[INFO] fetching crate exit-future 0.2.0...
[INFO] documenting exit-future-0.2.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate exit-future 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate exit-future 0.2.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exit-future 0.2.0
[INFO] finished tweaking crates.io crate exit-future 0.2.0
[INFO] tweaked toml for crates.io crate exit-future 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcb1f8a77a42d27c6106a16926b1b448aed35039258ee73e5792eef1f9d5c45c
[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" "fcb1f8a77a42d27c6106a16926b1b448aed35039258ee73e5792eef1f9d5c45c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcb1f8a77a42d27c6106a16926b1b448aed35039258ee73e5792eef1f9d5c45c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcb1f8a77a42d27c6106a16926b1b448aed35039258ee73e5792eef1f9d5c45c", kill_on_drop: false }`
[INFO] [stdout] fcb1f8a77a42d27c6106a16926b1b448aed35039258ee73e5792eef1f9d5c45c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e040c47813ba5f778c367f162c3f86af221e5049377f5f54a565b242e7e3240e
[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" "e040c47813ba5f778c367f162c3f86af221e5049377f5f54a565b242e7e3240e", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.6
[INFO] [stderr]     Checking futures-channel v0.3.6
[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]     Checking futures-executor v0.3.6
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stderr]  Documenting exit-future v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.94s
[INFO] running `Command { std: "docker" "inspect" "e040c47813ba5f778c367f162c3f86af221e5049377f5f54a565b242e7e3240e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e040c47813ba5f778c367f162c3f86af221e5049377f5f54a565b242e7e3240e", kill_on_drop: false }`
[INFO] [stdout] e040c47813ba5f778c367f162c3f86af221e5049377f5f54a565b242e7e3240e
