[INFO] cloning repository https://github.com/mparker17/csv-matrix-mirror
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mparker17/csv-matrix-mirror" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmparker17%2Fcsv-matrix-mirror", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmparker17%2Fcsv-matrix-mirror'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d335fc2bea3fa5bec4ec37362565d14913f00ae4
[INFO] documenting mparker17/csv-matrix-mirror 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%2Fmparker17%2Fcsv-matrix-mirror" "/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/mparker17/csv-matrix-mirror 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/mparker17/csv-matrix-mirror
[INFO] finished tweaking git repo https://github.com/mparker17/csv-matrix-mirror
[INFO] tweaked toml for git repo https://github.com/mparker17/csv-matrix-mirror written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mparker17/csv-matrix-mirror 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] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 quick-csv v0.1.6
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a5b0627b4473efa3e27fd6d96b741c08c83d3ce0c30d3ba8c2f01fc448046694
[INFO] running `Command { std: "docker" "start" "-a" "a5b0627b4473efa3e27fd6d96b741c08c83d3ce0c30d3ba8c2f01fc448046694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5b0627b4473efa3e27fd6d96b741c08c83d3ce0c30d3ba8c2f01fc448046694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5b0627b4473efa3e27fd6d96b741c08c83d3ce0c30d3ba8c2f01fc448046694", kill_on_drop: false }`
[INFO] [stdout] a5b0627b4473efa3e27fd6d96b741c08c83d3ce0c30d3ba8c2f01fc448046694
[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" "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] 1fb0e4b17d4433d079e9ee19b62c76c0984e14220579dc5d0a73d5a7f9e5020e
[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" "1fb0e4b17d4433d079e9ee19b62c76c0984e14220579dc5d0a73d5a7f9e5020e", kill_on_drop: false }`
[INFO] [stderr]     Checking quick-csv v0.1.6
[INFO] [stderr]  Documenting csv-matrix-mirror v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "1fb0e4b17d4433d079e9ee19b62c76c0984e14220579dc5d0a73d5a7f9e5020e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fb0e4b17d4433d079e9ee19b62c76c0984e14220579dc5d0a73d5a7f9e5020e", kill_on_drop: false }`
[INFO] [stdout] 1fb0e4b17d4433d079e9ee19b62c76c0984e14220579dc5d0a73d5a7f9e5020e