[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] cbf2f8b71b159df57327841566f5be14bb171137
[INFO] checking vegapit/tchtut against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[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 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] edb0e9af8a46fd969526974f6ec0e2a2d7def6f3de9eafc651c527253a73de42
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "edb0e9af8a46fd969526974f6ec0e2a2d7def6f3de9eafc651c527253a73de42"`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling curl v0.4.22
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.15
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling openssl-sys v0.9.47
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.20
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking clicolors-control v1.0.0
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]    Compiling socket2 v0.3.9
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]     Checking libflate v0.1.25
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling backtrace v0.3.32
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling zip v0.5.2
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking font-loader v0.8.0
[INFO] [stderr]     Checking console v0.7.7
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling torch-sys v0.1.1 (https://github.com/LaurentMazare/tch-rs#2fe00ace)
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.2
[INFO] [stderr] error: failed to run custom build command for `torch-sys v0.1.1 (https://github.com/LaurentMazare/tch-rs#2fe00ace)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/torch-sys-02157cd9a7c59d8a/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::h364125df65e3303b (0x55c7c50b158f)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/backtrace/internal.rs:44
[INFO] [stderr]    1: failure::backtrace::Backtrace::new::h0b8ed48df5100c28 (0x55c7c50b100e)
[INFO] [stderr]              at /opt/rustwide/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::h2c5560472819d2f0 (0x55c7c4f53e2c)
[INFO] [stderr]              at /opt/rustwide/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::hcf2547192abc5aff (0x55c7c4f51338)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/error/mod.rs:36
[INFO] [stderr]    4: build_script_build::download::hd3d2a6a81364dd88 (0x55c7c4f46dcd)
[INFO] [stderr]              at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/2fe00ac/torch-sys/build.rs:30
[INFO] [stderr]    5: build_script_build::prepare_libtorch_dir::hffcf71502ca517c5 (0x55c7c4f490f0)
[INFO] [stderr]              at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/2fe00ac/torch-sys/build.rs:106
[INFO] [stderr]    6: build_script_build::main::ha52fc483a14f5f17 (0x55c7c4f49cc1)
[INFO] [stderr]              at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/2fe00ac/torch-sys/build.rs:143
[INFO] [stderr]    7: std::rt::lang_start::{{closure}}::h1422fb0330aaf387 (0x55c7c4f504d0)
[INFO] [stderr]              at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/rt.rs:61
[INFO] [stderr]    8: std::rt::lang_start_internal::{{closure}}::h87ac7726b4ada2a9 (0x55c7c5100063)
[INFO] [stderr]              at src/libstd/rt.rs:48
[INFO] [stderr]       std::panicking::try::do_call::he4d58a26927f0537
[INFO] [stderr]              at src/libstd/panicking.rs:288
[INFO] [stderr]    9: __rust_maybe_catch_panic (0x55c7c5108ffa)
[INFO] [stderr]              at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   10: std::panicking::try::hc8ad7011d3baf74d (0x55c7c5100bed)
[INFO] [stderr]              at src/libstd/panicking.rs:267
[INFO] [stderr]       std::panic::catch_unwind::haaf07c0b1c45cbc8
[INFO] [stderr]              at src/libstd/panic.rs:394
[INFO] [stderr]       std::rt::lang_start_internal::h53afdaeda14f9890
[INFO] [stderr]              at src/libstd/rt.rs:47
[INFO] [stderr]   11: std::rt::lang_start::h0c4af983e826498e (0x55c7c4f504a9)
[INFO] [stderr]              at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/rt.rs:61
[INFO] [stderr]   12: main (0x55c7c4f49fca)
[INFO] [stderr]   13: __libc_start_main (0x7f76afcceb97)
[INFO] [stderr]   14: _start (0x55c7c4f3570a)
[INFO] [stderr]   15: <unknown> (0x0)', src/libcore/result.rs:1165:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55c7c50fd25a - backtrace::backtrace::libunwind::trace::hef9286fd8c27fd45
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55c7c50fd25a - backtrace::backtrace::trace_unsynchronized::h92082381ae588065
