[INFO] crate gj 0.2.0 is already in cache
[INFO] extracting crate gj 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/gj/0.2.0
[INFO] extracting crate gj 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/gj/0.2.0
[INFO] validating manifest of gj-0.2.0 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 gj-0.2.0 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 gj-0.2.0
[INFO] finished frobbing gj-0.2.0
[INFO] frobbed toml for gj-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/gj/0.2.0/Cargo.toml
[INFO] started frobbing gj-0.2.0
[INFO] finished frobbing gj-0.2.0
[INFO] frobbed toml for gj-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/gj/0.2.0/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 gj-0.2.0 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/gj/0.2.0:/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] 86573efe68c8f975cf6a681f9f6f900c4279f1534624c3efee1eea4d14ccd179
[INFO] running `"docker" "start" "-a" "86573efe68c8f975cf6a681f9f6f900c4279f1534624c3efee1eea4d14ccd179"`
[INFO] [stderr]     Checking gj v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/private/promise_node.rs:43:21
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Transform { dependency: dependency, func: func}
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `dependency`
[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/private/promise_node.rs:43:45
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Transform { dependency: dependency, func: func}
[INFO] [stderr]    |                                             ^^^^^^^^^^ help: replace it with: `func`
[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/private/promise_node.rs:67:21
[INFO] [stderr]    |
[INFO] [stderr] 67 |         Immediate { 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/private/promise_node.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |         Chain { state: state, dropper: dropper }
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: replace it with: `state`
[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/private/promise_node.rs:185:31
[INFO] [stderr]     |
[INFO] [stderr] 185 |         Chain { state: state, dropper: dropper }
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^ help: replace it with: `dropper`
[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/private/promise_node.rs:321:20
[INFO] [stderr]     |
[INFO] [stderr] 321 |         ArrayJoin {state: state}
[INFO] [stderr]     |                    ^^^^^^^^^^^^ help: replace it with: `state`
[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/private/promise_node.rs:410:32
[INFO] [stderr]     |
[INFO] [stderr] 410 |         return ExclusiveJoin { state: state };
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: replace it with: `state`
[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/private/promise_node.rs:463:19
[INFO] [stderr]     |
[INFO] [stderr] 463 |         ForkHub { state: state, dropper: dropper }
[INFO] [stderr]     |                   ^^^^^^^^^^^^ help: replace it with: `state`
[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/private/promise_node.rs:463:33
[INFO] [stderr]     |
[INFO] [stderr] 463 |         ForkHub { state: state, dropper: dropper }
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^ help: replace it with: `dropper`
[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/private/promise_node.rs:488:13
[INFO] [stderr]     |
[INFO] [stderr] 488 |             on_ready_event: on_ready_event,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `on_ready_event`
[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/private/mod.rs:174:21
[INFO] [stderr]     |
[INFO] [stderr] 174 |         BoolEvent { fired: fired }
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: replace it with: `fired`
[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/private/mod.rs:258:38
[INFO] [stderr]     |
[INFO] [stderr] 258 |         PromiseAndFulfillerWrapper { hub: hub }
[INFO] [stderr]     |                                      ^^^^^^^^ help: replace it with: `hub`
[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/private/promise_node.rs:43:21
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Transform { dependency: dependency, func: func}
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `dependency`
[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/private/promise_node.rs:43:45
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Transform { dependency: dependency, func: func}
[INFO] [stderr]    |                                             ^^^^^^^^^^ help: replace it with: `func`
[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/private/promise_node.rs:67:21
[INFO] [stderr]    |
[INFO] [stderr] 67 |         Immediate { 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/private/promise_node.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |         Chain { state: state, dropper: dropper }
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: replace it with: `state`
