[INFO] fetching crate dividebatur 0.2.1...
[INFO] documenting dividebatur-0.2.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate dividebatur 0.2.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate dividebatur 0.2.1 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 dividebatur 0.2.1
[INFO] finished tweaking crates.io crate dividebatur 0.2.1
[INFO] tweaked toml for crates.io crate dividebatur 0.2.1 written to /workspace/builds/worker-13/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] f810332e5fe26e5698cef91cbd1f2c8f15a59261e8a905eac2bf04432e6ed85c
[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" "f810332e5fe26e5698cef91cbd1f2c8f15a59261e8a905eac2bf04432e6ed85c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f810332e5fe26e5698cef91cbd1f2c8f15a59261e8a905eac2bf04432e6ed85c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f810332e5fe26e5698cef91cbd1f2c8f15a59261e8a905eac2bf04432e6ed85c", kill_on_drop: false }`
[INFO] [stdout] f810332e5fe26e5698cef91cbd1f2c8f15a59261e8a905eac2bf04432e6ed85c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 1f3c34b1589a0e09a49012860d25d14cd1421378055746087bb635781c44e1c1
[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" "1f3c34b1589a0e09a49012860d25d14cd1421378055746087bb635781c44e1c1", kill_on_drop: false }`
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]  Documenting dividebatur v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/aec/data/candidates.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     Ok((rows))
[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 type
[INFO] [stdout]    --> src/engine.rs:304:80
[INFO] [stdout]     |
[INFO] [stdout] 304 |     fn find_tie_breaker(&self, candidates: &Vec<CandidateIndex>) -> Option<Vec<(CandidateIndex)>> {
[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 5.43s
[INFO] running `Command { std: "docker" "inspect" "1f3c34b1589a0e09a49012860d25d14cd1421378055746087bb635781c44e1c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f3c34b1589a0e09a49012860d25d14cd1421378055746087bb635781c44e1c1", kill_on_drop: false }`
[INFO] [stdout] 1f3c34b1589a0e09a49012860d25d14cd1421378055746087bb635781c44e1c1