[INFO] fetching crate serde_var_export 0.1.0...
[INFO] documenting serde_var_export-0.1.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate serde_var_export 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate serde_var_export 0.1.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_var_export 0.1.0
[INFO] finished tweaking crates.io crate serde_var_export 0.1.0
[INFO] tweaked toml for crates.io crate serde_var_export 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate serde_var_export 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cd93aebc8b54924cb85ebe8736f219077b4d7c9ca516b3a36dafe3f05039feb
[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" "4cd93aebc8b54924cb85ebe8736f219077b4d7c9ca516b3a36dafe3f05039feb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cd93aebc8b54924cb85ebe8736f219077b4d7c9ca516b3a36dafe3f05039feb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cd93aebc8b54924cb85ebe8736f219077b4d7c9ca516b3a36dafe3f05039feb", kill_on_drop: false }`
[INFO] [stdout] 4cd93aebc8b54924cb85ebe8736f219077b4d7c9ca516b3a36dafe3f05039feb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24e249d228ada4bf255669bb736e6b3d3f3e453ffcd5a95a177820c8e08b4858
[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" "24e249d228ada4bf255669bb736e6b3d3f3e453ffcd5a95a177820c8e08b4858", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling thiserror-impl v1.0.9
[INFO] [stderr]     Checking thiserror v1.0.9
[INFO] [stderr]  Documenting serde_var_export v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.03s
[INFO] running `Command { std: "docker" "inspect" "24e249d228ada4bf255669bb736e6b3d3f3e453ffcd5a95a177820c8e08b4858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e249d228ada4bf255669bb736e6b3d3f3e453ffcd5a95a177820c8e08b4858", kill_on_drop: false }`
[INFO] [stdout] 24e249d228ada4bf255669bb736e6b3d3f3e453ffcd5a95a177820c8e08b4858
