[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-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIEavan%2FConnect4-Monte-Carlo" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IEavan/Connect4-Monte-Carlo on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/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-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 831bc5315b495a76f1963dca6ac62de5a5ea45f490f7b871745de03d93b2d1dd
[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" "831bc5315b495a76f1963dca6ac62de5a5ea45f490f7b871745de03d93b2d1dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "831bc5315b495a76f1963dca6ac62de5a5ea45f490f7b871745de03d93b2d1dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "831bc5315b495a76f1963dca6ac62de5a5ea45f490f7b871745de03d93b2d1dd", kill_on_drop: false }`
[INFO] [stdout] 831bc5315b495a76f1963dca6ac62de5a5ea45f490f7b871745de03d93b2d1dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38c029d7ea77f954cebb1d31eb4d99bdc321f1590b86437d6061be982164e35f
[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" "38c029d7ea77f954cebb1d31eb4d99bdc321f1590b86437d6061be982164e35f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: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: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: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: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: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: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: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: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: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: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:273:17
[INFO] [stdout]     |
[INFO] [stdout] 273 |                 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:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |             try!(writeln!(f, " ]"));
[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 6.18s
[INFO] running `Command { std: "docker" "inspect" "38c029d7ea77f954cebb1d31eb4d99bdc321f1590b86437d6061be982164e35f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38c029d7ea77f954cebb1d31eb4d99bdc321f1590b86437d6061be982164e35f", kill_on_drop: false }`
[INFO] [stdout] 38c029d7ea77f954cebb1d31eb4d99bdc321f1590b86437d6061be982164e35f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7748df44d87964b5637bf7517427d06d1a2c84f281351d1ea9c44fc531480467
[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" "7748df44d87964b5637bf7517427d06d1a2c84f281351d1ea9c44fc531480467", 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: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: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: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: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: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: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: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: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: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: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:273:17
[INFO] [stdout]     |
[INFO] [stdout] 273 |                 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:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |             try!(writeln!(f, " ]"));
[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 1.51s
[INFO] running `Command { std: "docker" "inspect" "7748df44d87964b5637bf7517427d06d1a2c84f281351d1ea9c44fc531480467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7748df44d87964b5637bf7517427d06d1a2c84f281351d1ea9c44fc531480467", kill_on_drop: false }`
[INFO] [stdout] 7748df44d87964b5637bf7517427d06d1a2c84f281351d1ea9c44fc531480467
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8ba6c663c04cdf587e6ae90abe5032500cdfac48e4abfacdd93140f8f39c6761
[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" "8ba6c663c04cdf587e6ae90abe5032500cdfac48e4abfacdd93140f8f39c6761", kill_on_drop: false }`
[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: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: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: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: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: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: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: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: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: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: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:273:17
[INFO] [stderr]     |
[INFO] [stderr] 273 |                 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:275:13
[INFO] [stderr]     |
[INFO] [stderr] 275 |             try!(writeln!(f, " ]"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/connect4-afc1bc51f7e53e3d
[INFO] [stdout] 
[INFO] [stderr] thread '<unnamed>' panicked at 'attempted to leave type `nodrop::NoDrop<(epoch::Epoch, garbage::Bag)>` uninitialized, which is invalid', /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/mem/mod.rs:658:9
[INFO] [stdout] running 8 tests
[INFO] [stderr] stack backtrace:
[INFO] [stdout] test grid::test::test_cannot_insert_after_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] [stdout] test grid::test::test_detect_column_win ... ok
