[INFO] fetching crate specs-task 0.4.0...
[INFO] documenting specs-task-0.4.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate specs-task 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate specs-task 0.4.0 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate specs-task 0.4.0
[INFO] finished tweaking crates.io crate specs-task 0.4.0
[INFO] tweaked toml for crates.io crate specs-task 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f88e47af2265f589787b116f8ae056dd56a4ec9a1d4f9d09cbbc5dbf7c0e999b
[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" "f88e47af2265f589787b116f8ae056dd56a4ec9a1d4f9d09cbbc5dbf7c0e999b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f88e47af2265f589787b116f8ae056dd56a4ec9a1d4f9d09cbbc5dbf7c0e999b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f88e47af2265f589787b116f8ae056dd56a4ec9a1d4f9d09cbbc5dbf7c0e999b", kill_on_drop: false }`
[INFO] [stdout] f88e47af2265f589787b116f8ae056dd56a4ec9a1d4f9d09cbbc5dbf7c0e999b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] dfea3fa12a48053450a1a35034193eff0d9263e55c3ccab2aaaaf8039d1ea579
[INFO] running `Command { std: "docker" "start" "-a" "dfea3fa12a48053450a1a35034193eff0d9263e55c3ccab2aaaaf8039d1ea579", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling shred-derive v0.6.2
[INFO] [stderr]    Compiling specs-derive v0.4.1
[INFO] [stderr]     Checking shred v0.10.2
[INFO] [stderr]     Checking specs v0.16.1
[INFO] [stderr]  Documenting specs-task v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.40s
[INFO] running `Command { std: "docker" "inspect" "dfea3fa12a48053450a1a35034193eff0d9263e55c3ccab2aaaaf8039d1ea579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfea3fa12a48053450a1a35034193eff0d9263e55c3ccab2aaaaf8039d1ea579", kill_on_drop: false }`
[INFO] [stdout] dfea3fa12a48053450a1a35034193eff0d9263e55c3ccab2aaaaf8039d1ea579