[INFO] crate core_rustc-serialize 0.3.20-v0.3.19patch1 is already in cache
[INFO] checking core_rustc-serialize-0.3.20-v0.3.19patch1 against try#b19afc12c4f781e95f168f2fdea339c972f14ae2 for pr-64327
[INFO] extracting crate core_rustc-serialize 0.3.20-v0.3.19patch1 into work/builds/worker-1/source
[INFO] validating manifest of crates.io crate core_rustc-serialize 0.3.20-v0.3.19patch1 on toolchain b19afc12c4f781e95f168f2fdea339c972f14ae2-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate core_rustc-serialize 0.3.20-v0.3.19patch1
[INFO] finished tweaking crates.io crate core_rustc-serialize 0.3.20-v0.3.19patch1
[INFO] tweaked toml for crates.io crate core_rustc-serialize 0.3.20-v0.3.19patch1 written to work/builds/worker-1/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 03a4ad949eadd72987bdb957a592154839805fa66cfe5ecf0edc8fca1ec6c309
[INFO] running `"docker" "start" "-a" "03a4ad949eadd72987bdb957a592154839805fa66cfe5ecf0edc8fca1ec6c309"`
[INFO] [stderr]    Compiling core_collections v0.3.20170409
[INFO] [stderr] error: failed to run custom build command for `core_collections v0.3.20170409`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/core_collections-2bf80fb4f659513f/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:1190:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x557254e73554 - backtrace::backtrace::libunwind::trace::he281d1430a66d201
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x557254e73554 - backtrace::backtrace::trace_unsynchronized::h102bb4b69987d605
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x557254e73554 - std::sys_common::backtrace::_print_fmt::h7c2f159f268a4f8c
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x557254e73554 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h54378f2ca7d450f4
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:61
[INFO] [stderr]    4:     0x557254e90e3c - core::fmt::write::ha0a3ecae75b0dbc8
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1030
[INFO] [stderr]    5:     0x557254e70d77 - std::io::Write::write_fmt::ha1cf046f2b915c3e
[INFO] [stderr]                                at src/libstd/io/mod.rs:1412
[INFO] [stderr]    6:     0x557254e758f5 - std::sys_common::backtrace::_print::ha9aa7e33ae167e9f
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:65
[INFO] [stderr]    7:     0x557254e758f5 - std::sys_common::backtrace::print::h0f26745f782cf831
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:50
[INFO] [stderr]    8:     0x557254e758f5 - std::panicking::default_hook::{{closure}}::h9ac03e59053b82f0
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    9:     0x557254e755e6 - std::panicking::default_hook::h2bc2c167050e786d
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]   10:     0x557254e75f45 - std::panicking::rust_panic_with_hook::h8403eca5575e8757
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]   11:     0x557254e75ae2 - std::panicking::continue_panic_fmt::h59d06952784da242
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]   12:     0x557254e759d6 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]   13:     0x557254e8e54a - core::panicking::panic_fmt::ha0012b4b46a86c25
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   14:     0x557254e8e5b7 - core::option::expect_failed::h1312b35c55770d40
[INFO] [stderr]                                at src/libcore/option.rs:1190
[INFO] [stderr]   15:     0x557254e46c3a - core::option::Option<T>::expect::h70a3dd29c39b9aaa
[INFO] [stderr]                                at /rustc/b19afc12c4f781e95f168f2fdea339c972f14ae2/src/libcore/option.rs:345
[INFO] [stderr]   16:     0x557254e4518d - build_script_build::main::h00e98baf9401152c
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48
[INFO] [stderr]   17:     0x557254e472f0 - std::rt::lang_start::{{closure}}::he3900380deb2ac4b
[INFO] [stderr]                                at /rustc/b19afc12c4f781e95f168f2fdea339c972f14ae2/src/libstd/rt.rs:64
[INFO] [stderr]   18:     0x557254e759c3 - std::rt::lang_start_internal::{{closure}}::hb4c6339b185f201f
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   19:     0x557254e759c3 - std::panicking::try::do_call::h467065f75f458473
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   20:     0x557254e7bd7a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   21:     0x557254e7643d - std::panicking::try::h67ed39ee2076b60d
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   22:     0x557254e7643d - std::panic::catch_unwind::h1dd211c39ef1a928
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   23:     0x557254e7643d - std::rt::lang_start_internal::h66991f896511b48c
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   24:     0x557254e472c9 - std::rt::lang_start::h17f574723813b6e0
[INFO] [stderr]                                at /rustc/b19afc12c4f781e95f168f2fdea339c972f14ae2/src/libstd/rt.rs:64
[INFO] [stderr]   25:     0x557254e4598a - main
[INFO] [stderr]   26:     0x7f88dcfe6b97 - __libc_start_main
[INFO] [stderr]   27:     0x557254e3efaa - _start
[INFO] [stderr]   28:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "03a4ad949eadd72987bdb957a592154839805fa66cfe5ecf0edc8fca1ec6c309"`
[INFO] running `"docker" "rm" "-f" "03a4ad949eadd72987bdb957a592154839805fa66cfe5ecf0edc8fca1ec6c309"`
[INFO] [stdout] 03a4ad949eadd72987bdb957a592154839805fa66cfe5ecf0edc8fca1ec6c309