[INFO] cloning repository https://github.com/rugyoga/chess-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rugyoga/chess-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frugyoga%2Fchess-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frugyoga%2Fchess-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54efb9010aef2bd1b20a6c5480f08be0ffa4b34b
[INFO] checking rugyoga/chess-rust against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frugyoga%2Fchess-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rugyoga/chess-rust on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rugyoga/chess-rust
[INFO] finished tweaking git repo https://github.com/rugyoga/chess-rust
[INFO] tweaked toml for git repo https://github.com/rugyoga/chess-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rugyoga/chess-rust 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5c0175c9628e4d5b4cad5fc1b7f041369e9ef10517691b539e3b9e2108008ed
[INFO] running `Command { std: "docker" "start" "-a" "e5c0175c9628e4d5b4cad5fc1b7f041369e9ef10517691b539e3b9e2108008ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5c0175c9628e4d5b4cad5fc1b7f041369e9ef10517691b539e3b9e2108008ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c0175c9628e4d5b4cad5fc1b7f041369e9ef10517691b539e3b9e2108008ed", kill_on_drop: false }`
[INFO] [stdout] e5c0175c9628e4d5b4cad5fc1b7f041369e9ef10517691b539e3b9e2108008ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6bb59863f0bbec97b7680e5a900baa14d989f5c72c0c573c1c26c9963bf411a
[INFO] running `Command { std: "docker" "start" "-a" "e6bb59863f0bbec97b7680e5a900baa14d989f5c72c0c573c1c26c9963bf411a", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `Square` is more private than the item `square`
[INFO] [stdout]   --> src/pieces.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn square(file: File, rank: Rank) -> Square {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `square` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Square` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/pieces.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Square {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Square` is more private than the item `file`
[INFO] [stdout]   --> src/pieces.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn file(square: Square) -> File {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `file` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Square` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/pieces.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Square {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Square` is more private than the item `rank`
[INFO] [stdout]   --> src/pieces.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn rank(square: Square) -> Rank {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `rank` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Square` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/pieces.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Square {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Square` is more private than the item `square`
[INFO] [stdout]   --> src/pieces.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn square(file: File, rank: Rank) -> Square {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `square` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Square` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/pieces.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Square {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Square` is more private than the item `file`
[INFO] [stdout]   --> src/pieces.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn file(square: Square) -> File {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `file` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Square` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/pieces.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Square {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Square` is more private than the item `rank`
[INFO] [stdout]   --> src/pieces.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn rank(square: Square) -> Rank {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `rank` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Square` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/pieces.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Square {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "e6bb59863f0bbec97b7680e5a900baa14d989f5c72c0c573c1c26c9963bf411a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6bb59863f0bbec97b7680e5a900baa14d989f5c72c0c573c1c26c9963bf411a", kill_on_drop: false }`
[INFO] [stdout] e6bb59863f0bbec97b7680e5a900baa14d989f5c72c0c573c1c26c9963bf411a