[INFO] fetching crate ctor 0.1.16...
[INFO] documenting ctor-0.1.16 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate ctor 0.1.16 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate ctor 0.1.16 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 ctor 0.1.16
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ctor 0.1.16
[INFO] tweaked toml for crates.io crate ctor 0.1.16 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate ctor 0.1.16 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc-print v0.1.14
[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] [stdout] 2ea26cc55f6113319052e094dddfc7cc4fa437c0bf7e686ed7b47a10fe9339e1
[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" "2ea26cc55f6113319052e094dddfc7cc4fa437c0bf7e686ed7b47a10fe9339e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ea26cc55f6113319052e094dddfc7cc4fa437c0bf7e686ed7b47a10fe9339e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ea26cc55f6113319052e094dddfc7cc4fa437c0bf7e686ed7b47a10fe9339e1", kill_on_drop: false }`
[INFO] [stdout] 2ea26cc55f6113319052e094dddfc7cc4fa437c0bf7e686ed7b47a10fe9339e1
[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] c049ec6dd6d3c6268e3475a283b93e7e640c147ee6a68343e8a5f1fc9eba5b36
[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" "c049ec6dd6d3c6268e3475a283b93e7e640c147ee6a68343e8a5f1fc9eba5b36", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]  Documenting ctor v0.1.16 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.45s
[INFO] running `Command { std: "docker" "inspect" "c049ec6dd6d3c6268e3475a283b93e7e640c147ee6a68343e8a5f1fc9eba5b36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c049ec6dd6d3c6268e3475a283b93e7e640c147ee6a68343e8a5f1fc9eba5b36", kill_on_drop: false }`
[INFO] [stdout] c049ec6dd6d3c6268e3475a283b93e7e640c147ee6a68343e8a5f1fc9eba5b36
