[INFO] updating cached repository https://github.com/williamhogman/rusty-snek
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b06b5188c9ff28fd7a05eea4c287985f5cb59c2d
[INFO] checking williamhogman/rusty-snek against master#e22b61bff0bdd08be7665607cb7be3748c8a35d2 for pr-74627
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamhogman%2Frusty-snek" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/williamhogman/rusty-snek on toolchain e22b61bff0bdd08be7665607cb7be3748c8a35d2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/williamhogman/rusty-snek
[INFO] finished tweaking git repo https://github.com/williamhogman/rusty-snek
[INFO] tweaked toml for git repo https://github.com/williamhogman/rusty-snek written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/williamhogman/rusty-snek already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other binary targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a binary target:
[INFO] [stderr] 
[INFO] [stderr] * /workspace/builds/worker-6/source/src/main.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a binary target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autobins = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "metadata" "--no-deps" "--format-version=1", 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] c82d37c10a2ade9ee965b0b7b25b2079ee2ac29f2654de26daa542dd4e1c7d0f
[INFO] running `Command { std: "docker" "start" "-a" "c82d37c10a2ade9ee965b0b7b25b2079ee2ac29f2654de26daa542dd4e1c7d0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c82d37c10a2ade9ee965b0b7b25b2079ee2ac29f2654de26daa542dd4e1c7d0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c82d37c10a2ade9ee965b0b7b25b2079ee2ac29f2654de26daa542dd4e1c7d0f", kill_on_drop: false }`
[INFO] [stdout] c82d37c10a2ade9ee965b0b7b25b2079ee2ac29f2654de26daa542dd4e1c7d0f
[INFO] running `Command { std: "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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db199709ee10b300ab6e95d632210099267788764dc3be5dd7b6b6920e1ad86e
[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" "db199709ee10b300ab6e95d632210099267788764dc3be5dd7b6b6920e1ad86e", kill_on_drop: false }`
[INFO] [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other binary targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a binary target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/src/main.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a binary target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autobins = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling protobuf v1.7.3
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling rustc-demangle v0.1.8
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking rand_core v0.2.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling protoc v1.7.3
[INFO] [stderr]     Checking rand v0.5.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling grpcio-sys v0.2.3
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling uuid v0.1.18
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling mktemp v0.3.1
[INFO] [stderr]    Compiling grpcio-compiler v0.2.0
[INFO] [stderr]    Compiling protoc-grpcio v0.1.1
[INFO] [stderr]    Compiling copperhead v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `copperhead v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/copperhead-beb1480b289169e0/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=src/protos
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Failed to compile gRPC definitions!: Os { code: 30, kind: Other, message: "Read-only file system" }
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x558d03180203 - backtrace::backtrace::libunwind::trace::h692b1f573570172c
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.8/src/backtrace/libunwind.rs:53
[INFO] [stderr]                            - backtrace::backtrace::trace::h87908d68f6d0168b
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.8/src/backtrace/mod.rs:42
[INFO] [stderr]      1:     0x558d0317c813 - backtrace::capture::Backtrace::new_unresolved::h0773ed7a46439358
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.8/src/capture.rs:88
[INFO] [stderr]      2:     0x558d0317afe5 - failure::backtrace::internal::InternalBacktrace::new::h9e6b5787db73c135
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/backtrace/internal.rs:44
[INFO] [stderr]      3:     0x558d03179b8c - failure::backtrace::Backtrace::new::h5f66a834bd23479b
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/backtrace/mod.rs:98
[INFO] [stderr]      4:     0x558d0314bd07 - <failure::error::Error as core::convert::From<F>>::from::hf65f2f42de0c27fd
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/error.rs:34
[INFO] [stderr]      5:     0x558d0314cc2e - <T as core::convert::Into<U>>::into::h01b2e4e1e9377b3d
[INFO] [stderr]                           at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/convert/mod.rs:563
[INFO] [stderr]      6:     0x558d0314366d - failure::context::Context<D>::with_err::haea8ce116520f043
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/context.rs:78
[INFO] [stderr]      7:     0x558d0314d1c5 - failure::Fail::context::h2ed4cd30cd103af9
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/lib.rs:127
[INFO] [stderr]      8:     0x558d0314d385 - <core::result::Result<T,E> as failure::result_ext::ResultExt<T,E>>::context::{{closure}}::hc1cdd825229f9a48
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/result_ext.rs:32
[INFO] [stderr]      9:     0x558d03149b41 - core::result::Result<T,E>::map_err::he83fb3a61ccceb57
[INFO] [stderr]                           at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/result.rs:612
[INFO] [stderr]     10:     0x558d0314a19d - <core::result::Result<T,E> as failure::result_ext::ResultExt<T,E>>::context::h73d467ecda214923
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/result_ext.rs:32