[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/private/promise_node.rs:185:31
[INFO] [stderr]     |
[INFO] [stderr] 185 |         Chain { state: state, dropper: dropper }
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^ help: replace it with: `dropper`
[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/private/promise_node.rs:321:20
[INFO] [stderr]     |
[INFO] [stderr] 321 |         ArrayJoin {state: state}
[INFO] [stderr]     |                    ^^^^^^^^^^^^ help: replace it with: `state`
[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/private/promise_node.rs:410:32
[INFO] [stderr]     |
[INFO] [stderr] 410 |         return ExclusiveJoin { state: state };
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: replace it with: `state`
[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/private/promise_node.rs:463:19
[INFO] [stderr]     |
[INFO] [stderr] 463 |         ForkHub { state: state, dropper: dropper }
[INFO] [stderr]     |                   ^^^^^^^^^^^^ help: replace it with: `state`
[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/private/promise_node.rs:463:33
[INFO] [stderr]     |
[INFO] [stderr] 463 |         ForkHub { state: state, dropper: dropper }
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^ help: replace it with: `dropper`
[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/private/promise_node.rs:488:13
[INFO] [stderr]     |
[INFO] [stderr] 488 |             on_ready_event: on_ready_event,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `on_ready_event`
[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/private/mod.rs:174:21
[INFO] [stderr]     |
[INFO] [stderr] 174 |         BoolEvent { fired: fired }
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: replace it with: `fired`
[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/private/mod.rs:258:38
[INFO] [stderr]     |
[INFO] [stderr] 258 |         PromiseAndFulfillerWrapper { hub: hub }
[INFO] [stderr]     |                                      ^^^^^^^^ help: replace it with: `hub`
[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: unneeded return statement
[INFO] [stderr]    --> src/private/promise_node.rs:410:9
[INFO] [stderr]     |
[INFO] [stderr] 410 |         return ExclusiveJoin { state: state };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `ExclusiveJoin { state: state }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/private/promise_node.rs:424:17
[INFO] [stderr]     |
[INFO] [stderr] 424 |                 return node.get();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `node.get()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/private/promise_node.rs:427:17
[INFO] [stderr]     |
[INFO] [stderr] 427 |                 return node.get();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `node.get()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]    --> src/private/promise_node.rs:478:13
[INFO] [stderr]     |
[INFO] [stderr] 478 |             ()
[INFO] [stderr]     |             ^^ help: remove the final `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/private/promise_node.rs:536:9
[INFO] [stderr]     |
[INFO] [stderr] 536 |         result
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/private/promise_node.rs:531:22
[INFO] [stderr]     |
[INFO] [stderr] 531 |           let result = match state.borrow().stage {
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 532 | |             ForkHubStage::Done(Ok(ref v)) => Ok(v.clone()),
[INFO] [stderr] 533 | |             ForkHubStage::Done(Err(ref e)) => Err(e.clone()),
[INFO] [stderr] 534 | |             _ => unreachable!(),
[INFO] [stderr] 535 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/handle_table.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         return result;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `result`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/handle_table.rs:92:29
[INFO] [stderr]    |
[INFO] [stderr] 92 |             &Some(ref v) => return v,
[INFO] [stderr]    |                             ^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/handle_table.rs:101:37
[INFO] [stderr]     |
[INFO] [stderr] 101 |             &mut Some(ref mut v) => return v,
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/lib.rs:451:28
[INFO] [stderr]     |
[INFO] [stderr] 451 |     fn fulfiller_dropped() -> () { () }
[INFO] [stderr]     |                            ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]    --> src/lib.rs:451:36
[INFO] [stderr]     |
[INFO] [stderr] 451 |     fn fulfiller_dropped() -> () { () }
[INFO] [stderr]     |                                    ^^ help: remove the final `()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/private/promise_node.rs:410:9
[INFO] [stderr]     |
[INFO] [stderr] 410 |         return ExclusiveJoin { state: state };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `ExclusiveJoin { state: state }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/private/promise_node.rs:424:17
