[INFO] cloning repository https://github.com/nowakf/snakeskin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nowakf/snakeskin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnowakf%2Fsnakeskin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnowakf%2Fsnakeskin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15704915fab5cea69a9fa8647dbaa0e09b1435d6
[INFO] documenting nowakf/snakeskin against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnowakf%2Fsnakeskin" "/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/nowakf/snakeskin on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nowakf/snakeskin
[INFO] finished tweaking git repo https://github.com/nowakf/snakeskin
[INFO] tweaked toml for git repo https://github.com/nowakf/snakeskin written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/nowakf/snakeskin already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 695356da4f60186ff61fbe2c6fd0d27e810b425da9bfaf66fe13261a50b9b63f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "695356da4f60186ff61fbe2c6fd0d27e810b425da9bfaf66fe13261a50b9b63f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "695356da4f60186ff61fbe2c6fd0d27e810b425da9bfaf66fe13261a50b9b63f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "695356da4f60186ff61fbe2c6fd0d27e810b425da9bfaf66fe13261a50b9b63f", kill_on_drop: false }`
[INFO] [stdout] 695356da4f60186ff61fbe2c6fd0d27e810b425da9bfaf66fe13261a50b9b63f
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a5d2b755a4869d1d5a1a3d480e1e7d1ba680a99a8ebbe66b89662c99373840bf
[INFO] running `Command { std: "docker" "start" "-a" "a5d2b755a4869d1d5a1a3d480e1e7d1ba680a99a8ebbe66b89662c99373840bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking deflate v0.8.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking png v0.16.1
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking image v0.23.2
[INFO] [stderr]  Documenting entropy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found keyword `let`
[INFO] [stdout]   --> src/main.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn main() -> Result<()> {Q
[INFO] [stdout]    |                           - expected one of 8 possible tokens
[INFO] [stdout] 87 |     //parse command-line arguments
[INFO] [stdout] 88 |     let args : Vec<String> = std::env::args().collect();
[INFO] [stdout]    |     ^^^ unexpected token
[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] [stderr] error: Could not document `entropy`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name entropy src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-8f6ce0f93ec1bcae.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-a6b8a086828f95b1.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-f9837678421e1890.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-10ec776f077887b0.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "a5d2b755a4869d1d5a1a3d480e1e7d1ba680a99a8ebbe66b89662c99373840bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5d2b755a4869d1d5a1a3d480e1e7d1ba680a99a8ebbe66b89662c99373840bf", kill_on_drop: false }`
[INFO] [stdout] a5d2b755a4869d1d5a1a3d480e1e7d1ba680a99a8ebbe66b89662c99373840bf