[INFO] cloning repository https://github.com/ruduran/game-of-life
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ruduran/game-of-life" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruduran%2Fgame-of-life", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruduran%2Fgame-of-life'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c7360e0a6cbcea8572bfc5835c30908a367c14b
[INFO] testing ruduran/game-of-life against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruduran%2Fgame-of-life" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ruduran/game-of-life on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ruduran/game-of-life
[INFO] finished tweaking git repo https://github.com/ruduran/game-of-life
[INFO] tweaked toml for git repo https://github.com/ruduran/game-of-life written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ruduran/game-of-life already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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] 905f43573a2793c65e9cd41f4e1be6acc62e85f52df3f4b1e5a0d90342ce5e53
[INFO] running `Command { std: "docker" "start" "-a" "905f43573a2793c65e9cd41f4e1be6acc62e85f52df3f4b1e5a0d90342ce5e53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "905f43573a2793c65e9cd41f4e1be6acc62e85f52df3f4b1e5a0d90342ce5e53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "905f43573a2793c65e9cd41f4e1be6acc62e85f52df3f4b1e5a0d90342ce5e53", kill_on_drop: false }`
[INFO] [stdout] 905f43573a2793c65e9cd41f4e1be6acc62e85f52df3f4b1e5a0d90342ce5e53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df2c306658e545e42e5491ca09a7215182e4782d5d0a71a17c61284c943c3ffa
[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" "df2c306658e545e42e5491ca09a7215182e4782d5d0a71a17c61284c943c3ffa", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling serde v1.0.59
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]    Compiling ncurses v5.91.0
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]    Compiling serde_derive v1.0.59
[INFO] [stderr]    Compiling serde_json v1.0.17
[INFO] [stderr]    Compiling game_of_life v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/grid.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         serde_json::to_writer_pretty(file, &g);
[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 25.07s
[INFO] running `Command { std: "docker" "inspect" "df2c306658e545e42e5491ca09a7215182e4782d5d0a71a17c61284c943c3ffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df2c306658e545e42e5491ca09a7215182e4782d5d0a71a17c61284c943c3ffa", kill_on_drop: false }`
[INFO] [stdout] df2c306658e545e42e5491ca09a7215182e4782d5d0a71a17c61284c943c3ffa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2de269d2992447dd1210819c3f1ebe892b8b9a997d2546bc914c29a0dce69ac
[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" "c2de269d2992447dd1210819c3f1ebe892b8b9a997d2546bc914c29a0dce69ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling game_of_life v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/grid.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         serde_json::to_writer_pretty(file, &g);
[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 test [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "c2de269d2992447dd1210819c3f1ebe892b8b9a997d2546bc914c29a0dce69ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2de269d2992447dd1210819c3f1ebe892b8b9a997d2546bc914c29a0dce69ac", kill_on_drop: false }`
[INFO] [stdout] c2de269d2992447dd1210819c3f1ebe892b8b9a997d2546bc914c29a0dce69ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 520421ac813675d9da43d1957b6cccb4817157d61ec22cdfdd8a37da349af54e
[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" "520421ac813675d9da43d1957b6cccb4817157d61ec22cdfdd8a37da349af54e", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/grid.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         serde_json::to_writer_pretty(file, &g);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `game_of_life` (bin "game_of_life" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/game_of_life-faadddd17853f86a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "520421ac813675d9da43d1957b6cccb4817157d61ec22cdfdd8a37da349af54e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "520421ac813675d9da43d1957b6cccb4817157d61ec22cdfdd8a37da349af54e", kill_on_drop: false }`
[INFO] [stdout] 520421ac813675d9da43d1957b6cccb4817157d61ec22cdfdd8a37da349af54e