[INFO] cloning repository https://github.com/bui-duc-huy/basic_blockchain_in_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bui-duc-huy/basic_blockchain_in_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbui-duc-huy%2Fbasic_blockchain_in_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbui-duc-huy%2Fbasic_blockchain_in_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3f71bfdc2fc473435b6f2f04f237b7cd59d29b49
[INFO] checking bui-duc-huy/basic_blockchain_in_rust against master#e652caa679a304af11fc04f1f12452f255a82593 for pr-98000
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbui-duc-huy%2Fbasic_blockchain_in_rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bui-duc-huy/basic_blockchain_in_rust on toolchain e652caa679a304af11fc04f1f12452f255a82593
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bui-duc-huy/basic_blockchain_in_rust
[INFO] finished tweaking git repo https://github.com/bui-duc-huy/basic_blockchain_in_rust
[INFO] tweaked toml for git repo https://github.com/bui-duc-huy/basic_blockchain_in_rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/bui-duc-huy/basic_blockchain_in_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded keccak-hash v0.7.0
[INFO] [stderr]   Downloaded parity-secp256k1 v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c28fe9812ee0e5301a2ed7baa1ed966ef9af7bcd1bc3a694e6493374042582e
[INFO] running `Command { std: "docker" "start" "-a" "9c28fe9812ee0e5301a2ed7baa1ed966ef9af7bcd1bc3a694e6493374042582e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c28fe9812ee0e5301a2ed7baa1ed966ef9af7bcd1bc3a694e6493374042582e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c28fe9812ee0e5301a2ed7baa1ed966ef9af7bcd1bc3a694e6493374042582e", kill_on_drop: false }`
[INFO] [stdout] 9c28fe9812ee0e5301a2ed7baa1ed966ef9af7bcd1bc3a694e6493374042582e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+e652caa679a304af11fc04f1f12452f255a82593" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16e5d3a2c2d177480bc0eaddd67145071e326777b0bb84ce38ab4751c7976f61
[INFO] running `Command { std: "docker" "start" "-a" "16e5d3a2c2d177480bc0eaddd67145071e326777b0bb84ce38ab4751c7976f61", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking byte-slice-cast v1.2.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]     Checking rlp v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking bitvec v0.20.4
[INFO] [stderr]     Checking impl-rlp v0.3.0
[INFO] [stderr]     Checking uint v0.9.1
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling parity-secp256k1 v0.7.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking fixed-hash v0.7.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.1
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.3.1
[INFO] [stderr]     Checking impl-serde v0.3.2
[INFO] [stderr]     Checking parity-scale-codec v2.3.1
[INFO] [stderr]     Checking ethbloom v0.11.1
[INFO] [stderr]     Checking impl-codec v0.5.1
[INFO] [stderr]     Checking primitive-types v0.9.1
[INFO] [stderr]     Checking keccak-hash v0.7.0
[INFO] [stderr]     Checking ethereum-types v0.11.0
[INFO] [stderr]     Checking core v0.0.1 (/opt/rustwide/workdir/crates/core)
[INFO] [stderr]     Checking basic_blockchain_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Block`
[INFO] [stdout]  --> src/blockchain/main.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 |     block::{ BlockHeader, Block }
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Block`
[INFO] [stdout]  --> src/blockchain/main.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 |     block::{ BlockHeader, Block }
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.29s
[INFO] running `Command { std: "docker" "inspect" "16e5d3a2c2d177480bc0eaddd67145071e326777b0bb84ce38ab4751c7976f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e5d3a2c2d177480bc0eaddd67145071e326777b0bb84ce38ab4751c7976f61", kill_on_drop: false }`
[INFO] [stdout] 16e5d3a2c2d177480bc0eaddd67145071e326777b0bb84ce38ab4751c7976f61