[INFO] fetching crate rift 0.5.1...
[INFO] documenting rift-0.5.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate rift 0.5.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rift 0.5.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rift 0.5.1
[INFO] finished tweaking crates.io crate rift 0.5.1
[INFO] tweaked toml for crates.io crate rift 0.5.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded try_from v0.2.2
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec23dc2dcafbc0edf54c81d827e46d086a847eeb633d2c266ae470e208bc15a3
[INFO] running `Command { std: "docker" "start" "-a" "ec23dc2dcafbc0edf54c81d827e46d086a847eeb633d2c266ae470e208bc15a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec23dc2dcafbc0edf54c81d827e46d086a847eeb633d2c266ae470e208bc15a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec23dc2dcafbc0edf54c81d827e46d086a847eeb633d2c266ae470e208bc15a3", kill_on_drop: false }`
[INFO] [stdout] ec23dc2dcafbc0edf54c81d827e46d086a847eeb633d2c266ae470e208bc15a3
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 767bd6a97a4be79df1d8759ab2efe580ece17a74f9d6bacbdd9d86c8bdb6f5ce
[INFO] running `Command { std: "docker" "start" "-a" "767bd6a97a4be79df1d8759ab2efe580ece17a74f9d6bacbdd9d86c8bdb6f5ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking try_from v0.2.2
[INFO] [stderr]     Checking integer-encoding v1.1.7
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]  Documenting rift v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/protocol/compact.rs:258:44
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let val_type = try!(u8_to_type((type_header & 0x0F)));
[INFO] [stdout]     |                                            ^                  ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 258 -             let val_type = try!(u8_to_type((type_header & 0x0F)));
[INFO] [stdout] 258 +             let val_type = try!(u8_to_type(type_header & 0x0F));
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "767bd6a97a4be79df1d8759ab2efe580ece17a74f9d6bacbdd9d86c8bdb6f5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "767bd6a97a4be79df1d8759ab2efe580ece17a74f9d6bacbdd9d86c8bdb6f5ce", kill_on_drop: false }`
[INFO] [stdout] 767bd6a97a4be79df1d8759ab2efe580ece17a74f9d6bacbdd9d86c8bdb6f5ce
[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" "RUSTFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 29ee9ceddce3f3b1e14db9c15e495fd28859b35435b666ce869873095501328e
[INFO] running `Command { std: "docker" "start" "-a" "29ee9ceddce3f3b1e14db9c15e495fd28859b35435b666ce869873095501328e", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking try_from v0.2.2
[INFO] [stderr]     Checking integer-encoding v1.1.7
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]  Documenting rift v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/protocol/compact.rs:258:44
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let val_type = try!(u8_to_type((type_header & 0x0F)));
[INFO] [stdout]     |                                            ^                  ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 258 -             let val_type = try!(u8_to_type((type_header & 0x0F)));
[INFO] [stdout] 258 +             let val_type = try!(u8_to_type(type_header & 0x0F));
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `Command { std: "docker" "inspect" "29ee9ceddce3f3b1e14db9c15e495fd28859b35435b666ce869873095501328e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29ee9ceddce3f3b1e14db9c15e495fd28859b35435b666ce869873095501328e", kill_on_drop: false }`
[INFO] [stdout] 29ee9ceddce3f3b1e14db9c15e495fd28859b35435b666ce869873095501328e