[INFO] crate rckit 0.1.0 is already in cache
[INFO] extracting crate rckit 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/rckit/0.1.0
[INFO] extracting crate rckit 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rckit/0.1.0
[INFO] validating manifest of rckit-0.1.0 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 rckit-0.1.0 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 rckit-0.1.0
[INFO] finished frobbing rckit-0.1.0
[INFO] frobbed toml for rckit-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/rckit/0.1.0/Cargo.toml
[INFO] started frobbing rckit-0.1.0
[INFO] finished frobbing rckit-0.1.0
[INFO] frobbed toml for rckit-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rckit/0.1.0/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 rckit-0.1.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/rckit/0.1.0:/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] 2a893632ba5bca83501daf518c9f0f27b9068adafa97923c5245a676dded9118
[INFO] running `"docker" "start" "-a" "2a893632ba5bca83501daf518c9f0f27b9068adafa97923c5245a676dded9118"`
[INFO] [stderr]     Checking combine v3.6.6
[INFO] [stderr]     Checking redis v0.9.1
[INFO] [stderr]     Checking rckit v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/conn.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             client: client,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `client`
[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/conn.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             client: client,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `client`
[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: unused import: `redis::Commands`
[INFO] [stderr]  --> src/conn.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use redis::Commands;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Role`
[INFO] [stderr]  --> src/create.rs:1:37
[INFO] [stderr]   |
[INFO] [stderr] 1 | use cluster::{Cluster, Error, Node, Role};
[INFO] [stderr]   |                                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]    --> src/cluster.rs:116:17
[INFO] [stderr]     |
[INFO] [stderr] 116 |             for node in nodes {
[INFO] [stderr]     |                 ^^^^ help: consider using `_node` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `migrate`
[INFO] [stderr]    --> src/cluster.rs:118:21
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 let migrate = &slots[start..start + count];
[INFO] [stderr]     |                     ^^^^^^^ help: consider using `_migrate` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `redis::Commands`
[INFO] [stderr]  --> src/conn.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use redis::Commands;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Role`
[INFO] [stderr]  --> src/create.rs:1:37
[INFO] [stderr]   |
[INFO] [stderr] 1 | use cluster::{Cluster, Error, Node, Role};
[INFO] [stderr]   |                                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]    --> src/cluster.rs:185:5
[INFO] [stderr]     |
[INFO] [stderr] 185 |     None,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/add.rs:15:43
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let items: Vec<&str> = addr.split(":").collect();
[INFO] [stderr]    |                                           ^^^ help: try using a char instead: `':'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/add.rs:21:45
[INFO] [stderr]    |
[INFO] [stderr] 21 |             let mut ms: Vec<&str> = n.split(",").collect();
[INFO] [stderr]    |                                             ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/add.rs:55:30
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 let master = self.slave_master.get(&node.addr()).unwrap();
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.slave_master[&node.addr()]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/add.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 let _: () = node.set_slave();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: variant `master` should have a camel case name such as `Master`
[INFO] [stderr]   --> src/cluster.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     master,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `slave` should have a camel case name such as `Slave`
[INFO] [stderr]   --> src/cluster.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     slave,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/cluster.rs:68:41
[INFO] [stderr]    |
[INFO] [stderr] 68 |                                         node_slot.get(&slot).unwrap().name,
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node_slot[&slot]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/cluster.rs:74:33
[INFO] [stderr]    |
[INFO] [stderr] 74 |                                 slot_num = slot_num + 1;
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `slot_num += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/cluster.rs:120:17
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 start = start + count;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `start += count`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of left operand
[INFO] [stderr]    --> src/cluster.rs:132:16
[INFO] [stderr]     |
[INFO] [stderr] 132 |             if &n.addr() == node {
[INFO] [stderr]     |                ---------^^^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: use the left value directly: `n.addr()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/conn.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 | /         let _: () = redis::cmd("cluster")
[INFO] [stderr] 32 | |             .arg("addslots")
[INFO] [stderr] 33 | |             .arg(slots)
[INFO] [stderr] 34 | |             .query(&con)
[INFO] [stderr] 35 | |             .expect("add slots err");
[INFO] [stderr]    | |_____________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/conn.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 | /         let _: () = redis::cmd("CLUSTER")
[INFO] [stderr] 40 | |             .arg("SET-CONFIG-EPOCH")
[INFO] [stderr] 41 | |             .arg(epoch)
[INFO] [stderr] 42 | |             .query(&con)
[INFO] [stderr] 43 | |             .expect("set config epoch err");
[INFO] [stderr]    | |____________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/conn.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 | /         let _: () = redis::cmd("CLUSTER")
[INFO] [stderr] 48 | |             .arg("MEET")
[INFO] [stderr] 49 | |             .arg(ip)
[INFO] [stderr] 50 | |             .arg(port)
[INFO] [stderr] 51 | |             .query(&con)
[INFO] [stderr] 52 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/conn.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         let _: () = redis::cmd("CLUSTER")