[INFO] [stderr]    0:     0x5608b4ef4f90 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]    1:     0x5608b4ef4f90 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5608b4ef4f90 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]    3:     0x5608b4ef4f90 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]    4:     0x5608b4f173bc - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]    5:     0x5608b4ef1432 - std::io::Write::write_fmt::hac97d5cb5753e2ec
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stderr]    6:     0x5608b4ef74bd - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]    7:     0x5608b4ef74bd - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]    8:     0x5608b4ef74bd - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stderr]    9:     0x5608b4ef7168 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:227
[INFO] [stderr]   10:     0x5608b4ef7ba1 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:577
[INFO] [stderr]   11:     0x5608b4ef7749 - std::panicking::begin_panic_handler::{{closure}}::h8b43445b254eeb30
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:484
[INFO] [stderr]   12:     0x5608b4ef541c - std::sys_common::backtrace::__rust_end_short_backtrace::hacd691450edfeae0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]   13:     0x5608b4ef7709 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:483
[INFO] [stderr]   14:     0x5608b4f15c91 - core::panicking::panic_fmt::h5b17d4a0e853d0f5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/panicking.rs:85
[INFO] [stderr]   15:     0x5608b4f15bdd - core::panicking::panic::hc6be4d7009fb30ae
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/panicking.rs:50
[INFO] [stderr]   16:     0x5608b4ea8a66 - core::mem::uninitialized::h1629cde0295fd01a
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/mem/mod.rs:658
[INFO] [stderr]   17:     0x5608b4ea8a66 - crossbeam_epoch::sync::queue::Queue<T>::new::h7922a1432b6cde48
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-epoch-0.3.1/src/sync/queue.rs:57
[INFO] [stderr]   18:     0x5608b4e9f6be - crossbeam_epoch::internal::Global::new::h30be001b931304c9
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-epoch-0.3.1/src/internal.rs:63
[INFO] [stderr]   19:     0x5608b4eaa801 - crossbeam_epoch::collector::Collector::new::hcf9eb2b7921d5386
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-epoch-0.3.1/src/collector.rs:32
[INFO] [stderr]   20:     0x5608b4ea39fa - <crossbeam_epoch::default::COLLECTOR as core::ops::deref::Deref>::deref::__static_ref_initialize::h842701e89f37db25
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-epoch-0.3.1/src/default.rs:12
[INFO] [stderr]   21:     0x5608b4ea39fa - core::ops::function::FnOnce::call_once::h1f77dca71659ab98
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stderr]   22:     0x5608b4ea38e3 - lazy_static::lazy::Lazy<T>::get::{{closure}}::h8bdc5c00cec803b6
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.1.0/src/inline_lazy.rs:28
[INFO] [stderr]   23:     0x5608b4eab86f - std::sync::once::Once::call_once::{{closure}}::h006b607e4428e05f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sync/once.rs:261
[INFO] [stderr]   24:     0x5608b4ef47f2 - std::sync::once::Once::call_inner::h33bd609ddf05a465
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sync/once.rs:419
[INFO] [stderr]   25:     0x5608b4eab7f1 - std::sync::once::Once::call_once::hf154bcf933c661b7
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sync/once.rs:261
[INFO] [stderr]   26:     0x5608b4ea3818 - lazy_static::lazy::Lazy<T>::get::h3952f0ea4937ac95
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.1.0/src/inline_lazy.rs:27
[INFO] [stderr]   27:     0x5608b4ea3818 - <crossbeam_epoch::default::COLLECTOR as core::ops::deref::Deref>::deref::__stability::hf2a46730af29f478
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.1.0/src/lib.rs:149
[INFO] [stderr]   28:     0x5608b4ea3818 - <crossbeam_epoch::default::COLLECTOR as core::ops::deref::Deref>::deref::h0795e87dba104378
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.1.0/src/lib.rs:151
[INFO] [stderr]   29:     0x5608b4ea3874 - crossbeam_epoch::default::HANDLE::__init::h624a4d86ab28635a
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-epoch-0.3.1/src/default.rs:17
[INFO] [stderr]   30:     0x5608b4ea3a69 - core::ops::function::FnOnce::call_once::h67b80ac1ad5f9b57
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stderr]   31:     0x5608b4ea2d6c - std::thread::local::lazy::LazyKeyInner<T>::initialize::he1028102d9067209
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/local.rs:304
[INFO] [stderr]   32:     0x5608b4eab90d - std::thread::local::fast::Key<T>::try_initialize::h153877680dd61dae
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/local.rs:473
[INFO] [stderr]   33:     0x5608b4eaba57 - std::thread::local::fast::Key<T>::get::h1f2d58c606ba0575
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/local.rs:456
[INFO] [stderr]   34:     0x5608b4ea38bd - crossbeam_epoch::default::HANDLE::__getit::hb84e86675702770d
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/local.rs:183
[INFO] [stderr]   35:     0x5608b4e88acb - std::thread::local::LocalKey<T>::try_with::he4bbd0c68475f360
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/local.rs:271
[INFO] [stderr]   36:     0x5608b4e886df - std::thread::local::LocalKey<T>::with::hd5916a9709748974
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/local.rs:248
[INFO] [stderr]   37:     0x5608b4e83444 - crossbeam_epoch::default::is_pinned::hd64c7150369ad4f1
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-epoch-0.3.1/src/default.rs:33
[INFO] [stderr]   38:     0x5608b4e8ee75 - crossbeam_deque::Stealer<T>::steal::h015aaffa7b207cfb
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-deque-0.2.0/src/lib.rs:714
