[INFO] fetching crate rar 0.2.0...
[INFO] documenting rar-0.2.0 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate rar 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rar 0.2.0 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rar 0.2.0
[INFO] finished tweaking crates.io crate rar 0.2.0
[INFO] tweaked toml for crates.io crate rar 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c65c56a39aa0a71adc57abe9717dc72d0775b1ed120b6223a0d3c1ea0e2ba39b
[INFO] running `Command { std: "docker" "start" "-a" "c65c56a39aa0a71adc57abe9717dc72d0775b1ed120b6223a0d3c1ea0e2ba39b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c65c56a39aa0a71adc57abe9717dc72d0775b1ed120b6223a0d3c1ea0e2ba39b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c65c56a39aa0a71adc57abe9717dc72d0775b1ed120b6223a0d3c1ea0e2ba39b", kill_on_drop: false }`
[INFO] [stdout] c65c56a39aa0a71adc57abe9717dc72d0775b1ed120b6223a0d3c1ea0e2ba39b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ae50edab1b8c2ea0cb0a1b0f38a73283b7cda826da575b357d0fb624625d095
[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" "0ae50edab1b8c2ea0cb0a1b0f38a73283b7cda826da575b357d0fb624625d095", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking chrono v0.4.12
[INFO] [stderr]     Checking addr2line v0.12.2
[INFO] [stderr]     Checking backtrace v0.3.49
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]  Documenting rar v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/sig_block.rs:18:32
[INFO] [stdout]    |
[INFO] [stdout] 18 | named!(rar_signature(&[u8]) -> (SignatureBlock), 
[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/head_block.rs:143:30
[INFO] [stdout]     |
[INFO] [stdout] 143 | named!(base_header(&[u8]) -> (HeadBlock), 
[INFO] [stdout]     |                              ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/vint.rs:60:31
[INFO] [stdout]    |
[INFO] [stdout] 60 | named!(collect_vint(&[u8]) -> (&[u8]),
[INFO] [stdout]    |                               ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/vint.rs:74:27
[INFO] [stdout]    |
[INFO] [stdout] 74 | named!(take_one(&[u8]) -> (&[u8]),
[INFO] [stdout]    |                           ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.91s
[INFO] running `Command { std: "docker" "inspect" "0ae50edab1b8c2ea0cb0a1b0f38a73283b7cda826da575b357d0fb624625d095", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ae50edab1b8c2ea0cb0a1b0f38a73283b7cda826da575b357d0fb624625d095", kill_on_drop: false }`
[INFO] [stdout] 0ae50edab1b8c2ea0cb0a1b0f38a73283b7cda826da575b357d0fb624625d095