[INFO] [stderr] 58 | |             .arg("REPLICATE")
[INFO] [stderr] 59 | |             .arg(&*node_id)
[INFO] [stderr] 60 | |             .query(&con)
[INFO] [stderr] 61 | |             .expect("cluster replicate err");
[INFO] [stderr]    | |_____________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/conn.rs:69:46
[INFO] [stderr]    |
[INFO] [stderr] 69 |             let kv: Vec<String> = info.split(":").map(|x| x.to_string()).collect();
[INFO] [stderr]    |                                              ^^^ help: try using a char instead: `':'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/conn.rs:82:46
[INFO] [stderr]    |
[INFO] [stderr] 82 |             let kv: Vec<String> = info.split(" ").map(|x| x.to_string()).collect();
[INFO] [stderr]    |                                              ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/conn.rs:92:58
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 let mut scope: Vec<&str> = content.split("-").collect();
[INFO] [stderr]    |                                                          ^^^ help: try using a char instead: `'-'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/conn.rs:97:30
[INFO] [stderr]    |
[INFO] [stderr] 97 |                     for i in (start + 1..end + 1).into_iter() {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(start + 1..end + 1)`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/conn.rs:97:30
[INFO] [stderr]    |
[INFO] [stderr] 97 |                     for i in (start + 1..end + 1).into_iter() {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: use: `(start + 1..=end)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]    --> src/conn.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 | /         let _: () = redis::cmd("CLUSTER")
[INFO] [stderr] 114 | |             .arg("FORGET")
[INFO] [stderr] 115 | |             .arg(node)
[INFO] [stderr] 116 | |             .query(&con)
[INFO] [stderr] 117 | |             .unwrap();
[INFO] [stderr]     | |______________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/create.rs:100:32
[INFO] [stderr]     |
[INFO] [stderr] 100 |                 ips.entry(key).or_insert(vec![]).push(n.clone());
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![])`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/create.rs:112:29
[INFO] [stderr]     |
[INFO] [stderr] 112 |             node.add_slots(&(chunk.0..chunk.1).into_iter().collect::<Vec<usize>>());
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(chunk.0..chunk.1)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]    --> src/create.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             let _: () = node.set_slave();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/create.rs:148:35
[INFO] [stderr]     |
[INFO] [stderr] 148 |                     let mut key = String::from(slave.ip.clone() + ":" + &slave.port);
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `slave.ip.clone() + ":" + &slave.port`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/create.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         total = total + num;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^ help: replace it with: `total += num`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter_mut() and will not move the HashMap
[INFO] [stderr]    --> src/create.rs:194:29
[INFO] [stderr]     |
[INFO] [stderr] 194 |         for (_, v) in nodes.into_iter() {
[INFO] [stderr]     |                             ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/create.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |             len = len + v.len()
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^ help: replace it with: `len += v.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter_mut() and will not move the HashMap
[INFO] [stderr]    --> src/create.rs:203:29
[INFO] [stderr]     |
[INFO] [stderr] 203 |         for (_, v) in nodes.into_iter() {
[INFO] [stderr]     |                             ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/util.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         i = i + 1;
[INFO] [stderr]    |         ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]    --> src/lib.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |         let _: () = add.add_node().expect("add node fail");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]    --> src/cluster.rs:116:17
[INFO] [stderr]     |
[INFO] [stderr] 116 |             for node in nodes {
[INFO] [stderr]     |                 ^^^^ help: consider using `_node` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `migrate`
[INFO] [stderr]    --> src/cluster.rs:118:21
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 let migrate = &slots[start..start + count];
[INFO] [stderr]     |                     ^^^^^^^ help: consider using `_migrate` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]    --> src/cluster.rs:185:5
[INFO] [stderr]     |
[INFO] [stderr] 185 |     None,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/add.rs:15:43
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let items: Vec<&str> = addr.split(":").collect();
[INFO] [stderr]    |                                           ^^^ help: try using a char instead: `':'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/add.rs:21:45
[INFO] [stderr]    |
[INFO] [stderr] 21 |             let mut ms: Vec<&str> = n.split(",").collect();
[INFO] [stderr]    |                                             ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/add.rs:55:30
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 let master = self.slave_master.get(&node.addr()).unwrap();
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.slave_master[&node.addr()]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/add.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 let _: () = node.set_slave();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: variant `master` should have a camel case name such as `Master`
[INFO] [stderr]   --> src/cluster.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     master,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `slave` should have a camel case name such as `Slave`
[INFO] [stderr]   --> src/cluster.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     slave,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/cluster.rs:68:41
[INFO] [stderr]    |
[INFO] [stderr] 68 |                                         node_slot.get(&slot).unwrap().name,
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&node_slot[&slot]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/cluster.rs:74:33
[INFO] [stderr]    |
