[INFO] updating cached repository https://github.com/cynomys/cyno
[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] ec86bde0a7f677762c2999ac2a8b92d24234af0c
[INFO] checking cynomys/cyno against master#74e80468347471779be6060d8d7d6d04e98e467f for pr-72788
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcynomys%2Fcyno" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cynomys/cyno on toolchain 74e80468347471779be6060d8d7d6d04e98e467f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cynomys/cyno
[INFO] finished tweaking git repo https://github.com/cynomys/cyno
[INFO] tweaked toml for git repo https://github.com/cynomys/cyno written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/cynomys/cyno already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+74e80468347471779be6060d8d7d6d04e98e467f" "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] b832e1856907ddc2814455153a6c661f3569de39d863ad9d56f117dd5d98c687
[INFO] running `"docker" "start" "-a" "b832e1856907ddc2814455153a6c661f3569de39d863ad9d56f117dd5d98c687"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]    Compiling protobuf v2.3.0
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]    Compiling bio v0.25.0
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking opaque-debug v0.2.2
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling bv v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking bit-set v0.5.0
[INFO] [stderr]    Compiling cmake v0.1.35
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling protoc v2.3.0
[INFO] [stderr]     Checking approx v0.3.1
[INFO] [stderr]     Checking ordered-float v1.0.1
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking generic-array v0.12.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]     Checking digest v0.8.0
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking blake2 v0.8.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling grpcio-sys v0.4.4
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking statrs v0.9.0
[INFO] [stderr]    Compiling tempfile v3.0.7
[INFO] [stderr]    Compiling protobuf-codegen v2.3.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling grpcio-compiler v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.88
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling protoc-grpcio v1.0.1
[INFO] [stderr]    Compiling dgraph v0.1.2
[INFO] [stderr] error: failed to run custom build command for `dgraph v0.1.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/dgraph-2f656ea87150461e/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: failure::backtrace::internal::InternalBacktrace::new::h6bc345745499895b (0x562919c6879b)
[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::h68bee184451161a7 (0x562919c66e4d)
[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::haa710ef1c94333bc (0x562919c1fbac)
[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::h6814a6308a8e3eb7 (0x562919c22a9e)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/error/mod.rs:36
[INFO] [stderr]    4: <T as core::convert::Into<U>>::into::h89ccb9d2451cf851 (0x562919c1eaee)
[INFO] [stderr]              at /rustc/74e80468347471779be6060d8d7d6d04e98e467f/src/libcore/convert/mod.rs:559
[INFO] [stderr]    5: failure::context::Context<D>::with_err::h953b13151cf6be09 (0x562919c1611d)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/context.rs:105
[INFO] [stderr]    6: failure::Fail::context::h87bc1cac3e9a97fc (0x562919c1ece5)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/lib.rs:160
[INFO] [stderr]    7: <core::result::Result<T,E> as failure::result_ext::ResultExt<T,E>>::context::{{closure}}::hf05cc377030a9e6d (0x562919c22e05)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/result_ext.rs:164
[INFO] [stderr]    8: core::result::Result<T,E>::map_err::h53bc3a9098d949dd (0x562919c1c791)
[INFO] [stderr]              at /rustc/74e80468347471779be6060d8d7d6d04e98e467f/src/libcore/result.rs:612
[INFO] [stderr]    9: <core::result::Result<T,E> as failure::result_ext::ResultExt<T,E>>::context::hefeb26c057f2f331 (0x562919c1d35d)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.5/src/result_ext.rs:164
[INFO] [stderr]   10: protoc_grpcio::write_out_generated_files::he2fb793f2916f894 (0x562919c13c7e)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protoc-grpcio-1.0.1/src/lib.rs:91
[INFO] [stderr]   11: protoc_grpcio::compile_grpc_protos::h3e252d24f241db1e (0x562919c12f93)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protoc-grpcio-1.0.1/src/lib.rs:260
[INFO] [stderr]   12: build_script_build::main::h8a75ff607ddac365 (0x562919c22f00)
[INFO] [stderr]              at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dgraph-0.1.2/build.rs:7
[INFO] [stderr]   13: std::rt::lang_start::{{closure}}::ha249802e1d87c5e9 (0x562919c21c7a)
[INFO] [stderr]              at /rustc/74e80468347471779be6060d8d7d6d04e98e467f/src/libstd/rt.rs:67
[INFO] [stderr]   14: std::rt::lang_start_internal::{{closure}}::h4c8bd631e3dc2cb9 (0x562919ec6bd7)
[INFO] [stderr]              at src/libstd/rt.rs:52
