[INFO] cloning repository https://github.com/Zombieliu/homework6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Zombieliu/homework6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZombieliu%2Fhomework6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZombieliu%2Fhomework6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a30adae88fc9cdd1482eb7cf63764e3ce30f78b
[INFO] checking Zombieliu/homework6 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZombieliu%2Fhomework6" "/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/Zombieliu/homework6 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/Zombieliu/homework6
[INFO] finished tweaking git repo https://github.com/Zombieliu/homework6
[INFO] tweaked toml for git repo https://github.com/Zombieliu/homework6 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Zombieliu/homework6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-executor v0.3.11
[INFO] [stderr]   Downloaded futures-channel v0.3.11
[INFO] [stderr]   Downloaded sc-rpc-server v2.0.1
[INFO] [stderr]   Downloaded futures-task v0.3.11
[INFO] [stderr]   Downloaded blake2b_simd v0.5.11
[INFO] [stderr]   Downloaded jsonrpc-ws-server v15.1.0
[INFO] [stderr]   Downloaded sc-block-builder v0.8.1
[INFO] [stderr]   Downloaded sc-keystore v2.0.1
[INFO] [stderr]   Downloaded fdlimit v0.2.1
[INFO] [stderr]   Downloaded sc-consensus-slots v0.8.1
[INFO] [stderr]   Downloaded pallet-transaction-payment-rpc v2.0.1
[INFO] [stderr]   Downloaded sc-proposer-metrics v0.8.1
[INFO] [stderr]   Downloaded sc-peerset v2.0.1
[INFO] [stderr]   Downloaded sc-offchain v2.0.1
[INFO] [stderr]   Downloaded sc-consensus-aura v0.8.1
[INFO] [stderr]   Downloaded frame-benchmarking-cli v2.0.1
[INFO] [stderr]   Downloaded pallet-contracts-rpc v0.8.1
[INFO] [stderr]   Downloaded sp-consensus-slots v0.8.1
[INFO] [stderr]   Downloaded build-helper v0.1.1
[INFO] [stderr]   Downloaded wasm-gc-api v0.1.11
[INFO] [stderr]   Downloaded chacha20 v0.5.0
[INFO] [stderr]   Downloaded soketto v0.4.2
[INFO] [stderr]   Downloaded sp-block-builder v2.0.1
[INFO] [stderr]   Downloaded sc-chain-spec-derive v2.0.1
[INFO] [stderr]   Downloaded pallet-sudo v2.0.1
[INFO] [stderr]   Downloaded sc-network-gossip v0.8.1
[INFO] [stderr]   Downloaded pallet-finality-tracker v2.0.1
[INFO] [stderr]   Downloaded sc-consensus v0.8.1
[INFO] [stderr]   Downloaded pallet-aura v2.0.1
[INFO] [stderr]   Downloaded jsonrpc-core-client v15.1.0
[INFO] [stderr]   Downloaded sc-client-api v2.0.1
[INFO] [stderr]   Downloaded sc-telemetry v2.0.1
[INFO] [stderr]   Downloaded jsonrpc-derive v15.1.0
[INFO] [stderr]   Downloaded sc-executor-common v0.8.1
[INFO] [stderr]   Downloaded sc-transaction-graph v2.0.1
[INFO] [stderr]   Downloaded sc-executor-wasmi v0.8.1
[INFO] [stderr]   Downloaded file-per-thread-logger v0.1.4
[INFO] [stderr]   Downloaded zstd v0.5.4+zstd.1.4.7
[INFO] [stderr]   Downloaded scroll_derive v0.10.4
[INFO] [stderr]   Downloaded rust-argon2 v0.8.3
[INFO] [stderr]   Downloaded sc-transaction-pool v2.0.1
[INFO] [stderr]   Downloaded raw-cpuid v7.0.4
[INFO] [stderr]   Downloaded sp-keyring v2.0.1
[INFO] [stderr]   Downloaded frame-system-rpc-runtime-api v2.0.1
[INFO] [stderr]   Downloaded arc-swap v1.2.0
[INFO] [stderr]   Downloaded slog v2.7.0
[INFO] [stderr]   Downloaded scroll v0.10.2