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55c7c50fd25a - std::sys_common::backtrace::_print_fmt::h00c64aa4e7e3372c
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x55c7c50fd25a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc568c1817d410574
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:61
[INFO] [stderr]    4:     0x55c7c511f17c - core::fmt::write::he445cb7086c25009
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1028
[INFO] [stderr]    5:     0x55c7c50f9077 - std::io::Write::write_fmt::he0bcb31f8a60d79b
[INFO] [stderr]                                at src/libstd/io/mod.rs:1412
[INFO] [stderr]    6:     0x55c7c50fff3e - std::sys_common::backtrace::_print::h45adb36ea9b21f61
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:65
[INFO] [stderr]    7:     0x55c7c50fff3e - std::sys_common::backtrace::print::h223c050f40432de9
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:50
[INFO] [stderr]    8:     0x55c7c50fff3e - std::panicking::default_hook::{{closure}}::hf3487b4e375d5982
[INFO] [stderr]                                at src/libstd/panicking.rs:189
[INFO] [stderr]    9:     0x55c7c50ffc41 - std::panicking::default_hook::h9d095a3a991b35b0
[INFO] [stderr]                                at src/libstd/panicking.rs:206
[INFO] [stderr]   10:     0x55c7c5100635 - std::panicking::rust_panic_with_hook::h907bb8227c8498d1
[INFO] [stderr]                                at src/libstd/panicking.rs:469
[INFO] [stderr]   11:     0x55c7c51001d2 - std::panicking::continue_panic_fmt::h6c8f32a89e529f80
[INFO] [stderr]                                at src/libstd/panicking.rs:376
[INFO] [stderr]   12:     0x55c7c51000c6 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:303
[INFO] [stderr]   13:     0x55c7c511c6ba - core::panicking::panic_fmt::h01498e2390db31e9
[INFO] [stderr]                                at src/libcore/panicking.rs:84
[INFO] [stderr]   14:     0x55c7c511c7b7 - core::result::unwrap_failed::h99c2a0b406513fec
[INFO] [stderr]                                at src/libcore/result.rs:1165
[INFO] [stderr]   15:     0x55c7c4f40830 - core::result::Result<T,E>::unwrap::h342555fe261cfb91
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libcore/result.rs:933
[INFO] [stderr]   16:     0x55c7c4f4910b - build_script_build::prepare_libtorch_dir::hffcf71502ca517c5
[INFO] [stderr]                                at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/2fe00ac/torch-sys/build.rs:106
[INFO] [stderr]   17:     0x55c7c4f49cc1 - build_script_build::main::ha52fc483a14f5f17
[INFO] [stderr]                                at /opt/rustwide/cargo-home/git/checkouts/tch-rs-b9d1710db79374bb/2fe00ac/torch-sys/build.rs:143
[INFO] [stderr]   18:     0x55c7c4f504d0 - std::rt::lang_start::{{closure}}::h1422fb0330aaf387
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/rt.rs:61
[INFO] [stderr]   19:     0x55c7c5100063 - std::rt::lang_start_internal::{{closure}}::h87ac7726b4ada2a9
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x55c7c5100063 - std::panicking::try::do_call::he4d58a26927f0537
[INFO] [stderr]                                at src/libstd/panicking.rs:288
[INFO] [stderr]   21:     0x55c7c5108ffa - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   22:     0x55c7c5100bed - std::panicking::try::hc8ad7011d3baf74d
[INFO] [stderr]                                at src/libstd/panicking.rs:267
[INFO] [stderr]   23:     0x55c7c5100bed - std::panic::catch_unwind::haaf07c0b1c45cbc8
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   24:     0x55c7c5100bed - std::rt::lang_start_internal::h53afdaeda14f9890
[INFO] [stderr]                                at src/libstd/rt.rs:47
[INFO] [stderr]   25:     0x55c7c4f504a9 - std::rt::lang_start::h0c4af983e826498e
[INFO] [stderr]                                at /rustc/2748a9fd93dd1a00a4521f4f16de5befbf77f6cd/src/libstd/rt.rs:61
[INFO] [stderr]   26:     0x55c7c4f49fca - main
[INFO] [stderr]   27:     0x7f76afcceb97 - __libc_start_main
[INFO] [stderr]   28:     0x55c7c4f3570a - _start
[INFO] [stderr]   29:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "edb0e9af8a46fd969526974f6ec0e2a2d7def6f3de9eafc651c527253a73de42"`
[INFO] running `"docker" "rm" "-f" "edb0e9af8a46fd969526974f6ec0e2a2d7def6f3de9eafc651c527253a73de42"`
[INFO] [stdout] edb0e9af8a46fd969526974f6ec0e2a2d7def6f3de9eafc651c527253a73de42