[INFO] cloning repository https://github.com/techking007/Rust-blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/techking007/Rust-blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftechking007%2FRust-blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftechking007%2FRust-blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed50d3cab743680d763bd0d1e9e9df10b224b0f2
[INFO] checking techking007/Rust-blockchain against master#30840c53f414b753cb08f14620906572f88dda4b for pr-123531
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftechking007%2FRust-blockchain" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/techking007/Rust-blockchain on toolchain 30840c53f414b753cb08f14620906572f88dda4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30840c53f414b753cb08f14620906572f88dda4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/techking007/Rust-blockchain
[INFO] finished tweaking git repo https://github.com/techking007/Rust-blockchain
[INFO] tweaked toml for git repo https://github.com/techking007/Rust-blockchain written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/techking007/Rust-blockchain 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" "+30840c53f414b753cb08f14620906572f88dda4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking techking007/Rust-blockchain against try#18fb860b8a8e7ca508746882328061d0fe352543 for pr-123531
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftechking007%2FRust-blockchain" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/techking007/Rust-blockchain on toolchain 18fb860b8a8e7ca508746882328061d0fe352543
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/techking007/Rust-blockchain
[INFO] finished tweaking git repo https://github.com/techking007/Rust-blockchain
[INFO] tweaked toml for git repo https://github.com/techking007/Rust-blockchain written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/techking007/Rust-blockchain 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" "+18fb860b8a8e7ca508746882328061d0fe352543" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46dd934307542c5c5963ad0229f99023cb738ba79686d96a9748ee073497d52d
[INFO] running `Command { std: "docker" "start" "-a" "46dd934307542c5c5963ad0229f99023cb738ba79686d96a9748ee073497d52d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46dd934307542c5c5963ad0229f99023cb738ba79686d96a9748ee073497d52d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46dd934307542c5c5963ad0229f99023cb738ba79686d96a9748ee073497d52d", kill_on_drop: false }`
[INFO] [stdout] 46dd934307542c5c5963ad0229f99023cb738ba79686d96a9748ee073497d52d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+18fb860b8a8e7ca508746882328061d0fe352543" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26fb9b29729d34a1289578276c9ec3ba5de2b21ffd700dae8551bd0f2a119da0
[INFO] running `Command { std: "docker" "start" "-a" "26fb9b29729d34a1289578276c9ec3ba5de2b21ffd700dae8551bd0f2a119da0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling serde_json v1.0.97
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking cpufeatures v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking chrono v0.4.26
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]     Checking blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `genesis_block` is never read
[INFO] [stdout]   --> src/block_models/blockchain.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Blockchain {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 9  |     // The first block to be added to the chain.
[INFO] [stdout] 10 |     pub genesis_block: Block,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Blockchain` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `genesis_block` is never read
[INFO] [stdout]   --> src/block_models/blockchain.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Blockchain {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 9  |     // The first block to be added to the chain.
[INFO] [stdout] 10 |     pub genesis_block: Block,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Blockchain` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.81s
[INFO] running `Command { std: "docker" "inspect" "26fb9b29729d34a1289578276c9ec3ba5de2b21ffd700dae8551bd0f2a119da0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26fb9b29729d34a1289578276c9ec3ba5de2b21ffd700dae8551bd0f2a119da0", kill_on_drop: false }`
[INFO] [stdout] 26fb9b29729d34a1289578276c9ec3ba5de2b21ffd700dae8551bd0f2a119da0