[INFO] fetching crate mtpng 0.3.4...
[INFO] documenting mtpng-0.3.4 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate mtpng 0.3.4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mtpng 0.3.4 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 mtpng 0.3.4
[INFO] finished tweaking crates.io crate mtpng 0.3.4
[INFO] tweaked toml for crates.io crate mtpng 0.3.4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate mtpng 0.3.4 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 595f53176d1bd4cc04302216c5d5a055a1981eef94a1fc3f8f35e3ca9fd8a806
[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" "595f53176d1bd4cc04302216c5d5a055a1981eef94a1fc3f8f35e3ca9fd8a806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "595f53176d1bd4cc04302216c5d5a055a1981eef94a1fc3f8f35e3ca9fd8a806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "595f53176d1bd4cc04302216c5d5a055a1981eef94a1fc3f8f35e3ca9fd8a806", kill_on_drop: false }`
[INFO] [stdout] 595f53176d1bd4cc04302216c5d5a055a1981eef94a1fc3f8f35e3ca9fd8a806
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 11c3f97497f04d2510e48a49ef4cf872777f32ca5a58b851e33bfd4525b36d5c
[INFO] running `Command { std: "docker" "start" "-a" "11c3f97497f04d2510e48a49ef4cf872777f32ca5a58b851e33bfd4525b36d5c", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]  Documenting mtpng v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.11s
[INFO] running `Command { std: "docker" "inspect" "11c3f97497f04d2510e48a49ef4cf872777f32ca5a58b851e33bfd4525b36d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11c3f97497f04d2510e48a49ef4cf872777f32ca5a58b851e33bfd4525b36d5c", kill_on_drop: false }`
[INFO] [stdout] 11c3f97497f04d2510e48a49ef4cf872777f32ca5a58b851e33bfd4525b36d5c