[INFO] cloning 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" "clone" "--bare" "https://github.com/williamhogman/rusty-snek" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamhogman%2Frusty-snek", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamhogman%2Frusty-snek'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b06b5188c9ff28fd7a05eea4c287985f5cb59c2d
[INFO] testing williamhogman/rusty-snek against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamhogman%2Frusty-snek" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/williamhogman/rusty-snek on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-2/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]  Downloading crates ...
[INFO] [stderr]   Downloaded protoc-grpcio v0.1.1
[INFO] [stderr]   Downloaded protoc v1.7.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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] 31f7e83a3a5323386d597d48bb148c86ab1819d0b8df98e445366cd28320e735
[INFO] running `Command { std: "docker" "start" "-a" "31f7e83a3a5323386d597d48bb148c86ab1819d0b8df98e445366cd28320e735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31f7e83a3a5323386d597d48bb148c86ab1819d0b8df98e445366cd28320e735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f7e83a3a5323386d597d48bb148c86ab1819d0b8df98e445366cd28320e735", kill_on_drop: false }`
[INFO] [stdout] 31f7e83a3a5323386d597d48bb148c86ab1819d0b8df98e445366cd28320e735
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8896e4ec1b359bfd0361d9de5cf1c5d281c77b837db8754db80a0f6bd6f4f0fe
[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" "8896e4ec1b359bfd0361d9de5cf1c5d281c77b837db8754db80a0f6bd6f4f0fe", 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]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling protobuf v1.7.3
[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]    Compiling rand_core v0.2.0
[INFO] [stderr]    Compiling futures v0.1.21
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling protoc v1.7.3
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling rand v0.5.0
[INFO] [stderr]    Compiling cmake v0.1.31
[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 rand v0.3.22
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling uuid v0.1.18
[INFO] [stderr]    Compiling mktemp v0.3.1
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling failure v0.1.1
[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:     0x558d004a9b53 - backtrace::backtrace::libunwind::trace::h203a072bdac8fdc1
[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::hb800c29ceee1de42
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.8/src/backtrace/mod.rs:42
[INFO] [stderr]      1:     0x558d004a6a43 - 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:     0x558d004a5215 - 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:     0x558d004a3dbc - 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:     0x558d00475ae7 - <failure::error::Error as core::convert::From<F>>::from::h6c9f011e6758683e
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/error.rs:34
[INFO] [stderr]      5:     0x558d00476f0e - <T as core::convert::Into<U>>::into::h9b58bcc154ea3a43
[INFO] [stderr]                           at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libcore/convert/mod.rs:563
[INFO] [stderr]      6:     0x558d0046cf4d - failure::context::Context<D>::with_err::hde10a453a127b285
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/context.rs:78
[INFO] [stderr]      7:     0x558d00477595 - failure::Fail::context::he84ee971c34498c6
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/lib.rs:127
[INFO] [stderr]      8:     0x558d0046c675 - <core::result::Result<T,E> as failure::result_ext::ResultExt<T,E>>::context::{{closure}}::h2b373542d230a146
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/result_ext.rs:32
[INFO] [stderr]      9:     0x558d00473991 - core::result::Result<T,E>::map_err::h60f8c2433f15da22
[INFO] [stderr]                           at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libcore/result.rs:612
[INFO] [stderr]     10:     0x558d0047446d - <core::result::Result<T,E> as failure::result_ext::ResultExt<T,E>>::context::hb434f558e6f6e24b
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/result_ext.rs:32
[INFO] [stderr]     11:     0x558d0046a8a3 - protoc_grpcio::write_out_generated_files::h7794a40740b669d9
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protoc-grpcio-0.1.1/src/lib.rs:89
[INFO] [stderr]     12:     0x558d00469ed8 - protoc_grpcio::compile_grpc_protos::hea49eda8dfcfd159
[INFO] [stderr]                           at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protoc-grpcio-0.1.1/src/lib.rs:252
[INFO] [stderr]     13:     0x558d0046d860 - build_script_build::main::h78cd6e3185fd95d7
[INFO] [stderr]                           at /opt/rustwide/workdir/build.rs:7
[INFO] [stderr]     14:     0x558d0047664a - std::rt::lang_start::{{closure}}::hba5a5d3e9046e4a8
[INFO] [stderr]                           at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/rt.rs:67
[INFO] [stderr]     15:     0x558d0070e952 - std::rt::lang_start_internal::{{closure}}::h155f3093add35bce
[INFO] [stderr]                           at src/libstd/rt.rs:52
[INFO] [stderr]                            - std::panicking::try::do_call::h45f1f66ee6b987d6
