[INFO] cloning repository https://github.com/QuarkNerd/Rust_Noughts_-_Crosses
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/QuarkNerd/Rust_Noughts_-_Crosses" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuarkNerd%2FRust_Noughts_-_Crosses", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuarkNerd%2FRust_Noughts_-_Crosses'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f53c1bfad82ec029705eb61cbe805456c140a76b
[INFO] checking QuarkNerd/Rust_Noughts_-_Crosses against master#db870ea71b6dcc7a91b999420b88f41d3cdd13e1 for pr-75192
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuarkNerd%2FRust_Noughts_-_Crosses" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/QuarkNerd/Rust_Noughts_-_Crosses on toolchain db870ea71b6dcc7a91b999420b88f41d3cdd13e1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/QuarkNerd/Rust_Noughts_-_Crosses
[INFO] finished tweaking git repo https://github.com/QuarkNerd/Rust_Noughts_-_Crosses
[INFO] tweaked toml for git repo https://github.com/QuarkNerd/Rust_Noughts_-_Crosses written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/QuarkNerd/Rust_Noughts_-_Crosses already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fcf66dfea517ab9561f7a4a78d6120d73e288079889b249d41389fe05e3323f5
[INFO] running `Command { std: "docker" "start" "-a" "fcf66dfea517ab9561f7a4a78d6120d73e288079889b249d41389fe05e3323f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcf66dfea517ab9561f7a4a78d6120d73e288079889b249d41389fe05e3323f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcf66dfea517ab9561f7a4a78d6120d73e288079889b249d41389fe05e3323f5", kill_on_drop: false }`
[INFO] [stdout] fcf66dfea517ab9561f7a4a78d6120d73e288079889b249d41389fe05e3323f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e51ded90e2be208e9857946869cc10de8dbf6e76b3c2c3f010d708f3b6d7b517
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e51ded90e2be208e9857946869cc10de8dbf6e76b3c2c3f010d708f3b6d7b517", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking tictactoe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/utilities.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     file.write_all(string.as_bytes()); // as bytes converts it to byte array
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/utilities.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     file.write_all(string.as_bytes()); // as bytes converts it to byte array
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.89s
[INFO] running `Command { std: "docker" "inspect" "e51ded90e2be208e9857946869cc10de8dbf6e76b3c2c3f010d708f3b6d7b517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e51ded90e2be208e9857946869cc10de8dbf6e76b3c2c3f010d708f3b6d7b517", kill_on_drop: false }`
[INFO] [stdout] e51ded90e2be208e9857946869cc10de8dbf6e76b3c2c3f010d708f3b6d7b517