[INFO] fetching crate vgmdb 0.3.1...
[INFO] documenting vgmdb-0.3.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate vgmdb 0.3.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate vgmdb 0.3.1 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 vgmdb 0.3.1
[INFO] finished tweaking crates.io crate vgmdb 0.3.1
[INFO] tweaked toml for crates.io crate vgmdb 0.3.1 written to /workspace/builds/worker-7/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 simple_parallel v0.2.1
[INFO] [stderr]   Downloaded id3 v0.1.12
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8262a114d2738b5c0d221d36a9626ef7e0fe39eafe2f497b13bca0a691f6e9e
[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" "a8262a114d2738b5c0d221d36a9626ef7e0fe39eafe2f497b13bca0a691f6e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8262a114d2738b5c0d221d36a9626ef7e0fe39eafe2f497b13bca0a691f6e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8262a114d2738b5c0d221d36a9626ef7e0fe39eafe2f497b13bca0a691f6e9e", kill_on_drop: false }`
[INFO] [stdout] a8262a114d2738b5c0d221d36a9626ef7e0fe39eafe2f497b13bca0a691f6e9e
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e22347b658373b4adf2adb2c82224d5723843ae157ba109153349c80b575d05
[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" "0e22347b658373b4adf2adb2c82224d5723843ae157ba109153349c80b575d05", kill_on_drop: false }`
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking simple_parallel v0.2.1
[INFO] [stderr]     Checking id3 v0.1.12
[INFO] [stderr]  Documenting vgmdb v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/vgmdb/io.rs:46:43
[INFO] [stdout]    |
[INFO] [stdout] 46 |        , tracks: d.tracks.into_iter().zip((1..)).map(|(t,i)|  convert_track(t, i) ).collect()
[INFO] [stdout]    |                                           ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/vgmdb/data.rs:55:44
[INFO] [stdout]    |
[INFO] [stdout] 55 |         for (d,i) in self.discs.iter().zip((1..)) {
[INFO] [stdout]    |                                            ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.23s
[INFO] running `Command { std: "docker" "inspect" "0e22347b658373b4adf2adb2c82224d5723843ae157ba109153349c80b575d05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e22347b658373b4adf2adb2c82224d5723843ae157ba109153349c80b575d05", kill_on_drop: false }`
[INFO] [stdout] 0e22347b658373b4adf2adb2c82224d5723843ae157ba109153349c80b575d05