[INFO] cloning repository https://github.com/ToF-/rust_word_ladder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ToF-/rust_word_ladder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToF-%2Frust_word_ladder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToF-%2Frust_word_ladder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76fac564a7b0a6d3cd318adb2782cf7837df5771
[INFO] documenting ToF-/rust_word_ladder against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToF-%2Frust_word_ladder" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ToF-/rust_word_ladder on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ToF-/rust_word_ladder
[INFO] finished tweaking git repo https://github.com/ToF-/rust_word_ladder
[INFO] tweaked toml for git repo https://github.com/ToF-/rust_word_ladder written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ToF-/rust_word_ladder 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bb2b2eb70a6203a5018139a0214164a3e3b0805bdbd1eab5df75931d04930f5
[INFO] running `Command { std: "docker" "start" "-a" "1bb2b2eb70a6203a5018139a0214164a3e3b0805bdbd1eab5df75931d04930f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bb2b2eb70a6203a5018139a0214164a3e3b0805bdbd1eab5df75931d04930f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bb2b2eb70a6203a5018139a0214164a3e3b0805bdbd1eab5df75931d04930f5", kill_on_drop: false }`
[INFO] [stdout] 1bb2b2eb70a6203a5018139a0214164a3e3b0805bdbd1eab5df75931d04930f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e2fcab037bff1864ed1bfc62e5614d87d164bf8d6e9f1f230d13a111923daf5
[INFO] running `Command { std: "docker" "start" "-a" "0e2fcab037bff1864ed1bfc62e5614d87d164bf8d6e9f1f230d13a111923daf5", kill_on_drop: false }`
[INFO] [stderr]  Documenting rust_word_ladder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `structopt`
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate structopt;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `StructOpt`
[INFO] [stdout]   --> src/main.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Debug, StructOpt)]
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]   --> src/main.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[structopt(name = "word_ladder", about = "Finding ladders between words.")]
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `structopt` is imported here, but it is an unresolved item, not an attribute
[INFO] [stdout]   --> src/main.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | extern crate structopt;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `structopt` in this scope
[INFO] [stdout]   --> src/main.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 |     #[structopt(parse(from_os_str))]
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `structopt` is imported here, but it is an unresolved item, not an attribute
[INFO] [stdout]   --> src/main.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | extern crate structopt;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rust_word_ladder`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --crate-type bin --crate-name rust_word_ladder src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=9a6beed8d0447ffa -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0e2fcab037bff1864ed1bfc62e5614d87d164bf8d6e9f1f230d13a111923daf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e2fcab037bff1864ed1bfc62e5614d87d164bf8d6e9f1f230d13a111923daf5", kill_on_drop: false }`
[INFO] [stdout] 0e2fcab037bff1864ed1bfc62e5614d87d164bf8d6e9f1f230d13a111923daf5
