[INFO] cloning repository https://github.com/PolkaLink/polka
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PolkaLink/polka" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPolkaLink%2Fpolka", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPolkaLink%2Fpolka'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a0c95c6ecd455b4ca2a3f5cc922262475e6bb8e9
[INFO] checking PolkaLink/polka against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPolkaLink%2Fpolka" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PolkaLink/polka 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 git repo https://github.com/PolkaLink/polka
[INFO] finished tweaking git repo https://github.com/PolkaLink/polka
[INFO] tweaked toml for git repo https://github.com/PolkaLink/polka written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/PolkaLink/polka 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] b43ea6ee2b0e9908b3d2b1dd7f5a89a63ab5ebf19a8fb957d391e0e03e8f40bb
[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" "b43ea6ee2b0e9908b3d2b1dd7f5a89a63ab5ebf19a8fb957d391e0e03e8f40bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b43ea6ee2b0e9908b3d2b1dd7f5a89a63ab5ebf19a8fb957d391e0e03e8f40bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b43ea6ee2b0e9908b3d2b1dd7f5a89a63ab5ebf19a8fb957d391e0e03e8f40bb", kill_on_drop: false }`
[INFO] [stdout] b43ea6ee2b0e9908b3d2b1dd7f5a89a63ab5ebf19a8fb957d391e0e03e8f40bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2d656e5614d9de866b7d914a32c0db88c5722f3db84fb0209e527278ad76a08d
[INFO] running `Command { std: "docker" "start" "-a" "2d656e5614d9de866b7d914a32c0db88c5722f3db84fb0209e527278ad76a08d", 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 syn v1.0.58
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]     Checking futures-core v0.3.11
[INFO] [stderr]     Checking futures-io v0.3.11
[INFO] [stderr]     Checking futures-sink v0.3.11
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking data-encoding v2.3.1
[INFO] [stderr]     Checking bs58 v0.3.1
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.69
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.69
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.66.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]    Compiling prometheus v0.10.0
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking lru_time_cache v0.10.0
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking wasmparser v0.59.0
[INFO] [stderr]    Compiling wasmtime-environ v0.19.0
[INFO] [stderr]     Checking wasmparser v0.57.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]     Checking bitmask v0.5.0
[INFO] [stderr]    Compiling hex-literal v0.3.1
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling platforms v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking thread_local v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.6.3
[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 futures-channel v0.3.11
[INFO] [stderr]     Checking quicksink v0.1.2
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking wast v31.0.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking lru v0.6.3
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]    Compiling substrate-build-script-utils v2.0.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking getrandom v0.2.1
[INFO] [stderr]     Checking fs-swap v0.2.5
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking rpassword v4.0.5
[INFO] [stderr]     Checking fdlimit v0.2.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking tiny-keccak v2.0.2
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling wasm-gc-api v0.1.11
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking trie-db v0.22.2
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking regalloc v0.0.27
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking pwasm-utils v0.14.0
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]    Compiling node-template v2.0.1 (/opt/rustwide/workdir/node)
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking miow v0.3.6
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking statrs v0.10.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking parity-db v0.1.2
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]     Checking sha-1 v0.9.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking wat v1.0.32
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking cuckoofilter v0.3.2
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking names v0.11.0
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.6
[INFO] [stderr]     Checking futures-task v0.3.11
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking sp-panic-handler v2.0.1
[INFO] [stderr]     Checking salsa20 v0.6.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.2
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio v0.2.24
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking async-process v1.0.1
[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.6
[INFO] [stderr]     Checking file-per-thread-logger v0.1.4
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking const-random v0.1.13
[INFO] [stderr]     Checking async-std v1.8.0
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking fixed-hash v0.6.1
[INFO] [stderr]     Checking twox-hash v1.6.0
[INFO] [stderr]     Checking parity-ws v0.10.0
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling zstd-sys v1.4.18+zstd.1.4.7
[INFO] [stderr]    Compiling raw-cpuid v7.0.4
[INFO] [stderr]    Compiling wasmtime-runtime v0.19.0
[INFO] [stderr] error: could not compile `clap`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name clap /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.3/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 --cfg 'feature="ansi_term"' --cfg 'feature="atty"' --cfg 'feature="color"' --cfg 'feature="default"' --cfg 'feature="strsim"' --cfg 'feature="suggestions"' --cfg 'feature="vec_map"' -C metadata=13c8617845dc6bd0 -C extra-filename=-13c8617845dc6bd0 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-b7c7e94976e9eae7.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-508d93ba114508b4.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-7f78c1de5599d643.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-66e58bd8aecd9c6e.rmeta --extern textwrap=/opt/rustwide/target/debug/deps/libtextwrap-72726d2ca165c499.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-9ab5865733e9acc9.rmeta --extern vec_map=/opt/rustwide/target/debug/deps/libvec_map-6ca2ab92fd8f89b6.rmeta --cap-lints allow --cap-lints=forbid` (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" "2d656e5614d9de866b7d914a32c0db88c5722f3db84fb0209e527278ad76a08d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d656e5614d9de866b7d914a32c0db88c5722f3db84fb0209e527278ad76a08d", kill_on_drop: false }`
[INFO] [stdout] 2d656e5614d9de866b7d914a32c0db88c5722f3db84fb0209e527278ad76a08d