[INFO] cloning repository https://github.com/zcash/librustzcash
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zcash/librustzcash" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash%2Flibrustzcash", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash%2Flibrustzcash'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97b94e758aa2ea7d18c5875505d12ce35f3265e5
[INFO] checking zcash/librustzcash against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash%2Flibrustzcash" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zcash/librustzcash on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zcash/librustzcash
[INFO] finished tweaking git repo https://github.com/zcash/librustzcash
[INFO] tweaked toml for git repo https://github.com/zcash/librustzcash written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6affa594a7c5fd4fcd5a2be62a832e8b34c35d553198791c2f7c51c5ee837830
[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" "6affa594a7c5fd4fcd5a2be62a832e8b34c35d553198791c2f7c51c5ee837830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6affa594a7c5fd4fcd5a2be62a832e8b34c35d553198791c2f7c51c5ee837830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6affa594a7c5fd4fcd5a2be62a832e8b34c35d553198791c2f7c51c5ee837830", kill_on_drop: false }`
[INFO] [stdout] 6affa594a7c5fd4fcd5a2be62a832e8b34c35d553198791c2f7c51c5ee837830
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1793a77d1ea165d465bfc3e715b2ca21125634061f435e9ba366339d65087543
[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" "1793a77d1ea165d465bfc3e715b2ca21125634061f435e9ba366339d65087543", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]    Compiling radium v0.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking crypto_api v0.2.2
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking bech32 v0.7.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling standback v0.2.15
[INFO] [stderr]    Compiling time v0.2.25
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.20.1
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[INFO] [stderr]     Checking crypto_api_chachapoly v0.4.3
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling protobuf v2.22.0
[INFO] [stderr]     Checking hashlink v0.6.0
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking crossbeam-utils v0.8.1
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]    Compiling hex-literal-impl v0.2.2
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking serde_json v1.0.62
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking equihash v0.1.0 (/opt/rustwide/workdir/components/equihash)
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking directories v3.0.1
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking bitvec v0.18.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking bigint v4.4.3
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking tinytemplate v1.2.0
[INFO] [stderr]     Checking block-cipher v0.8.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking hex-literal v0.2.1
[INFO] [stderr]     Checking bs58 v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking aes-soft v0.5.0
[INFO] [stderr]     Checking block-modes v0.6.1
[INFO] [stderr]     Checking sha2 v0.9.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking zcash_history v0.2.0 (/opt/rustwide/workdir/zcash_history)
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking aes v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling protobuf-codegen v2.22.0
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking fpe v0.3.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking ff v0.8.0
[INFO] [stderr]     Checking group v0.8.0
[INFO] [stderr]     Checking proptest v0.10.1
[INFO] [stderr]     Checking pairing v0.18.0
[INFO] [stderr]     Checking bls12_381 v0.3.1
[INFO] [stderr]     Checking bellman v0.8.1
[INFO] [stderr]    Compiling protobuf-codegen-pure v2.22.0
[INFO] [stderr]     Checking jubjub v0.5.1
[INFO] [stderr] error: could not compile `protobuf`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name protobuf --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/protobuf-2.22.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=133cb6a1ec377faf -C extra-filename=-133cb6a1ec377faf --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1793a77d1ea165d465bfc3e715b2ca21125634061f435e9ba366339d65087543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1793a77d1ea165d465bfc3e715b2ca21125634061f435e9ba366339d65087543", kill_on_drop: false }`
[INFO] [stdout] 1793a77d1ea165d465bfc3e715b2ca21125634061f435e9ba366339d65087543