[INFO] crate jsonrpc-core 9.0.0 is already in cache
[INFO] extracting crate jsonrpc-core 9.0.0 into work/ex/clippy-test-run/sources/stable/reg/jsonrpc-core/9.0.0
[INFO] extracting crate jsonrpc-core 9.0.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/jsonrpc-core/9.0.0
[INFO] validating manifest of jsonrpc-core-9.0.0 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jsonrpc-core-9.0.0 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jsonrpc-core-9.0.0
[INFO] finished frobbing jsonrpc-core-9.0.0
[INFO] frobbed toml for jsonrpc-core-9.0.0 written to work/ex/clippy-test-run/sources/stable/reg/jsonrpc-core/9.0.0/Cargo.toml
[INFO] started frobbing jsonrpc-core-9.0.0
[INFO] finished frobbing jsonrpc-core-9.0.0
[INFO] frobbed toml for jsonrpc-core-9.0.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/jsonrpc-core/9.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting jsonrpc-core-9.0.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/jsonrpc-core/9.0.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ca922fd38a3c7d08a2ae731d7d4167fc949b93603157396bf9d0356bdc2d56f2
[INFO] running `"docker" "start" "-a" "ca922fd38a3c7d08a2ae731d7d4167fc949b93603157396bf9d0356bdc2d56f2"`
[INFO] [stderr]     Checking jsonrpc-core v9.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/io.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 |             compatibility: compatibility,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `compatibility`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/io.rs:116:4
[INFO] [stderr]     |
[INFO] [stderr] 116 |             compatibility: compatibility,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `compatibility`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/io.rs:117:4
[INFO] [stderr]     |
[INFO] [stderr] 117 |             middleware: middleware,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `middleware`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/io.rs:126:4
[INFO] [stderr]     |
[INFO] [stderr] 126 |             middleware: middleware,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `middleware`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/error.rs:96:4
[INFO] [stderr]    |
[INFO] [stderr] 96 |             code: code,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `code`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |                 id: id,
[INFO] [stderr]    |                 ^^^^^^ help: replace it with: `id`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 jsonrpc: jsonrpc,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^ help: replace it with: `jsonrpc`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 result: result,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^ help: replace it with: `result`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 id: id,
[INFO] [stderr]    |                 ^^^^^^ help: replace it with: `id`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |                 jsonrpc: jsonrpc,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^ help: replace it with: `jsonrpc`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 error: error,
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: replace it with: `error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 |             id: id,
[INFO] [stderr]    |             ^^^^^^ help: replace it with: `id`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 |             jsonrpc: jsonrpc,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^ help: replace it with: `jsonrpc`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/types/response.rs:107:4
[INFO] [stderr]     |
[INFO] [stderr] 107 |             jsonrpc: jsonrpc,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: replace it with: `jsonrpc`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/types/response.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 |             error: error,
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `error`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/io.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 |             compatibility: compatibility,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `compatibility`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/io.rs:116:4
[INFO] [stderr]     |
[INFO] [stderr] 116 |             compatibility: compatibility,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `compatibility`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/io.rs:117:4
[INFO] [stderr]     |
[INFO] [stderr] 117 |             middleware: middleware,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `middleware`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/io.rs:126:4
[INFO] [stderr]     |
[INFO] [stderr] 126 |             middleware: middleware,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `middleware`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/error.rs:96:4
[INFO] [stderr]    |
[INFO] [stderr] 96 |             code: code,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `code`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |                 id: id,
[INFO] [stderr]    |                 ^^^^^^ help: replace it with: `id`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 jsonrpc: jsonrpc,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^ help: replace it with: `jsonrpc`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |                 result: result,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^ help: replace it with: `result`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 id: id,
[INFO] [stderr]    |                 ^^^^^^ help: replace it with: `id`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |                 jsonrpc: jsonrpc,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^ help: replace it with: `jsonrpc`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 error: error,
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: replace it with: `error`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 |             id: id,
[INFO] [stderr]    |             ^^^^^^ help: replace it with: `id`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/types/response.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 |             jsonrpc: jsonrpc,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^ help: replace it with: `jsonrpc`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/types/response.rs:107:4
[INFO] [stderr]     |
[INFO] [stderr] 107 |             jsonrpc: jsonrpc,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: replace it with: `jsonrpc`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/types/response.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 |             error: error,
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `error`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/io.rs:67:22
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn is_version_valid(&self, version: Option<Version>) -> bool {
[INFO] [stderr]    |                         ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/io.rs:76:21
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn default_version(&self) -> Option<Version> {
[INFO] [stderr]    |                        ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/middleware.rs:106:16
[INFO] [stderr]     |
[INFO] [stderr] 106 |     type Future = Either<A::Future, Either<B::Future, Either<C::Future, D::Future>>>;
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/middleware.rs:107:20
[INFO] [stderr]     |
[INFO] [stderr] 107 |     type CallFuture = Either<A::CallFuture, Either<B::CallFuture, Either<C::CallFuture, D::CallFuture>>>;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/types/version.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |           match self {
[INFO] [stderr]    |  _________^
[INFO] [stderr] 18 | |             &Version::V2 => serializer.serialize_str("2.0")
[INFO] [stderr] 19 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 17 |         match *self {
[INFO] [stderr] 18 |             Version::V2 => serializer.serialize_str("2.0")
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/io.rs:67:22
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn is_version_valid(&self, version: Option<Version>) -> bool {
[INFO] [stderr]    |                         ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/io.rs:76:21
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn default_version(&self) -> Option<Version> {
[INFO] [stderr]    |                        ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/middleware.rs:106:16
[INFO] [stderr]     |
[INFO] [stderr] 106 |     type Future = Either<A::Future, Either<B::Future, Either<C::Future, D::Future>>>;
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/middleware.rs:107:20
[INFO] [stderr]     |
[INFO] [stderr] 107 |     type CallFuture = Either<A::CallFuture, Either<B::CallFuture, Either<C::CallFuture, D::CallFuture>>>;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/types/version.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |           match self {
[INFO] [stderr]    |  _________^
[INFO] [stderr] 18 | |             &Version::V2 => serializer.serialize_str("2.0")
[INFO] [stderr] 19 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 17 |         match *self {
[INFO] [stderr] 18 |             Version::V2 => serializer.serialize_str("2.0")
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.35s
[INFO] running `"docker" "inspect" "ca922fd38a3c7d08a2ae731d7d4167fc949b93603157396bf9d0356bdc2d56f2"`
[INFO] running `"docker" "rm" "-f" "ca922fd38a3c7d08a2ae731d7d4167fc949b93603157396bf9d0356bdc2d56f2"`
[INFO] [stdout] ca922fd38a3c7d08a2ae731d7d4167fc949b93603157396bf9d0356bdc2d56f2