[INFO] fetching crate servant-log 0.1.0...
[INFO] documenting servant-log-0.1.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate servant-log 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate servant-log 0.1.0 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 servant-log 0.1.0
[INFO] finished tweaking crates.io crate servant-log 0.1.0
[INFO] tweaked toml for crates.io crate servant-log 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate servant-log 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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" "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] 76fb5a723e08a4be00457414147db65c10b0591102a9a4b25bc81f8104ad9cde
[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" "76fb5a723e08a4be00457414147db65c10b0591102a9a4b25bc81f8104ad9cde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76fb5a723e08a4be00457414147db65c10b0591102a9a4b25bc81f8104ad9cde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76fb5a723e08a4be00457414147db65c10b0591102a9a4b25bc81f8104ad9cde", kill_on_drop: false }`
[INFO] [stdout] 76fb5a723e08a4be00457414147db65c10b0591102a9a4b25bc81f8104ad9cde
[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" "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] [stdout] 80a53a65f3e036fe892483e8a500dda6c28f7e7103d2ca53c88082436d35b335
[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" "80a53a65f3e036fe892483e8a500dda6c28f7e7103d2ca53c88082436d35b335", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]     Checking ring-channel v0.7.0
[INFO] [stderr]  Documenting servant-log v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.20s
[INFO] running `Command { std: "docker" "inspect" "80a53a65f3e036fe892483e8a500dda6c28f7e7103d2ca53c88082436d35b335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80a53a65f3e036fe892483e8a500dda6c28f7e7103d2ca53c88082436d35b335", kill_on_drop: false }`
[INFO] [stdout] 80a53a65f3e036fe892483e8a500dda6c28f7e7103d2ca53c88082436d35b335