[INFO] [stderr]     |
[INFO] [stderr] 424 |                 return node.get();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `node.get()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/private/promise_node.rs:427:17
[INFO] [stderr]     |
[INFO] [stderr] 427 |                 return node.get();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `node.get()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]    --> src/private/promise_node.rs:478:13
[INFO] [stderr]     |
[INFO] [stderr] 478 |             ()
[INFO] [stderr]     |             ^^ help: remove the final `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/private/promise_node.rs:536:9
[INFO] [stderr]     |
[INFO] [stderr] 536 |         result
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/private/promise_node.rs:531:22
[INFO] [stderr]     |
[INFO] [stderr] 531 |           let result = match state.borrow().stage {
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 532 | |             ForkHubStage::Done(Ok(ref v)) => Ok(v.clone()),
[INFO] [stderr] 533 | |             ForkHubStage::Done(Err(ref e)) => Err(e.clone()),
[INFO] [stderr] 534 | |             _ => unreachable!(),
[INFO] [stderr] 535 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/handle_table.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         return result;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `result`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/handle_table.rs:92:29
[INFO] [stderr]    |
[INFO] [stderr] 92 |             &Some(ref v) => return v,
[INFO] [stderr]    |                             ^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/handle_table.rs:101:37
[INFO] [stderr]     |
[INFO] [stderr] 101 |             &mut Some(ref mut v) => return v,
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove `return` as shown: `v`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/lib.rs:451:28
[INFO] [stderr]     |
[INFO] [stderr] 451 |     fn fulfiller_dropped() -> () { () }
[INFO] [stderr]     |                            ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]    --> src/lib.rs:451:36
[INFO] [stderr]     |
[INFO] [stderr] 451 |     fn fulfiller_dropped() -> () { () }
[INFO] [stderr]     |                                    ^^ help: remove the final `()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Event`
[INFO] [stderr]   --> src/lib.rs:54:29
[INFO] [stderr]    |
[INFO] [stderr] 54 | use private::{promise_node, Event, BoolEvent, PromiseAndFulfillerHub, PromiseAndFulfillerWrapper,
[INFO] [stderr]    |                             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Event`
[INFO] [stderr]   --> src/lib.rs:54:29
[INFO] [stderr]    |
[INFO] [stderr] 54 | use private::{promise_node, Event, BoolEvent, PromiseAndFulfillerHub, PromiseAndFulfillerWrapper,
[INFO] [stderr]    |                             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/private/promise_node.rs:117:25
[INFO] [stderr]     |
[INFO] [stderr] 117 | /                         match on_ready_event {
[INFO] [stderr] 118 | |                             Some(event) => {
[INFO] [stderr] 119 | |                                 intermediate.node.on_ready(event);
[INFO] [stderr] 120 | |                             }
[INFO] [stderr] 121 | |                             None => {}
[INFO] [stderr] 122 | |                         }
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 117 |                         if let Some(event) = on_ready_event {
[INFO] [stderr] 118 |     intermediate.node.on_ready(event);
[INFO] [stderr] 119 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/private/promise_node.rs:128:25
[INFO] [stderr]     |
[INFO] [stderr] 128 | /                         match on_ready_event {
[INFO] [stderr] 129 | |                             Some(event) => {
[INFO] [stderr] 130 | |                                 node.on_ready(event);
[INFO] [stderr] 131 | |                             }
[INFO] [stderr] 132 | |                             None => {}
[INFO] [stderr] 133 | |                         }
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 128 |                         if let Some(event) = on_ready_event {
[INFO] [stderr] 129 |     node.on_ready(event);
[INFO] [stderr] 130 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/private/promise_node.rs:304:13
[INFO] [stderr]     |
[INFO] [stderr] 304 |             promises.into_iter()
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `promises`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/private/promise_node.rs:316:12
[INFO] [stderr]     |
[INFO] [stderr] 316 |         if branches.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `branches.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/private/promise_node.rs:117:25
[INFO] [stderr]     |
[INFO] [stderr] 117 | /                         match on_ready_event {
[INFO] [stderr] 118 | |                             Some(event) => {
