[INFO] cloning repository https://github.com/vegapit/tchtut
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vegapit/tchtut" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvegapit%2Ftchtut", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvegapit%2Ftchtut'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0d6e880f1729a2d4a5a8bb80005d007dbf27982
[INFO] documenting vegapit/tchtut against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvegapit%2Ftchtut" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vegapit/tchtut on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vegapit/tchtut
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/vegapit/tchtut
[INFO] tweaked toml for git repo https://github.com/vegapit/tchtut written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/LaurentMazare/tch-rs`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e1b92b8550213fbf96527c188376e1bcff44a60cd836aba4140b02081640e5b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2e1b92b8550213fbf96527c188376e1bcff44a60cd836aba4140b02081640e5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e1b92b8550213fbf96527c188376e1bcff44a60cd836aba4140b02081640e5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e1b92b8550213fbf96527c188376e1bcff44a60cd836aba4140b02081640e5b", kill_on_drop: false }`
[INFO] [stdout] 2e1b92b8550213fbf96527c188376e1bcff44a60cd836aba4140b02081640e5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2686dd11feb61dc878348689e930d34bf4ef2e6a5f74aa7581862e5974b398d7
[INFO] running `Command { std: "docker" "start" "-a" "2686dd11feb61dc878348689e930d34bf4ef2e6a5f74aa7581862e5974b398d7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling curl v0.4.33
[INFO] [stderr]    Compiling podio v0.1.7
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.36+curl-7.71.1
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking num-complex v0.2.4
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking num-rational v0.3.0
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking ndarray v0.13.1
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling zip v0.5.6
[INFO] [stderr]     Checking image v0.23.9
[INFO] [stderr]     Checking font-kit v0.7.1
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]    Compiling torch-sys v0.2.0 (https://github.com/LaurentMazare/tch-rs#8e6d15ae)
[INFO] [stderr] error: failed to run custom build command for `torch-sys v0.2.0 (https://github.com/LaurentMazare/tch-rs#8e6d15ae)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/torch-sys-50bd7b549d86bf97/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-env-changed=TORCH_CUDA_VERSION
[INFO] [stderr]   cargo:rerun-if-env-changed=LIBTORCH
[INFO] [stderr] 
[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]      0: failure::backtrace::internal::InternalBacktrace::new
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.8/src/backtrace/internal.rs:46
[INFO] [stderr]      1: failure::backtrace::Backtrace::new
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.8/src/backtrace/mod.rs:121
[INFO] [stderr]      2: <failure::error::error_impl::ErrorImpl as core::convert::From<F>>::from
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.8/src/error/error_impl.rs:19
[INFO] [stderr]      3: <failure::error::Error as core::convert::From<F>>::from
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.8/src/error/mod.rs:36
[INFO] [stderr]      4: build_script_build::download
[INFO] [stderr]                at build.rs:30
[INFO] [stderr]      5: build_script_build::prepare_libtorch_dir
[INFO] [stderr]                at build.rs:130
[INFO] [stderr]      6: build_script_build::main
[INFO] [stderr]                at build.rs:202
[INFO] [stderr]      7: std::rt::lang_start::{{closure}}
[INFO] [stderr]                at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]      8: std::rt::lang_start_internal::{{closure}}
[INFO] [stderr]                at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:52
[INFO] [stderr]         std::panicking::try::do_call
[INFO] [stderr]                at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/panicking.rs:348
[INFO] [stderr]         std::panicking::try
[INFO] [stderr]                at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/panicking.rs:325
[INFO] [stderr]         std::panic::catch_unwind
[INFO] [stderr]                at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/panic.rs:394
[INFO] [stderr]         std::rt::lang_start_internal
[INFO] [stderr]                at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:51
[INFO] [stderr]      9: std::rt::lang_start
[INFO] [stderr]                at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     10: main
