[INFO] crate libimagref 0.3.0 is already in cache
[INFO] documenting libimagref-0.3.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate libimagref 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libimagref 0.3.0 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 libimagref 0.3.0
[INFO] finished tweaking crates.io crate libimagref 0.3.0
[INFO] tweaked toml for crates.io crate libimagref 0.3.0 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] 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] 2b8c0d7200c91fffaf54cae10552d3014fcaccb9752b6661634724026b469418
[INFO] running `Command { std: "docker" "start" "-a" "2b8c0d7200c91fffaf54cae10552d3014fcaccb9752b6661634724026b469418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b8c0d7200c91fffaf54cae10552d3014fcaccb9752b6661634724026b469418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b8c0d7200c91fffaf54cae10552d3014fcaccb9752b6661634724026b469418", kill_on_drop: false }`
[INFO] [stdout] 2b8c0d7200c91fffaf54cae10552d3014fcaccb9752b6661634724026b469418
[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] 83b06a873dd0d71bb2f654188822254497a96aaeac3a3bec224ad7895e5a6059
[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" "83b06a873dd0d71bb2f654188822254497a96aaeac3a3bec224ad7895e5a6059", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking same-file v0.1.3
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking itertools v0.6.5
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking walkdir v1.0.7
[INFO] [stderr]     Checking libimagerror v0.3.0
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking csv v0.15.0
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking prettytable-rs v0.6.7
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking libimagutil v0.3.0
[INFO] [stderr]     Checking semver-parser v0.6.2
[INFO] [stderr]     Checking semver v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking libimagstore v0.3.0
[INFO] [stderr]     Checking libimagentrylist v0.3.0
[INFO] [stderr]  Documenting libimagref v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.00s
[INFO] running `Command { std: "docker" "inspect" "83b06a873dd0d71bb2f654188822254497a96aaeac3a3bec224ad7895e5a6059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83b06a873dd0d71bb2f654188822254497a96aaeac3a3bec224ad7895e5a6059", kill_on_drop: false }`
[INFO] [stdout] 83b06a873dd0d71bb2f654188822254497a96aaeac3a3bec224ad7895e5a6059