[INFO] cloning repository https://github.com/nthieu173/wordle-bot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nthieu173/wordle-bot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnthieu173%2Fwordle-bot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnthieu173%2Fwordle-bot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd1f099e28a1e229557d612493b4736348e3a796
[INFO] checking nthieu173/wordle-bot 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%2Fnthieu173%2Fwordle-bot" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nthieu173/wordle-bot
[INFO] finished tweaking git repo https://github.com/nthieu173/wordle-bot
[INFO] tweaked toml for git repo https://github.com/nthieu173/wordle-bot written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nthieu173/wordle-bot 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/nthieu173/wordle-bot 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] [stderr] warning: unused manifest key: package.about
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7c97b442895f1eab70a340bc0b1fc71fa8b44bbafbdb5e2a270112f5ac82bc31
[INFO] running `Command { std: "docker" "start" "-a" "7c97b442895f1eab70a340bc0b1fc71fa8b44bbafbdb5e2a270112f5ac82bc31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c97b442895f1eab70a340bc0b1fc71fa8b44bbafbdb5e2a270112f5ac82bc31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c97b442895f1eab70a340bc0b1fc71fa8b44bbafbdb5e2a270112f5ac82bc31", kill_on_drop: false }`
[INFO] [stdout] 7c97b442895f1eab70a340bc0b1fc71fa8b44bbafbdb5e2a270112f5ac82bc31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 57bf0b1dc013c5902647846094bd7460f77fcd050af0dcd68675eb5f396d6d27
[INFO] running `Command { std: "docker" "start" "-a" "57bf0b1dc013c5902647846094bd7460f77fcd050af0dcd68675eb5f396d6d27", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.about
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.14
[INFO] [stderr]     Checking clap v3.0.14
[INFO] [stderr]     Checking wordle-bot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `wordle-bot` (bin "wordle-bot" test) due to 4 previous errors; 1 warning emitted
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[clap(
[INFO] [stdout] 17 | |         short,
[INFO] [stdout] 18 | |         long,
[INFO] [stdout] 19 | |         default_value = "./official.txt",//"/usr/share/dict/words",
[INFO] [stdout] 20 | |         help = "Path to word list"
[INFO] [stdout] 21 | |     )]
[INFO] [stdout] 22 | |     dict: PathBuf,
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     #[clap(short, long, default_value = "./cache.txt", help = "Solution cache")]
[INFO] [stdout] 24 | |     cache: PathBuf,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | /     #[clap(
[INFO] [stdout] 26 | |         short,
[INFO] [stdout] 27 | |         long,
[INFO] [stdout] 28 | |         default_value = "./state",
[INFO] [stdout] 29 | |         help = "Path to state space folder"
[INFO] [stdout] 30 | |     )]
[INFO] [stdout] 31 | |     state_space: PathBuf,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | /     #[clap(help = "Guesses so far")]
[INFO] [stdout] 46 | |     guesses: Vec<String>,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/mcts.rs:319:9
[INFO] [stdout]     |
[INFO] [stdout] 319 |         drop(current_node);
[INFO] [stdout]     |         ^^^^^------------^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&Node`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 319 -         drop(current_node);
[INFO] [stdout] 319 +         let _ = current_node;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[clap(
[INFO] [stdout] 17 | |         short,
[INFO] [stdout] 18 | |         long,
[INFO] [stdout] 19 | |         default_value = "./official.txt",//"/usr/share/dict/words",
[INFO] [stdout] 20 | |         help = "Path to word list"
[INFO] [stdout] 21 | |     )]
[INFO] [stdout] 22 | |     dict: PathBuf,
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     #[clap(short, long, default_value = "./cache.txt", help = "Solution cache")]
[INFO] [stdout] 24 | |     cache: PathBuf,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | /     #[clap(
[INFO] [stdout] 26 | |         short,
[INFO] [stdout] 27 | |         long,
[INFO] [stdout] 28 | |         default_value = "./state",
[INFO] [stdout] 29 | |         help = "Path to state space folder"
[INFO] [stdout] 30 | |     )]
[INFO] [stdout] 31 | |     state_space: PathBuf,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | /     #[clap(help = "Guesses so far")]
[INFO] [stdout] 46 | |     guesses: Vec<String>,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/mcts.rs:319:9
[INFO] [stdout]     |
[INFO] [stdout] 319 |         drop(current_node);
[INFO] [stdout]     |         ^^^^^------------^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              argument has type `&Node`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 319 -         drop(current_node);
[INFO] [stdout] 319 +         let _ = current_node;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wordle-bot` (bin "wordle-bot") due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "57bf0b1dc013c5902647846094bd7460f77fcd050af0dcd68675eb5f396d6d27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57bf0b1dc013c5902647846094bd7460f77fcd050af0dcd68675eb5f396d6d27", kill_on_drop: false }`
[INFO] [stdout] 57bf0b1dc013c5902647846094bd7460f77fcd050af0dcd68675eb5f396d6d27
