[INFO] cloning repository https://github.com/monarrk/rush
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/monarrk/rush" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmonarrk%2Frush", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmonarrk%2Frush'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c7285073e8093756b78b3d5b614df4bff235874
[INFO] documenting monarrk/rush against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmonarrk%2Frush" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/monarrk/rush on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/monarrk/rush
[INFO] finished tweaking git repo https://github.com/monarrk/rush
[INFO] tweaked toml for git repo https://github.com/monarrk/rush written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/monarrk/rush already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbe2bca3bb131cbddf24591ad8024076bb36d14c18f95ca22014c042abc96b64
[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" "dbe2bca3bb131cbddf24591ad8024076bb36d14c18f95ca22014c042abc96b64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbe2bca3bb131cbddf24591ad8024076bb36d14c18f95ca22014c042abc96b64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbe2bca3bb131cbddf24591ad8024076bb36d14c18f95ca22014c042abc96b64", kill_on_drop: false }`
[INFO] [stdout] dbe2bca3bb131cbddf24591ad8024076bb36d14c18f95ca22014c042abc96b64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27e145b2d2e5d2dcc9a7dace31835d7243b411aed21e8a0181a7d48cd7331e0e
[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" "27e145b2d2e5d2dcc9a7dace31835d7243b411aed21e8a0181a7d48cd7331e0e", kill_on_drop: false }`
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]  Documenting rush v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected expression, found reserved identifier `_`
[INFO] [stdout]   --> src/main.rs:39:24
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     Ok(_) => {},
[INFO] [stdout]    |                        ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `=>`
[INFO] [stdout]   --> src/main.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     Ok(_) => {},
[INFO] [stdout]    |                           ^^ expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `.`, `?`, `{`, or an operator, found `;`
[INFO] [stdout]   --> src/main.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 match res = {
[INFO] [stdout]    |                 -----
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 while parsing this match expression
[INFO] [stdout]    |                 help: try removing this `match`
[INFO] [stdout] ...
[INFO] [stdout] 41 |                 };
[INFO] [stdout]    |                  ^ expected one of `.`, `?`, `{`, or an operator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `rush`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name rush 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 ctrlc=/opt/rustwide/target/debug/deps/libctrlc-da36aa18bfa4d71d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "27e145b2d2e5d2dcc9a7dace31835d7243b411aed21e8a0181a7d48cd7331e0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27e145b2d2e5d2dcc9a7dace31835d7243b411aed21e8a0181a7d48cd7331e0e", kill_on_drop: false }`
[INFO] [stdout] 27e145b2d2e5d2dcc9a7dace31835d7243b411aed21e8a0181a7d48cd7331e0e