[INFO] fetching crate zbox 0.9.1...
[INFO] documenting zbox-0.9.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate zbox 0.9.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate zbox 0.9.1 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 zbox 0.9.1
[INFO] finished tweaking crates.io crate zbox 0.9.1
[INFO] tweaked toml for crates.io crate zbox 0.9.1 written to /workspace/builds/worker-4/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_test v1.0.115
[INFO] [stderr]   Downloaded tar v0.4.30
[INFO] [stderr]   Downloaded rmp-serde v0.14.4
[INFO] [stderr]   Downloaded redis v0.11.0
[INFO] [stderr]   Downloaded jni v0.14.0
[INFO] [stderr]   Downloaded cesu8 v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] bdeaed6db86e3138a86168f09988baaa18a2cb437fb2cc04f16c75d9ef44296b
[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" "bdeaed6db86e3138a86168f09988baaa18a2cb437fb2cc04f16c75d9ef44296b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdeaed6db86e3138a86168f09988baaa18a2cb437fb2cc04f16c75d9ef44296b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdeaed6db86e3138a86168f09988baaa18a2cb437fb2cc04f16c75d9ef44296b", kill_on_drop: false }`
[INFO] [stdout] bdeaed6db86e3138a86168f09988baaa18a2cb437fb2cc04f16c75d9ef44296b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 18d6e504336ec0c20c3b45be8af5cf73c1ca60b5401f5b33a765e378e4e6c56b
[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" "18d6e504336ec0c20c3b45be8af5cf73c1ca60b5401f5b33a765e378e4e6c56b", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]     Checking serde_test v1.0.115
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rmp-serde v0.14.4
[INFO] [stderr]    Compiling zbox v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]  Documenting zbox v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/trans/txmgr.rs:194:47
[INFO] [stdout]     |
[INFO] [stdout] 194 |     static ref EXCL_TX_LOCK: Arc<Mutex<()>> = { Arc::new(Mutex::new(())) };
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.49s
[INFO] running `Command { std: "docker" "inspect" "18d6e504336ec0c20c3b45be8af5cf73c1ca60b5401f5b33a765e378e4e6c56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18d6e504336ec0c20c3b45be8af5cf73c1ca60b5401f5b33a765e378e4e6c56b", kill_on_drop: false }`
[INFO] [stdout] 18d6e504336ec0c20c3b45be8af5cf73c1ca60b5401f5b33a765e378e4e6c56b