[INFO] fetching crate exonum-merkledb 1.0.0...
[INFO] checking exonum-merkledb-1.0.0 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate exonum-merkledb 1.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate exonum-merkledb 1.0.0 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exonum-merkledb 1.0.0
[INFO] finished tweaking crates.io crate exonum-merkledb 1.0.0
[INFO] tweaked toml for crates.io crate exonum-merkledb 1.0.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate exonum-merkledb 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 932d3ce7a1c12edf6a09a135700518da650e260d3f4ce1b6bf5584b0727c55be
[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" "932d3ce7a1c12edf6a09a135700518da650e260d3f4ce1b6bf5584b0727c55be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "932d3ce7a1c12edf6a09a135700518da650e260d3f4ce1b6bf5584b0727c55be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "932d3ce7a1c12edf6a09a135700518da650e260d3f4ce1b6bf5584b0727c55be", kill_on_drop: false }`
[INFO] [stdout] 932d3ce7a1c12edf6a09a135700518da650e260d3f4ce1b6bf5584b0727c55be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4253208112e8c4fe29ddca67f63655bcad52ff305b8ab1672b1a14af67750b43
[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" "4253208112e8c4fe29ddca67f63655bcad52ff305b8ab1672b1a14af67750b43", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]     Checking bit-vec v0.5.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking oorandom v11.1.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking plotters v0.2.12
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking bit-set v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking criterion-plot v0.4.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]     Checking proptest v0.9.5
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling bindgen v0.53.2
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking base64-serde v0.5.0
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking serde_json v1.0.50
[INFO] [stderr]     Checking exonum_sodiumoxide v0.0.23
[INFO] [stderr]     Checking rust_decimal v1.4.0
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling thiserror-impl v1.0.14
[INFO] [stderr]    Compiling ctor v0.1.13
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking thiserror v1.0.14
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling exonum-derive v1.0.0
[INFO] [stderr]    Compiling librocksdb-sys v6.6.4
[INFO] [stderr]    Compiling protobuf v2.12.0
[INFO] [stderr]     Checking criterion v0.3.1
[INFO] [stderr] error: could not compile `protobuf`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name protobuf /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protobuf-2.12.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="serde"' --cfg 'feature="serde_derive"' --cfg 'feature="with-serde"' -C metadata=c7523fd859c3f547 -C extra-filename=-c7523fd859c3f547 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern serde=/opt/rustwide/target/debug/deps/libserde-a1fb3c3858f9c8b2.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-6a6394c30618d043.so --cap-lints allow --cap-lints=forbid --cfg rustc_nightly` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4253208112e8c4fe29ddca67f63655bcad52ff305b8ab1672b1a14af67750b43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4253208112e8c4fe29ddca67f63655bcad52ff305b8ab1672b1a14af67750b43", kill_on_drop: false }`
[INFO] [stdout] 4253208112e8c4fe29ddca67f63655bcad52ff305b8ab1672b1a14af67750b43