[INFO] cloning repository https://github.com/welaine123/DS210Project
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/welaine123/DS210Project" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwelaine123%2FDS210Project", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwelaine123%2FDS210Project'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5dfe7651cb7d92789367befaf946e5dc86e2c604
[INFO] checking welaine123/DS210Project against master#9d28fe39763974a96d61232e96ac856735e4cdd6 for pr-139624
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwelaine123%2FDS210Project" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/welaine123/DS210Project on toolchain 9d28fe39763974a96d61232e96ac856735e4cdd6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/welaine123/DS210Project
[INFO] finished tweaking git repo https://github.com/welaine123/DS210Project
[INFO] tweaked toml for git repo https://github.com/welaine123/DS210Project written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/welaine123/DS210Project 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" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c34a9c925280801906f045ed407d5b94cd8d0fa496dd3fd2535e3d26ddccc29f
[INFO] running `Command { std: "docker" "start" "-a" "c34a9c925280801906f045ed407d5b94cd8d0fa496dd3fd2535e3d26ddccc29f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c34a9c925280801906f045ed407d5b94cd8d0fa496dd3fd2535e3d26ddccc29f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c34a9c925280801906f045ed407d5b94cd8d0fa496dd3fd2535e3d26ddccc29f", kill_on_drop: false }`
[INFO] [stdout] c34a9c925280801906f045ed407d5b94cd8d0fa496dd3fd2535e3d26ddccc29f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82d9416a825beb71f0a271173cc8912b37bca9c29cd007f087018f1580f11811
[INFO] running `Command { std: "docker" "start" "-a" "82d9416a825beb71f0a271173cc8912b37bca9c29cd007f087018f1580f11811", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking ds210_project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `n` is never read
[INFO] [stdout]  --> src/graph.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Graph {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 9 |     pub n: usize,
[INFO] [stdout]   |         ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Graph` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `n` is never read
[INFO] [stdout]  --> src/graph.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Graph {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 9 |     pub n: usize,
[INFO] [stdout]   |         ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Graph` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.26s
[INFO] running `Command { std: "docker" "inspect" "82d9416a825beb71f0a271173cc8912b37bca9c29cd007f087018f1580f11811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82d9416a825beb71f0a271173cc8912b37bca9c29cd007f087018f1580f11811", kill_on_drop: false }`
[INFO] [stdout] 82d9416a825beb71f0a271173cc8912b37bca9c29cd007f087018f1580f11811