[INFO] [stderr]   Downloaded retain_mut v0.1.2
[INFO] [stderr]   Downloaded sp-serializer v2.0.1
[INFO] [stderr]   Downloaded aes-gcm v0.7.0
[INFO] [stderr]   Downloaded sha3 v0.9.1
[INFO] [stderr]   Downloaded async-std v1.8.0
[INFO] [stderr]   Downloaded aesni v0.8.0
[INFO] [stderr]   Downloaded sp-session v2.0.1
[INFO] [stderr]   Downloaded const-random-macro v0.1.13
[INFO] [stderr]   Downloaded sp-allocator v2.0.1
[INFO] [stderr]   Downloaded sp-finality-tracker v2.0.1
[INFO] [stderr]   Downloaded sc-service v0.8.1
[INFO] [stderr]   Downloaded sc-chain-spec v2.0.1
[INFO] [stderr]   Downloaded fs-swap v0.2.5
[INFO] [stderr]   Downloaded sc-finality-grandpa v0.8.1
[INFO] [stderr]   Downloaded sc-client-db v0.8.1
[INFO] [stderr]   Downloaded futures v0.3.11
[INFO] [stderr]   Downloaded frame-executive v2.0.1
[INFO] [stderr]   Downloaded sp-version v2.0.1
[INFO] [stderr]   Downloaded frame-support-procedural-tools-derive v2.0.1
[INFO] [stderr]   Downloaded sp-api v2.0.1
[INFO] [stderr]   Downloaded frame-support v2.0.1
[INFO] [stderr]   Downloaded futures-util v0.3.11
[INFO] [stderr]   Downloaded matrixmultiply v0.2.4
[INFO] [stderr]   Downloaded cpuid-bool v0.2.0
[INFO] [stderr]   Downloaded sp-staking v2.0.1
[INFO] [stderr]   Downloaded aes v0.5.0
[INFO] [stderr]   Downloaded pin-project v1.0.4
[INFO] [stderr]   Downloaded jsonrpc-server-utils v15.1.0
[INFO] [stderr]   Downloaded sp-consensus v0.8.1
[INFO] [stderr]   Downloaded signal-hook v0.1.17
[INFO] [stderr]   Downloaded sp-storage v2.0.1
[INFO] [stderr]   Downloaded ghash v0.3.1
[INFO] [stderr]   Downloaded libz-sys v1.1.2
[INFO] [stderr]   Downloaded zstd-sys v1.4.18+zstd.1.4.7
[INFO] [stderr]   Downloaded futures-io v0.3.11
[INFO] [stderr]   Downloaded tokio-rustls v0.14.1
[INFO] [stderr]   Downloaded sp-debug-derive v2.0.1
[INFO] [stderr]   Downloaded snow v0.7.2
[INFO] [stderr]   Downloaded substrate-wasm-builder v3.0.0
[INFO] [stderr]   Downloaded environmental v1.1.2
[INFO] [stderr]   Downloaded pallet-transaction-payment-rpc-runtime-api v2.0.1
[INFO] [stderr]   Downloaded libp2p-pnet v0.19.2
[INFO] [stderr]   Downloaded sp-io v2.0.1
[INFO] [stderr]   Downloaded sp-trie v2.0.1
[INFO] [stderr]   Downloaded parity-scale-codec-derive v1.2.2
[INFO] [stderr]   Downloaded sp-blockchain v2.0.1
[INFO] [stderr]   Downloaded poly1305 v0.6.2
[INFO] [stderr]   Downloaded aes-soft v0.5.0
[INFO] [stderr]   Downloaded frame-support-procedural-tools v2.0.1
[INFO] [stderr]   Downloaded sp-core v2.0.1
[INFO] [stderr]   Downloaded serde v1.0.119
[INFO] [stderr]   Downloaded sc-light v2.0.1
[INFO] [stderr]   Downloaded sc-informant v0.8.1
[INFO] [stderr]   Downloaded fork-tree v2.0.1
[INFO] [stderr]   Downloaded sc-state-db v0.8.1
[INFO] [stderr]   Downloaded sp-rpc v2.0.1
[INFO] [stderr]   Downloaded pallet-grandpa v2.0.1
[INFO] [stderr]   Downloaded pallet-timestamp v2.0.1
[INFO] [stderr]   Downloaded chacha20poly1305 v0.6.0
[INFO] [stderr]   Downloaded blake2 v0.9.1
[INFO] [stderr]   Downloaded curve25519-dalek v3.0.2
[INFO] [stderr]   Downloaded substrate-frame-rpc-system v2.0.1
[INFO] [stderr]   Downloaded alt_serde v1.0.119
[INFO] [stderr]   Downloaded jsonrpc-core v15.1.0
[INFO] [stderr]   Downloaded jsonrpc-client-transports v15.1.0
[INFO] [stderr]   Downloaded jsonrpc-pubsub v15.1.0
