[INFO] cloning repository https://github.com/mohitkr827/rustyblocc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mohitkr827/rustyblocc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohitkr827%2Frustyblocc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohitkr827%2Frustyblocc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de5ed2eda332270bff1d3ed6ac8836eeb7f4841b
[INFO] checking mohitkr827/rustyblocc against try#2b43d8e161cfe46fae25518efb124c3c1d0fa392 for pr-145604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohitkr827%2Frustyblocc" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mohitkr827/rustyblocc
[INFO] finished tweaking git repo https://github.com/mohitkr827/rustyblocc
[INFO] tweaked toml for git repo https://github.com/mohitkr827/rustyblocc written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mohitkr827/rustyblocc on toolchain 2b43d8e161cfe46fae25518efb124c3c1d0fa392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b43d8e161cfe46fae25518efb124c3c1d0fa392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mohitkr827/rustyblocc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2b43d8e161cfe46fae25518efb124c3c1d0fa392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.214
[INFO] [stderr]   Downloaded serde v1.0.214
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+2b43d8e161cfe46fae25518efb124c3c1d0fa392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37aefe28ebcad584fd100987a2bd6f7156d40181270e4b08a49bb7cada477d54
[INFO] running `Command { std: "docker" "start" "-a" "37aefe28ebcad584fd100987a2bd6f7156d40181270e4b08a49bb7cada477d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37aefe28ebcad584fd100987a2bd6f7156d40181270e4b08a49bb7cada477d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37aefe28ebcad584fd100987a2bd6f7156d40181270e4b08a49bb7cada477d54", kill_on_drop: false }`
[INFO] [stdout] 37aefe28ebcad584fd100987a2bd6f7156d40181270e4b08a49bb7cada477d54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+2b43d8e161cfe46fae25518efb124c3c1d0fa392" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11d95fabdeeecffacd01081f58e3e4088b6cce2bec758cb68404acce8922e264
[INFO] running `Command { std: "docker" "start" "-a" "11d95fabdeeecffacd01081f58e3e4088b6cce2bec758cb68404acce8922e264", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling serde v1.0.214
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]     Checking cpufeatures v0.2.14
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]    Compiling serde_derive v1.0.214
[INFO] [stderr]     Checking rustyblocc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `difficulty` is never read
[INFO] [stdout]  --> src/blockchain/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Blockchain {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 5 |     pub chain: Vec<Block>,
[INFO] [stdout] 6 |     pub difficulty: usize,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `difficulty` is never read
[INFO] [stdout]  --> src/blockchain/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Blockchain {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 5 |     pub chain: Vec<Block>,
[INFO] [stdout] 6 |     pub difficulty: usize,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.96s
[INFO] running `Command { std: "docker" "inspect" "11d95fabdeeecffacd01081f58e3e4088b6cce2bec758cb68404acce8922e264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11d95fabdeeecffacd01081f58e3e4088b6cce2bec758cb68404acce8922e264", kill_on_drop: false }`
[INFO] [stdout] 11d95fabdeeecffacd01081f58e3e4088b6cce2bec758cb68404acce8922e264