[INFO] fetching crate randselect 0.2.4...
[INFO] documenting randselect-0.2.4 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate randselect 0.2.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate randselect 0.2.4 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 randselect 0.2.4
[INFO] finished tweaking crates.io crate randselect 0.2.4
[INFO] tweaked toml for crates.io crate randselect 0.2.4 written to /workspace/builds/worker-4/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-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] 52fc91749fc3a12a0d7d8a2a3c42759151d7ac12d5234c474f130a6b8412f82a
[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" "52fc91749fc3a12a0d7d8a2a3c42759151d7ac12d5234c474f130a6b8412f82a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52fc91749fc3a12a0d7d8a2a3c42759151d7ac12d5234c474f130a6b8412f82a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fc91749fc3a12a0d7d8a2a3c42759151d7ac12d5234c474f130a6b8412f82a", kill_on_drop: false }`
[INFO] [stdout] 52fc91749fc3a12a0d7d8a2a3c42759151d7ac12d5234c474f130a6b8412f82a
[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] 3c01e087d71743309fe414d5bfd166ce3b6ab11e92eb3754286f8f5864938331
[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" "3c01e087d71743309fe414d5bfd166ce3b6ab11e92eb3754286f8f5864938331", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking memchr v2.3.3
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking fern v0.5.9
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking os_type v2.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking human-panic v1.0.3
[INFO] [stderr]  Documenting randselect v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.43s
[INFO] running `Command { std: "docker" "inspect" "3c01e087d71743309fe414d5bfd166ce3b6ab11e92eb3754286f8f5864938331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c01e087d71743309fe414d5bfd166ce3b6ab11e92eb3754286f8f5864938331", kill_on_drop: false }`
[INFO] [stdout] 3c01e087d71743309fe414d5bfd166ce3b6ab11e92eb3754286f8f5864938331