[INFO] fetching crate msgpack-rs 0.0.1...
[INFO] documenting msgpack-rs-0.0.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate msgpack-rs 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate msgpack-rs 0.0.1 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate msgpack-rs 0.0.1
[INFO] finished tweaking crates.io crate msgpack-rs 0.0.1
[INFO] tweaked toml for crates.io crate msgpack-rs 0.0.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f544afab03d3b6ace0289fd5801728a47efeb71c378cfe8745ca2ce8fdb30d73
[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" "f544afab03d3b6ace0289fd5801728a47efeb71c378cfe8745ca2ce8fdb30d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f544afab03d3b6ace0289fd5801728a47efeb71c378cfe8745ca2ce8fdb30d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f544afab03d3b6ace0289fd5801728a47efeb71c378cfe8745ca2ce8fdb30d73", kill_on_drop: false }`
[INFO] [stdout] f544afab03d3b6ace0289fd5801728a47efeb71c378cfe8745ca2ce8fdb30d73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1288772d2195a2f148ed740e1daec92b944a1919389d93aca897cf8949ddf2c
[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" "c1288772d2195a2f148ed740e1daec92b944a1919389d93aca897cf8949ddf2c", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]  Documenting msgpack-rs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/unpack.rs:254:66
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout]     |                                                                  ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` 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 10.17s
[INFO] running `Command { std: "docker" "inspect" "c1288772d2195a2f148ed740e1daec92b944a1919389d93aca897cf8949ddf2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1288772d2195a2f148ed740e1daec92b944a1919389d93aca897cf8949ddf2c", kill_on_drop: false }`
[INFO] [stdout] c1288772d2195a2f148ed740e1daec92b944a1919389d93aca897cf8949ddf2c