[INFO] cloning repository https://github.com/jleahred/connect4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jleahred/connect4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjleahred%2Fconnect4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjleahred%2Fconnect4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3516a4ce664330778521d8698f4545d40e79fb9d
[INFO] checking jleahred/connect4 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjleahred%2Fconnect4" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jleahred/connect4 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jleahred/connect4
[INFO] finished tweaking git repo https://github.com/jleahred/connect4
[INFO] tweaked toml for git repo https://github.com/jleahred/connect4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jleahred/connect4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4fd1c73ecec57c58cc8d4512ab2512daae3a677569f72f4c10a6b3d79aefcbb
[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" "e4fd1c73ecec57c58cc8d4512ab2512daae3a677569f72f4c10a6b3d79aefcbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4fd1c73ecec57c58cc8d4512ab2512daae3a677569f72f4c10a6b3d79aefcbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4fd1c73ecec57c58cc8d4512ab2512daae3a677569f72f4c10a6b3d79aefcbb", kill_on_drop: false }`
[INFO] [stdout] e4fd1c73ecec57c58cc8d4512ab2512daae3a677569f72f4c10a6b3d79aefcbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a032e1ac445cf95356bd754717df313cef3d4344bc8ce04076c2dd8304c448f
[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" "1a032e1ac445cf95356bd754717df313cef3d4344bc8ce04076c2dd8304c448f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.2
[INFO] [stderr]    Compiling base-x v0.2.3
[INFO] [stderr]     Checking idata v0.1.1 (https://github.com/jleahred/idata.git#08eab4e3)
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling stdweb v0.4.12
[INFO] [stderr]     Checking bincode v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.4
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]     Checking yew v0.5.0 (https://github.com/DenisKolodin/yew#5a040a19)
[INFO] [stderr]     Checking connect4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/engine/patterns.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |         (other - curr)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/html/game.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 |     job: Option<Box<Task>>,
[INFO] [stdout]    |                     ^^^^ help: use `dyn`: `dyn Task`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/html/config.rs:9:34
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub onstart: Option<Callback<(Config)>>,
[INFO] [stdout]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/html/config.rs:25:34
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub onstart: Option<Callback<(Config)>>,
[INFO] [stdout]    |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:113:54
[INFO] [stdout]     |
[INFO] [stdout] 113 |                     <option value="I play", selected={machine_plays()}, onclick=|_| Msg::PlayersComputerPlays,>{"play with me"}</option>
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:114:59
[INFO] [stdout]     |
[INFO] [stdout] 114 | ...   <option value="two players", selected={self.config.players == ConfigPlayers::TwoPlayers}, onclick=|_| Msg::PlayersTwoHumans,>{"two ...
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:134:68
[INFO] [stdout]     |
[INFO] [stdout] 134 | ...   <option value="Mosquito's brain", selected={level == Level::Mosquito}, onclick=|_| Msg::L(Level::Mosquito),>{"Mosquito's brain"}</o...
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:135:61
[INFO] [stdout]     |
[INFO] [stdout] 135 | ...   <option value="Weak mind", selected={level == Level::WeakMind}, onclick=|_| Msg::L(Level::WeakMind),>{"Weak mind"}</option>
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:136:61
[INFO] [stdout]     |
[INFO] [stdout] 136 |                         <option value="just easy", selected={level == Level::Easy}, onclick=|_| Msg::L(Level::Easy),>{"just easy"}</option>
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/engine/patterns.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |         (other - curr)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/html/game.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 |     job: Option<Box<Task>>,
[INFO] [stdout]    |                     ^^^^ help: use `dyn`: `dyn Task`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/html/config.rs:9:34
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub onstart: Option<Callback<(Config)>>,
[INFO] [stdout]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/html/config.rs:25:34
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub onstart: Option<Callback<(Config)>>,
[INFO] [stdout]    |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:113:54
[INFO] [stdout]     |
[INFO] [stdout] 113 |                     <option value="I play", selected={machine_plays()}, onclick=|_| Msg::PlayersComputerPlays,>{"play with me"}</option>
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:114:59
[INFO] [stdout]     |
[INFO] [stdout] 114 | ...   <option value="two players", selected={self.config.players == ConfigPlayers::TwoPlayers}, onclick=|_| Msg::PlayersTwoHumans,>{"two ...
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:134:68
[INFO] [stdout]     |
[INFO] [stdout] 134 | ...   <option value="Mosquito's brain", selected={level == Level::Mosquito}, onclick=|_| Msg::L(Level::Mosquito),>{"Mosquito's brain"}</o...
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:135:61
[INFO] [stdout]     |
[INFO] [stdout] 135 | ...   <option value="Weak mind", selected={level == Level::WeakMind}, onclick=|_| Msg::L(Level::WeakMind),>{"Weak mind"}</option>
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around `if` condition
[INFO] [stdout]    --> src/html/config.rs:136:61
[INFO] [stdout]     |
[INFO] [stdout] 136 |                         <option value="just easy", selected={level == Level::Easy}, onclick=|_| Msg::L(Level::Easy),>{"just easy"}</option>
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `job`
[INFO] [stdout]   --> src/html/game.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     job: Option<Box<Task>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PlayersAnalisys`
[INFO] [stdout]   --> src/html/config.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     PlayersAnalisys,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `job`
[INFO] [stdout]   --> src/html/game.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     job: Option<Box<Task>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PlayersAnalisys`
[INFO] [stdout]   --> src/html/config.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     PlayersAnalisys,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.13s
[INFO] running `Command { std: "docker" "inspect" "1a032e1ac445cf95356bd754717df313cef3d4344bc8ce04076c2dd8304c448f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a032e1ac445cf95356bd754717df313cef3d4344bc8ce04076c2dd8304c448f", kill_on_drop: false }`
[INFO] [stdout] 1a032e1ac445cf95356bd754717df313cef3d4344bc8ce04076c2dd8304c448f