[INFO] cloning repository https://github.com/emrivero/rust_grokking_algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emrivero/rust_grokking_algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femrivero%2Frust_grokking_algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femrivero%2Frust_grokking_algorithms'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/pre-rebase.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femrivero%2Frust_grokking_algorithms/hooks/pre-rebase.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/emrivero/rust_grokking_algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emrivero/rust_grokking_algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femrivero%2Frust_grokking_algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femrivero%2Frust_grokking_algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d626c69e95bb41a3bd371e489e56805da739297e
[INFO] checking emrivero/rust_grokking_algorithms against master#3350c1eb3fd8fe1bee1ed4c76944d707bd256876 for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femrivero%2Frust_grokking_algorithms" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emrivero/rust_grokking_algorithms on toolchain 3350c1eb3fd8fe1bee1ed4c76944d707bd256876
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emrivero/rust_grokking_algorithms
[INFO] finished tweaking git repo https://github.com/emrivero/rust_grokking_algorithms
[INFO] tweaked toml for git repo https://github.com/emrivero/rust_grokking_algorithms written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/emrivero/rust_grokking_algorithms 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" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4bdd2449f020f54566dbd355c2243a0ddc86493ce3104b498ab25ebe9975722
[INFO] running `Command { std: "docker" "start" "-a" "e4bdd2449f020f54566dbd355c2243a0ddc86493ce3104b498ab25ebe9975722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4bdd2449f020f54566dbd355c2243a0ddc86493ce3104b498ab25ebe9975722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4bdd2449f020f54566dbd355c2243a0ddc86493ce3104b498ab25ebe9975722", kill_on_drop: false }`
[INFO] [stdout] e4bdd2449f020f54566dbd355c2243a0ddc86493ce3104b498ab25ebe9975722
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e7419993e382ed51ec83ce3c25959aa64a070a9b4baf0ece78047e8c7ccd435
[INFO] running `Command { std: "docker" "start" "-a" "5e7419993e382ed51ec83ce3c25959aa64a070a9b4baf0ece78047e8c7ccd435", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking grokking_algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]  --> src/graph/dijkstra.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     graph: &HashMap<String, Vec<String>>,
[INFO] [stdout]   |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]  --> src/graph/dijkstra.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     node: &String,
[INFO] [stdout]   |     ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `finish_node`
[INFO] [stdout]  --> src/graph/dijkstra.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     finish_node: &String,
[INFO] [stdout]   |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_finish_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visited_param`
[INFO] [stdout]  --> src/graph/dijkstra.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     visited_param: Option<&Vec<&String>>, /* = "!" */
[INFO] [stdout]   |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visited_param`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `graph`
[INFO] [stdout]  --> src/graph/dijkstra.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     graph: &HashMap<String, Vec<String>>,
[INFO] [stdout]   |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]  --> src/graph/dijkstra.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     node: &String,
[INFO] [stdout]   |     ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `finish_node`
[INFO] [stdout]  --> src/graph/dijkstra.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     finish_node: &String,
[INFO] [stdout]   |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_finish_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visited_param`
[INFO] [stdout]  --> src/graph/dijkstra.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     visited_param: Option<&Vec<&String>>, /* = "!" */
[INFO] [stdout]   |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visited_param`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.07s
[INFO] running `Command { std: "docker" "inspect" "5e7419993e382ed51ec83ce3c25959aa64a070a9b4baf0ece78047e8c7ccd435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e7419993e382ed51ec83ce3c25959aa64a070a9b4baf0ece78047e8c7ccd435", kill_on_drop: false }`
[INFO] [stdout] 5e7419993e382ed51ec83ce3c25959aa64a070a9b4baf0ece78047e8c7ccd435