[INFO] fetching crate log4rs-rolling-file 0.2.0...
[INFO] documenting log4rs-rolling-file-0.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate log4rs-rolling-file 0.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate log4rs-rolling-file 0.2.0 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 crates.io crate log4rs-rolling-file 0.2.0
[INFO] finished tweaking crates.io crate log4rs-rolling-file 0.2.0
[INFO] tweaked toml for crates.io crate log4rs-rolling-file 0.2.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-value v0.2.1
[INFO] [stderr]   Downloaded serde_yaml v0.2.5
[INFO] [stderr]   Downloaded humantime v0.1.3
[INFO] [stderr]   Downloaded ordered-float v0.1.0
[INFO] [stderr]   Downloaded log4rs v0.4.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 2004cecfce469e72bd592893559c68517ce85f380222db4e8078db8b6f78909d
[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" "2004cecfce469e72bd592893559c68517ce85f380222db4e8078db8b6f78909d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2004cecfce469e72bd592893559c68517ce85f380222db4e8078db8b6f78909d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2004cecfce469e72bd592893559c68517ce85f380222db4e8078db8b6f78909d", kill_on_drop: false }`
[INFO] [stdout] 2004cecfce469e72bd592893559c68517ce85f380222db4e8078db8b6f78909d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 84c33406f294b8580f78557b69f9c738124f69fc6cfd0984ec540fa653a6a065
[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" "84c33406f294b8580f78557b69f9c738124f69fc6cfd0984ec540fa653a6a065", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking humantime v0.1.3
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking ordered-float v0.1.0
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking serde_yaml v0.2.5
[INFO] [stderr]     Checking serde-value v0.2.1
[INFO] [stderr]     Checking log4rs v0.4.8
[INFO] [stderr]  Documenting log4rs-rolling-file v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/policy/compound/trigger/size/config.rs:148:54
[INFO] [stdout]     |
[INFO] [stdout] 148 |   ...                   Some(({
[INFO] [stdout]     |  ____________________________^
[INFO] [stdout] 149 | | ...                             struct __SerdeDeserializeWithStruct {
[INFO] [stdout] 150 | | ...                                 value: u64,
[INFO] [stdout] 151 | | ...                                 phantom: ::std::marker::PhantomData<Config>,
[INFO] [stdout] ...   |
[INFO] [stdout] 179 | | ...                                  > (  )).value
[INFO] [stdout] 180 | | ...                         }));
[INFO] [stdout]     | |______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 148 |                                                 Some({
[INFO] [stdout] 149 |                                                           struct __SerdeDeserializeWithStruct {
[INFO] [stdout] 150 |                                                               value: u64,
[INFO] [stdout] 151 |                                                               phantom: ::std::marker::PhantomData<Config>,
[INFO] [stdout] 152 |                                                           }
[INFO] [stdout] 153 |                                                           impl _serde::de::Deserialize
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.52s
[INFO] running `Command { std: "docker" "inspect" "84c33406f294b8580f78557b69f9c738124f69fc6cfd0984ec540fa653a6a065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84c33406f294b8580f78557b69f9c738124f69fc6cfd0984ec540fa653a6a065", kill_on_drop: false }`
[INFO] [stdout] 84c33406f294b8580f78557b69f9c738124f69fc6cfd0984ec540fa653a6a065