[INFO] fetching crate merkle_trees 0.1.0...
[INFO] documenting merkle_trees-0.1.0 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate merkle_trees 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate merkle_trees 0.1.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merkle_trees 0.1.0
[INFO] finished tweaking crates.io crate merkle_trees 0.1.0
[INFO] tweaked toml for crates.io crate merkle_trees 0.1.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10f8f683ed4953bb1e4472366cd5ad3d1db168ae38568e7b6097ccb953a76ef2
[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" "10f8f683ed4953bb1e4472366cd5ad3d1db168ae38568e7b6097ccb953a76ef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10f8f683ed4953bb1e4472366cd5ad3d1db168ae38568e7b6097ccb953a76ef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10f8f683ed4953bb1e4472366cd5ad3d1db168ae38568e7b6097ccb953a76ef2", kill_on_drop: false }`
[INFO] [stdout] 10f8f683ed4953bb1e4472366cd5ad3d1db168ae38568e7b6097ccb953a76ef2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 436d9edd479e5855a9fe325a0b32451ccd20d364f011241daacc87d24ac1a9f0
[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" "436d9edd479e5855a9fe325a0b32451ccd20d364f011241daacc87d24ac1a9f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking rlp v0.4.6
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]  Documenting merkle_trees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/compact_merkle_tree.rs:284:28
[INFO] [stdout]     |
[INFO] [stdout] 284 |                     idx += (p - 1);
[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 assigned value
[INFO] [stdout]    --> src/compact_merkle_tree.rs:834:29
[INFO] [stdout]     |
[INFO] [stdout] 834 |         let last_leaf_idx = (size - 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 7.36s
[INFO] running `Command { std: "docker" "inspect" "436d9edd479e5855a9fe325a0b32451ccd20d364f011241daacc87d24ac1a9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "436d9edd479e5855a9fe325a0b32451ccd20d364f011241daacc87d24ac1a9f0", kill_on_drop: false }`
[INFO] [stdout] 436d9edd479e5855a9fe325a0b32451ccd20d364f011241daacc87d24ac1a9f0
