[INFO] fetching crate img_hash 3.1.0...
[INFO] documenting img_hash-3.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate img_hash 3.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate img_hash 3.1.0 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 img_hash 3.1.0
[INFO] finished tweaking crates.io crate img_hash 3.1.0
[INFO] tweaked toml for crates.io crate img_hash 3.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate img_hash 3.1.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded autocfg v0.1.7
[INFO] [stderr]   Downloaded memoffset v0.5.1
[INFO] [stderr]   Downloaded cfg-if v0.1.9
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[INFO] [stderr]   Downloaded rustfft v3.0.1
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[INFO] [stderr]   Downloaded weedle v0.10.0
[INFO] [stderr]   Downloaded quote v1.0.2
[INFO] [stderr]   Downloaded crossbeam-utils v0.7.0
[INFO] [stderr]   Downloaded libc v0.2.61
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[INFO] [stderr]   Downloaded nom v4.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 0461933a6680e8fc52d4d612eaf2f78371e8c0c7fd6edbda39894a04c4fb0943
[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" "0461933a6680e8fc52d4d612eaf2f78371e8c0c7fd6edbda39894a04c4fb0943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0461933a6680e8fc52d4d612eaf2f78371e8c0c7fd6edbda39894a04c4fb0943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0461933a6680e8fc52d4d612eaf2f78371e8c0c7fd6edbda39894a04c4fb0943", kill_on_drop: false }`
[INFO] [stdout] 0461933a6680e8fc52d4d612eaf2f78371e8c0c7fd6edbda39894a04c4fb0943
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 39157284c4f70ded59136a91e2d493ffc63514eb850a0dc5c8ae9876df296da6
[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" "39157284c4f70ded59136a91e2d493ffc63514eb850a0dc5c8ae9876df296da6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.61
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]     Checking strength_reduce v0.2.3
[INFO] [stderr]     Checking transpose v0.1.0
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]     Checking crossbeam-utils v0.7.0
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking transpose v0.2.0
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking rustfft v3.0.1
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rustdct v0.4.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.2
[INFO] [stderr]     Checking img_hash v3.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting img_hash v3.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.28s
[INFO] running `Command { std: "docker" "inspect" "39157284c4f70ded59136a91e2d493ffc63514eb850a0dc5c8ae9876df296da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39157284c4f70ded59136a91e2d493ffc63514eb850a0dc5c8ae9876df296da6", kill_on_drop: false }`
[INFO] [stdout] 39157284c4f70ded59136a91e2d493ffc63514eb850a0dc5c8ae9876df296da6