[INFO] cloning repository https://github.com/424C/crabchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/424C/crabchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F424C%2Fcrabchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F424C%2Fcrabchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d82d2e73adec29c73faa5420dd7ca6d26d977301
[INFO] building 424C/crabchain against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F424C%2Fcrabchain" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/424C/crabchain on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/424C/crabchain
[INFO] finished tweaking git repo https://github.com/424C/crabchain
[INFO] tweaked toml for git repo https://github.com/424C/crabchain written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/424C/crabchain 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.155
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a5e8cb1fe17ef17b33c96a0681cc75a1c4abd3c1352ec7b46794344592b50c9
[INFO] running `Command { std: "docker" "start" "-a" "6a5e8cb1fe17ef17b33c96a0681cc75a1c4abd3c1352ec7b46794344592b50c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a5e8cb1fe17ef17b33c96a0681cc75a1c4abd3c1352ec7b46794344592b50c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a5e8cb1fe17ef17b33c96a0681cc75a1c4abd3c1352ec7b46794344592b50c9", kill_on_drop: false }`
[INFO] [stdout] 6a5e8cb1fe17ef17b33c96a0681cc75a1c4abd3c1352ec7b46794344592b50c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a9bbc8480262de4b2b4d8759b8c1e095e6cf1785eccca9f2966b3b7d15fb875
[INFO] running `Command { std: "docker" "start" "-a" "2a9bbc8480262de4b2b4d8759b8c1e095e6cf1785eccca9f2966b3b7d15fb875", kill_on_drop: false }`
[INFO] [stderr]    Compiling cpufeatures v0.2.12
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling crabchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `block::Block`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use block::Block;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut difficulty = 5;
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `calculate_hash` are never used
[INFO] [stdout]   --> src/block.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Block {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout] 10 |     pub fn new(index: u32, timestamp: u64, data: String, previous_hash: String) -> Block {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn calculate_hash(index: u32, timestamp: u64, data: &str, previous_hash: &str) -> String {
[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 0.81s
[INFO] running `Command { std: "docker" "inspect" "2a9bbc8480262de4b2b4d8759b8c1e095e6cf1785eccca9f2966b3b7d15fb875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a9bbc8480262de4b2b4d8759b8c1e095e6cf1785eccca9f2966b3b7d15fb875", kill_on_drop: false }`
[INFO] [stdout] 2a9bbc8480262de4b2b4d8759b8c1e095e6cf1785eccca9f2966b3b7d15fb875
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a58ce3af440339b20bb7cbeed2a6ddbb1ab1f76b92ca69c884aa692cc91b82d1
[INFO] running `Command { std: "docker" "start" "-a" "a58ce3af440339b20bb7cbeed2a6ddbb1ab1f76b92ca69c884aa692cc91b82d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling crabchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `block::Block`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use block::Block;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut difficulty = 5;
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `calculate_hash` are never used
[INFO] [stdout]   --> src/block.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Block {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout] 10 |     pub fn new(index: u32, timestamp: u64, data: String, previous_hash: String) -> Block {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn calculate_hash(index: u32, timestamp: u64, data: &str, previous_hash: &str) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "a58ce3af440339b20bb7cbeed2a6ddbb1ab1f76b92ca69c884aa692cc91b82d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a58ce3af440339b20bb7cbeed2a6ddbb1ab1f76b92ca69c884aa692cc91b82d1", kill_on_drop: false }`
[INFO] [stdout] a58ce3af440339b20bb7cbeed2a6ddbb1ab1f76b92ca69c884aa692cc91b82d1