[INFO] [stderr]     11:     0x558d03140803 - protoc_grpcio::write_out_generated_files::h2e536d4ab22e3023
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protoc-grpcio-0.1.1/src/lib.rs:89
[INFO] [stderr]     12:     0x558d0313fe38 - protoc_grpcio::compile_grpc_protos::hd400cbd5faa44ebd
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protoc-grpcio-0.1.1/src/lib.rs:252
[INFO] [stderr]     13:     0x558d03143e80 - build_script_build::main::h78cd6e3185fd95d7
[INFO] [stderr]                           at /opt/rustwide/workdir/build.rs:7
[INFO] [stderr]     14:     0x558d0314c43a - std::rt::lang_start::{{closure}}::h5a243ddeddc54711
[INFO] [stderr]                           at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:67
[INFO] [stderr]     15:     0x558d033edb62 - std::rt::lang_start_internal::{{closure}}::h9a7ec4d0a4846786
[INFO] [stderr]                           at src/libstd/rt.rs:52
[INFO] [stderr]                            - std::panicking::try::do_call::h31d9073533c95062
[INFO] [stderr]                           at src/libstd/panicking.rs:348
[INFO] [stderr]                            - std::panicking::try::h9be90170880ba1d0
[INFO] [stderr]                           at src/libstd/panicking.rs:325
[INFO] [stderr]                            - std::panic::catch_unwind::hba3ee29aa4d47586
[INFO] [stderr]                           at src/libstd/panic.rs:394
[INFO] [stderr]                            - std::rt::lang_start_internal::h90880417661a7eb6
[INFO] [stderr]                           at src/libstd/rt.rs:51
[INFO] [stderr]     16:     0x558d0314c416 - std::rt::lang_start::h93eb8cf07233d1f6
[INFO] [stderr]                           at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:67
[INFO] [stderr]     17:     0x558d03143ef9 - main
[INFO] [stderr]     18:     0x7fc207ed10b2 - __libc_start_main
[INFO] [stderr]     19:     0x558d0313b1ad - _start
[INFO] [stderr]     20:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr]   failed to create "src/protos/snake_grpc.rs"
[INFO] [stderr] 
[INFO] [stderr]   failed to write generated grpc definitions', build.rs:11:7
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x558d033ea72f - std::backtrace_rs::backtrace::libunwind::trace::h8864605b5c3dbe2c
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x558d033ea72f - std::backtrace_rs::backtrace::trace_unsynchronized::h1f622efed412f077
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x558d033ea72f - std::sys_common::backtrace::_print_fmt::h8e17da323f21cc2b
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]      3:     0x558d033ea72f - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd4a7293426badf40
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x558d0340f92c - core::fmt::write::hfbd2baad61ed21a8
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/fmt/mod.rs:1117
[INFO] [stderr]      5:     0x558d033e7a32 - std::io::Write::write_fmt::h54828fb1bd41a052
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/io/mod.rs:1508
[INFO] [stderr]      6:     0x558d033ed150 - std::sys_common::backtrace::_print::h6ba0300926b9fb58
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x558d033ed150 - std::sys_common::backtrace::print::hd11f0188385cb859
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x558d033ed150 - std::panicking::default_hook::{{closure}}::h57b45fcdc30fe8e4
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x558d033ece9c - std::panicking::default_hook::h067cd795bad37ff3
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x558d033ed793 - std::panicking::rust_panic_with_hook::hd1b93581b69959be
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x558d033ed38b - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:437
[INFO] [stderr]     12:     0x558d0340d891 - core::panicking::panic_fmt::h9cc57011b345cfad
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/panicking.rs:85
[INFO] [stderr]     13:     0x558d0340d6b3 - core::option::expect_none_failed::h10abb5a6aef32df8
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/option.rs:1273
[INFO] [stderr]     14:     0x558d031493d6 - core::result::Result<T,E>::expect::haac44eeb3fcbcdbd
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/result.rs:963
[INFO] [stderr]     15:     0x558d03143ebb - build_script_build::main::h78cd6e3185fd95d7
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:7
[INFO] [stderr]     16:     0x558d0314c43b - std::rt::lang_start::{{closure}}::h5a243ddeddc54711
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:67
[INFO] [stderr]     17:     0x558d033edb63 - std::rt::lang_start_internal::{{closure}}::h9a7ec4d0a4846786
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:52
[INFO] [stderr]     18:     0x558d033edb63 - std::panicking::try::do_call::h31d9073533c95062
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:348
[INFO] [stderr]     19:     0x558d033edb63 - std::panicking::try::h9be90170880ba1d0
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:325
[INFO] [stderr]     20:     0x558d033edb63 - std::panic::catch_unwind::hba3ee29aa4d47586
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panic.rs:394
[INFO] [stderr]     21:     0x558d033edb63 - std::rt::lang_start_internal::h90880417661a7eb6
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:51
[INFO] [stderr]     22:     0x558d0314c417 - std::rt::lang_start::h93eb8cf07233d1f6
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:67
[INFO] [stderr]     23:     0x558d03143efa - main
[INFO] [stderr]     24:     0x7fc207ed10b3 - __libc_start_main
[INFO] [stderr]     25:     0x558d0313b1ae - _start
[INFO] [stderr]     26:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "db199709ee10b300ab6e95d632210099267788764dc3be5dd7b6b6920e1ad86e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db199709ee10b300ab6e95d632210099267788764dc3be5dd7b6b6920e1ad86e", kill_on_drop: false }`
[INFO] [stdout] db199709ee10b300ab6e95d632210099267788764dc3be5dd7b6b6920e1ad86e