[INFO] fetching crate data_chain 0.1.1...
[INFO] documenting data_chain-0.1.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate data_chain 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate data_chain 0.1.1 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 data_chain 0.1.1
[INFO] finished tweaking crates.io crate data_chain 0.1.1
[INFO] tweaked toml for crates.io crate data_chain 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 sha1 v0.1.1
[INFO] [stderr]   Downloaded libsodium-sys v0.0.16
[INFO] [stderr]   Downloaded sodiumoxide v0.0.16
[INFO] [stderr]   Downloaded rayon v0.4.3
[INFO] [stderr]   Downloaded maidsafe_utilities v0.5.4
[INFO] [stderr]   Downloaded ws v0.4.8
[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] 2febe7fb0c74e9bd47cb652b136639b009fa80af1034c96afe46b922c429cec8
[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" "2febe7fb0c74e9bd47cb652b136639b009fa80af1034c96afe46b922c429cec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2febe7fb0c74e9bd47cb652b136639b009fa80af1034c96afe46b922c429cec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2febe7fb0c74e9bd47cb652b136639b009fa80af1034c96afe46b922c429cec8", kill_on_drop: false }`
[INFO] [stdout] 2febe7fb0c74e9bd47cb652b136639b009fa80af1034c96afe46b922c429cec8
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f8c3bf3e93bbbdbf8d96aa4903cc262e8b7c966025608a60b6d23b9342d7fa80
[INFO] running `Command { std: "docker" "start" "-a" "f8c3bf3e93bbbdbf8d96aa4903cc262e8b7c966025608a60b6d23b9342d7fa80", kill_on_drop: false }`
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]     Checking deque v0.3.2
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking toml v0.1.30
[INFO] [stderr]    Compiling libsodium-sys v0.0.16
[INFO] [stderr]     Checking sha1 v0.1.1
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking rayon v0.4.3
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking log4rs v0.3.3
[INFO] [stderr]     Checking sodiumoxide v0.0.16
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]     Checking ws v0.4.8
[INFO] [stderr]     Checking maidsafe_utilities v0.5.4
[INFO] [stderr]  Documenting data_chain v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/data_chain.rs:285:42
[INFO] [stdout]     |
[INFO] [stdout] 285 |         self.chain.iter_mut().rev().find((|x| x.identifier().is_link() && x.valid))
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:227:46
[INFO] [stdout]     |
[INFO] [stdout] 227 |         unused_comparisons, unused_features, unused_parens, while_true)]
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown attribute `norun`. Did you mean `no_run`?
[INFO] [stdout]    --> src/lib.rs:26:1
[INFO] [stdout]     |
[INFO] [stdout] 26  | / //! #data_chain
[INFO] [stdout] 27  | | //! Data blocks can be chained to provide verifiable assuredness that they contain network valid
[INFO] [stdout] 28  | | //! data and not injected.
[INFO] [stdout] 29  | | //!
[INFO] [stdout] ...   |
[INFO] [stdout] 211 | | //! [1]: https://github.com/dirvine/data_chain/tree/master
[INFO] [stdout] 212 | | //! [3]: https://github.com/dirvine/data_chain/blob/master/docs/0029-data-blocks.md
[INFO] [stdout]     | |___________________________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:222:32
[INFO] [stdout]     |
[INFO] [stdout] 222 |           unknown_crate_types, warnings)]
[INFO] [stdout]     |                                ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(invalid_codeblock_attributes)]` implied by `#[warn(warnings)]`
[INFO] [stdout]     = help: the code block will either not be tested if not marked as a rust one or will be run (which you might not want)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.80s
[INFO] running `Command { std: "docker" "inspect" "f8c3bf3e93bbbdbf8d96aa4903cc262e8b7c966025608a60b6d23b9342d7fa80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8c3bf3e93bbbdbf8d96aa4903cc262e8b7c966025608a60b6d23b9342d7fa80", kill_on_drop: false }`
[INFO] [stdout] f8c3bf3e93bbbdbf8d96aa4903cc262e8b7c966025608a60b6d23b9342d7fa80