[INFO] [stderr]   39:     0x5608b4e7d9d3 - rayon_core::registry::WorkerThread::steal::{{closure}}::h5f4f76e34a38285c
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.4.1/src/registry.rs:614
[INFO] [stderr]   40:     0x5608b4e7aebb - core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut::hc6e0fb9d262eec8f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:269
[INFO] [stderr]   41:     0x5608b4e8c1a1 - core::iter::traits::iterator::Iterator::find_map::check::{{closure}}::h8fcacf0a20437b9e
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/iter/traits/iterator.rs:2261
[INFO] [stderr]   42:     0x5608b4e84435 - core::iter::adapters::filter_try_fold::{{closure}}::hdd42543ec87592e5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/iter/adapters/mod.rs:1078
[INFO] [stderr]   43:     0x5608b4e83e3c - core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut::h00d5ceb86a566399
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:269
[INFO] [stderr]   44:     0x5608b4e8c664 - core::iter::traits::iterator::Iterator::try_fold::hed766f7967ab654d
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/iter/traits/iterator.rs:1888
[INFO] [stderr]   45:     0x5608b4e876f3 - <core::iter::adapters::chain::Chain<A,B> as core::iter::traits::iterator::Iterator>::try_fold::h3d40353d9827969d
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/iter/adapters/chain.rs:105
[INFO] [stderr]   46:     0x5608b4e83d96 - <core::iter::adapters::Filter<I,P> as core::iter::traits::iterator::Iterator>::try_fold::h6b6fe4a60d90cd77
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/iter/adapters/mod.rs:1127
[INFO] [stderr]   47:     0x5608b4e83fa1 - core::iter::traits::iterator::Iterator::find_map::h4a681403b3145290
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/iter/traits/iterator.rs:2267
[INFO] [stderr]   48:     0x5608b4e83e06 - <core::iter::adapters::FilterMap<I,F> as core::iter::traits::iterator::Iterator>::next::hcf17c62544485878
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/iter/adapters/mod.rs:1245
[INFO] [stderr]   49:     0x5608b4e7d90b - rayon_core::registry::WorkerThread::steal::h2082a47b65054c70
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.4.1/src/registry.rs:608
[INFO] [stderr]   50:     0x5608b4e7d602 - rayon_core::registry::WorkerThread::wait_until_cold::{{closure}}::h2d4d5654f120d6bb
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.4.1/src/registry.rs:565
[INFO] [stderr]   51:     0x5608b4e955ff - core::option::Option<T>::or_else::hfb84954cce9690ec
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/option.rs:752
[INFO] [stderr]   52:     0x5608b4e7cf65 - rayon_core::registry::WorkerThread::wait_until_cold::h9b5dc98e253d5f0d
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.4.1/src/registry.rs:564
[INFO] [stderr]   53:     0x5608b4e7cd48 - rayon_core::registry::WorkerThread::wait_until::h5fddb71283c7c533
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.4.1/src/registry.rs:544
[INFO] [stderr]   54:     0x5608b4e7de9b - rayon_core::registry::main_loop::hfb6cfd70147a319c
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.4.1/src/registry.rs:666
[INFO] [stderr]   55:     0x5608b4e7c2ed - rayon_core::registry::Registry::new::{{closure}}::h5b48299127d3c713
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rayon-core-1.4.1/src/registry.rs:135
[INFO] [stderr]   56:     0x5608b4e838ce - std::sys_common::backtrace::__rust_begin_short_backtrace::h8673530077a9e02f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]   57:     0x5608b4e8a1b2 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hdf9e6eb1934f8d27
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:464
[INFO] [stderr]   58:     0x5608b4e8f7f2 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9dc112da8a3bbe0a
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stderr]   59:     0x5608b4e96cae - std::panicking::try::do_call::hfc4c754934d9cc8e
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stderr]   60:     0x5608b4e981fd - __rust_try
[INFO] [stderr]   61:     0x5608b4e96993 - std::panicking::try::h4cb1e85f29c26a10
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stderr]   62:     0x5608b4e90052 - std::panic::catch_unwind::haf5a7b01068a3694
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stderr]   63:     0x5608b4e89fa1 - std::thread::Builder::spawn_unchecked::{{closure}}::hfbc5c3fa6a3b3fce
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:463
[INFO] [stderr]   64:     0x5608b4e8a3df - core::ops::function::FnOnce::call_once{{vtable.shim}}::hcc0a1cda38e288b1
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stderr]   65:     0x5608b4efdd1a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd4d30e37db281e8f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   66:     0x5608b4efdd1a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h019185a215ba16e4
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   67:     0x5608b4efdd1a - std::sys::unix::thread::Thread::new::thread_start::h33c6d7cf25f9291f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys/unix/thread.rs:87
[INFO] [stderr]   68:     0x7f6257d0d609 - start_thread
[INFO] [stderr]   69:     0x7f6257f98103 - clone
[INFO] [stderr]   70:                0x0 - <unknown>
[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-afc1bc51f7e53e3d` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "8ba6c663c04cdf587e6ae90abe5032500cdfac48e4abfacdd93140f8f39c6761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ba6c663c04cdf587e6ae90abe5032500cdfac48e4abfacdd93140f8f39c6761", kill_on_drop: false }`
[INFO] [stdout] 8ba6c663c04cdf587e6ae90abe5032500cdfac48e4abfacdd93140f8f39c6761
