[INFO] updating cached repository https://github.com/williamhogman/rusty-snek
[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] b06b5188c9ff28fd7a05eea4c287985f5cb59c2d
[INFO] checking williamhogman/rusty-snek against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliamhogman%2Frusty-snek" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/williamhogman/rusty-snek on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-14/source/Cargo.toml
[INFO] crate git repo https://github.com/williamhogman/rusty-snek already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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-14/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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "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] 74f7403264e2421798dd7db38f6991131eb618b744ec07e1a2630afd22b5723a
[INFO] running `"docker" "start" "-a" "74f7403264e2421798dd7db38f6991131eb618b744ec07e1a2630afd22b5723a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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 cc v1.0.17
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling protobuf v1.7.3
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]     Checking rand_core v0.2.0
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling protoc v1.7.3
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]     Checking rand v0.5.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling grpcio-sys v0.2.3
[INFO] [stderr]    Compiling rand v0.3.22
[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-8d41e3c24d861ee9/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:     0x55cdba1a82d3 - backtrace::backtrace::libunwind::trace::hc59a9ffef5c34e90
[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::h2505f2949f2a1320
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.8/src/backtrace/mod.rs:42
[INFO] [stderr]    1:     0x55cdba1a5705 - backtrace::capture::Backtrace::new_unresolved::h9c90960fe497bbba
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.8/src/capture.rs:88
[INFO] [stderr]    2:     0x55cdba1a3bbb - failure::backtrace::internal::InternalBacktrace::new::he21a8aded6d54ab2
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/backtrace/internal.rs:44
[INFO] [stderr]    3:     0x55cdba1a2b6c - failure::backtrace::Backtrace::new::hccbd3e72a5366f76
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/backtrace/mod.rs:98
[INFO] [stderr]    4:     0x55cdba174728 - <failure::error::Error as core::convert::From<F>>::from::hb51cc01f874a9204
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/error.rs:34
[INFO] [stderr]    5:     0x55cdba17598e - <T as core::convert::Into<U>>::into::ha8ac2d1d95c04d5a
[INFO] [stderr]                         at /rustc/783139bd8fc3b94fac9a1bf81bba2c506e8221b6/src/libcore/convert/mod.rs:559
[INFO] [stderr]    6:     0x55cdba16c12d - failure::context::Context<D>::with_err::h929077d59d0aafbe
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/context.rs:78
[INFO] [stderr]    7:     0x55cdba175f35 - failure::Fail::context::h832e7834fc45dc4a
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/lib.rs:127
[INFO] [stderr]    8:     0x55cdba178165 - <core::result::Result<T,E> as failure::result_ext::ResultExt<T,E>>::context::{{closure}}::hb735148b277a9b68
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/result_ext.rs:32
[INFO] [stderr]    9:     0x55cdba172451 - core::result::Result<T,E>::map_err::h3207492a30de00b6
[INFO] [stderr]                         at /rustc/783139bd8fc3b94fac9a1bf81bba2c506e8221b6/src/libcore/result.rs:612
[INFO] [stderr]   10:     0x55cdba172dbd - <core::result::Result<T,E> as failure::result_ext::ResultExt<T,E>>::context::ha74c675f084c14c0
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.1/src/result_ext.rs:32
[INFO] [stderr]   11:     0x55cdba16975a - protoc_grpcio::write_out_generated_files::hb4c23b4c8203d1dd
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protoc-grpcio-0.1.1/src/lib.rs:89
[INFO] [stderr]   12:     0x55cdba168c27 - protoc_grpcio::compile_grpc_protos::h722a4a90053e8aca
[INFO] [stderr]                         at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protoc-grpcio-0.1.1/src/lib.rs:252
[INFO] [stderr]   13:     0x55cdba16cac0 - build_script_build::main::h4f7a3e8687303d46
[INFO] [stderr]                         at /opt/rustwide/workdir/build.rs:7
[INFO] [stderr]   14:     0x55cdba1751fa - std::rt::lang_start::{{closure}}::hd54a3d29bbcfdbb2
[INFO] [stderr]                         at /rustc/783139bd8fc3b94fac9a1bf81bba2c506e8221b6/src/libstd/rt.rs:67
[INFO] [stderr]   15:     0x55cdba40d0d7 - std::rt::lang_start_internal::{{closure}}::h20875b53e93c05e5
[INFO] [stderr]                         at src/libstd/rt.rs:52
[INFO] [stderr]                          - std::panicking::try::do_call::hf41a9e99b462682c
[INFO] [stderr]                         at src/libstd/panicking.rs:297
