[INFO] crate tower 0.3.1 is already in cache
[INFO] documenting tower-0.3.1 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate tower 0.3.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate tower 0.3.1 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 tower 0.3.1
[INFO] finished tweaking crates.io crate tower 0.3.1
[INFO] tweaked toml for crates.io crate tower 0.3.1 written to /workspace/builds/worker-1/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 897f7953bb3f7d71b019df29e697c9364ef3cd560854d5411cae21d23dd703c1
[INFO] running `Command { std: "docker" "start" "-a" "897f7953bb3f7d71b019df29e697c9364ef3cd560854d5411cae21d23dd703c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "897f7953bb3f7d71b019df29e697c9364ef3cd560854d5411cae21d23dd703c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "897f7953bb3f7d71b019df29e697c9364ef3cd560854d5411cae21d23dd703c1", kill_on_drop: false }`
[INFO] [stdout] 897f7953bb3f7d71b019df29e697c9364ef3cd560854d5411cae21d23dd703c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 139641a0c2f24fa2f1bd42235ad9a17f142353bee36d39eccf545f8831137831
[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" "139641a0c2f24fa2f1bd42235ad9a17f142353bee36d39eccf545f8831137831", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking bytes v0.5.5
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking tracing v0.1.15
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]  Documenting tower v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.60s
[INFO] running `Command { std: "docker" "inspect" "139641a0c2f24fa2f1bd42235ad9a17f142353bee36d39eccf545f8831137831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139641a0c2f24fa2f1bd42235ad9a17f142353bee36d39eccf545f8831137831", kill_on_drop: false }`
[INFO] [stdout] 139641a0c2f24fa2f1bd42235ad9a17f142353bee36d39eccf545f8831137831