[INFO] cloning repository https://github.com/matterinc/plasma_winter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matterinc/plasma_winter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatterinc%2Fplasma_winter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatterinc%2Fplasma_winter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 923297a9ac6bae1a2923b36354686ed5b824949e
[INFO] documenting matterinc/plasma_winter against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatterinc%2Fplasma_winter" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matterinc/plasma_winter on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matterinc/plasma_winter
[INFO] finished tweaking git repo https://github.com/matterinc/plasma_winter
[INFO] tweaked toml for git repo https://github.com/matterinc/plasma_winter written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/matterinc/plasma_winter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/matterinc/bellman`
[INFO] [stderr]     Updating git repository `https://github.com/matterinc/pairing`
[INFO] [stderr]     Updating git repository `https://github.com/matterinc/sapling-crypto`
[INFO] [stderr]     Updating git repository `https://github.com/tomusdrw/rust-web3`
[INFO] [stderr]     Updating git repository `https://github.com/gtank/blake2-rfc`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cd6c4a4f19cf996035f3f2201f2f60b7a244df16c1a029f8f2aa060060ba033
[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" "7cd6c4a4f19cf996035f3f2201f2f60b7a244df16c1a029f8f2aa060060ba033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cd6c4a4f19cf996035f3f2201f2f60b7a244df16c1a029f8f2aa060060ba033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cd6c4a4f19cf996035f3f2201f2f60b7a244df16c1a029f8f2aa060060ba033", kill_on_drop: false }`
[INFO] [stdout] 7cd6c4a4f19cf996035f3f2201f2f60b7a244df16c1a029f8f2aa060060ba033
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e84c225f425ddc5cc1696f1d442f8aaeda48c67398ac4e36487a30baac53cbe
[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" "3e84c225f425ddc5cc1696f1d442f8aaeda48c67398ac4e36487a30baac53cbe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.81
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]    Compiling openssl v0.10.15
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling encoding_rs v0.8.13
[INFO] [stderr]     Checking rustc-hex v1.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.1
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling secp256k1 v0.11.5
[INFO] [stderr]     Checking tower-service v0.1.0
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling openssl-sys v0.9.39
[INFO] [stderr]    Compiling actix-web v0.7.15
[INFO] [stderr]     Checking signal-hook v0.1.6
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking pbr v1.0.1
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking tokio-timer v0.2.8
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking brotli-sys v0.3.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking libflate v0.1.19
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking flate2 v1.0.6
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking blake2-rfc v0.2.18 (https://github.com/gtank/blake2-rfc?rev=7a5b5fc99ae483a0043db7547fb79a6fa44b88a9#7a5b5fc9)
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking http v0.1.14
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]     Checking crossbeam-deque v0.6.2
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking fixed-hash v0.2.5
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]     Checking elastic-array v0.10.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking parking_lot v0.7.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking crossbeam-channel v0.3.2
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.3
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[INFO] [stderr]     Checking crossbeam v0.5.0
[INFO] [stderr]     Checking tokio v0.1.13
[INFO] [stderr]     Checking h2 v0.1.14
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]    Compiling ff_derive v0.3.0
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking tokio-uds v0.1.7
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking tokio-tls v0.2.0
[INFO] [stderr]     Checking websocket v0.21.1
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking serde_json v1.0.33
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]     Checking ethbloom v0.5.0
[INFO] [stderr]     Checking hyper v0.12.17
[INFO] [stderr]     Checking ethereum-types v0.4.0
[INFO] [stderr]     Checking ff v0.4.0
[INFO] [stderr]     Checking pairing v0.15.0 (https://github.com/matterinc/pairing#1363d021)
[INFO] [stderr]    Compiling serde_derive v1.0.81
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]     Checking rlp v0.2.4
[INFO] [stderr]     Checking rlp v0.3.0
[INFO] [stderr]     Checking hyper-tls v0.3.1
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking reqwest v0.9.5
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking bellman v0.1.1 (https://github.com/matterinc/bellman#e544678a)
[INFO] [stderr]     Checking sapling-crypto v0.0.2 (https://github.com/matterinc/sapling-crypto#97b0b901)
[INFO] [stderr]     Checking trust-dns-resolver v0.10.0
[INFO] [stderr]     Checking actix v0.7.8
[INFO] [stderr]     Checking actix-net v0.2.4
[INFO] [stderr]     Checking ethabi v6.1.0
[INFO] [stderr]     Checking jsonrpc-core v8.0.1
