[INFO] fetching crate customasm 0.10.6...
[INFO] documenting customasm-0.10.6 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate customasm 0.10.6 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate customasm 0.10.6 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate customasm 0.10.6
[INFO] finished tweaking crates.io crate customasm 0.10.6
[INFO] tweaked toml for crates.io crate customasm 0.10.6 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate customasm 0.10.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6bdc160786ddbff1e7fd705ebc5a1e9ea416fc67ceec7134a776b790c2ab145b
[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" "6bdc160786ddbff1e7fd705ebc5a1e9ea416fc67ceec7134a776b790c2ab145b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bdc160786ddbff1e7fd705ebc5a1e9ea416fc67ceec7134a776b790c2ab145b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bdc160786ddbff1e7fd705ebc5a1e9ea416fc67ceec7134a776b790c2ab145b", kill_on_drop: false }`
[INFO] [stdout] 6bdc160786ddbff1e7fd705ebc5a1e9ea416fc67ceec7134a776b790c2ab145b
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 705031eef7f808ce960acfc62e547fe5d335c3e6a881b900172f671e71c785b0
[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" "705031eef7f808ce960acfc62e547fe5d335c3e6a881b900172f671e71c785b0", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking getopts v0.2.17
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]  Documenting customasm v0.10.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.17s
[INFO] running `Command { std: "docker" "inspect" "705031eef7f808ce960acfc62e547fe5d335c3e6a881b900172f671e71c785b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "705031eef7f808ce960acfc62e547fe5d335c3e6a881b900172f671e71c785b0", kill_on_drop: false }`
[INFO] [stdout] 705031eef7f808ce960acfc62e547fe5d335c3e6a881b900172f671e71c785b0