[INFO] cloning repository https://github.com/jackpot51/artifact-data
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jackpot51/artifact-data" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackpot51%2Fartifact-data", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackpot51%2Fartifact-data'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01cba6fbaee50b8c1f8d48d5a38fe8beeba14710
[INFO] documenting jackpot51/artifact-data 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%2Fjackpot51%2Fartifact-data" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jackpot51/artifact-data 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/jackpot51/artifact-data
[INFO] finished tweaking git repo https://github.com/jackpot51/artifact-data
[INFO] tweaked toml for git repo https://github.com/jackpot51/artifact-data written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jackpot51/artifact-data 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]     Updating git repository `https://github.com/withoutboats/failure`
[INFO] [stderr]     Updating git repository `https://github.com/withoutboats/failure_derive`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.20
[INFO] [stderr]   Downloaded prelude v0.2.0
[INFO] [stderr]   Downloaded serde v1.0.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 1c4dddbfd059119ab7c4ad86d6b6b4a96a5f6905a29a11632a443e58e1b4dda3
[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" "1c4dddbfd059119ab7c4ad86d6b6b4a96a5f6905a29a11632a443e58e1b4dda3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c4dddbfd059119ab7c4ad86d6b6b4a96a5f6905a29a11632a443e58e1b4dda3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c4dddbfd059119ab7c4ad86d6b6b4a96a5f6905a29a11632a443e58e1b4dda3", kill_on_drop: false }`
[INFO] [stdout] 1c4dddbfd059119ab7c4ad86d6b6b4a96a5f6905a29a11632a443e58e1b4dda3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] 5967df8f718de28c75c8e14671956ef7d48e1b1998fb4fbb4d37d3e5013aeeb0
[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" "5967df8f718de28c75c8e14671956ef7d48e1b1998fb4fbb4d37d3e5013aeeb0", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]     Checking lazy_static v0.2.10
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking serde v1.0.20
[INFO] [stderr]     Checking prelude v0.2.0
[INFO] [stderr]    Compiling serde_derive_internals v0.17.0
[INFO] [stderr]    Compiling failure_derive v0.1.0 (https://github.com/withoutboats/failure_derive#e12732b4)
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]    Compiling serde_derive v1.0.20
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking backtrace v0.3.3
[INFO] [stderr]     Checking failure v0.0.1 (https://github.com/withoutboats/failure#ae276f58)
[INFO] [stderr]  Documenting artifact-data v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.78s
[INFO] running `Command { std: "docker" "inspect" "5967df8f718de28c75c8e14671956ef7d48e1b1998fb4fbb4d37d3e5013aeeb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5967df8f718de28c75c8e14671956ef7d48e1b1998fb4fbb4d37d3e5013aeeb0", kill_on_drop: false }`
[INFO] [stdout] 5967df8f718de28c75c8e14671956ef7d48e1b1998fb4fbb4d37d3e5013aeeb0