[INFO] [stderr]   Downloaded zstd-safe v2.0.6+zstd.1.4.7
[INFO] [stderr]   Downloaded const-random v0.1.13
[INFO] [stderr]   Downloaded wat v1.0.32
[INFO] [stderr] warning: spurious network error (2 tries remaining): [55] Failed sending data to the peer (Connection died, tried 5 times before giving up)
[INFO] [stderr]   Downloaded wast v31.0.0
[INFO] [stderr]   Downloaded sc-executor v0.8.1
[INFO] [stderr]   Downloaded sc-rpc-api v0.8.1
[INFO] [stderr]   Downloaded pallet-contracts v2.0.1
[INFO] [stderr]   Downloaded log v0.4.13
[INFO] [stderr]   Downloaded sp-chain-spec v2.0.1
[INFO] [stderr]   Downloaded sp-finality-grandpa v2.0.1
[INFO] [stderr]   Downloaded pallet-balances v2.0.1
[INFO] [stderr]   Downloaded pallet-contracts-primitives v2.0.1
[INFO] [stderr]   Downloaded parity-multiaddr v0.9.7
[INFO] [stderr]   Downloaded sp-sandbox v0.8.1
[INFO] [stderr]   Downloaded ahash v0.2.19
[INFO] [stderr]   Downloaded stream-cipher v0.7.1
[INFO] [stderr]   Downloaded block-cipher v0.8.0
[INFO] [stderr]   Downloaded slog-scope v4.4.0
[INFO] [stderr]   Downloaded frame-system-benchmarking v2.0.1
[INFO] [stderr]   Downloaded pallet-contracts-rpc-runtime-api v0.8.1
[INFO] [stderr]   Downloaded sp-authorship v2.0.1
[INFO] [stderr]   Downloaded pallet-session v2.0.1
[INFO] [stderr]   Downloaded pallet-authorship v2.0.1
[INFO] [stderr]   Downloaded sp-timestamp v2.0.1
[INFO] [stderr]   Downloaded sp-runtime-interface v2.0.1
[INFO] [stderr]   Downloaded merlin v2.0.1
[INFO] [stderr]   Downloaded zeroize_derive v1.0.1
[INFO] [stderr]   Downloaded pallet-transaction-payment v2.0.1
[INFO] [stderr]   Downloaded sp-offchain v2.0.1
[INFO] [stderr]   Downloaded sp-consensus-aura v0.8.1
[INFO] [stderr]   Downloaded lru v0.6.3
[INFO] [stderr]   Downloaded multistream-select v0.8.5
[INFO] [stderr]   Downloaded alt_serde_json v1.0.61
[INFO] [stderr]   Downloaded sp-application-crypto v2.0.1
[INFO] [stderr]   Downloaded sp-externalities v0.8.1
[INFO] [stderr]   Downloaded sp-tracing v2.0.1
[INFO] [stderr]   Downloaded sp-std v2.0.1
[INFO] [stderr]   Downloaded salsa20 v0.6.0
[INFO] [stderr]   Downloaded serde_derive v1.0.119
[INFO] [stderr]   Downloaded ref-cast-impl v1.0.6
[INFO] [stderr]   Downloaded ref-cast v1.0.6
[INFO] [stderr]   Downloaded parity-scale-codec v1.3.6
[INFO] [stderr]   Downloaded x25519-dalek v1.1.0
[INFO] [stderr]   Downloaded blake2s_simd v0.5.11
[INFO] [stderr]   Downloaded thread_local v1.1.0
[INFO] [stderr]   Downloaded curve25519-dalek v2.1.2
[INFO] [stderr]   Downloaded trie-db v0.22.2
[INFO] [stderr]   Downloaded sp-runtime-interface-proc-macro v2.0.1
[INFO] [stderr]   Downloaded sp-wasm-interface v2.0.1
[INFO] [stderr]   Downloaded syn v1.0.58
[INFO] [stderr]   Downloaded sp-runtime v2.0.1
[INFO] [stderr]   Downloaded rand v0.8.2
[INFO] [stderr]   Downloaded bs58 v0.4.0
[INFO] [stderr]   Downloaded async-io v1.3.1
[INFO] [stderr]   Downloaded parity-wasm v0.32.0
[INFO] [stderr]   Downloaded sc-executor-wasmtime v0.8.1
[INFO] [stderr]   Downloaded multimap v0.8.2
[INFO] [stderr]   Downloaded pin-project-internal v1.0.4
[INFO] [stderr]   Downloaded wasm-timer v0.2.5
[INFO] [stderr]   Downloaded nb-connect v1.0.2
[INFO] [stderr]   Downloaded ed25519-dalek v1.0.1
[INFO] [stderr]   Downloaded dyn-clone v1.0.4
