[INFO] fetching crate tch 0.1.0...
[INFO] extracting crate tch 0.1.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/tch/0.1.0
[INFO] extracting crate tch 0.1.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/tch/0.1.0
[INFO] validating manifest of tch-0.1.0 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tch-0.1.0 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tch-0.1.0
[INFO] removed 1 missing examples
[INFO] finished frobbing tch-0.1.0
[INFO] frobbed toml for tch-0.1.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/tch/0.1.0/Cargo.toml
[INFO] started frobbing tch-0.1.0
[INFO] removed 1 missing examples
[INFO] finished frobbing tch-0.1.0
[INFO] frobbed toml for tch-0.1.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/tch/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded torch-sys v0.1.0
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tch-0.1.0 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/tch/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7165f36a840cf19ac311acd5885f1f9114200f446e41041379a25d163ce6a6f5
[INFO] running `"docker" "start" "-a" "7165f36a840cf19ac311acd5885f1f9114200f446e41041379a25d163ce6a6f5"`
[INFO] [stderr]    Compiling zip v0.5.2
[INFO] [stderr]    Compiling torch-sys v0.1.0
[INFO] [stderr] error: failed to run custom build command for `torch-sys v0.1.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/torch-sys-2c53e7d3b8d2e20c/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { description: "Couldn\'t resolve host name", code: 6, extra: None }
[INFO] [stderr] 
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0: failure::backtrace::internal::InternalBacktrace::new::ha9262c45a2221af9 (0x556737b8eca1)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/backtrace/internal.rs:44
[INFO] [stderr]    1: failure::backtrace::Backtrace::new::h4970c7ba4fbf3553 (0x556737b8ea4e)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/backtrace/mod.rs:111
[INFO] [stderr]    2: <failure::error::error_impl::ErrorImpl as core::convert::From<F>>::from::hee243ec4aa33b227 (0x556737a2e5ec)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/error/error_impl.rs:19
[INFO] [stderr]    3: <failure::error::Error as core::convert::From<F>>::from::h50cfac323cf35a3e (0x556737a21f58)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/error/mod.rs:36
[INFO] [stderr]    4: build_script_build::download::h41d0ae6dce45bbe0 (0x556737a2268f)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/torch-sys-0.1.0/build.rs:30
[INFO] [stderr]    5: build_script_build::prepare_libtorch_dir::hfb21204c7a781dc2 (0x556737a2492b)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/torch-sys-0.1.0/build.rs:106
[INFO] [stderr]    6: build_script_build::main::h0dffc168bd5ad6b2 (0x556737a254d1)
[INFO] [stderr]              at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/torch-sys-0.1.0/build.rs:143
[INFO] [stderr]    7: std::rt::lang_start::{{closure}}::hcd6e8f3b42952af0 (0x556737a1ecc0)
[INFO] [stderr]              at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libstd/rt.rs:64
[INFO] [stderr]    8: std::rt::lang_start_internal::{{closure}}::h8302806cea4153ed (0x556737be0b83)
[INFO] [stderr]              at src/libstd/rt.rs:49
[INFO] [stderr]       std::panicking::try::do_call::hc811096721c4b953
[INFO] [stderr]              at src/libstd/panicking.rs:296
[INFO] [stderr]    9: __rust_maybe_catch_panic (0x556737be9cea)
[INFO] [stderr]              at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   10: std::panicking::try::h132c927956f6dad4 (0x556737be174d)
[INFO] [stderr]              at src/libstd/panicking.rs:275
[INFO] [stderr]       std::panic::catch_unwind::h2f6ea137782ab73f
[INFO] [stderr]              at src/libstd/panic.rs:388
[INFO] [stderr]       std::rt::lang_start_internal::h0f27bcf63030d183
[INFO] [stderr]              at src/libstd/rt.rs:48
[INFO] [stderr]   11: std::rt::lang_start::h61e5102d87924b01 (0x556737a1ec99)
[INFO] [stderr]              at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libstd/rt.rs:64
[INFO] [stderr]   12: main (0x556737a257ea)
[INFO] [stderr]   13: __libc_start_main (0x7efe84f252e1)
[INFO] [stderr]   14: _start (0x556737a113fa)
[INFO] [stderr]   15: <unknown> (0x0)', src/libcore/result.rs:999:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x556737be0a0b - backtrace::backtrace::libunwind::trace::h3eb7dec79b0cb248
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x556737be0a0b - backtrace::backtrace::trace_unsynchronized::h828522acfd8fecfd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x556737be0a0b - std::sys_common::backtrace::_print::ha50329dede3e270e
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x556737be0a0b - std::sys_common::backtrace::print::ha6d7f96740481555
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x556737be0a0b - std::panicking::default_hook::{{closure}}::h48c4812e51e499b0
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x556737be06e7 - std::panicking::default_hook::h5d25d0fa83093442
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x556737be1180 - std::panicking::rust_panic_with_hook::h1babb2b4ac73106c
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x556737be0d02 - std::panicking::continue_panic_fmt::hb318720956a96dd4
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x556737be0be6 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x556737bfd60d - core::panicking::panic_fmt::h78250769f89ff6a0
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x556737a2f565 - core::result::unwrap_failed::h4dc6b76ff2c6ed49
[INFO] [stderr]                                at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libcore/macros.rs:18
[INFO] [stderr]   11:     0x556737a301fb - core::result::Result<T,E>::unwrap::ha6714539cb250809
[INFO] [stderr]                                at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libcore/result.rs:800
[INFO] [stderr]   12:     0x556737a24958 - build_script_build::prepare_libtorch_dir::hfb21204c7a781dc2
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/torch-sys-0.1.0/build.rs:106
[INFO] [stderr]   13:     0x556737a254d1 - build_script_build::main::h0dffc168bd5ad6b2
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/torch-sys-0.1.0/build.rs:143
[INFO] [stderr]   14:     0x556737a1ecc0 - std::rt::lang_start::{{closure}}::hcd6e8f3b42952af0
[INFO] [stderr]                                at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libstd/rt.rs:64
[INFO] [stderr]   15:     0x556737be0b83 - std::rt::lang_start_internal::{{closure}}::h8302806cea4153ed
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   16:     0x556737be0b83 - std::panicking::try::do_call::hc811096721c4b953
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   17:     0x556737be9cea - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   18:     0x556737be174d - std::panicking::try::h132c927956f6dad4
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   19:     0x556737be174d - std::panic::catch_unwind::h2f6ea137782ab73f
[INFO] [stderr]                                at src/libstd/panic.rs:388
[INFO] [stderr]   20:     0x556737be174d - std::rt::lang_start_internal::h0f27bcf63030d183
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   21:     0x556737a1ec99 - std::rt::lang_start::h61e5102d87924b01
[INFO] [stderr]                                at /rustc/848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/src/libstd/rt.rs:64
[INFO] [stderr]   22:     0x556737a257ea - main
[INFO] [stderr]   23:     0x7efe84f252e1 - __libc_start_main
[INFO] [stderr]   24:     0x556737a113fa - _start
[INFO] [stderr]   25:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "7165f36a840cf19ac311acd5885f1f9114200f446e41041379a25d163ce6a6f5"`
[INFO] running `"docker" "rm" "-f" "7165f36a840cf19ac311acd5885f1f9114200f446e41041379a25d163ce6a6f5"`
[INFO] [stdout] 7165f36a840cf19ac311acd5885f1f9114200f446e41041379a25d163ce6a6f5