[INFO] cloning repository https://github.com/OffBlockway/OffBlockwayMiningClient
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OffBlockway/OffBlockwayMiningClient" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOffBlockway%2FOffBlockwayMiningClient", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOffBlockway%2FOffBlockwayMiningClient'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6fc1cfb70b1656b364916575b4405331ae0f6a8f
[INFO] checking OffBlockway/OffBlockwayMiningClient against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOffBlockway%2FOffBlockwayMiningClient" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OffBlockway/OffBlockwayMiningClient on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OffBlockway/OffBlockwayMiningClient
[INFO] finished tweaking git repo https://github.com/OffBlockway/OffBlockwayMiningClient
[INFO] tweaked toml for git repo https://github.com/OffBlockway/OffBlockwayMiningClient written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/OffBlockway/OffBlockwayMiningClient already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "fetch" "--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" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64771b1f1f6031d02740f6ff172c5ef2a5d7c0a0d72faa8d100ad17b56edc40b
[INFO] running `Command { std: "docker" "start" "-a" "64771b1f1f6031d02740f6ff172c5ef2a5d7c0a0d72faa8d100ad17b56edc40b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64771b1f1f6031d02740f6ff172c5ef2a5d7c0a0d72faa8d100ad17b56edc40b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64771b1f1f6031d02740f6ff172c5ef2a5d7c0a0d72faa8d100ad17b56edc40b", kill_on_drop: false }`
[INFO] [stdout] 64771b1f1f6031d02740f6ff172c5ef2a5d7c0a0d72faa8d100ad17b56edc40b
[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" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc2e8cd48a3e73ac0da1c66dfe55bfdfccc00538f2af14694e0dfb8af1a9a32d
[INFO] running `Command { std: "docker" "start" "-a" "cc2e8cd48a3e73ac0da1c66dfe55bfdfccc00538f2af14694e0dfb8af1a9a32d", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.9.0
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking serde v1.0.24
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]     Checking generic-array v0.8.3
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking block-buffer v0.2.0
[INFO] [stderr]     Checking digest v0.6.2
[INFO] [stderr]     Checking sha3 v0.6.0
[INFO] [stderr]     Checking serde_json v1.0.8
[INFO] [stderr]     Checking off_blockway v0.0.8
[INFO] [stderr]     Checking mining_client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         file.read_to_string( &mut buffer );
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         file.read_to_string( &mut buffer );
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.74s
[INFO] running `Command { std: "docker" "inspect" "cc2e8cd48a3e73ac0da1c66dfe55bfdfccc00538f2af14694e0dfb8af1a9a32d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc2e8cd48a3e73ac0da1c66dfe55bfdfccc00538f2af14694e0dfb8af1a9a32d", kill_on_drop: false }`
[INFO] [stdout] cc2e8cd48a3e73ac0da1c66dfe55bfdfccc00538f2af14694e0dfb8af1a9a32d