[INFO] fetching crate mappedheap 0.1.1...
[INFO] documenting mappedheap-0.1.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate mappedheap 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mappedheap 0.1.1 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 mappedheap 0.1.1
[INFO] finished tweaking crates.io crate mappedheap 0.1.1
[INFO] tweaked toml for crates.io crate mappedheap 0.1.1 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lock-wrappers v0.1.2
[INFO] [stderr]   Downloaded integer-atomics v1.0.2
[INFO] [stderr]   Downloaded futex v0.1.3
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5abd0d5c5c3f84ebfd5e931984dd68e2ce7f5d766491220f5e7e846d013eaed
[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" "b5abd0d5c5c3f84ebfd5e931984dd68e2ce7f5d766491220f5e7e846d013eaed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5abd0d5c5c3f84ebfd5e931984dd68e2ce7f5d766491220f5e7e846d013eaed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5abd0d5c5c3f84ebfd5e931984dd68e2ce7f5d766491220f5e7e846d013eaed", kill_on_drop: false }`
[INFO] [stdout] b5abd0d5c5c3f84ebfd5e931984dd68e2ce7f5d766491220f5e7e846d013eaed
[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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e924bfcb01bf4b1a48fb86c6de0dbc1bc22c4fe03a471728bf14ebc8d79bee5
[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" "6e924bfcb01bf4b1a48fb86c6de0dbc1bc22c4fe03a471728bf14ebc8d79bee5", kill_on_drop: false }`
[INFO] [stderr]     Checking lock-wrappers v0.1.2
[INFO] [stderr]     Checking integer-atomics v1.0.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking futex v0.1.3
[INFO] [stderr]  Documenting mappedheap v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:231:14
[INFO] [stdout]     |
[INFO] [stdout] 231 |         Some(((fragment.addr + (id - fragment.offset) as usize * PAGESZ) as *mut [u8; PAGESZ]))
[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 2.12s
[INFO] running `Command { std: "docker" "inspect" "6e924bfcb01bf4b1a48fb86c6de0dbc1bc22c4fe03a471728bf14ebc8d79bee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e924bfcb01bf4b1a48fb86c6de0dbc1bc22c4fe03a471728bf14ebc8d79bee5", kill_on_drop: false }`
[INFO] [stdout] 6e924bfcb01bf4b1a48fb86c6de0dbc1bc22c4fe03a471728bf14ebc8d79bee5