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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cascades/group.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let mut group = Group::new(mexpr.clone());
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cascades/group.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let mut group = Group::new(mexpr.clone());
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `JoinGraph` is never constructed
[INFO] [stdout]  --> src/join_graph.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct JoinGraph {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `from_plan` are never used
[INFO] [stdout]   --> src/join_graph.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl JoinGraph {
[INFO] [stdout]    | -------------- associated functions in this implementation
[INFO] [stdout] 15 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn from_plan(plan: &LogicalPlan) -> Result<Self, DataFusionError> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `JoinGraphVisitor` is never constructed
[INFO] [stdout]   --> src/join_graph.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct JoinGraphVisitor {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/join_graph.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl JoinGraphVisitor {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 36 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 12s
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