[INFO] [stderr]   Downloaded signature v1.3.0
[INFO] [stderr]   Downloaded ed25519 v1.0.3
[INFO] [stderr]   Downloaded polyval v0.4.5
[INFO] [stderr]   Downloaded data-encoding v2.3.1
[INFO] [stderr]   Downloaded multihash v0.11.4
[INFO] [stderr]   Downloaded sp-utils v2.0.1
[INFO] [stderr]   Downloaded async-global-executor v1.4.3
[INFO] [stderr]   Downloaded sp-transaction-pool v2.0.1
[INFO] [stderr]   Downloaded sc-basic-authorship v0.8.1
[INFO] [stderr]   Downloaded sc-cli v0.8.1
[INFO] [stderr]   Downloaded sc-network v0.8.1
[INFO] [stderr]   Downloaded polling v2.0.2
[INFO] [stderr]   Downloaded async-process v1.0.1
[INFO] [stderr]   Downloaded substrate-prometheus-endpoint v0.8.1
[INFO] [stderr]   Downloaded sp-database v2.0.1
[INFO] [stderr]   Downloaded cargo_metadata v0.12.2
[INFO] [stderr]   Downloaded alt_serde_derive v1.0.119
[INFO] [stderr]   Downloaded sp-api-proc-macro v2.0.1
[INFO] [stderr]   Downloaded substrate-build-script-utils v2.0.1
[INFO] [stderr]   Downloaded pallet-randomness-collective-flip v2.0.1
[INFO] [stderr]   Downloaded frame-benchmarking v2.0.1
[INFO] [stderr]   Downloaded sp-inherents v2.0.1
[INFO] [stderr]   Downloaded sc-rpc v2.0.1
[INFO] [stderr]   Downloaded frame-support-procedural v2.0.1
[INFO] [stderr]   Downloaded sp-arithmetic v2.0.1
[INFO] [stderr]   Downloaded jsonrpc-http-server v15.1.0
[INFO] [stderr]   Downloaded jsonrpc-ipc-server v15.1.0
[INFO] [stderr]   Downloaded sc-tracing v2.0.1
[INFO] [stderr]   Downloaded frame-metadata v12.0.1
[INFO] [stderr]   Downloaded sp-state-machine v0.8.1
[INFO] [stderr]   Downloaded frame-system v2.0.1
[INFO] [stderr]   Downloaded integer-sqrt v0.1.5
[INFO] [stderr]   Downloaded sp-panic-handler v2.0.1
[INFO] [stderr]   Downloaded futures-macro v0.3.11
[INFO] [stderr]   Downloaded futures-sink v0.3.11
[INFO] [stderr]   Downloaded hashbrown v0.8.2
[INFO] [stderr]   Downloaded uint v0.8.5
[INFO] [stderr]   Downloaded primitive-types v0.7.3
[INFO] [stderr]   Downloaded futures-core v0.3.11
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", 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] 8c066fe63a4d8db526112216c5a42829fa4af6f465b0d77b54d2b55339772b80
[INFO] running `Command { std: "docker" "start" "-a" "8c066fe63a4d8db526112216c5a42829fa4af6f465b0d77b54d2b55339772b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c066fe63a4d8db526112216c5a42829fa4af6f465b0d77b54d2b55339772b80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c066fe63a4d8db526112216c5a42829fa4af6f465b0d77b54d2b55339772b80", kill_on_drop: false }`
[INFO] [stdout] 8c066fe63a4d8db526112216c5a42829fa4af6f465b0d77b54d2b55339772b80
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79dd87c6ff1255face38587bc6105eb7129ae0e510a392ac4719a3dfcc064d7e
[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" "79dd87c6ff1255face38587bc6105eb7129ae0e510a392ac4719a3dfcc064d7e", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] no edition found in manifest, probably 2015, skipping
[INFO] running `Command { std: "docker" "inspect" "79dd87c6ff1255face38587bc6105eb7129ae0e510a392ac4719a3dfcc064d7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79dd87c6ff1255face38587bc6105eb7129ae0e510a392ac4719a3dfcc064d7e", kill_on_drop: false }`
[INFO] [stdout] 79dd87c6ff1255face38587bc6105eb7129ae0e510a392ac4719a3dfcc064d7e