[INFO] [stderr]                           at src/libstd/panicking.rs:348
[INFO] [stderr]                            - std::panicking::try::h0924dfb942cef7e3
[INFO] [stderr]                           at src/libstd/panicking.rs:325
[INFO] [stderr]                            - std::panic::catch_unwind::h883180846c5b53fa
[INFO] [stderr]                           at src/libstd/panic.rs:394
[INFO] [stderr]                            - std::rt::lang_start_internal::he9284d43a52786c5
[INFO] [stderr]                           at src/libstd/rt.rs:51
[INFO] [stderr]     16:     0x558d00476626 - std::rt::lang_start::h0342ba39982287ce
[INFO] [stderr]                           at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/rt.rs:67
[INFO] [stderr]     17:     0x558d0046d8d9 - main
[INFO] [stderr]     18:     0x7f99b9add0b2 - __libc_start_main
[INFO] [stderr]     19:     0x558d004651cd - _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:     0x558d0070b5e5 - backtrace::backtrace::libunwind::trace::hea89dfbbfe67f40d
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]      1:     0x558d0070b5e5 - backtrace::backtrace::trace_unsynchronized::h0513dd713d7644d4
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x558d0070b5e5 - std::sys_common::backtrace::_print_fmt::h040abae64e4a24a9
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]      3:     0x558d0070b5e5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb4bdb37c3c335733
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]      4:     0x558d0073492c - core::fmt::write::h540ac4a6a1232abc
[INFO] [stderr]                                  at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]      5:     0x558d00708902 - std::io::Write::write_fmt::h5ffa1b5a7703af47
[INFO] [stderr]                                  at src/libstd/io/mod.rs:1539
[INFO] [stderr]      6:     0x558d0070df40 - std::sys_common::backtrace::_print::hb55cc635eaf1882e
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]      7:     0x558d0070df40 - std::sys_common::backtrace::print::h2b2218fa55714084
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]      8:     0x558d0070df40 - std::panicking::default_hook::{{closure}}::h578517c025765cf3
[INFO] [stderr]                                  at src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x558d0070dc8c - std::panicking::default_hook::h4cafc94c2fc640fb
[INFO] [stderr]                                  at src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x558d0070e583 - std::panicking::rust_panic_with_hook::h3eeb5001beeca5c3
[INFO] [stderr]                                  at src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x558d0070e17b - rust_begin_unwind
[INFO] [stderr]                                  at src/libstd/panicking.rs:437
[INFO] [stderr]     12:     0x558d00732891 - core::panicking::panic_fmt::h78830ea6a34e7206
[INFO] [stderr]                                  at src/libcore/panicking.rs:85
[INFO] [stderr]     13:     0x558d007326b3 - core::option::expect_none_failed::hf79bbb5ca7e09e08
[INFO] [stderr]                                  at src/libcore/option.rs:1269
[INFO] [stderr]     14:     0x558d00473636 - core::result::Result<T,E>::expect::h63f4e6e287607431
[INFO] [stderr]                                  at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libcore/result.rs:963
[INFO] [stderr]     15:     0x558d0046d89b - build_script_build::main::h78cd6e3185fd95d7
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:7
[INFO] [stderr]     16:     0x558d0047664b - std::rt::lang_start::{{closure}}::hba5a5d3e9046e4a8
[INFO] [stderr]                                  at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/rt.rs:67
[INFO] [stderr]     17:     0x558d0070e953 - std::rt::lang_start_internal::{{closure}}::h155f3093add35bce
[INFO] [stderr]                                  at src/libstd/rt.rs:52
[INFO] [stderr]     18:     0x558d0070e953 - std::panicking::try::do_call::h45f1f66ee6b987d6
[INFO] [stderr]                                  at src/libstd/panicking.rs:348
[INFO] [stderr]     19:     0x558d0070e953 - std::panicking::try::h0924dfb942cef7e3
[INFO] [stderr]                                  at src/libstd/panicking.rs:325
[INFO] [stderr]     20:     0x558d0070e953 - std::panic::catch_unwind::h883180846c5b53fa
[INFO] [stderr]                                  at src/libstd/panic.rs:394
[INFO] [stderr]     21:     0x558d0070e953 - std::rt::lang_start_internal::he9284d43a52786c5
[INFO] [stderr]                                  at src/libstd/rt.rs:51
[INFO] [stderr]     22:     0x558d00476627 - std::rt::lang_start::h0342ba39982287ce
[INFO] [stderr]                                  at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/rt.rs:67
[INFO] [stderr]     23:     0x558d0046d8da - main
[INFO] [stderr]     24:     0x7f99b9add0b3 - __libc_start_main
[INFO] [stderr]     25:     0x558d004651ce - _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" "8896e4ec1b359bfd0361d9de5cf1c5d281c77b837db8754db80a0f6bd6f4f0fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8896e4ec1b359bfd0361d9de5cf1c5d281c77b837db8754db80a0f6bd6f4f0fe", kill_on_drop: false }`
[INFO] [stdout] 8896e4ec1b359bfd0361d9de5cf1c5d281c77b837db8754db80a0f6bd6f4f0fe