[INFO] [stderr]     11: __libc_start_main
[INFO] [stderr]     12: _start
[INFO] [stderr]   ', /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/8e6d15a/torch-sys/build.rs:130:48
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55aa90e370a5 - backtrace::backtrace::libunwind::trace::h14d338b30b3ea0a7
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]      1:     0x55aa90e370a5 - backtrace::backtrace::trace_unsynchronized::h73ea91d74a3fd67f
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x55aa90e370a5 - std::sys_common::backtrace::_print_fmt::hd42948c952866e12
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]      3:     0x55aa90e370a5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha8f928866ff7571e
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]      4:     0x55aa90e5df2c - core::fmt::write::he0c1e5f7426d2718
[INFO] [stderr]                                  at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]      5:     0x55aa90e32cb2 - std::io::Write::write_fmt::hf3afc6cfd57d0033
[INFO] [stderr]                                  at src/libstd/io/mod.rs:1537
[INFO] [stderr]      6:     0x55aa90e39dc0 - std::sys_common::backtrace::_print::hfc0110703f3696fd
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]      7:     0x55aa90e39dc0 - std::sys_common::backtrace::print::h3f77c6990ddfaa22
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]      8:     0x55aa90e39dc0 - std::panicking::default_hook::{{closure}}::heae49580a8d62d75
[INFO] [stderr]                                  at src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x55aa90e39b0c - std::panicking::default_hook::hecc34e3f729e213c
[INFO] [stderr]                                  at src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x55aa90e3a403 - std::panicking::rust_panic_with_hook::he82f5d0644692441
[INFO] [stderr]                                  at src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x55aa90e39ffb - rust_begin_unwind
[INFO] [stderr]                                  at src/libstd/panicking.rs:437
[INFO] [stderr]     12:     0x55aa90e5d331 - core::panicking::panic_fmt::h09c929f06bb87c98
[INFO] [stderr]                                  at src/libcore/panicking.rs:85
[INFO] [stderr]     13:     0x55aa90e5d153 - core::option::expect_none_failed::h188f17af6c9f404b
[INFO] [stderr]                                  at src/libcore/option.rs:1269
[INFO] [stderr]     14:     0x55aa90c4f183 - core::result::Result<T,E>::unwrap::hc71052e48e3d2385
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libcore/result.rs:1005
[INFO] [stderr]     15:     0x55aa90c37c4a - build_script_build::prepare_libtorch_dir::heaec0d7541cba5ed
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/8e6d15a/torch-sys/build.rs:130
[INFO] [stderr]     16:     0x55aa90c38ee4 - build_script_build::main::h630e999348f684f6
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/8e6d15a/torch-sys/build.rs:202
[INFO] [stderr]     17:     0x55aa90c4076b - std::rt::lang_start::{{closure}}::hd14c540895a46143
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     18:     0x55aa90e3a8a3 - std::rt::lang_start_internal::{{closure}}::h5d3ea623498f5f43
[INFO] [stderr]                                  at src/libstd/rt.rs:52
[INFO] [stderr]     19:     0x55aa90e3a8a3 - std::panicking::try::do_call::hac65e71be769a440
[INFO] [stderr]                                  at src/libstd/panicking.rs:348
[INFO] [stderr]     20:     0x55aa90e3a8a3 - std::panicking::try::hd4706e264bcf6712
[INFO] [stderr]                                  at src/libstd/panicking.rs:325
[INFO] [stderr]     21:     0x55aa90e3a8a3 - std::panic::catch_unwind::h948a0fb4a8b3ee82
[INFO] [stderr]                                  at src/libstd/panic.rs:394
[INFO] [stderr]     22:     0x55aa90e3a8a3 - std::rt::lang_start_internal::h72cc068ed2d0ac53
[INFO] [stderr]                                  at src/libstd/rt.rs:51
[INFO] [stderr]     23:     0x55aa90c40747 - std::rt::lang_start::h659e36eca0ed78dc
[INFO] [stderr]                                  at /rustc/04488afe34512aa4c33566eb16d8c912a3ae04f9/src/libstd/rt.rs:67
[INFO] [stderr]     24:     0x55aa90c396fa - main
[INFO] [stderr]     25:     0x7f9af24070b3 - __libc_start_main
[INFO] [stderr]     26:     0x55aa90c3516e - _start
[INFO] [stderr]     27:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "2686dd11feb61dc878348689e930d34bf4ef2e6a5f74aa7581862e5974b398d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2686dd11feb61dc878348689e930d34bf4ef2e6a5f74aa7581862e5974b398d7", kill_on_drop: false }`
[INFO] [stdout] 2686dd11feb61dc878348689e930d34bf4ef2e6a5f74aa7581862e5974b398d7