[INFO] cloning repository https://github.com/taylor1791/hearts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/taylor1791/hearts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaylor1791%2Fhearts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaylor1791%2Fhearts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7390d573a366ebe69df75a5fb3a9042ed48b87e4
[INFO] documenting taylor1791/hearts against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaylor1791%2Fhearts" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/taylor1791/hearts on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/taylor1791/hearts
[INFO] finished tweaking git repo https://github.com/taylor1791/hearts
[INFO] tweaked toml for git repo https://github.com/taylor1791/hearts written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/taylor1791/hearts already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 349daf9bff1d728af821d175d4095a6c75dfedd83c9984c6cb40d661707ce3f2
[INFO] running `Command { std: "docker" "start" "-a" "349daf9bff1d728af821d175d4095a6c75dfedd83c9984c6cb40d661707ce3f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "349daf9bff1d728af821d175d4095a6c75dfedd83c9984c6cb40d661707ce3f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "349daf9bff1d728af821d175d4095a6c75dfedd83c9984c6cb40d661707ce3f2", kill_on_drop: false }`
[INFO] [stdout] 349daf9bff1d728af821d175d4095a6c75dfedd83c9984c6cb40d661707ce3f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e88f9fcce3df8b191e1af6c379d45cebf70b67f7b021edd9d64eb8b63656561
[INFO] running `Command { std: "docker" "start" "-a" "8e88f9fcce3df8b191e1af6c379d45cebf70b67f7b021edd9d64eb8b63656561", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking hearts v0.1.0 (/opt/rustwide/workdir/hearts)
[INFO] [stderr]  Documenting hearts v0.1.0 (/opt/rustwide/workdir/hearts)
[INFO] [stdout] warning: field is never read: `round`
[INFO] [stdout]  --> hearts/src/game.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     round: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Game` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> hearts/src/game.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lead`
[INFO] [stdout]    --> hearts/src/round.rs:255:5
[INFO] [stdout]     |
[INFO] [stdout] 255 |     lead: PlayerId,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Trick` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> hearts/src/round.rs:253:10
[INFO] [stdout]     |
[INFO] [stdout] 253 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting auto_player v0.1.0 (/opt/rustwide/workdir/auto_player)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.20s
[INFO] running `Command { std: "docker" "inspect" "8e88f9fcce3df8b191e1af6c379d45cebf70b67f7b021edd9d64eb8b63656561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e88f9fcce3df8b191e1af6c379d45cebf70b67f7b021edd9d64eb8b63656561", kill_on_drop: false }`
[INFO] [stdout] 8e88f9fcce3df8b191e1af6c379d45cebf70b67f7b021edd9d64eb8b63656561
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 3271b033dd9b25d346e3fb9cd5bf7f7437a4210c6646efbbc2c8f34129db4b64
[INFO] running `Command { std: "docker" "start" "-a" "3271b033dd9b25d346e3fb9cd5bf7f7437a4210c6646efbbc2c8f34129db4b64", kill_on_drop: false }`
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "3271b033dd9b25d346e3fb9cd5bf7f7437a4210c6646efbbc2c8f34129db4b64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3271b033dd9b25d346e3fb9cd5bf7f7437a4210c6646efbbc2c8f34129db4b64", kill_on_drop: false }`
[INFO] [stdout] 3271b033dd9b25d346e3fb9cd5bf7f7437a4210c6646efbbc2c8f34129db4b64