[INFO] fetching crate font-kit 0.10.0...
[INFO] documenting font-kit-0.10.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate font-kit 0.10.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate font-kit 0.10.0 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 font-kit 0.10.0
[INFO] finished tweaking crates.io crate font-kit 0.10.0
[INFO] tweaked toml for crates.io crate font-kit 0.10.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate font-kit 0.10.0 already has a lockfile, it will not be regenerated
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded colored v1.8.0
[INFO] [stderr]   Downloaded dwrote v0.11.0
[INFO] [stderr]   Downloaded rgb v0.8.20
[INFO] [stderr]   Downloaded cgmath v0.16.1
[INFO] [stderr]   Downloaded walkdir v2.2.7
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded wio v0.2.2
[INFO] [stderr]   Downloaded termion v1.5.2
[INFO] [stderr]   Downloaded backtrace-sys v0.1.28
[INFO] [stderr]   Downloaded float-ord v0.2.0
[INFO] [stderr]   Downloaded same-file v1.0.4
[INFO] [stderr]   Downloaded prettytable-rs v0.8.0
[INFO] [stderr]   Downloaded freetype v0.7.0
[INFO] [stderr]   Downloaded encode_unicode v0.3.5
[INFO] [stderr]   Downloaded pathfinder_simd v0.5.0
[INFO] [stderr]   Downloaded pathfinder_geometry v0.5.1
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded syn v0.15.34
[INFO] [stderr]   Downloaded winconsole v0.10.0
[INFO] [stderr]   Downloaded backtrace v0.3.30
[INFO] [stderr]   Downloaded pbr v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] b241d1f1ddd3ee91cf0c70706eb58946de316c03e4e3026f643b31e5c9d356a1
[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" "b241d1f1ddd3ee91cf0c70706eb58946de316c03e4e3026f643b31e5c9d356a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b241d1f1ddd3ee91cf0c70706eb58946de316c03e4e3026f643b31e5c9d356a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b241d1f1ddd3ee91cf0c70706eb58946de316c03e4e3026f643b31e5c9d356a1", kill_on_drop: false }`
[INFO] [stdout] b241d1f1ddd3ee91cf0c70706eb58946de316c03e4e3026f643b31e5c9d356a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a98bb74860f3898286b23d47ca50a2b2ef19bd22fdfeb2ac4141e38ab607577c
[INFO] running `Command { std: "docker" "start" "-a" "a98bb74860f3898286b23d47ca50a2b2ef19bd22fdfeb2ac4141e38ab607577c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking freetype v0.7.0
[INFO] [stderr]     Checking servo-fontconfig v0.5.1
[INFO] [stderr]  Documenting font-kit v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/loaders/freetype.rs:1201:9
[INFO] [stdout]      |
[INFO] [stdout] 1201 |         (self.to_f32() * (1.0 / 64.0))
[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 6.47s
[INFO] running `Command { std: "docker" "inspect" "a98bb74860f3898286b23d47ca50a2b2ef19bd22fdfeb2ac4141e38ab607577c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a98bb74860f3898286b23d47ca50a2b2ef19bd22fdfeb2ac4141e38ab607577c", kill_on_drop: false }`
[INFO] [stdout] a98bb74860f3898286b23d47ca50a2b2ef19bd22fdfeb2ac4141e38ab607577c