[INFO] fetching crate context-attribute 1.0.0...
[INFO] documenting context-attribute-1.0.0 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate context-attribute 1.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate context-attribute 1.0.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate context-attribute 1.0.0
[INFO] finished tweaking crates.io crate context-attribute 1.0.0
[INFO] tweaked toml for crates.io crate context-attribute 1.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4acfa095dc5b33dc106ae82e1b60ce894a8cbbc3fcdd5eda6b55d56b2180c464
[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" "4acfa095dc5b33dc106ae82e1b60ce894a8cbbc3fcdd5eda6b55d56b2180c464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4acfa095dc5b33dc106ae82e1b60ce894a8cbbc3fcdd5eda6b55d56b2180c464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4acfa095dc5b33dc106ae82e1b60ce894a8cbbc3fcdd5eda6b55d56b2180c464", kill_on_drop: false }`
[INFO] [stdout] 4acfa095dc5b33dc106ae82e1b60ce894a8cbbc3fcdd5eda6b55d56b2180c464
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a97f6df23b34276cfb5d5478115fa675710e286b856245bedf963bd5e0f71717
[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" "a97f6df23b34276cfb5d5478115fa675710e286b856245bedf963bd5e0f71717", kill_on_drop: false }`
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]  Documenting context-attribute v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.71s
[INFO] running `Command { std: "docker" "inspect" "a97f6df23b34276cfb5d5478115fa675710e286b856245bedf963bd5e0f71717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a97f6df23b34276cfb5d5478115fa675710e286b856245bedf963bd5e0f71717", kill_on_drop: false }`
[INFO] [stdout] a97f6df23b34276cfb5d5478115fa675710e286b856245bedf963bd5e0f71717
