[INFO] cloning repository https://github.com/IEavan/Connect4-Monte-Carlo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IEavan/Connect4-Monte-Carlo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIEavan%2FConnect4-Monte-Carlo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIEavan%2FConnect4-Monte-Carlo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e120a2b3992e4f68973aa338398c220e7a0bde8
[INFO] testing IEavan/Connect4-Monte-Carlo against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIEavan%2FConnect4-Monte-Carlo" "/workspace/builds/worker-105/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-105/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IEavan/Connect4-Monte-Carlo on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/IEavan/Connect4-Monte-Carlo
[INFO] finished tweaking git repo https://github.com/IEavan/Connect4-Monte-Carlo
[INFO] tweaked toml for git repo https://github.com/IEavan/Connect4-Monte-Carlo written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate git repo https://github.com/IEavan/Connect4-Monte-Carlo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27a1c0a428a24a397bbf0b715657cbc7be357b95850e1f28c64b64028b1d1d87
[INFO] running `Command { std: "docker" "start" "-a" "27a1c0a428a24a397bbf0b715657cbc7be357b95850e1f28c64b64028b1d1d87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27a1c0a428a24a397bbf0b715657cbc7be357b95850e1f28c64b64028b1d1d87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27a1c0a428a24a397bbf0b715657cbc7be357b95850e1f28c64b64028b1d1d87", kill_on_drop: false }`
[INFO] [stdout] 27a1c0a428a24a397bbf0b715657cbc7be357b95850e1f28c64b64028b1d1d87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d6f58016f5d4084ee343546590d7c9070c1dc7f7d057016d83a79560fe2af46
[INFO] running `Command { std: "docker" "start" "-a" "2d6f58016f5d4084ee343546590d7c9070c1dc7f7d057016d83a79560fe2af46", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling connect4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         try!(writeln!(f, "{:?}'s Turn", self.turn));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |             try!(write!(f, "["));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:190:13
[INFO] [stdout]     |
[INFO] [stdout] 190 |             try!(writeln!(f, " ]"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:188:17
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 try!(write!(f, "{}", cell_char));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         try!(writeln!(f, "{:?}'s Turn", self.turn));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |             try!(write!(f, "["));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |             try!(writeln!(f, " ]"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |                 try!(write!(f, "{}", cell_char));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |         try!(writeln!(f, "{:?}'s Turn                {:?}'s Turn",
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:245:13
[INFO] [stdout]     |
[INFO] [stdout] 245 |             try!(write!(f, "["));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 256 |             try!(write!(f, " ]"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:264:13
[INFO] [stdout]     |
[INFO] [stdout] 264 |             try!(write!(f, "["));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |             try!(writeln!(f, " ]"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 try!(write!(f, "{}", cell_char));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:259:17
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 try!(write!(f, " --> "));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:261:17
[INFO] [stdout]     |
[INFO] [stdout] 261 |                 try!(write!(f, "     "));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:273:17
[INFO] [stdout]     |
[INFO] [stdout] 273 |                 try!(write!(f, "{}", cell_char));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.79s
[INFO] running `Command { std: "docker" "inspect" "2d6f58016f5d4084ee343546590d7c9070c1dc7f7d057016d83a79560fe2af46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d6f58016f5d4084ee343546590d7c9070c1dc7f7d057016d83a79560fe2af46", kill_on_drop: false }`
[INFO] [stdout] 2d6f58016f5d4084ee343546590d7c9070c1dc7f7d057016d83a79560fe2af46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8043828c442b7cc0d8ac015a618c437e8aba50aa858aa02d18bfd68a291252c1
[INFO] running `Command { std: "docker" "start" "-a" "8043828c442b7cc0d8ac015a618c437e8aba50aa858aa02d18bfd68a291252c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling connect4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         try!(writeln!(f, "{:?}'s Turn", self.turn));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |             try!(write!(f, "["));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:190:13
[INFO] [stdout]     |
[INFO] [stdout] 190 |             try!(writeln!(f, " ]"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:188:17
