[INFO] fetching crate proc-mounts 0.2.4...
[INFO] documenting proc-mounts-0.2.4 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate proc-mounts 0.2.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate proc-mounts 0.2.4 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 proc-mounts 0.2.4
[INFO] finished tweaking crates.io crate proc-mounts 0.2.4
[INFO] tweaked toml for crates.io crate proc-mounts 0.2.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate proc-mounts 0.2.4 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]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.10
[INFO] [stderr]   Downloaded err-derive v0.2.4
[INFO] [stderr]   Downloaded partition-identity v0.2.8
[INFO] [stderr]   Downloaded synstructure v0.12.3
[INFO] [stderr]   Downloaded rustversion v1.0.2
[INFO] [stderr]   Downloaded proc-macro-error-attr v1.0.2
[INFO] [stderr]   Downloaded version_check v0.9.1
[INFO] [stderr]   Downloaded unicode-xid v0.2.0
[INFO] [stderr]   Downloaded quote v1.0.3
[INFO] [stderr]   Downloaded lazy_static v1.4.0
[INFO] [stderr]   Downloaded syn v1.0.17
[INFO] [stderr]   Downloaded syn-mid v0.5.0
[INFO] [stderr]   Downloaded proc-macro-error v1.0.2
[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] [stdout] 23196ab253a48d78bd050f5a4695e68602e46eb761a4f7d36aeedaf29b9c8c60
[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" "23196ab253a48d78bd050f5a4695e68602e46eb761a4f7d36aeedaf29b9c8c60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23196ab253a48d78bd050f5a4695e68602e46eb761a4f7d36aeedaf29b9c8c60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23196ab253a48d78bd050f5a4695e68602e46eb761a4f7d36aeedaf29b9c8c60", kill_on_drop: false }`
[INFO] [stdout] 23196ab253a48d78bd050f5a4695e68602e46eb761a4f7d36aeedaf29b9c8c60
[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] 33de5d18a30c7cd6b7fd670037485caaaaca26afb7c27b15b26c0c2214c45237
[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" "33de5d18a30c7cd6b7fd670037485caaaaca26afb7c27b15b26c0c2214c45237", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]     Checking partition-identity v0.2.8
[INFO] [stderr]  Documenting proc-mounts v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.48s
[INFO] running `Command { std: "docker" "inspect" "33de5d18a30c7cd6b7fd670037485caaaaca26afb7c27b15b26c0c2214c45237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33de5d18a30c7cd6b7fd670037485caaaaca26afb7c27b15b26c0c2214c45237", kill_on_drop: false }`
[INFO] [stdout] 33de5d18a30c7cd6b7fd670037485caaaaca26afb7c27b15b26c0c2214c45237