[INFO] fetching crate failure 0.1.8...
[INFO] documenting failure-0.1.8 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate failure 0.1.8 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate failure 0.1.8 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate failure 0.1.8
[INFO] finished tweaking crates.io crate failure 0.1.8
[INFO] tweaked toml for crates.io crate failure 0.1.8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate failure 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5984965d8c60c32e14a38a2fb00c4ac8ad027d201e446138f74d6b1818bb26df
[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" "5984965d8c60c32e14a38a2fb00c4ac8ad027d201e446138f74d6b1818bb26df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5984965d8c60c32e14a38a2fb00c4ac8ad027d201e446138f74d6b1818bb26df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5984965d8c60c32e14a38a2fb00c4ac8ad027d201e446138f74d6b1818bb26df", kill_on_drop: false }`
[INFO] [stdout] 5984965d8c60c32e14a38a2fb00c4ac8ad027d201e446138f74d6b1818bb26df
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9512fb253519a0bd59a8a0787a1f63bec89206f53ea36b45b5e8ef26db566e23
[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" "9512fb253519a0bd59a8a0787a1f63bec89206f53ea36b45b5e8ef26db566e23", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]  Documenting failure v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.76s
[INFO] running `Command { std: "docker" "inspect" "9512fb253519a0bd59a8a0787a1f63bec89206f53ea36b45b5e8ef26db566e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9512fb253519a0bd59a8a0787a1f63bec89206f53ea36b45b5e8ef26db566e23", kill_on_drop: false }`
[INFO] [stdout] 9512fb253519a0bd59a8a0787a1f63bec89206f53ea36b45b5e8ef26db566e23
