[INFO] cloning repository https://github.com/OOP-opg/chessmate-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OOP-opg/chessmate-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOOP-opg%2Fchessmate-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOOP-opg%2Fchessmate-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71193925dca7eb1e7d20bfa48684391b5065639f
[INFO] checking OOP-opg/chessmate-rs against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOOP-opg%2Fchessmate-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OOP-opg/chessmate-rs on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OOP-opg/chessmate-rs
[INFO] finished tweaking git repo https://github.com/OOP-opg/chessmate-rs
[INFO] tweaked toml for git repo https://github.com/OOP-opg/chessmate-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/OOP-opg/chessmate-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9428bf9127dfa78ac4cf3ef722093808a6adf7b3576e130152bdedc6333e732f
[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" "9428bf9127dfa78ac4cf3ef722093808a6adf7b3576e130152bdedc6333e732f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9428bf9127dfa78ac4cf3ef722093808a6adf7b3576e130152bdedc6333e732f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9428bf9127dfa78ac4cf3ef722093808a6adf7b3576e130152bdedc6333e732f", kill_on_drop: false }`
[INFO] [stdout] 9428bf9127dfa78ac4cf3ef722093808a6adf7b3576e130152bdedc6333e732f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 9e72002a5b1c1e48ce29d7fd430a5d796fe0f225d503281bd5691d3a6b215757
[INFO] running `Command { std: "docker" "start" "-a" "9e72002a5b1c1e48ce29d7fd430a5d796fe0f225d503281bd5691d3a6b215757", kill_on_drop: false }`
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[INFO] [stderr]     Checking chessmate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TicketObserver`
[INFO] [stdout]   --> src/handlers.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     TicketObserver,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PairObserver`
[INFO] [stdout]  --> src/runtime.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::domain::{AbstractLobby, Wish, PairObserver};
[INFO] [stdout]   |                                          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lobby::Lobby`
[INFO] [stdout]  --> src/runtime.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lobby::Lobby;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::observers::TicketObserver`
[INFO] [stdout]   --> src/server.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::observers::TicketObserver;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TicketObserver`
[INFO] [stdout]   --> src/handlers.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     TicketObserver,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PairObserver`
[INFO] [stdout]  --> src/runtime.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::domain::{AbstractLobby, Wish, PairObserver};
[INFO] [stdout]   |                                          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lobby::Lobby`
[INFO] [stdout]  --> src/runtime.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lobby::Lobby;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::observers::TicketObserver`
[INFO] [stdout]   --> src/server.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::observers::TicketObserver;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/runtime.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         self.lobby.add_ticket(msg.user_id, msg.wish, observer);
[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: unused `Result` that must be used
[INFO] [stdout]   --> src/runtime.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         self.lobby.add_ticket(msg.user_id, msg.wish, observer);
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 19s
[INFO] running `Command { std: "docker" "inspect" "9e72002a5b1c1e48ce29d7fd430a5d796fe0f225d503281bd5691d3a6b215757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e72002a5b1c1e48ce29d7fd430a5d796fe0f225d503281bd5691d3a6b215757", kill_on_drop: false }`
[INFO] [stdout] 9e72002a5b1c1e48ce29d7fd430a5d796fe0f225d503281bd5691d3a6b215757