[INFO] fetching crate erdos 0.3.0...
[INFO] documenting erdos-0.3.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate erdos 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate erdos 0.3.0 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 erdos 0.3.0
[INFO] finished tweaking crates.io crate erdos 0.3.0
[INFO] tweaked toml for crates.io crate erdos 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate erdos 0.3.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded inventory-impl v0.1.5
[INFO] [stderr]   Downloaded ctor v0.1.13
[INFO] [stderr]   Downloaded slog v2.5.2
[INFO] [stderr]   Downloaded serde_derive v1.0.105
[INFO] [stderr]   Downloaded abomonation v0.7.3
[INFO] [stderr]   Downloaded abomonation_derive v0.5.0
[INFO] [stderr]   Downloaded criterion v0.3.1
[INFO] [stderr]   Downloaded async-trait v0.1.24
[INFO] [stderr]   Downloaded tokio-serde v0.3.0
[INFO] [stderr]   Downloaded criterion-plot v0.4.1
[INFO] [stderr]   Downloaded redox_users v0.3.4
[INFO] [stderr]   Downloaded indoc-impl v0.3.4
[INFO] [stderr]   Downloaded unindent v0.1.5
[INFO] [stderr]   Downloaded oorandom v11.1.0
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.12
[INFO] [stderr]   Downloaded tokio-serde-bincode v0.2.1
[INFO] [stderr]   Downloaded libc v0.2.68
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.8.5
[INFO] [stderr]   Downloaded pyo3cls v0.8.5
[INFO] [stderr]   Downloaded indoc v0.3.4
[INFO] [stderr]   Downloaded tinytemplate v1.0.3
[INFO] [stderr]   Downloaded paste-impl v0.1.7
[INFO] [stderr]   Downloaded plotters v0.2.12
[INFO] [stderr]   Downloaded criterion-macro v0.3.1
[INFO] [stderr]   Downloaded inventory v0.1.5
[INFO] [stderr]   Downloaded ghost v0.1.1
[INFO] [stderr]   Downloaded regex v1.3.5
[INFO] [stderr]   Downloaded pyo3 v0.8.5
[INFO] [stderr]   Downloaded paste v0.1.7
[INFO] [stderr]   Downloaded rust-argon2 v0.7.0
[INFO] [stderr]   Downloaded slog-term v2.5.0
[INFO] [stderr]   Downloaded dirs-sys v0.3.4
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded bincode v1.2.1
[INFO] [stderr]   Downloaded serde v1.0.105
[INFO] [stderr]   Downloaded bstr v0.2.12
[INFO] [stderr]   Downloaded hermit-abi v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] df3b72e980d1809c10171006f5cfa7e1db7b0cd55a19bce8ec9470d4eb993673
[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" "df3b72e980d1809c10171006f5cfa7e1db7b0cd55a19bce8ec9470d4eb993673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df3b72e980d1809c10171006f5cfa7e1db7b0cd55a19bce8ec9470d4eb993673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df3b72e980d1809c10171006f5cfa7e1db7b0cd55a19bce8ec9470d4eb993673", kill_on_drop: false }`
[INFO] [stdout] df3b72e980d1809c10171006f5cfa7e1db7b0cd55a19bce8ec9470d4eb993673
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] aa690364aef070df8e9fc992d1c3b02f2603308817e6f7a1c13b9b950e67693a
[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" "aa690364aef070df8e9fc992d1c3b02f2603308817e6f7a1c13b9b950e67693a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking petgraph v0.5.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking tokio-serde v0.3.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking slog-term v2.5.0
[INFO] [stderr]    Compiling erdos v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling proc-macro-hack v0.5.12
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking tokio-serde-bincode v0.2.1
[INFO] [stderr]  Documenting erdos v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:153:1
[INFO] [stdout]     |
[INFO] [stdout] 153 | #![feature(get_mut_unchecked)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:154:1
[INFO] [stdout]     |
[INFO] [stdout] 154 | #![feature(specialization)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:155:1
[INFO] [stdout]     |
[INFO] [stdout] 155 | #![feature(box_into_pin)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `erdos`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type rlib --crate-type cdylib --crate-name erdos src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern abomonation=/opt/rustwide/target/debug/deps/libabomonation-bcefed56adfd9128.rmeta --extern abomonation_derive=/opt/rustwide/target/debug/deps/libabomonation_derive-c1b60ce1a5cbba6a.so --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-2ca3180ac322e405.so --extern bincode=/opt/rustwide/target/debug/deps/libbincode-8a3e4f91fb63d4cd.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-364c148656283980.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-698f4871cab58c10.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-6b67864dd90da446.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-fb4a80adc6d97b0c.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-4a5bc2901c1998c2.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-838346e87e697c78.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-13f8ea2f1e73baa5.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-a3d225fa32e8bf43.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-e72c3bd4498bdb8c.rmeta --extern slog_term=/opt/rustwide/target/debug/deps/libslog_term-5b28f8211cbdebd1.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-e0d06eddb7fa3595.rmeta --extern tokio_serde_bincode=/opt/rustwide/target/debug/deps/libtokio_serde_bincode-7921f25ce78a89f1.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-f56ff607813049bc.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-ef4bc2cd8a1955c2.rmeta --cap-lints=warn --crate-version 0.3.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "aa690364aef070df8e9fc992d1c3b02f2603308817e6f7a1c13b9b950e67693a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa690364aef070df8e9fc992d1c3b02f2603308817e6f7a1c13b9b950e67693a", kill_on_drop: false }`
[INFO] [stdout] aa690364aef070df8e9fc992d1c3b02f2603308817e6f7a1c13b9b950e67693a