[INFO] [stderr]                          - std::panicking::try::h676e31cbf6db58e0
[INFO] [stderr]                         at src/libstd/panicking.rs:274
[INFO] [stderr]                          - std::panic::catch_unwind::h254ef3e93964825b
[INFO] [stderr]                         at src/libstd/panic.rs:394
[INFO] [stderr]                          - std::rt::lang_start_internal::h8a620deb31f7711f
[INFO] [stderr]                         at src/libstd/rt.rs:51
[INFO] [stderr]   16:     0x55cdba1751d6 - std::rt::lang_start::h24f456cafed5d967
[INFO] [stderr]                         at /rustc/783139bd8fc3b94fac9a1bf81bba2c506e8221b6/src/libstd/rt.rs:67
[INFO] [stderr]   17:     0x55cdba16cb39 - main
[INFO] [stderr]   18:     0x7f5491d8c0b2 - __libc_start_main
[INFO] [stderr]   19:     0x55cdba1641cd - _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:7:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55cdba409c35 - backtrace::backtrace::libunwind::trace::h678b9599e62f63eb
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x55cdba409c35 - backtrace::backtrace::trace_unsynchronized::hc151481f0e2d39cd
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55cdba409c35 - std::sys_common::backtrace::_print_fmt::he1b14c2dc4d370e2
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x55cdba409c35 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h0e056b70ceff915d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x55cdba43314c - core::fmt::write::hdf236390fbd68d3d
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]    5:     0x55cdba4070a3 - std::io::Write::write_fmt::h5b95d57b9d83617e
[INFO] [stderr]                                at src/libstd/io/mod.rs:1537
[INFO] [stderr]    6:     0x55cdba40c6d0 - std::sys_common::backtrace::_print::hde4f93cf630dd149
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x55cdba40c6d0 - std::sys_common::backtrace::print::hab894e5c65d4445d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x55cdba40c6d0 - std::panicking::default_hook::{{closure}}::h190ee58e2eec052f
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    9:     0x55cdba40c41c - std::panicking::default_hook::he2b0e031648f6bed
[INFO] [stderr]                                at src/libstd/panicking.rs:218
[INFO] [stderr]   10:     0x55cdba40cd07 - std::panicking::rust_panic_with_hook::hd8d0481ab65c637b
[INFO] [stderr]                                at src/libstd/panicking.rs:486
[INFO] [stderr]   11:     0x55cdba40c90b - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:388
[INFO] [stderr]   12:     0x55cdba4310b1 - core::panicking::panic_fmt::hd101a87121fa411f
[INFO] [stderr]                                at src/libcore/panicking.rs:101
[INFO] [stderr]   13:     0x55cdba430ed3 - core::option::expect_none_failed::h4f0e89faa3179bf7
[INFO] [stderr]                                at src/libcore/option.rs:1272
[INFO] [stderr]   14:     0x55cdba172056 - core::result::Result<T,E>::expect::h88382dc51fd28321
[INFO] [stderr]                                at /rustc/783139bd8fc3b94fac9a1bf81bba2c506e8221b6/src/libcore/result.rs:963
[INFO] [stderr]   15:     0x55cdba16cafb - build_script_build::main::h4f7a3e8687303d46
[INFO] [stderr]                                at /opt/rustwide/workdir/build.rs:7
[INFO] [stderr]   16:     0x55cdba1751fb - std::rt::lang_start::{{closure}}::hd54a3d29bbcfdbb2
[INFO] [stderr]                                at /rustc/783139bd8fc3b94fac9a1bf81bba2c506e8221b6/src/libstd/rt.rs:67
[INFO] [stderr]   17:     0x55cdba40d0d8 - std::rt::lang_start_internal::{{closure}}::h20875b53e93c05e5
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   18:     0x55cdba40d0d8 - std::panicking::try::do_call::hf41a9e99b462682c
[INFO] [stderr]                                at src/libstd/panicking.rs:297
[INFO] [stderr]   19:     0x55cdba40d0d8 - std::panicking::try::h676e31cbf6db58e0
[INFO] [stderr]                                at src/libstd/panicking.rs:274
[INFO] [stderr]   20:     0x55cdba40d0d8 - std::panic::catch_unwind::h254ef3e93964825b
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   21:     0x55cdba40d0d8 - std::rt::lang_start_internal::h8a620deb31f7711f
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   22:     0x55cdba1751d7 - std::rt::lang_start::h24f456cafed5d967
[INFO] [stderr]                                at /rustc/783139bd8fc3b94fac9a1bf81bba2c506e8221b6/src/libstd/rt.rs:67
[INFO] [stderr]   23:     0x55cdba16cb3a - main
[INFO] [stderr]   24:     0x7f5491d8c0b3 - __libc_start_main
[INFO] [stderr]   25:     0x55cdba1641ce - _start
[INFO] [stderr]   26:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "74f7403264e2421798dd7db38f6991131eb618b744ec07e1a2630afd22b5723a"`
[INFO] running `"docker" "rm" "-f" "74f7403264e2421798dd7db38f6991131eb618b744ec07e1a2630afd22b5723a"`
[INFO] [stdout] 74f7403264e2421798dd7db38f6991131eb618b744ec07e1a2630afd22b5723a