[INFO] updating cached repository https://github.com/timokau/rust-tic_tac_toe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 612499fb882be551e01ca2dc9c94e900185298c4
[INFO] checking timokau/rust-tic_tac_toe against master#1557fb031b272b4c5bfcc7de5df7eddc7b36a584 for pr-73166
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimokau%2Frust-tic_tac_toe" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/timokau/rust-tic_tac_toe on toolchain 1557fb031b272b4c5bfcc7de5df7eddc7b36a584
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/timokau/rust-tic_tac_toe
[INFO] finished tweaking git repo https://github.com/timokau/rust-tic_tac_toe
[INFO] tweaked toml for git repo https://github.com/timokau/rust-tic_tac_toe written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/timokau/rust-tic_tac_toe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb50426fa17c7c8729ed61e02e9d2d3ebcdb2545b33f4d5af6f6529a8da4bc2b
[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" "eb50426fa17c7c8729ed61e02e9d2d3ebcdb2545b33f4d5af6f6529a8da4bc2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb50426fa17c7c8729ed61e02e9d2d3ebcdb2545b33f4d5af6f6529a8da4bc2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb50426fa17c7c8729ed61e02e9d2d3ebcdb2545b33f4d5af6f6529a8da4bc2b", kill_on_drop: false }`
[INFO] [stdout] eb50426fa17c7c8729ed61e02e9d2d3ebcdb2545b33f4d5af6f6529a8da4bc2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab947d2160dc0e5e7718525e95770cb7073a44d4752d4177a2e110d5de281c83
[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" "ab947d2160dc0e5e7718525e95770cb7073a44d4752d4177a2e110d5de281c83", kill_on_drop: false }`
[INFO] [stderr]     Checking tic_tac_toe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let players: Vec<&Player> = vec![&term_player_1, &term_player_2];
[INFO] [stdout]    |                       ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let players: Vec<&Player> = vec![&term_player_1, &term_player_2];
[INFO] [stdout]    |                       ^^^^^^ help: use `dyn`: `dyn Player`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_some`
[INFO] [stdout]   --> src/game/mod.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn is_some(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_none`
[INFO] [stdout]   --> src/game/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn is_none(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "ab947d2160dc0e5e7718525e95770cb7073a44d4752d4177a2e110d5de281c83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab947d2160dc0e5e7718525e95770cb7073a44d4752d4177a2e110d5de281c83", kill_on_drop: false }`
[INFO] [stdout] ab947d2160dc0e5e7718525e95770cb7073a44d4752d4177a2e110d5de281c83