[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#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOffBlockway%2FOffBlockwayMiningClient" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:   4% (216/5118)
Updating files:   5% (256/5118)
Updating files:   6% (308/5118)
Updating files:   7% (359/5118)
Updating files:   8% (410/5118)
Updating files:   9% (461/5118)
Updating files:  10% (512/5118)
Updating files:  11% (563/5118)
Updating files:  12% (615/5118)
Updating files:  13% (666/5118)
Updating files:  14% (717/5118)
Updating files:  15% (768/5118)
Updating files:  16% (819/5118)
Updating files:  17% (871/5118)
Updating files:  18% (922/5118)
Updating files:  19% (973/5118)
Updating files:  20% (1024/5118)
Updating files:  21% (1075/5118)
Updating files:  22% (1126/5118)
Updating files:  23% (1178/5118)
Updating files:  24% (1229/5118)
Updating files:  25% (1280/5118)
Updating files:  26% (1331/5118)
Updating files:  27% (1382/5118)
Updating files:  28% (1434/5118)
Updating files:  29% (1485/5118)
Updating files:  30% (1536/5118)
Updating files:  31% (1587/5118)
Updating files:  32% (1638/5118)
Updating files:  33% (1689/5118)
Updating files:  34% (1741/5118)
Updating files:  34% (1762/5118)
Updating files:  35% (1792/5118)
Updating files:  36% (1843/5118)
Updating files:  37% (1894/5118)
Updating files:  38% (1945/5118)
Updating files:  39% (1997/5118)
Updating files:  40% (2048/5118)
Updating files:  41% (2099/5118)
Updating files:  42% (2150/5118)
Updating files:  43% (2201/5118)
Updating files:  44% (2252/5118)
Updating files:  45% (2304/5118)
Updating files:  46% (2355/5118)
Updating files:  47% (2406/5118)
Updating files:  48% (2457/5118)
Updating files:  49% (2508/5118)
Updating files:  50% (2559/5118)
Updating files:  51% (2611/5118)
Updating files:  52% (2662/5118)
Updating files:  53% (2713/5118)
Updating files:  54% (2764/5118)
Updating files:  55% (2815/5118)
Updating files:  56% (2867/5118)
Updating files:  57% (2918/5118)
Updating files:  58% (2969/5118)
Updating files:  59% (3020/5118)
Updating files:  60% (3071/5118)
Updating files:  61% (3122/5118)
Updating files:  62% (3174/5118)
Updating files:  63% (3225/5118)
Updating files:  64% (3276/5118)
Updating files:  65% (3327/5118)
Updating files:  66% (3378/5118)
Updating files:  67% (3430/5118)
Updating files:  68% (3481/5118)
Updating files:  69% (3532/5118)
Updating files:  70% (3583/5118)
Updating files:  71% (3634/5118)
Updating files:  72% (3685/5118)
Updating files:  73% (3737/5118)
Updating files:  74% (3788/5118)
Updating files:  75% (3839/5118)
Updating files:  76% (3890/5118)
Updating files:  77% (3941/5118)
Updating files:  78% (3993/5118)
Updating files:  79% (4044/5118)
Updating files:  80% (4095/5118)
Updating files:  81% (4146/5118)
Updating files:  82% (4197/5118)
Updating files:  83% (4248/5118)
Updating files:  84% (4300/5118)
Updating files:  85% (4351/5118)
Updating files:  86% (4402/5118)
Updating files:  87% (4453/5118)
Updating files:  88% (4504/5118)
Updating files:  89% (4556/5118)
Updating files:  90% (4607/5118)
Updating files:  91% (4658/5118)
Updating files:  92% (4709/5118)
Updating files:  93% (4760/5118)
Updating files:  94% (4811/5118)
Updating files:  95% (4863/5118)
Updating files:  96% (4914/5118)
Updating files:  97% (4965/5118)
Updating files:  98% (5016/5118)
Updating files:  99% (5067/5118)
Updating files: 100% (5118/5118)
Updating files: 100% (5118/5118), done.
[INFO] validating manifest of git repo https://github.com/OffBlockway/OffBlockwayMiningClient on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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-64/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28d25e4b6f55621022e1f139e01eb1157b44b80e8091ccd6e1ecb99770614452
[INFO] running `Command { std: "docker" "start" "-a" "28d25e4b6f55621022e1f139e01eb1157b44b80e8091ccd6e1ecb99770614452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28d25e4b6f55621022e1f139e01eb1157b44b80e8091ccd6e1ecb99770614452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28d25e4b6f55621022e1f139e01eb1157b44b80e8091ccd6e1ecb99770614452", kill_on_drop: false }`
[INFO] [stdout] 28d25e4b6f55621022e1f139e01eb1157b44b80e8091ccd6e1ecb99770614452
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4616695f580d508b20addb88ffa6ef8725a19ee002b312e86d43b6d53922546a
[INFO] running `Command { std: "docker" "start" "-a" "4616695f580d508b20addb88ffa6ef8725a19ee002b312e86d43b6d53922546a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.9.0
[INFO] [stderr]     Checking serde v1.0.24
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[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 digest v0.6.2
[INFO] [stderr]     Checking block-buffer v0.2.0
[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 2m 47s
[INFO] running `Command { std: "docker" "inspect" "4616695f580d508b20addb88ffa6ef8725a19ee002b312e86d43b6d53922546a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4616695f580d508b20addb88ffa6ef8725a19ee002b312e86d43b6d53922546a", kill_on_drop: false }`
[INFO] [stdout] 4616695f580d508b20addb88ffa6ef8725a19ee002b312e86d43b6d53922546a