[INFO] fetching crate font-loader 0.11.0...
[INFO] documenting font-loader-0.11.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate font-loader 0.11.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate font-loader 0.11.0 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 font-loader 0.11.0
[INFO] finished tweaking crates.io crate font-loader 0.11.0
[INFO] tweaked toml for crates.io crate font-loader 0.11.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate font-loader 0.11.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 27de165e93762df09f40f45b88cf412f5c70c6319247f545941fb249e8b9fddd
[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" "27de165e93762df09f40f45b88cf412f5c70c6319247f545941fb249e8b9fddd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27de165e93762df09f40f45b88cf412f5c70c6319247f545941fb249e8b9fddd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27de165e93762df09f40f45b88cf412f5c70c6319247f545941fb249e8b9fddd", kill_on_drop: false }`
[INFO] [stdout] 27de165e93762df09f40f45b88cf412f5c70c6319247f545941fb249e8b9fddd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 16c1c660bf215b2e7dea41e1b996526327aa1dfc4b785e163970561d229742f9
[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" "16c1c660bf215b2e7dea41e1b996526327aa1dfc4b785e163970561d229742f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]     Checking servo-fontconfig v0.5.1
[INFO] [stderr]  Documenting font-loader v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.92s
[INFO] running `Command { std: "docker" "inspect" "16c1c660bf215b2e7dea41e1b996526327aa1dfc4b785e163970561d229742f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16c1c660bf215b2e7dea41e1b996526327aa1dfc4b785e163970561d229742f9", kill_on_drop: false }`
[INFO] [stdout] 16c1c660bf215b2e7dea41e1b996526327aa1dfc4b785e163970561d229742f9