[INFO] crate zub 0.3.14 is already in cache
[INFO] documenting zub-0.3.14 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate zub 0.3.14 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate zub 0.3.14 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 zub 0.3.14
[INFO] finished tweaking crates.io crate zub 0.3.14
[INFO] tweaked toml for crates.io crate zub 0.3.14 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate zub 0.3.14 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 7ea6a7ea33f869ceef59a897b499804b3a978e8c338ac1c3acf9899f7068e4ba
[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" "7ea6a7ea33f869ceef59a897b499804b3a978e8c338ac1c3acf9899f7068e4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ea6a7ea33f869ceef59a897b499804b3a978e8c338ac1c3acf9899f7068e4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ea6a7ea33f869ceef59a897b499804b3a978e8c338ac1c3acf9899f7068e4ba", kill_on_drop: false }`
[INFO] [stdout] 7ea6a7ea33f869ceef59a897b499804b3a978e8c338ac1c3acf9899f7068e4ba
[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] 23d4cfef921482f82d6a91fb58f4e7eef236649875a718abb66607038b364945
[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" "23d4cfef921482f82d6a91fb58f4e7eef236649875a718abb66607038b364945", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ahash v0.3.3
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling flame v0.2.2
[INFO] [stderr]    Compiling flamer v0.3.0
[INFO] [stderr]  Documenting zub v0.3.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]   --> src/vm/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 33s
[INFO] running `Command { std: "docker" "inspect" "23d4cfef921482f82d6a91fb58f4e7eef236649875a718abb66607038b364945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23d4cfef921482f82d6a91fb58f4e7eef236649875a718abb66607038b364945", kill_on_drop: false }`
[INFO] [stdout] 23d4cfef921482f82d6a91fb58f4e7eef236649875a718abb66607038b364945