[INFO] cloning repository https://github.com/JoshuaRadin37/Tic-Tac-Toe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoshuaRadin37/Tic-Tac-Toe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshuaRadin37%2FTic-Tac-Toe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshuaRadin37%2FTic-Tac-Toe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b70def198c3d108619bbc349d17378518b4df7e
[INFO] documenting JoshuaRadin37/Tic-Tac-Toe against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshuaRadin37%2FTic-Tac-Toe" "/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/JoshuaRadin37/Tic-Tac-Toe on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JoshuaRadin37/Tic-Tac-Toe
[INFO] finished tweaking git repo https://github.com/JoshuaRadin37/Tic-Tac-Toe
[INFO] tweaked toml for git repo https://github.com/JoshuaRadin37/Tic-Tac-Toe written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/JoshuaRadin37/Tic-Tac-Toe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47b36290a6e3e3f59dafc284649a7641985b94d6b28d450a5b5d7d9fa340d775
[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" "47b36290a6e3e3f59dafc284649a7641985b94d6b28d450a5b5d7d9fa340d775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47b36290a6e3e3f59dafc284649a7641985b94d6b28d450a5b5d7d9fa340d775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47b36290a6e3e3f59dafc284649a7641985b94d6b28d450a5b5d7d9fa340d775", kill_on_drop: false }`
[INFO] [stdout] 47b36290a6e3e3f59dafc284649a7641985b94d6b28d450a5b5d7d9fa340d775
[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" "RUSTDOCFLAGS=--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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4eaefee992f0415e6b12edadfd1ba3b955eff741050cfc45fb17cbc095b880e0
[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" "4eaefee992f0415e6b12edadfd1ba3b955eff741050cfc45fb17cbc095b880e0", kill_on_drop: false }`
[INFO] [stderr]     Checking input-event-codes v0.2.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]    Compiling device_query v0.2.4
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking x11 v2.18.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking signal-hook v0.1.15
[INFO] [stderr]     Checking crossterm v0.17.4
[INFO] [stderr]  Documenting tic_tac_toe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `(`, `.`, `::`, `;`, `?`, `}`, or an operator, found `!`
[INFO] [stdout]    --> src/game/board.rs:200:20
[INFO] [stdout]     |
[INFO] [stdout] 200 |             writeln!(f, "")?;
[INFO] [stdout]     |                    ^ expected one of 7 possible tokens
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `tic_tac_toe`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name tic_tac_toe src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-6cce5fa7b56b8580.rmeta --extern device_query=/opt/rustwide/target/debug/deps/libdevice_query-1c9ff3b4bb91d9f1.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-35a3ef9027fc6b84.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "4eaefee992f0415e6b12edadfd1ba3b955eff741050cfc45fb17cbc095b880e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eaefee992f0415e6b12edadfd1ba3b955eff741050cfc45fb17cbc095b880e0", kill_on_drop: false }`
[INFO] [stdout] 4eaefee992f0415e6b12edadfd1ba3b955eff741050cfc45fb17cbc095b880e0