[INFO] cloning repository https://github.com/lsaether/merkle-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lsaether/merkle-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsaether%2Fmerkle-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsaether%2Fmerkle-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 776dfde8ee81482edc3b2247a8658aabdddd3d61
[INFO] documenting lsaether/merkle-tree against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsaether%2Fmerkle-tree" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lsaether/merkle-tree 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 git repo https://github.com/lsaether/merkle-tree
[INFO] finished tweaking git repo https://github.com/lsaether/merkle-tree
[INFO] tweaked toml for git repo https://github.com/lsaether/merkle-tree written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/lsaether/merkle-tree 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 6b698819d3d6d668e0b8cae68fa32e91e3d78884fef55216941d5917a25c8785
[INFO] running `Command { std: "docker" "start" "-a" "6b698819d3d6d668e0b8cae68fa32e91e3d78884fef55216941d5917a25c8785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b698819d3d6d668e0b8cae68fa32e91e3d78884fef55216941d5917a25c8785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b698819d3d6d668e0b8cae68fa32e91e3d78884fef55216941d5917a25c8785", kill_on_drop: false }`
[INFO] [stdout] 6b698819d3d6d668e0b8cae68fa32e91e3d78884fef55216941d5917a25c8785
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 5e9b016dd01dc2d5ea7e578bab7fceed3ba60bd79ba7a03f6d38a806364ef4b3
[INFO] running `Command { std: "docker" "start" "-a" "5e9b016dd01dc2d5ea7e578bab7fceed3ba60bd79ba7a03f6d38a806364ef4b3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]     Checking tiny-keccak v1.3.1
[INFO] [stderr]  Documenting merkle-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0585]: found a documentation comment that doesn't document anything
[INFO] [stdout]   --> src/merkletree.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         /// TODO
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: doc comments must come before what they document, maybe a comment was intended with `//`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `tiny_keccak`
[INFO] [stdout]  --> src/merkletree.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tiny_keccak::Keccak;
[INFO] [stdout]   |     ^^^^^^^^^^^ help: a similar path exists: `self::tiny_keccak`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0585.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `merkle-tree`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name merkle_tree src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8666e1ac411c6733 -L dependency=/opt/rustwide/target/debug/deps --extern hex=/opt/rustwide/target/debug/deps/libhex-78d489f3463ba0f3.rmeta --extern tiny_keccak=/opt/rustwide/target/debug/deps/libtiny_keccak-00ccba3c6fa6b67a.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5e9b016dd01dc2d5ea7e578bab7fceed3ba60bd79ba7a03f6d38a806364ef4b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e9b016dd01dc2d5ea7e578bab7fceed3ba60bd79ba7a03f6d38a806364ef4b3", kill_on_drop: false }`
[INFO] [stdout] 5e9b016dd01dc2d5ea7e578bab7fceed3ba60bd79ba7a03f6d38a806364ef4b3