[INFO] cloning repository https://github.com/LearningByExample/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningByExample/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningByExample%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningByExample%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8f12937fc940a75c229bd128b517cd1649cb77b
[INFO] documenting LearningByExample/rustlings 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%2FLearningByExample%2Frustlings" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LearningByExample/rustlings 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/LearningByExample/rustlings
[INFO] finished tweaking git repo https://github.com/LearningByExample/rustlings
[INFO] tweaked toml for git repo https://github.com/LearningByExample/rustlings written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LearningByExample/rustlings 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded escargot v0.5.0
[INFO] [stderr]   Downloaded serde v1.0.113
[INFO] [stderr]   Downloaded serde_derive v1.0.113
[INFO] [stderr]   Downloaded serde_json v1.0.55
[INFO] [stderr]   Downloaded syn v1.0.32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 673337f023116d1e5e5036b278a5bff7b31296c93c5a71a8850c3257b0fdfdf4
[INFO] running `Command { std: "docker" "start" "-a" "673337f023116d1e5e5036b278a5bff7b31296c93c5a71a8850c3257b0fdfdf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "673337f023116d1e5e5036b278a5bff7b31296c93c5a71a8850c3257b0fdfdf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "673337f023116d1e5e5036b278a5bff7b31296c93c5a71a8850c3257b0fdfdf4", kill_on_drop: false }`
[INFO] [stdout] 673337f023116d1e5e5036b278a5bff7b31296c93c5a71a8850c3257b0fdfdf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8755a9a91297dce29b1e8fb3198c8278e807774fcc476b7358d211d712ebd921
[INFO] running `Command { std: "docker" "start" "-a" "8755a9a91297dce29b1e8fb3198c8278e807774fcc476b7358d211d712ebd921", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.32
[INFO] [stderr]    Compiling serde_derive v1.0.113
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.113
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling escargot v0.5.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]  Documenting threads_intro v0.1.0 (/opt/rustwide/workdir/Fearless Concurrency/Threads/Intro)
[INFO] [stderr]  Documenting times_two_tests v0.1.0 (/opt/rustwide/workdir/Writing Automated Tests/Tests Test/Times Two Tests)
[INFO] [stderr]  Documenting iterators4 v0.1.0 (/opt/rustwide/workdir/Iterators and Closures/Standard Library Types/Factorial)
[INFO] [stderr]  Documenting variables_intro v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Intro)
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[INFO] [stderr]  Documenting variables3 v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Variables 3)
[INFO] [stderr]  Documenting calculate_price v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables and Functions Test/Calculate Price)
[INFO] [stderr]  Documenting modules_intro v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Modules/Intro)
[INFO] [stderr]  Documenting move_semantics_intro v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/Intro)
[INFO] [stderr]  Documenting references_and_borrowing v0.1.0 (/opt/rustwide/workdir/Understanding Ownership/Move Semantics/References and Borrowing)
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[INFO] [stderr]  Documenting paths_for_referring_to_an_item_in_the_module_tree v0.1.0 (/opt/rustwide/workdir/Modules and Macros/Modules/Paths for Referring to an Item in the Module Tree)
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[INFO] [stderr]  Documenting if_task v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/If/If Task)
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[INFO] [stderr]  Documenting shadowing v0.1.0 (/opt/rustwide/workdir/Common Programming Concepts/Variables/Shadowing)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]  --> Recoverable and Unrecoverable Errors/Error Handling/Matching Result/src/lib.rs:6:78
[INFO] [stdout]   |
[INFO] [stdout] 6 |     /*this is the short way, but you can just match the result of the parse*/;
[INFO] [stdout]   |                                                                              ^ help: remove this semicolon
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting recoverable_errors_with_result v0.1.0 (/opt/rustwide/workdir/Recoverable and Unrecoverable Errors/Error Handling/Recoverable Errors with Result)
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[INFO] [stderr]    Generated /opt/rustwide/target/doc/without_arguments/index.html
[INFO] running `Command { std: "docker" "inspect" "8755a9a91297dce29b1e8fb3198c8278e807774fcc476b7358d211d712ebd921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8755a9a91297dce29b1e8fb3198c8278e807774fcc476b7358d211d712ebd921", kill_on_drop: false }`
[INFO] [stdout] 8755a9a91297dce29b1e8fb3198c8278e807774fcc476b7358d211d712ebd921
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e47faed6bcceecad7aebee3f1d44fe6db858c4cc87c1e9d652febdfd33d6d460
[INFO] running `Command { std: "docker" "start" "-a" "e47faed6bcceecad7aebee3f1d44fe6db858c4cc87c1e9d652febdfd33d6d460", kill_on_drop: false }`
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "e47faed6bcceecad7aebee3f1d44fe6db858c4cc87c1e9d652febdfd33d6d460", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e47faed6bcceecad7aebee3f1d44fe6db858c4cc87c1e9d652febdfd33d6d460", kill_on_drop: false }`
[INFO] [stdout] e47faed6bcceecad7aebee3f1d44fe6db858c4cc87c1e9d652febdfd33d6d460
