[INFO] fetching crate unison-fsmonitor 0.2.7...
[INFO] documenting unison-fsmonitor-0.2.7 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate unison-fsmonitor 0.2.7 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate unison-fsmonitor 0.2.7 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 unison-fsmonitor 0.2.7
[INFO] finished tweaking crates.io crate unison-fsmonitor 0.2.7
[INFO] tweaked toml for crates.io crate unison-fsmonitor 0.2.7 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate unison-fsmonitor 0.2.7 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 notify v4.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 8645409d3b77f0bff072c06d58ba343ddd4bf4059d624db1c4759ef19a723952
[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" "8645409d3b77f0bff072c06d58ba343ddd4bf4059d624db1c4759ef19a723952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8645409d3b77f0bff072c06d58ba343ddd4bf4059d624db1c4759ef19a723952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8645409d3b77f0bff072c06d58ba343ddd4bf4059d624db1c4759ef19a723952", kill_on_drop: false }`
[INFO] [stdout] 8645409d3b77f0bff072c06d58ba343ddd4bf4059d624db1c4759ef19a723952
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] a4f64f6bcde446aa1b49ae6a7cf37a83149bb004ebb311bb4e32ee09d798d42f
[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" "a4f64f6bcde446aa1b49ae6a7cf37a83149bb004ebb311bb4e32ee09d798d42f", kill_on_drop: false }`
[INFO] [stderr]     Checking lazycell v1.2.0
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking futures v0.1.25
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.1
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]     Checking tokio-executor v0.1.5
[INFO] [stderr]     Checking tokio-io v0.1.9
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]     Checking notify v4.0.6
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]  Documenting unison-fsmonitor v0.2.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.56s
[INFO] running `Command { std: "docker" "inspect" "a4f64f6bcde446aa1b49ae6a7cf37a83149bb004ebb311bb4e32ee09d798d42f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4f64f6bcde446aa1b49ae6a7cf37a83149bb004ebb311bb4e32ee09d798d42f", kill_on_drop: false }`
[INFO] [stdout] a4f64f6bcde446aa1b49ae6a7cf37a83149bb004ebb311bb4e32ee09d798d42f