[INFO] fetching crate mcr 0.2.1...
[INFO] documenting mcr-0.2.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate mcr 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mcr 0.2.1 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 mcr 0.2.1
[INFO] finished tweaking crates.io crate mcr 0.2.1
[INFO] tweaked toml for crates.io crate mcr 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mcr 0.2.1 already has a lockfile, it will not be regenerated
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d7ae6e8a428cc69483cd2865bd57759079c3c124707fcd71b2f04b299c35d2f9
[INFO] running `Command { std: "docker" "start" "-a" "d7ae6e8a428cc69483cd2865bd57759079c3c124707fcd71b2f04b299c35d2f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7ae6e8a428cc69483cd2865bd57759079c3c124707fcd71b2f04b299c35d2f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7ae6e8a428cc69483cd2865bd57759079c3c124707fcd71b2f04b299c35d2f9", kill_on_drop: false }`
[INFO] [stdout] d7ae6e8a428cc69483cd2865bd57759079c3c124707fcd71b2f04b299c35d2f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 27271537f47037692402b8cc5d7d2a47cb15cca25ccfc2b7d736ff8d4cda7b41
[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" "27271537f47037692402b8cc5d7d2a47cb15cca25ccfc2b7d736ff8d4cda7b41", kill_on_drop: false }`
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]  Documenting mcr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.38s
[INFO] running `Command { std: "docker" "inspect" "27271537f47037692402b8cc5d7d2a47cb15cca25ccfc2b7d736ff8d4cda7b41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27271537f47037692402b8cc5d7d2a47cb15cca25ccfc2b7d736ff8d4cda7b41", kill_on_drop: false }`
[INFO] [stdout] 27271537f47037692402b8cc5d7d2a47cb15cca25ccfc2b7d736ff8d4cda7b41