[INFO] [stderr] 119 | |                                 intermediate.node.on_ready(event);
[INFO] [stderr] 120 | |                             }
[INFO] [stderr] 121 | |                             None => {}
[INFO] [stderr] 122 | |                         }
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 117 |                         if let Some(event) = on_ready_event {
[INFO] [stderr] 118 |     intermediate.node.on_ready(event);
[INFO] [stderr] 119 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/private/promise_node.rs:128:25
[INFO] [stderr]     |
[INFO] [stderr] 128 | /                         match on_ready_event {
[INFO] [stderr] 129 | |                             Some(event) => {
[INFO] [stderr] 130 | |                                 node.on_ready(event);
[INFO] [stderr] 131 | |                             }
[INFO] [stderr] 132 | |                             None => {}
[INFO] [stderr] 133 | |                         }
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 128 |                         if let Some(event) = on_ready_event {
[INFO] [stderr] 129 |     node.on_ready(event);
[INFO] [stderr] 130 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/private/promise_node.rs:304:13
[INFO] [stderr]     |
[INFO] [stderr] 304 |             promises.into_iter()
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `promises`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/private/promise_node.rs:316:12
[INFO] [stderr]     |
[INFO] [stderr] 316 |         if branches.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `branches.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/private/promise_node.rs:468:17
[INFO] [stderr]     |
[INFO] [stderr] 468 |             let ref state = &hub.borrow().state;
[INFO] [stderr]     |             ----^^^^^^^^^----------------------- help: try: `let state = &(&hub.borrow().state);`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/private/promise_node.rs:468:17
[INFO] [stderr]     |
[INFO] [stderr] 468 |             let ref state = &hub.borrow().state;
[INFO] [stderr]     |             ----^^^^^^^^^----------------------- help: try: `let state = &(&hub.borrow().state);`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/private/mod.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 | /         match self {
[INFO] [stderr] 193 | |             &OnReadyEvent::AlreadyReady => true,
[INFO] [stderr] 194 | |             _ => false,
[INFO] [stderr] 195 | |         }
[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] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/private/mod.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 | /         match self {
[INFO] [stderr] 193 | |             &OnReadyEvent::AlreadyReady => true,
[INFO] [stderr] 194 | |             _ => false,
[INFO] [stderr] 195 | |         }
[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] 192 |         match *self {
[INFO] [stderr] 193 |             OnReadyEvent::AlreadyReady => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/private/mod.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 | /         match self {
[INFO] [stderr] 200 | |             &OnReadyEvent::Empty => true,
[INFO] [stderr] 201 | |             _ => false,
[INFO] [stderr] 202 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[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] 199 |         match *self {
[INFO] [stderr] 200 |             OnReadyEvent::Empty => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 192 |         match *self {
[INFO] [stderr] 193 |             OnReadyEvent::AlreadyReady => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/private/mod.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 | /         match self {
[INFO] [stderr] 200 | |             &OnReadyEvent::Empty => true,
[INFO] [stderr] 201 | |             _ => false,
[INFO] [stderr] 202 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[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] 199 |         match *self {
[INFO] [stderr] 200 |             OnReadyEvent::Empty => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/handle_table.rs:59:12
[INFO] [stderr]    |
[INFO] [stderr] 59 |         if !result.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^ help: try: `result.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]   --> src/handle_table.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 | /     fn index<'a>(&'a self, idx: Handle) -> &'a T {
[INFO] [stderr] 91 | |         match &self.slots[idx.val] {
[INFO] [stderr] 92 | |             &Some(ref v) => return v,
[INFO] [stderr] 93 | |             &None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr] 94 | |         }
[INFO] [stderr] 95 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> src/handle_table.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 | /         match &self.slots[idx.val] {
[INFO] [stderr] 92 | |             &Some(ref v) => return v,
