[INFO] updating cached repository https://github.com/vegapit/tchtut
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0175cac21542c02de013cac90b4d1a7b7e027321
[INFO] checking vegapit/tchtut against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvegapit%2Ftchtut" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vegapit/tchtut on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-6/source/Cargo.toml
[INFO] crate git repo https://github.com/vegapit/tchtut already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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] 1dc616d30884538c357e6683ce2b585544e871354a825f1c5620002d6d6d2c0f
[INFO] running `"docker" "start" "-a" "1dc616d30884538c357e6683ce2b585544e871354a825f1c5620002d6d6d2c0f"`
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling podio v0.1.6
[INFO] [stderr]    Compiling palette v0.4.1
[INFO] [stderr]     Checking svg v0.6.0
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.23
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]    Compiling socket2 v0.3.11
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking stb_truetype v0.3.0
[INFO] [stderr]     Checking flate2 v1.0.12
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking euclid v0.20.3
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]    Compiling miniz_oxide v0.3.5
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling palette_derive v0.4.1
[INFO] [stderr]     Checking console v0.9.1
[INFO] [stderr]     Checking rusttype v0.8.1
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]     Checking lyon_geom v0.14.1
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking zip v0.5.3
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking lyon_path v0.14.0
[INFO] [stderr]     Checking font-kit v0.4.0
[INFO] [stderr]     Checking plotters v0.2.11
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling torch-sys v0.1.3 (https://github.com/LaurentMazare/tch-rs#81f6215c)
[INFO] [stderr] error: failed to run custom build command for `torch-sys v0.1.3 (https://github.com/LaurentMazare/tch-rs#81f6215c)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/torch-sys-9943c615c98661cc/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
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.6/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-0.1.6/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-0.1.6/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-0.1.6/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:116
[INFO] [stderr]    6: build_script_build::main
[INFO] [stderr]              at build.rs:173
[INFO] [stderr]    7: std::rt::lang_start::{{closure}}
[INFO] [stderr]              at /rustc/d27c6c6a469a28343396a8f3ac1c9d403aabda69/src/libstd/rt.rs:67
[INFO] [stderr]    8: std::rt::lang_start_internal::{{closure}}
[INFO] [stderr]              at src/libstd/rt.rs:52
[INFO] [stderr]       std::panicking::try::do_call
[INFO] [stderr]              at src/libstd/panicking.rs:296
[INFO] [stderr]    9: __rust_maybe_catch_panic
[INFO] [stderr]              at src/libpanic_unwind/lib.rs:79
[INFO] [stderr]   10: std::panicking::try
[INFO] [stderr]              at src/libstd/panicking.rs:272
[INFO] [stderr]       std::panic::catch_unwind
[INFO] [stderr]              at src/libstd/panic.rs:394
[INFO] [stderr]       std::rt::lang_start_internal
[INFO] [stderr]              at src/libstd/rt.rs:51
[INFO] [stderr]   11: std::rt::lang_start
[INFO] [stderr]              at /rustc/d27c6c6a469a28343396a8f3ac1c9d403aabda69/src/libstd/rt.rs:67
[INFO] [stderr]   12: main
[INFO] [stderr]   13: __libc_start_main
[INFO] [stderr]   14: _start
[INFO] [stderr] ', /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/81f6215/torch-sys/build.rs:116:13
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5564ad114944 - backtrace::backtrace::libunwind::trace::h7f6a16d12232c961
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x5564ad114944 - backtrace::backtrace::trace_unsynchronized::h80308da2c2f00997
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5564ad114944 - std::sys_common::backtrace::_print_fmt::he1209b8ba63c9fd2
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x5564ad114944 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8daf2ba8ed48f971
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x5564ad134c1c - core::fmt::write::hd6c5c9ab01551e29
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1057
[INFO] [stderr]    5:     0x5564ad110837 - std::io::Write::write_fmt::h92dca42149c54903
[INFO] [stderr]                                at src/libstd/io/mod.rs:1426
[INFO] [stderr]    6:     0x5564ad117255 - std::sys_common::backtrace::_print::hfc0ffaecef6820ce
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x5564ad117255 - std::sys_common::backtrace::print::hb2f3121d5ded79bb
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x5564ad117255 - std::panicking::default_hook::{{closure}}::h48ee859394646c26
[INFO] [stderr]                                at src/libstd/panicking.rs:195
[INFO] [stderr]    9:     0x5564ad116f41 - std::panicking::default_hook::he04601656067c23b
[INFO] [stderr]                                at src/libstd/panicking.rs:215
[INFO] [stderr]   10:     0x5564ad1178ba - std::panicking::rust_panic_with_hook::h1a13a61ec549b61a
[INFO] [stderr]                                at src/libstd/panicking.rs:463
[INFO] [stderr]   11:     0x5564ad1174a0 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:371
[INFO] [stderr]   12:     0x5564ad133f61 - core::panicking::panic_fmt::hf9765164329c732e
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   13:     0x5564ad133d83 - core::option::expect_none_failed::h673062ee969d5ec3
[INFO] [stderr]                                at src/libcore/option.rs:1198
[INFO] [stderr]   14:     0x5564acf84149 - core::result::Result<T,E>::unwrap::h1840d98723bf7195
[INFO] [stderr]                                at /rustc/d27c6c6a469a28343396a8f3ac1c9d403aabda69/src/libcore/result.rs:962
[INFO] [stderr]   15:     0x5564acf8a7fd - build_script_build::prepare_libtorch_dir::hf71f8ba1e021e9e3
[INFO] [stderr]                                at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/81f6215/torch-sys/build.rs:116
[INFO] [stderr]   16:     0x5564acf8b894 - build_script_build::main::h923e41e1c785ca39
[INFO] [stderr]                                at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/81f6215/torch-sys/build.rs:173
[INFO] [stderr]   17:     0x5564acf91390 - std::rt::lang_start::{{closure}}::h72cce13887d12e5c
[INFO] [stderr]                                at /rustc/d27c6c6a469a28343396a8f3ac1c9d403aabda69/src/libstd/rt.rs:67
[INFO] [stderr]   18:     0x5564ad117383 - std::rt::lang_start_internal::{{closure}}::h3b078c3da4627c97
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   19:     0x5564ad117383 - std::panicking::try::do_call::hf3bd84286ccd6179
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   20:     0x5564ad1204aa - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:79
[INFO] [stderr]   21:     0x5564ad117e20 - std::panicking::try::hcb0fe9f753e69b09
[INFO] [stderr]                                at src/libstd/panicking.rs:272
[INFO] [stderr]   22:     0x5564ad117e20 - std::panic::catch_unwind::h75eb9eb43d127e80
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   23:     0x5564ad117e20 - std::rt::lang_start_internal::hb7f339488e9d1f13
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   24:     0x5564acf91369 - std::rt::lang_start::hddd5a93df70498a0
[INFO] [stderr]                                at /rustc/d27c6c6a469a28343396a8f3ac1c9d403aabda69/src/libstd/rt.rs:67
[INFO] [stderr]   25:     0x5564acf8bcea - main
[INFO] [stderr]   26:     0x7f5bb1980b97 - __libc_start_main
[INFO] [stderr]   27:     0x5564acf7a1ea - _start
[INFO] [stderr]   28:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "1dc616d30884538c357e6683ce2b585544e871354a825f1c5620002d6d6d2c0f"`
[INFO] running `"docker" "rm" "-f" "1dc616d30884538c357e6683ce2b585544e871354a825f1c5620002d6d6d2c0f"`
[INFO] [stdout] 1dc616d30884538c357e6683ce2b585544e871354a825f1c5620002d6d6d2c0f