[INFO] fetching crate mnist 0.5.0...
[INFO] documenting mnist-0.5.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate mnist 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mnist 0.5.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mnist 0.5.0
[INFO] finished tweaking crates.io crate mnist 0.5.0
[INFO] tweaked toml for crates.io crate mnist 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate mnist 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c0b40a30bdc4c4bcf72a5f5e17d841fdc97672252bb815726f695404a8d3b97
[INFO] running `Command { std: "docker" "start" "-a" "4c0b40a30bdc4c4bcf72a5f5e17d841fdc97672252bb815726f695404a8d3b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c0b40a30bdc4c4bcf72a5f5e17d841fdc97672252bb815726f695404a8d3b97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c0b40a30bdc4c4bcf72a5f5e17d841fdc97672252bb815726f695404a8d3b97", kill_on_drop: false }`
[INFO] [stdout] 4c0b40a30bdc4c4bcf72a5f5e17d841fdc97672252bb815726f695404a8d3b97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ec77a7bb9d167d316b98e961e5497adc6926f7ef155ccedf688e9b8ace57a6e
[INFO] running `Command { std: "docker" "start" "-a" "7ec77a7bb9d167d316b98e961e5497adc6926f7ef155ccedf688e9b8ace57a6e", kill_on_drop: false }`
[INFO] [stderr]  Documenting mnist v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `here`
[INFO] [stdout]   --> src/lib.rs:16:77
[INFO] [stdout]    |
[INFO] [stdout] 16 | //! The MNIST data set is a collection of four gzip files and can be found [here]
[INFO] [stdout]    |                                                                             ^^^^ no item named `here` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/lib.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | //! (http://yann.lecun.com/exdb/mnist/). There is one file for each of the following: the training
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<http://yann.lecun.com/exdb/mnist/>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "7ec77a7bb9d167d316b98e961e5497adc6926f7ef155ccedf688e9b8ace57a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ec77a7bb9d167d316b98e961e5497adc6926f7ef155ccedf688e9b8ace57a6e", kill_on_drop: false }`
[INFO] [stdout] 7ec77a7bb9d167d316b98e961e5497adc6926f7ef155ccedf688e9b8ace57a6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] faf172bb157da39ffac29009da54bf33f9a651769f2c8d5cfc79e3b3933c4161
[INFO] running `Command { std: "docker" "start" "-a" "faf172bb157da39ffac29009da54bf33f9a651769f2c8d5cfc79e3b3933c4161", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]  Documenting mnist v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `here`
[INFO] [stdout]   --> src/lib.rs:16:77
[INFO] [stdout]    |
[INFO] [stdout] 16 | //! The MNIST data set is a collection of four gzip files and can be found [here]
[INFO] [stdout]    |                                                                             ^^^^ no item named `here` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]   --> src/lib.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | //! (http://yann.lecun.com/exdb/mnist/). There is one file for each of the following: the training
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<http://yann.lecun.com/exdb/mnist/>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]    = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "faf172bb157da39ffac29009da54bf33f9a651769f2c8d5cfc79e3b3933c4161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faf172bb157da39ffac29009da54bf33f9a651769f2c8d5cfc79e3b3933c4161", kill_on_drop: false }`
[INFO] [stdout] faf172bb157da39ffac29009da54bf33f9a651769f2c8d5cfc79e3b3933c4161