[INFO] [stderr]       std::panicking::try::do_call::h88ce8513ed0d613c
[INFO] [stderr]              at src/libstd/panicking.rs:297
[INFO] [stderr]       std::panicking::try::he181ad9c483671e2
[INFO] [stderr]              at src/libstd/panicking.rs:274
[INFO] [stderr]       std::panic::catch_unwind::heb113c382f4c732f
[INFO] [stderr]              at src/libstd/panic.rs:394
[INFO] [stderr]       std::rt::lang_start_internal::h807304d390ed60ab
[INFO] [stderr]              at src/libstd/rt.rs:51
[INFO] [stderr]   15: std::rt::lang_start::hac33fd891246f30e (0x562919c21c56)
[INFO] [stderr]              at /rustc/74e80468347471779be6060d8d7d6d04e98e467f/src/libstd/rt.rs:67
[INFO] [stderr]   16: main (0x562919c22f79)
[INFO] [stderr]   17: __libc_start_main (0x7fe04fa550b2)
[INFO] [stderr]   18: _start (0x562919c0e1cd)
[INFO] [stderr]   19: <unknown> (0x0)
[INFO] [stderr] 
[INFO] [stderr] failed to create "src/protos/api_grpc.rs"
[INFO] [stderr] 
[INFO] [stderr] failed to write generated grpc definitions', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dgraph-0.1.2/build.rs:7:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x562919ec3bc5 - backtrace::backtrace::libunwind::trace::h508d2c55eb856ef2
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x562919ec3bc5 - backtrace::backtrace::trace_unsynchronized::h31c9d8a0097b92f8
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x562919ec3bc5 - std::sys_common::backtrace::_print_fmt::h520f528c4c103a3f
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x562919ec3bc5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf4dec5da8360bccb
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x562919eed06c - core::fmt::write::hdf236390fbd68d3d
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]    5:     0x562919ec1013 - std::io::Write::write_fmt::hd33447f61d92a88a
[INFO] [stderr]                                at src/libstd/io/mod.rs:1537
[INFO] [stderr]    6:     0x562919ec61d0 - std::sys_common::backtrace::_print::h856c809943c588ab
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x562919ec61d0 - std::sys_common::backtrace::print::hc042b4237cc3648a
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x562919ec61d0 - std::panicking::default_hook::{{closure}}::h35997132c163f935
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    9:     0x562919ec5f1c - std::panicking::default_hook::h8555bf398b0f1318
[INFO] [stderr]                                at src/libstd/panicking.rs:218
[INFO] [stderr]   10:     0x562919ec6807 - std::panicking::rust_panic_with_hook::h9b80e82887819c44
[INFO] [stderr]                                at src/libstd/panicking.rs:486
[INFO] [stderr]   11:     0x562919ec640b - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:388
[INFO] [stderr]   12:     0x562919eeafd1 - core::panicking::panic_fmt::hd101a87121fa411f
[INFO] [stderr]                                at src/libcore/panicking.rs:101
[INFO] [stderr]   13:     0x562919eeadf3 - core::option::expect_none_failed::h4f0e89faa3179bf7
[INFO] [stderr]                                at src/libcore/option.rs:1272
[INFO] [stderr]   14:     0x562919c1c456 - core::result::Result<T,E>::expect::h278ab716fbc319fd
[INFO] [stderr]                                at /rustc/74e80468347471779be6060d8d7d6d04e98e467f/src/libcore/result.rs:963
[INFO] [stderr]   15:     0x562919c22f3b - build_script_build::main::h8a75ff607ddac365
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dgraph-0.1.2/build.rs:7
[INFO] [stderr]   16:     0x562919c21c7b - std::rt::lang_start::{{closure}}::ha249802e1d87c5e9
[INFO] [stderr]                                at /rustc/74e80468347471779be6060d8d7d6d04e98e467f/src/libstd/rt.rs:67
[INFO] [stderr]   17:     0x562919ec6bd8 - std::rt::lang_start_internal::{{closure}}::h4c8bd631e3dc2cb9
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   18:     0x562919ec6bd8 - std::panicking::try::do_call::h88ce8513ed0d613c
[INFO] [stderr]                                at src/libstd/panicking.rs:297
[INFO] [stderr]   19:     0x562919ec6bd8 - std::panicking::try::he181ad9c483671e2
[INFO] [stderr]                                at src/libstd/panicking.rs:274
[INFO] [stderr]   20:     0x562919ec6bd8 - std::panic::catch_unwind::heb113c382f4c732f
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   21:     0x562919ec6bd8 - std::rt::lang_start_internal::h807304d390ed60ab
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   22:     0x562919c21c57 - std::rt::lang_start::hac33fd891246f30e
[INFO] [stderr]                                at /rustc/74e80468347471779be6060d8d7d6d04e98e467f/src/libstd/rt.rs:67
[INFO] [stderr]   23:     0x562919c22f7a - main
[INFO] [stderr]   24:     0x7fe04fa550b3 - __libc_start_main
[INFO] [stderr]   25:     0x562919c0e1ce - _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" "b832e1856907ddc2814455153a6c661f3569de39d863ad9d56f117dd5d98c687"`
[INFO] running `"docker" "rm" "-f" "b832e1856907ddc2814455153a6c661f3569de39d863ad9d56f117dd5d98c687"`
[INFO] [stdout] b832e1856907ddc2814455153a6c661f3569de39d863ad9d56f117dd5d98c687