[INFO] cloning repository https://github.com/TidyMaze/Twixt-PP
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TidyMaze/Twixt-PP" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTidyMaze%2FTwixt-PP", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTidyMaze%2FTwixt-PP'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c6c117fb81bc958ce7f323de8d101080a418739
[INFO] checking TidyMaze/Twixt-PP against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTidyMaze%2FTwixt-PP" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TidyMaze/Twixt-PP on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TidyMaze/Twixt-PP
[INFO] finished tweaking git repo https://github.com/TidyMaze/Twixt-PP
[INFO] tweaked toml for git repo https://github.com/TidyMaze/Twixt-PP written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/TidyMaze/Twixt-PP already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f5e58807b876ca450b6b5929943437a20f3a980091cebdf5bfacc7b068afbce
[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" "6f5e58807b876ca450b6b5929943437a20f3a980091cebdf5bfacc7b068afbce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f5e58807b876ca450b6b5929943437a20f3a980091cebdf5bfacc7b068afbce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5e58807b876ca450b6b5929943437a20f3a980091cebdf5bfacc7b068afbce", kill_on_drop: false }`
[INFO] [stdout] 6f5e58807b876ca450b6b5929943437a20f3a980091cebdf5bfacc7b068afbce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b8fd9a4285bffaae5ddf139af32b8c0caafc33fc77c9188ec1ef0201c1e79a9
[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" "4b8fd9a4285bffaae5ddf139af32b8c0caafc33fc77c9188ec1ef0201c1e79a9", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking twixt_pp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `play_action`
[INFO] [stdout]    --> src/main.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn play_action(mut g: Grid, c: Coord, p: u8) -> Grid {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.02s
[INFO] running `Command { std: "docker" "inspect" "4b8fd9a4285bffaae5ddf139af32b8c0caafc33fc77c9188ec1ef0201c1e79a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b8fd9a4285bffaae5ddf139af32b8c0caafc33fc77c9188ec1ef0201c1e79a9", kill_on_drop: false }`
[INFO] [stdout] 4b8fd9a4285bffaae5ddf139af32b8c0caafc33fc77c9188ec1ef0201c1e79a9