[INFO] updating cached repository https://github.com/xfbs/xar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2793f9b098266db45daa8f5f335ed05bbc7ceed
[INFO] documenting xfbs/xar against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfbs%2Fxar" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xfbs/xar 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 git repo https://github.com/xfbs/xar
[INFO] finished tweaking git repo https://github.com/xfbs/xar
[INFO] tweaked toml for git repo https://github.com/xfbs/xar written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/xfbs/xar 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 1010a457c68536b78f26efe94518ad3396b52f5d63598cbf97c5b80a1fdb2fbd
[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" "1010a457c68536b78f26efe94518ad3396b52f5d63598cbf97c5b80a1fdb2fbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1010a457c68536b78f26efe94518ad3396b52f5d63598cbf97c5b80a1fdb2fbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1010a457c68536b78f26efe94518ad3396b52f5d63598cbf97c5b80a1fdb2fbd", kill_on_drop: false }`
[INFO] [stdout] 1010a457c68536b78f26efe94518ad3396b52f5d63598cbf97c5b80a1fdb2fbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 06316fdd6299153860805a0d70ac99e8af817a61f2effade7efafd91b1be9b12
[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" "06316fdd6299153860805a0d70ac99e8af817a61f2effade7efafd91b1be9b12", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling encoding_rs v0.8.17
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]     Checking rustc-demangle v0.1.15
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]     Checking libflate v0.1.23
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking xmltree v0.8.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking quick-xml v0.14.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]  Documenting xar v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.42s
[INFO] running `Command { std: "docker" "inspect" "06316fdd6299153860805a0d70ac99e8af817a61f2effade7efafd91b1be9b12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06316fdd6299153860805a0d70ac99e8af817a61f2effade7efafd91b1be9b12", kill_on_drop: false }`
[INFO] [stdout] 06316fdd6299153860805a0d70ac99e8af817a61f2effade7efafd91b1be9b12