[INFO] cloning repository https://github.com/rettgerst/exercism-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rettgerst/exercism-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frettgerst%2Fexercism-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frettgerst%2Fexercism-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc56769adf16872479dcd437e9d43cf3396652d3
[INFO] documenting rettgerst/exercism-rust against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frettgerst%2Fexercism-rust" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rettgerst/exercism-rust on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rettgerst/exercism-rust
[INFO] finished tweaking git repo https://github.com/rettgerst/exercism-rust
[INFO] tweaked toml for git repo https://github.com/rettgerst/exercism-rust written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/rettgerst/exercism-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6608b5bfd6ac73962cfee2253cba9d8ad1e699b455d1ac353d4bf1b3a9e77e6c
[INFO] running `Command { std: "docker" "start" "-a" "6608b5bfd6ac73962cfee2253cba9d8ad1e699b455d1ac353d4bf1b3a9e77e6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6608b5bfd6ac73962cfee2253cba9d8ad1e699b455d1ac353d4bf1b3a9e77e6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6608b5bfd6ac73962cfee2253cba9d8ad1e699b455d1ac353d4bf1b3a9e77e6c", kill_on_drop: false }`
[INFO] [stdout] 6608b5bfd6ac73962cfee2253cba9d8ad1e699b455d1ac353d4bf1b3a9e77e6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0780c661e6642669f4c677429460ad007d03c147f281a46e5ca853bd48e0e99
[INFO] running `Command { std: "docker" "start" "-a" "d0780c661e6642669f4c677429460ad007d03c147f281a46e5ca853bd48e0e99", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]  Documenting prime_factors v1.1.0 (/opt/rustwide/workdir/prime-factors)
[INFO] [stderr]  Documenting matching-brackets v2.0.0 (/opt/rustwide/workdir/matching-brackets)
[INFO] [stderr]  Documenting grains v1.2.0 (/opt/rustwide/workdir/grains)
[INFO] [stderr]  Documenting high-scores v4.0.0 (/opt/rustwide/workdir/high-scores)
[INFO] [stderr]  Documenting proverb v1.1.0 (/opt/rustwide/workdir/proverb)
[INFO] [stderr]  Documenting collatz_conjecture v1.2.1 (/opt/rustwide/workdir/collatz-conjecture)
[INFO] [stderr]  Documenting difference-of-squares v1.2.0 (/opt/rustwide/workdir/difference-of-squares)
[INFO] [stderr]  Documenting hello-world v1.1.0 (/opt/rustwide/workdir/hello-world)
[INFO] [stderr]  Documenting leap v1.6.0 (/opt/rustwide/workdir/leap)
[INFO] [stderr]  Documenting bob v1.6.0 (/opt/rustwide/workdir/bob)
[INFO] [stderr]  Documenting beer-song v0.0.0 (/opt/rustwide/workdir/beer-song)
[INFO] [stderr]  Documenting series v0.1.0 (/opt/rustwide/workdir/series)
[INFO] [stderr]  Documenting armstrong_numbers v1.1.0 (/opt/rustwide/workdir/armstrong-numbers)
[INFO] [stderr]  Documenting nth_prime v2.1.0 (/opt/rustwide/workdir/nth-prime)
[INFO] [stderr]  Documenting raindrops v1.1.0 (/opt/rustwide/workdir/raindrops)
[INFO] [stderr]  Documenting diffie-hellman v0.1.0 (/opt/rustwide/workdir/diffie-hellman)
[INFO] [stderr]  Documenting sum-of-multiples v1.5.0 (/opt/rustwide/workdir/sum-of-multiples)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr] error: could not document `prime_factors`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name prime_factors prime-factors/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=cdbf15880cf93208 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 1.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not document `diffie-hellman`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name diffie_hellman diffie-hellman/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f51dd32f4c6f6ba4 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `grains`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name grains grains/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f00033609a5404ea -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 1.2.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `collatz_conjecture`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name collatz_conjecture collatz-conjecture/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ffbda8528b6b4085 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 1.2.1` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `armstrong_numbers`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name armstrong_numbers armstrong-numbers/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=be4bd9d2a65f7e1b -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 1.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `beer-song`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name beer_song beer-song/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=1ee9d3d21e71e86c -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.0.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `series`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name series series/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=edb9fc3239001a0e -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "d0780c661e6642669f4c677429460ad007d03c147f281a46e5ca853bd48e0e99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0780c661e6642669f4c677429460ad007d03c147f281a46e5ca853bd48e0e99", kill_on_drop: false }`
[INFO] [stdout] d0780c661e6642669f4c677429460ad007d03c147f281a46e5ca853bd48e0e99