[INFO] crate core_collections 0.3.20170409 is already in cache
[INFO] checking core_collections-0.3.20170409 against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] extracting crate core_collections 0.3.20170409 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate core_collections 0.3.20170409 on toolchain 5e633973aa9255a88b65a39484627bb54e6044b3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate core_collections 0.3.20170409
[INFO] finished tweaking crates.io crate core_collections 0.3.20170409
[INFO] tweaked toml for crates.io crate core_collections 0.3.20170409 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 281e4d2275a8dbbf9cea71183d80a7072cde1644aa3999dc4face9ed7a9a47af
[INFO] running `"docker" "start" "-a" "281e4d2275a8dbbf9cea71183d80a7072cde1644aa3999dc4face9ed7a9a47af"`
[INFO] [stderr]    Compiling core_collections v0.3.20170409 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `core_collections v0.3.20170409 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/core_collections-9eaf8737e279831b/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', src/libcore/option.rs:1185:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5614d74502f4 - backtrace::backtrace::libunwind::trace::h10670797ed121b68
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x5614d74502f4 - backtrace::backtrace::trace_unsynchronized::hf5a38e033ae2a818
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5614d74502f4 - std::sys_common::backtrace::_print_fmt::h0b0e2af5a9deb4cb
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x5614d74502f4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h09f90ebbbcc94e48
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:61
[INFO] [stderr]    4:     0x5614d746d93c - core::fmt::write::h9adf6958464578db
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1028
[INFO] [stderr]    5:     0x5614d744db87 - std::io::Write::write_fmt::h9297c47d062dfa6b
[INFO] [stderr]                                at src/libstd/io/mod.rs:1412
[INFO] [stderr]    6:     0x5614d74526be - std::sys_common::backtrace::_print::h128f57eaf6d3b811
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:65
[INFO] [stderr]    7:     0x5614d74526be - std::sys_common::backtrace::print::h84624ec5a0a67ad0
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:50
[INFO] [stderr]    8:     0x5614d74526be - std::panicking::default_hook::{{closure}}::h0a87be176a63bd0d
[INFO] [stderr]                                at src/libstd/panicking.rs:188
[INFO] [stderr]    9:     0x5614d74523b1 - std::panicking::default_hook::h18557876266abded
[INFO] [stderr]                                at src/libstd/panicking.rs:205
[INFO] [stderr]   10:     0x5614d7452d0b - std::panicking::rust_panic_with_hook::h86f942b22e4cd4d1
[INFO] [stderr]                                at src/libstd/panicking.rs:464
[INFO] [stderr]   11:     0x5614d74528ae - std::panicking::continue_panic_fmt::h413d84a12c70f380
[INFO] [stderr]                                at src/libstd/panicking.rs:373
[INFO] [stderr]   12:     0x5614d7452796 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:302
[INFO] [stderr]   13:     0x5614d746b12e - core::panicking::panic_fmt::h6bd70f2c54874310
[INFO] [stderr]                                at src/libcore/panicking.rs:139
[INFO] [stderr]   14:     0x5614d746b197 - core::option::expect_failed::hfcb28e5e8799b5e0
[INFO] [stderr]                                at src/libcore/option.rs:1185
[INFO] [stderr]   15:     0x5614d7425aaa - core::option::Option<T>::expect::h4d3471a810655059
[INFO] [stderr]                                at /rustc/5e633973aa9255a88b65a39484627bb54e6044b3/src/libcore/option.rs:345
[INFO] [stderr]   16:     0x5614d742372d - build_script_build::main::h89aadc5e2a1edf79
[INFO] [stderr]                                at /opt/rustwide/workdir/build.rs:48
[INFO] [stderr]   17:     0x5614d74251b0 - std::rt::lang_start::{{closure}}::h8b8648f51a68a39b
[INFO] [stderr]                                at /rustc/5e633973aa9255a88b65a39484627bb54e6044b3/src/libstd/rt.rs:61
[INFO] [stderr]   18:     0x5614d7452783 - std::rt::lang_start_internal::{{closure}}::hf008733c03a14083
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   19:     0x5614d7452783 - std::panicking::try::do_call::hb7fbde37ae97e7fe
[INFO] [stderr]                                at src/libstd/panicking.rs:287
[INFO] [stderr]   20:     0x5614d7458a1a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:83
[INFO] [stderr]   21:     0x5614d74531ed - std::panicking::try::h79a79d869e06ace7
[INFO] [stderr]                                at src/libstd/panicking.rs:265
[INFO] [stderr]   22:     0x5614d74531ed - std::panic::catch_unwind::h428abb27e7ddef2d
[INFO] [stderr]                                at src/libstd/panic.rs:396
[INFO] [stderr]   23:     0x5614d74531ed - std::rt::lang_start_internal::hb860b89a1e78b084
[INFO] [stderr]                                at src/libstd/rt.rs:47
[INFO] [stderr]   24:     0x5614d7425189 - std::rt::lang_start::h8387c2efb492958a
[INFO] [stderr]                                at /rustc/5e633973aa9255a88b65a39484627bb54e6044b3/src/libstd/rt.rs:61
[INFO] [stderr]   25:     0x5614d7423f2a - main
[INFO] [stderr]   26:     0x7f35660afb97 - __libc_start_main
[INFO] [stderr]   27:     0x5614d741d55a - _start
[INFO] [stderr]   28:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "281e4d2275a8dbbf9cea71183d80a7072cde1644aa3999dc4face9ed7a9a47af"`
[INFO] running `"docker" "rm" "-f" "281e4d2275a8dbbf9cea71183d80a7072cde1644aa3999dc4face9ed7a9a47af"`
[INFO] [stdout] 281e4d2275a8dbbf9cea71183d80a7072cde1644aa3999dc4face9ed7a9a47af