[INFO] fetching crate js-promises 0.1.0...
[INFO] documenting js-promises-0.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate js-promises 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate js-promises 0.1.0 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 crates.io crate js-promises 0.1.0
[INFO] finished tweaking crates.io crate js-promises 0.1.0
[INFO] tweaked toml for crates.io crate js-promises 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate js-promises 0.1.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 3cb3ba0d3c18494d301005d5a6bfef4c34a3f2730fe814e8acc5b8c421b5e447
[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" "3cb3ba0d3c18494d301005d5a6bfef4c34a3f2730fe814e8acc5b8c421b5e447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cb3ba0d3c18494d301005d5a6bfef4c34a3f2730fe814e8acc5b8c421b5e447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cb3ba0d3c18494d301005d5a6bfef4c34a3f2730fe814e8acc5b8c421b5e447", kill_on_drop: false }`
[INFO] [stdout] 3cb3ba0d3c18494d301005d5a6bfef4c34a3f2730fe814e8acc5b8c421b5e447
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 1448ec8b2a23b7138fa0b7bdb43cd8f3e04b83365f936fd03f78087b2f068497
[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" "1448ec8b2a23b7138fa0b7bdb43cd8f3e04b83365f936fd03f78087b2f068497", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.5
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling base-x v0.2.5
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]     Checking discard v1.0.4
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling stdweb-derive v0.5.3
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.9
[INFO] [stderr]  Documenting js-promises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.47s
[INFO] running `Command { std: "docker" "inspect" "1448ec8b2a23b7138fa0b7bdb43cd8f3e04b83365f936fd03f78087b2f068497", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1448ec8b2a23b7138fa0b7bdb43cd8f3e04b83365f936fd03f78087b2f068497", kill_on_drop: false }`
[INFO] [stdout] 1448ec8b2a23b7138fa0b7bdb43cd8f3e04b83365f936fd03f78087b2f068497