[INFO] fetching crate linux-taskstats 0.1.3...
[INFO] documenting linux-taskstats-0.1.3 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate linux-taskstats 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate linux-taskstats 0.1.3 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 linux-taskstats 0.1.3
[INFO] finished tweaking crates.io crate linux-taskstats 0.1.3
[INFO] tweaked toml for crates.io crate linux-taskstats 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate linux-taskstats 0.1.3 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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ee8aab0c28f1f5e7f22ccc62365fc442ba9f30554b7be25f9291f45010c03054
[INFO] running `Command { std: "docker" "start" "-a" "ee8aab0c28f1f5e7f22ccc62365fc442ba9f30554b7be25f9291f45010c03054", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee8aab0c28f1f5e7f22ccc62365fc442ba9f30554b7be25f9291f45010c03054", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee8aab0c28f1f5e7f22ccc62365fc442ba9f30554b7be25f9291f45010c03054", kill_on_drop: false }`
[INFO] [stdout] ee8aab0c28f1f5e7f22ccc62365fc442ba9f30554b7be25f9291f45010c03054
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5f018c65016a4c8a1b3309b36190e531315696dfecfdaa92bfef15e1ef2a732f
[INFO] running `Command { std: "docker" "start" "-a" "5f018c65016a4c8a1b3309b36190e531315696dfecfdaa92bfef15e1ef2a732f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking netlink-sys v0.2.0
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling bindgen v0.53.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]    Compiling linux-taskstats v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting linux-taskstats v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 17s
[INFO] running `Command { std: "docker" "inspect" "5f018c65016a4c8a1b3309b36190e531315696dfecfdaa92bfef15e1ef2a732f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f018c65016a4c8a1b3309b36190e531315696dfecfdaa92bfef15e1ef2a732f", kill_on_drop: false }`
[INFO] [stdout] 5f018c65016a4c8a1b3309b36190e531315696dfecfdaa92bfef15e1ef2a732f