[INFO] fetching crate img2raw-tools 0.4.0...
[INFO] documenting img2raw-tools-0.4.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate img2raw-tools 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate img2raw-tools 0.4.0 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 img2raw-tools 0.4.0
[INFO] finished tweaking crates.io crate img2raw-tools 0.4.0
[INFO] tweaked toml for crates.io crate img2raw-tools 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate img2raw-tools 0.4.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8979cd9fee066b91c413843ac3c78ced1b5182b4de843d940f8db2cd95050009
[INFO] running `Command { std: "docker" "start" "-a" "8979cd9fee066b91c413843ac3c78ced1b5182b4de843d940f8db2cd95050009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8979cd9fee066b91c413843ac3c78ced1b5182b4de843d940f8db2cd95050009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8979cd9fee066b91c413843ac3c78ced1b5182b4de843d940f8db2cd95050009", kill_on_drop: false }`
[INFO] [stdout] 8979cd9fee066b91c413843ac3c78ced1b5182b4de843d940f8db2cd95050009
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f4bbc1e51c9b50741af56018425fdaf8126a7fb1dddafc7f7bb0446f221ca7c5
[INFO] running `Command { std: "docker" "start" "-a" "f4bbc1e51c9b50741af56018425fdaf8126a7fb1dddafc7f7bb0446f221ca7c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]     Checking half v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking squish v1.0.0
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling zerocopy-derive v0.1.4
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking zerocopy v0.2.8
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking img2raw v0.4.0
[INFO] [stderr]  Documenting img2raw-tools v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.21s
[INFO] running `Command { std: "docker" "inspect" "f4bbc1e51c9b50741af56018425fdaf8126a7fb1dddafc7f7bb0446f221ca7c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4bbc1e51c9b50741af56018425fdaf8126a7fb1dddafc7f7bb0446f221ca7c5", kill_on_drop: false }`
[INFO] [stdout] f4bbc1e51c9b50741af56018425fdaf8126a7fb1dddafc7f7bb0446f221ca7c5