[INFO] cloning repository https://github.com/treuherz/parcom
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/treuherz/parcom" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftreuherz%2Fparcom", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftreuherz%2Fparcom'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d656111a54de5678833f747ffb05df6eababa05
[INFO] documenting treuherz/parcom 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%2Ftreuherz%2Fparcom" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/treuherz/parcom 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/treuherz/parcom
[INFO] finished tweaking git repo https://github.com/treuherz/parcom
[INFO] tweaked toml for git repo https://github.com/treuherz/parcom written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/treuherz/parcom 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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] a7085b47c07d0614535520618b691481fc07c40a8753d8abe77fba5c5553cbf0
[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" "a7085b47c07d0614535520618b691481fc07c40a8753d8abe77fba5c5553cbf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7085b47c07d0614535520618b691481fc07c40a8753d8abe77fba5c5553cbf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7085b47c07d0614535520618b691481fc07c40a8753d8abe77fba5c5553cbf0", kill_on_drop: false }`
[INFO] [stdout] a7085b47c07d0614535520618b691481fc07c40a8753d8abe77fba5c5553cbf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cdc70eb02e94287c1899f496e5366c86ce1f5aabb08a6650f3f552ec1acd3848
[INFO] running `Command { std: "docker" "start" "-a" "cdc70eb02e94287c1899f496e5366c86ce1f5aabb08a6650f3f552ec1acd3848", kill_on_drop: false }`
[INFO] [stderr]  Documenting parcom v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `,`
[INFO] [stdout]    --> src/lib.rs:317:56
[INFO] [stdout]     |
[INFO] [stdout] 316 |         open_element().and_then(|el| {
[INFO] [stdout]     |                                      - unclosed delimiter
[INFO] [stdout] 317 |         left(element().zero_or_more(), close_element()),
[INFO] [stdout]     |                                                        ^ help: `}` may belong here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `,`
[INFO] [stdout]    --> src/lib.rs:317:56
[INFO] [stdout]     |
[INFO] [stdout] 317 |         left(element().zero_or_more(), close_element()),
[INFO] [stdout]     |                                                        ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: mismatched closing delimiter: `}`
[INFO] [stdout]    --> src/lib.rs:319:1
[INFO] [stdout]     |
[INFO] [stdout] 314 | fn parent_element<'a>() -> impl Parser<'a, Element> {
[INFO] [stdout]     |                                                     - closing delimiter possibly meant for this
[INFO] [stdout] 315 |     pair(
[INFO] [stdout]     |         - unclosed delimiter
[INFO] [stdout] ...
[INFO] [stdout] 319 | }
[INFO] [stdout]     | ^ mismatched closing delimiter
[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 `parcom`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name parcom 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 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "cdc70eb02e94287c1899f496e5366c86ce1f5aabb08a6650f3f552ec1acd3848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdc70eb02e94287c1899f496e5366c86ce1f5aabb08a6650f3f552ec1acd3848", kill_on_drop: false }`
[INFO] [stdout] cdc70eb02e94287c1899f496e5366c86ce1f5aabb08a6650f3f552ec1acd3848