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 try!(write!(f, "{}", cell_char));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         try!(writeln!(f, "{:?}'s Turn", self.turn));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |             try!(write!(f, "["));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |             try!(writeln!(f, " ]"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |                 try!(write!(f, "{}", cell_char));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |         try!(writeln!(f, "{:?}'s Turn                {:?}'s Turn",
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:245:13
[INFO] [stdout]     |
[INFO] [stdout] 245 |             try!(write!(f, "["));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 256 |             try!(write!(f, " ]"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:264:13
[INFO] [stdout]     |
[INFO] [stdout] 264 |             try!(write!(f, "["));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |             try!(writeln!(f, " ]"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 try!(write!(f, "{}", cell_char));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:259:17
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 try!(write!(f, " --> "));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:261:17
[INFO] [stdout]     |
[INFO] [stdout] 261 |                 try!(write!(f, "     "));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/grid.rs:273:17
[INFO] [stdout]     |
[INFO] [stdout] 273 |                 try!(write!(f, "{}", cell_char));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "8043828c442b7cc0d8ac015a618c437e8aba50aa858aa02d18bfd68a291252c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8043828c442b7cc0d8ac015a618c437e8aba50aa858aa02d18bfd68a291252c1", kill_on_drop: false }`
[INFO] [stdout] 8043828c442b7cc0d8ac015a618c437e8aba50aa858aa02d18bfd68a291252c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6299a12321f8db7f710a743f17acd78d94384ff0fe5e113dfbcb7ea837e9da54
[INFO] running `Command { std: "docker" "start" "-a" "6299a12321f8db7f710a743f17acd78d94384ff0fe5e113dfbcb7ea837e9da54", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         try!(writeln!(f, "{:?}'s Turn", self.turn));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:179:13
[INFO] [stderr]     |
[INFO] [stderr] 179 |             try!(write!(f, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |             try!(writeln!(f, " ]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:188:17
[INFO] [stderr]     |
[INFO] [stderr] 188 |                 try!(write!(f, "{}", cell_char));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:198:9
[INFO] [stderr]     |
[INFO] [stderr] 198 |         try!(writeln!(f, "{:?}'s Turn", self.turn));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |             try!(write!(f, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:211:13
[INFO] [stderr]     |
[INFO] [stderr] 211 |             try!(writeln!(f, " ]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 try!(write!(f, "{}", cell_char));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:239:9
[INFO] [stderr]     |
[INFO] [stderr] 239 |         try!(writeln!(f, "{:?}'s Turn                {:?}'s Turn",
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:245:13
[INFO] [stderr]     |
[INFO] [stderr] 245 |             try!(write!(f, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:256:13
[INFO] [stderr]     |
[INFO] [stderr] 256 |             try!(write!(f, " ]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:264:13
[INFO] [stderr]     |
[INFO] [stderr] 264 |             try!(write!(f, "["));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:275:13
[INFO] [stderr]     |
[INFO] [stderr] 275 |             try!(writeln!(f, " ]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:254:17
[INFO] [stderr]     |
[INFO] [stderr] 254 |                 try!(write!(f, "{}", cell_char));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:259:17
[INFO] [stderr]     |
[INFO] [stderr] 259 |                 try!(write!(f, " --> "));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:261:17
[INFO] [stderr]     |
[INFO] [stderr] 261 |                 try!(write!(f, "     "));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/grid.rs:273:17
[INFO] [stderr]     |
[INFO] [stderr] 273 |                 try!(write!(f, "{}", cell_char));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `connect4` (bin "connect4" test) generated 17 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/connect4-089122f66c6ba85b)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test grid::test::test_cannot_insert_after_win ... ok
[INFO] [stdout] test grid::test::test_detect_column_win ... ok
[INFO] [stdout] test grid::test::test_detect_rising_win ... ok
[INFO] [stdout] test grid::test::test_detect_row_win ... ok
[INFO] [stdout] test grid::test::test_no_early_winner ... ok
[INFO] [stdout] test grid::test::test_no_moves_after_win ... ok
[INFO] [stderr] error: test failed, to rerun pass '--bin connect4'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/connect4-089122f66c6ba85b` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "6299a12321f8db7f710a743f17acd78d94384ff0fe5e113dfbcb7ea837e9da54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6299a12321f8db7f710a743f17acd78d94384ff0fe5e113dfbcb7ea837e9da54", kill_on_drop: false }`
[INFO] [stdout] 6299a12321f8db7f710a743f17acd78d94384ff0fe5e113dfbcb7ea837e9da54