[INFO] cloning repository https://github.com/xfbs/xar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xfbs/xar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfbs%2Fxar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfbs%2Fxar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2793f9b098266db45daa8f5f335ed05bbc7ceed
[INFO] documenting xfbs/xar against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxfbs%2Fxar" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xfbs/xar on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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-8/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" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libflate v0.1.23
[INFO] [stderr]   Downloaded syn v0.15.35
[INFO] [stderr]   Downloaded quick-xml v0.14.0
[INFO] [stderr]   Downloaded xmltree v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95d3107b88b4fbf1635dbc2052d736e807896a21d4c184643ed7b79ae70a1bdd
[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" "95d3107b88b4fbf1635dbc2052d736e807896a21d4c184643ed7b79ae70a1bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95d3107b88b4fbf1635dbc2052d736e807896a21d4c184643ed7b79ae70a1bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95d3107b88b4fbf1635dbc2052d736e807896a21d4c184643ed7b79ae70a1bdd", kill_on_drop: false }`
[INFO] [stdout] 95d3107b88b4fbf1635dbc2052d736e807896a21d4c184643ed7b79ae70a1bdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] 5a48a6b666ff742b8be7d6e0e81be86d9fbd98eea66f1bb753a221afc104c554
[INFO] running `Command { std: "docker" "start" "-a" "5a48a6b666ff742b8be7d6e0e81be86d9fbd98eea66f1bb753a221afc104c554", kill_on_drop: false }`
[INFO] [stderr]     Checking libflate v0.1.23
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking xmltree v0.8.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking quick-xml v0.14.0
[INFO] [stderr]  Documenting xar v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.13s
[INFO] running `Command { std: "docker" "inspect" "5a48a6b666ff742b8be7d6e0e81be86d9fbd98eea66f1bb753a221afc104c554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a48a6b666ff742b8be7d6e0e81be86d9fbd98eea66f1bb753a221afc104c554", kill_on_drop: false }`
[INFO] [stdout] 5a48a6b666ff742b8be7d6e0e81be86d9fbd98eea66f1bb753a221afc104c554