e7c8