[INFO] cloning repository https://github.com/Kyllingene/chessboard
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kyllingene/chessboard" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyllingene%2Fchessboard", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyllingene%2Fchessboard'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08eb6be146470ad58e833b25384d13a3d36d299e
[INFO] checking Kyllingene/chessboard against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKyllingene%2Fchessboard" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Kyllingene/chessboard
[INFO] finished tweaking git repo https://github.com/Kyllingene/chessboard
[INFO] tweaked toml for git repo https://github.com/Kyllingene/chessboard written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Kyllingene/chessboard on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Kyllingene/chessboard already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60f05f5af0605b0bc1b2ba958a59ce9954fb0bc6daf2e443f058b22903558990
[INFO] running `Command { std: "docker" "start" "-a" "60f05f5af0605b0bc1b2ba958a59ce9954fb0bc6daf2e443f058b22903558990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60f05f5af0605b0bc1b2ba958a59ce9954fb0bc6daf2e443f058b22903558990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60f05f5af0605b0bc1b2ba958a59ce9954fb0bc6daf2e443f058b22903558990", kill_on_drop: false }`
[INFO] [stdout] 60f05f5af0605b0bc1b2ba958a59ce9954fb0bc6daf2e443f058b22903558990
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84d155083ab31de735a65eae1a9f8dbd516722c3b1b313b81bdf30f2e5530f4a
[INFO] running `Command { std: "docker" "start" "-a" "84d155083ab31de735a65eae1a9f8dbd516722c3b1b313b81bdf30f2e5530f4a", kill_on_drop: false }`
[INFO] [stderr]     Checking fen v0.1.0
[INFO] [stderr]     Checking chessboard v1.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Board, Infallible>
[INFO] [stdout]     --> src/lib.rs:1113:21
[INFO] [stdout]      |
[INFO] [stdout] 1113 |         let board = Board::try_from(fen).unwrap();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chessboard` (lib test) due to 3 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<Board, Infallible>
[INFO] [stdout]     --> src/lib.rs:1123:21
[INFO] [stdout]      |
[INFO] [stdout] 1123 |         let board = Board::try_from(fen).unwrap();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Board, Infallible>
[INFO] [stdout]     --> src/lib.rs:1130:21
[INFO] [stdout]      |
[INFO] [stdout] 1130 |         let board = Board::try_from(fen).unwrap();
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "84d155083ab31de735a65eae1a9f8dbd516722c3b1b313b81bdf30f2e5530f4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84d155083ab31de735a65eae1a9f8dbd516722c3b1b313b81bdf30f2e5530f4a", kill_on_drop: false }`
[INFO] [stdout] 84d155083ab31de735a65eae1a9f8dbd516722c3b1b313b81bdf30f2e5530f4a