[INFO] [stderr] 74 |                                 slot_num = slot_num + 1;
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `slot_num += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/cluster.rs:120:17
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 start = start + count;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `start += count`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of left operand
[INFO] [stderr]    --> src/cluster.rs:132:16
[INFO] [stderr]     |
[INFO] [stderr] 132 |             if &n.addr() == node {
[INFO] [stderr]     |                ---------^^^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: use the left value directly: `n.addr()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/conn.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 | /         let _: () = redis::cmd("cluster")
[INFO] [stderr] 32 | |             .arg("addslots")
[INFO] [stderr] 33 | |             .arg(slots)
[INFO] [stderr] 34 | |             .query(&con)
[INFO] [stderr] 35 | |             .expect("add slots err");
[INFO] [stderr]    | |_____________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/conn.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 | /         let _: () = redis::cmd("CLUSTER")
[INFO] [stderr] 40 | |             .arg("SET-CONFIG-EPOCH")
[INFO] [stderr] 41 | |             .arg(epoch)
[INFO] [stderr] 42 | |             .query(&con)
[INFO] [stderr] 43 | |             .expect("set config epoch err");
[INFO] [stderr]    | |____________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/conn.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 | /         let _: () = redis::cmd("CLUSTER")
[INFO] [stderr] 48 | |             .arg("MEET")
[INFO] [stderr] 49 | |             .arg(ip)
[INFO] [stderr] 50 | |             .arg(port)
[INFO] [stderr] 51 | |             .query(&con)
[INFO] [stderr] 52 | |             .unwrap();
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/conn.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         let _: () = redis::cmd("CLUSTER")
[INFO] [stderr] 58 | |             .arg("REPLICATE")
[INFO] [stderr] 59 | |             .arg(&*node_id)
[INFO] [stderr] 60 | |             .query(&con)
[INFO] [stderr] 61 | |             .expect("cluster replicate err");
[INFO] [stderr]    | |_____________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/conn.rs:69:46
[INFO] [stderr]    |
[INFO] [stderr] 69 |             let kv: Vec<String> = info.split(":").map(|x| x.to_string()).collect();
[INFO] [stderr]    |                                              ^^^ help: try using a char instead: `':'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/conn.rs:82:46
[INFO] [stderr]    |
[INFO] [stderr] 82 |             let kv: Vec<String> = info.split(" ").map(|x| x.to_string()).collect();
[INFO] [stderr]    |                                              ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/conn.rs:92:58
[INFO] [stderr]    |
[INFO] [stderr] 92 |                 let mut scope: Vec<&str> = content.split("-").collect();
[INFO] [stderr]    |                                                          ^^^ help: try using a char instead: `'-'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/conn.rs:97:30
[INFO] [stderr]    |
[INFO] [stderr] 97 |                     for i in (start + 1..end + 1).into_iter() {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(start + 1..end + 1)`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/conn.rs:97:30
[INFO] [stderr]    |
[INFO] [stderr] 97 |                     for i in (start + 1..end + 1).into_iter() {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: use: `(start + 1..=end)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]    --> src/conn.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 | /         let _: () = redis::cmd("CLUSTER")
[INFO] [stderr] 114 | |             .arg("FORGET")
[INFO] [stderr] 115 | |             .arg(node)
[INFO] [stderr] 116 | |             .query(&con)
[INFO] [stderr] 117 | |             .unwrap();
[INFO] [stderr]     | |______________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/create.rs:100:32
[INFO] [stderr]     |
[INFO] [stderr] 100 |                 ips.entry(key).or_insert(vec![]).push(n.clone());
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![])`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/create.rs:112:29
[INFO] [stderr]     |
[INFO] [stderr] 112 |             node.add_slots(&(chunk.0..chunk.1).into_iter().collect::<Vec<usize>>());
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(chunk.0..chunk.1)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]    --> src/create.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             let _: () = node.set_slave();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/create.rs:148:35
[INFO] [stderr]     |
[INFO] [stderr] 148 |                     let mut key = String::from(slave.ip.clone() + ":" + &slave.port);
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `slave.ip.clone() + ":" + &slave.port`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/create.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         total = total + num;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^ help: replace it with: `total += num`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter_mut() and will not move the HashMap
[INFO] [stderr]    --> src/create.rs:194:29
[INFO] [stderr]     |
[INFO] [stderr] 194 |         for (_, v) in nodes.into_iter() {
[INFO] [stderr]     |                             ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/create.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |             len = len + v.len()
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^ help: replace it with: `len += v.len()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter_mut() and will not move the HashMap
[INFO] [stderr]    --> src/create.rs:203:29
[INFO] [stderr]     |
[INFO] [stderr] 203 |         for (_, v) in nodes.into_iter() {
[INFO] [stderr]     |                             ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/util.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         i = i + 1;
[INFO] [stderr]    |         ^^^^^^^^^ help: replace it with: `i += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]    --> src/lib.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |         let _: () = add.add_node().expect("add node fail");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.17s
[INFO] running `"docker" "inspect" "2a893632ba5bca83501daf518c9f0f27b9068adafa97923c5245a676dded9118"`
[INFO] running `"docker" "rm" "-f" "2a893632ba5bca83501daf518c9f0f27b9068adafa97923c5245a676dded9118"`
[INFO] [stdout] 2a893632ba5bca83501daf518c9f0f27b9068adafa97923c5245a676dded9118