[INFO] [stderr]     Checking ethereum-tx-sign v0.0.2
[INFO] [stderr]     Checking web3 v0.5.1 (https://github.com/tomusdrw/rust-web3#8a2cfff9)
[INFO] [stderr]     Checking plasma v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting plasma v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/baby_prover.rs:92:35
[INFO] [stdout]    |
[INFO] [stdout] 92 |     pub fn create(initial_state: &State<Bn256>) ->
[INFO] [stdout]    |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn State<Bn256>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/account_manager/rest_api.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 | type BoxFut = Box<Future<Item = Response<Body>, Error = hyper::Error> + Send>;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Response<Body>, Error = hyper::Error> + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/eth/mod.rs:22:45
[INFO] [stdout]    |
[INFO] [stdout] 22 | type Result<T> = std::result::Result<T, Box<std::error::Error>>;
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/server/demo_server/rest_api.rs:74:57
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn send_transaction(req: &HttpRequest<AppState>) -> Box<Future<Item = HttpResponse, Error = Error>> {
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = HttpResponse, Error = Error>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/server/baby_prover.rs:55:34
[INFO] [stdout]    |
[INFO] [stdout] 55 |             write!(f, "{}", self.description())
[INFO] [stdout]    |                                  ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/server/baby_prover.rs:245:17
[INFO] [stdout]     |
[INFO] [stdout] 245 |             let mut tree = & mut self.accounts_tree;
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/server/baby_prover.rs:246:17
[INFO] [stdout]     |
[INFO] [stdout] 246 |             let mut items = tree.items.clone();
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/server/baby_prover.rs:290:17
[INFO] [stdout]     |
[INFO] [stdout] 290 |             let mut transaction : Transaction<Bn256> = Transaction {
[INFO] [stdout]     |                 ----^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]   --> src/server/eth/signer.rs:73:22
[INFO] [stdout]    |
[INFO] [stdout] 73 |     keccak256(bytes).into_iter().cloned().collect()
[INFO] [stdout]    |                      ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `plasma`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name server src/bin/server.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern actix=/opt/rustwide/target/debug/deps/libactix-591f3bcf879e4c0f.rmeta --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-a94feacadf5f0f3b.rmeta --extern bellman=/opt/rustwide/target/debug/deps/libbellman-a90becd234667ffa.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-952252aad9c48237.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-d1ab1b7d7dcac61f.rmeta --extern ethabi=/opt/rustwide/target/debug/deps/libethabi-8d0680935c57f906.rmeta --extern ethereum_tx_sign=/opt/rustwide/target/debug/deps/libethereum_tx_sign-67edc13cdf4f1833.rmeta --extern ethereum_types=/opt/rustwide/target/debug/deps/libethereum_types-cb217e78de3d47dc.rmeta --extern ff=/opt/rustwide/target/debug/deps/libff-8d32895607975922.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-0cf272d97adbcba7.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-cf2af106ce6675af.rmeta --extern futures_cpupool=/opt/rustwide/target/debug/deps/libfutures_cpupool-d87cd6bbb636094d.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-cbe711c317509ff5.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-190a1edec9d8a29e.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-7ca974243b732e3b.rmeta --extern pairing=/opt/rustwide/target/debug/deps/libpairing-bed7ba456d2ae423.rmeta --extern plasma=/opt/rustwide/target/debug/deps/libplasma-91f016d8bb8e461e.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-6f1b367e30e3b604.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-ef2ad8c72e9f699c.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-2cc58eebe7d87569.rmeta --extern rlp=/opt/rustwide/target/debug/deps/librlp-a1637c546258e005.rmeta --extern crypto=/opt/rustwide/target/debug/deps/libcrypto-ab19a6d519e02cf7.rmeta --extern rustc_hex=/opt/rustwide/target/debug/deps/librustc_hex-03cf6c956dad267a.rmeta --extern sapling_crypto=/opt/rustwide/target/debug/deps/libsapling_crypto-d64cfbba1691751b.rmeta --extern secp256k1=/opt/rustwide/target/debug/deps/libsecp256k1-1e8186d9b0f559ec.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-26420805fc72e420.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-c7045ff9bb75da79.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c01a677e5b032f07.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-cb58bbfd8d5012ac.rmeta --extern tiny_keccak=/opt/rustwide/target/debug/deps/libtiny_keccak-16ff7ede3e00a027.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-508e96b2061e6a0e.rmeta --extern web3=/opt/rustwide/target/debug/deps/libweb3-1c1cedf3437d3927.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3e84c225f425ddc5cc1696f1d442f8aaeda48c67398ac4e36487a30baac53cbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e84c225f425ddc5cc1696f1d442f8aaeda48c67398ac4e36487a30baac53cbe", kill_on_drop: false }`
[INFO] [stdout] 3e84c225f425ddc5cc1696f1d442f8aaeda48c67398ac4e36487a30baac53cbe