[INFO] [stderr] 93 | |             &None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr] 94 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 91 |         match self.slots[idx.val] {
[INFO] [stderr] 92 |             Some(ref v) => return v,
[INFO] [stderr] 93 |             None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/handle_table.rs:99:5
[INFO] [stderr]     |
[INFO] [stderr] 99  | /     fn index_mut<'a>(&'a mut self, idx: Handle) -> &'a mut T {
[INFO] [stderr] 100 | |         match &mut self.slots[idx.val] {
[INFO] [stderr] 101 | |             &mut Some(ref mut v) => return v,
[INFO] [stderr] 102 | |             &mut None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr] 103 | |         }
[INFO] [stderr] 104 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/handle_table.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 | /         match &mut self.slots[idx.val] {
[INFO] [stderr] 101 | |             &mut Some(ref mut v) => return v,
[INFO] [stderr] 102 | |             &mut None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr] 103 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[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] 100 |         match *(&mut self.slots[idx.val]) {
[INFO] [stderr] 101 |             Some(ref mut v) => return v,
[INFO] [stderr] 102 |             None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/handle_table.rs:59:12
[INFO] [stderr]    |
[INFO] [stderr] 59 |         if !result.is_none() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^ help: try: `result.is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]   --> src/handle_table.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 | /     fn index<'a>(&'a self, idx: Handle) -> &'a T {
[INFO] [stderr] 91 | |         match &self.slots[idx.val] {
[INFO] [stderr] 92 | |             &Some(ref v) => return v,
[INFO] [stderr] 93 | |             &None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr] 94 | |         }
[INFO] [stderr] 95 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> src/handle_table.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 | /         match &self.slots[idx.val] {
[INFO] [stderr] 92 | |             &Some(ref v) => return v,
[INFO] [stderr] 93 | |             &None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr] 94 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 91 |         match self.slots[idx.val] {
[INFO] [stderr] 92 |             Some(ref v) => return v,
[INFO] [stderr] 93 |             None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/handle_table.rs:99:5
[INFO] [stderr]     |
[INFO] [stderr] 99  | /     fn index_mut<'a>(&'a mut self, idx: Handle) -> &'a mut T {
[INFO] [stderr] 100 | |         match &mut self.slots[idx.val] {
[INFO] [stderr] 101 | |             &mut Some(ref mut v) => return v,
[INFO] [stderr] 102 | |             &mut None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr] 103 | |         }
[INFO] [stderr] 104 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/handle_table.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 | /         match &mut self.slots[idx.val] {
[INFO] [stderr] 101 | |             &mut Some(ref mut v) => return v,
[INFO] [stderr] 102 | |             &mut None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr] 103 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[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] 100 |         match *(&mut self.slots[idx.val]) {
[INFO] [stderr] 101 |             Some(ref mut v) => return v,
[INFO] [stderr] 102 |             None => panic!("invalid handle idx: {}", idx.val),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing.
[INFO] [stderr]    --> src/lib.rs:207:9
[INFO] [stderr]     |
[INFO] [stderr] 207 |         drop(wait_scope);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::drop_ref)] on by default
[INFO] [stderr] note: argument has type &WaitScope
[INFO] [stderr]    --> src/lib.rs:207:14
[INFO] [stderr]     |
[INFO] [stderr] 207 |         drop(wait_scope);
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#drop_ref
[INFO] [stderr] 
[INFO] [stderr] error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing.
[INFO] [stderr]    --> src/lib.rs:207:9
[INFO] [stderr]     |
[INFO] [stderr] 207 |         drop(wait_scope);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::drop_ref)] on by default
[INFO] [stderr] note: argument has type &WaitScope
[INFO] [stderr]    --> src/lib.rs:207:14
[INFO] [stderr]     |
[INFO] [stderr] 207 |         drop(wait_scope);
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#drop_ref
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `gj`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `gj`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "86573efe68c8f975cf6a681f9f6f900c4279f1534624c3efee1eea4d14ccd179"`
[INFO] running `"docker" "rm" "-f" "86573efe68c8f975cf6a681f9f6f900c4279f1534624c3efee1eea4d14ccd179"`
[INFO] [stdout] 86573efe68c8f975cf6a681f9f6f900c4279f1534624c3efee1eea4d14ccd179