[INFO] cloning repository https://github.com/sinnerschrader/rust-exercism-cubicle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sinnerschrader/rust-exercism-cubicle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnerschrader%2Frust-exercism-cubicle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnerschrader%2Frust-exercism-cubicle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7206a04271a81f758533b7431ae38a0466340ca7
[INFO] documenting sinnerschrader/rust-exercism-cubicle against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnerschrader%2Frust-exercism-cubicle" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinnerschrader/rust-exercism-cubicle on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sinnerschrader/rust-exercism-cubicle
[INFO] finished tweaking git repo https://github.com/sinnerschrader/rust-exercism-cubicle
[INFO] tweaked toml for git repo https://github.com/sinnerschrader/rust-exercism-cubicle written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/sinnerschrader/rust-exercism-cubicle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e489b45900a8facee2fc8b0d1d578d9a6e599befe10902a09a05fdc0b413ef55
[INFO] running `Command { std: "docker" "start" "-a" "e489b45900a8facee2fc8b0d1d578d9a6e599befe10902a09a05fdc0b413ef55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e489b45900a8facee2fc8b0d1d578d9a6e599befe10902a09a05fdc0b413ef55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e489b45900a8facee2fc8b0d1d578d9a6e599befe10902a09a05fdc0b413ef55", kill_on_drop: false }`
[INFO] [stdout] e489b45900a8facee2fc8b0d1d578d9a6e599befe10902a09a05fdc0b413ef55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa55a891c09ad0d6e8eaee2108dcbf4ec635433541e0704e62448b5474ed5665
[INFO] running `Command { std: "docker" "start" "-a" "fa55a891c09ad0d6e8eaee2108dcbf4ec635433541e0704e62448b5474ed5665", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling cc v1.0.32
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]  Documenting book_store v1.3.0 (/opt/rustwide/workdir/exercises/book-store)
[INFO] [stderr]  Documenting spiral-matrix v1.1.0 (/opt/rustwide/workdir/exercises/spiral-matrix)
[INFO] [stderr]  Documenting pascals-triangle v1.5.0 (/opt/rustwide/workdir/exercises/pascals-triangle)
[INFO] [stderr]  Documenting minesweeper v1.1.0 (/opt/rustwide/workdir/exercises/minesweeper)
[INFO] [stderr]  Documenting difference-of-squares v1.2.0 (/opt/rustwide/workdir/exercises/difference-of-squares)
[INFO] [stderr]  Documenting grade-school v0.0.0 (/opt/rustwide/workdir/exercises/grade-school)
[INFO] [stderr]  Documenting run-length-encoding v1.1.0 (/opt/rustwide/workdir/exercises/run-length-encoding)
[INFO] [stderr]  Documenting nucleotide_codons v0.1.0 (/opt/rustwide/workdir/exercises/nucleotide-codons)
[INFO] [stderr]  Documenting atbash-cipher v1.1.0 (/opt/rustwide/workdir/exercises/atbash-cipher)
[INFO] [stderr]  Documenting forth v1.7.0 (/opt/rustwide/workdir/exercises/forth)
[INFO] [stderr]  Documenting hexadecimal v0.0.0 (/opt/rustwide/workdir/exercises/hexadecimal)
[INFO] [stderr]  Documenting sieve v1.1.0 (/opt/rustwide/workdir/exercises/sieve)
[INFO] [stderr]  Documenting crypto-square v0.1.0 (/opt/rustwide/workdir/exercises/crypto-square)
[INFO] [stderr]  Documenting simple_linked_list v0.1.0 (/opt/rustwide/workdir/exercises/simple-linked-list)
[INFO] [stderr]  Documenting leap v1.4.0 (/opt/rustwide/workdir/exercises/leap)
[INFO] [stderr]  Documenting pangram v0.0.0 (/opt/rustwide/workdir/exercises/pangram)
[INFO] [stderr]  Documenting etl v1.0.0 (/opt/rustwide/workdir/exercises/etl)
[INFO] [stderr]  Documenting binary-search v1.3.0 (/opt/rustwide/workdir/exercises/binary-search)
[INFO] [stderr]  Documenting prime_factors v1.1.0 (/opt/rustwide/workdir/exercises/prime-factors)
[INFO] [stderr]  Documenting triangle v0.0.0 (/opt/rustwide/workdir/exercises/triangle)
[INFO] [stderr]  Documenting palindrome-products v1.1.0 (/opt/rustwide/workdir/exercises/palindrome-products)
[INFO] [stderr]  Documenting nth_prime v2.1.0 (/opt/rustwide/workdir/exercises/nth-prime)
[INFO] [stderr]  Documenting paasio v0.0.0 (/opt/rustwide/workdir/exercises/paasio)
[INFO] [stderr]  Documenting word-count v1.2.0 (/opt/rustwide/workdir/exercises/word-count)
[INFO] [stderr]  Documenting series v0.1.0 (/opt/rustwide/workdir/exercises/series)
[INFO] [stderr]  Documenting rotational-cipher v1.0.0 (/opt/rustwide/workdir/exercises/rotational-cipher)
[INFO] [stderr]  Documenting phone-number v1.6.1 (/opt/rustwide/workdir/exercises/phone-number)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> exercises/nth-prime/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `nth_prime`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name nth_prime exercises/nth-prime/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 2.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fa55a891c09ad0d6e8eaee2108dcbf4ec635433541e0704e62448b5474ed5665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa55a891c09ad0d6e8eaee2108dcbf4ec635433541e0704e62448b5474ed5665", kill_on_drop: false }`
[INFO] [stdout] fa55a891c09ad0d6e8eaee2108dcbf4ec635433541e0704e62448b5474ed5665
