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[INFO] [stdout] warning: unexpected `cfg` condition value: `no-network`
[INFO] [stdout]   --> src/io/mod.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[cfg_attr(feature = "no-network", derive(Clone))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `no-network` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `no-network`
[INFO] [stdout]   --> src/io/mod.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[cfg_attr(feature = "no-network", derive(Clone))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `no-network` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `err` is never read
[INFO] [stdout]  --> src/bin/enum_approach.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LbErr {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 2 |     err: &'static str
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `field` is never read
[INFO] [stdout]  --> src/bin/enum_approach.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct LbInner {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 8 |     field: usize
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `do_other_stuff` is never used
[INFO] [stdout]   --> src/bin/enum_approach.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl LbInner {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn do_other_stuff(&self) -> LbResult<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `do_other_stuff` is never used
[INFO] [stdout]   --> src/bin/enum_approach.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl LbProxy {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn do_other_stuff(&self) -> LbResult<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `do_other_stuff` is never used
[INFO] [stdout]   --> src/bin/enum_approach.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Lb {
[INFO] [stdout]    | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn do_other_stuff(&self) -> LbResult<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/enum_approach.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     lb.do_stuff(); 
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let _ = lb.do_stuff(); 
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `err` is never read
[INFO] [stdout]  --> src/bin/enum_approach.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LbErr {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 2 |     err: &'static str
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `field` is never read
[INFO] [stdout]  --> src/bin/enum_approach.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct LbInner {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 8 |     field: usize
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `do_other_stuff` is never used
[INFO] [stdout]   --> src/bin/enum_approach.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl LbInner {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn do_other_stuff(&self) -> LbResult<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `do_other_stuff` is never used
[INFO] [stdout]   --> src/bin/enum_approach.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl LbProxy {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn do_other_stuff(&self) -> LbResult<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `do_other_stuff` is never used
[INFO] [stdout]   --> src/bin/enum_approach.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Lb {
[INFO] [stdout]    | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn do_other_stuff(&self) -> LbResult<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/enum_approach.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     lb.do_stuff(); 
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let _ = lb.do_stuff(); 
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `BlockingLb` is never constructed
[INFO] [stdout]   --> src/bin/trait_approach.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct BlockingLb {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `err` is never read
[INFO] [stdout]  --> src/bin/trait_approach.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct LbErr {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 4 |     err: &'static str
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LbErr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `field` is never read
[INFO] [stdout]   --> src/bin/trait_approach.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct RealLb {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 14 |     field: usize
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lb` and `rt` are never read
[INFO] [stdout]   --> src/bin/trait_approach.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct BlockingLb {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 69 |     lb: Box<dyn Lb>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 70 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `init`, `do_stuff`, and `do_other_stuff` are never used
[INFO] [stdout]   --> src/bin/trait_approach.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | impl BlockingLb {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 74 |     
[INFO] [stdout] 75 |     fn init(flag: bool) -> LbResult<Self> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |     fn do_stuff(&self) -> LbResult<u32> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     fn do_other_stuff(&self) -> LbResult<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/trait_approach.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     lb.do_stuff().await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 108 |     let _ = lb.do_stuff().await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/trait_approach.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     lb.do_other_stuff().await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let _ = lb.do_other_stuff().await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lb-rs-prototype` (bin "trait_approach" test) due to 1 previous error; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `BlockingLb` is never constructed
[INFO] [stdout]   --> src/bin/trait_approach.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct BlockingLb {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `err` is never read
[INFO] [stdout]  --> src/bin/trait_approach.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct LbErr {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 4 |     err: &'static str
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LbErr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `field` is never read
[INFO] [stdout]   --> src/bin/trait_approach.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct RealLb {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 14 |     field: usize
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `lb` and `rt` are never read
[INFO] [stdout]   --> src/bin/trait_approach.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct BlockingLb {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 69 |     lb: Box<dyn Lb>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 70 |     rt: Arc<Runtime>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `init`, `do_stuff`, and `do_other_stuff` are never used
[INFO] [stdout]   --> src/bin/trait_approach.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | impl BlockingLb {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 74 |     
[INFO] [stdout] 75 |     fn init(flag: bool) -> LbResult<Self> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |     fn do_stuff(&self) -> LbResult<u32> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     fn do_other_stuff(&self) -> LbResult<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/trait_approach.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     lb.do_stuff().await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 108 |     let _ = lb.do_stuff().await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/bin/trait_approach.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     lb.do_other_stuff().await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let _ = lb.do_other_stuff().await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lb-rs-prototype` (bin "trait_approach") due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7ddb21c0cd2a3f793cde1be4f19749d4b0bae50ebf395609cf70a47ddbf55c5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ddb21c0cd2a3f793cde1be4f19749d4b0bae50ebf395609cf70a47ddbf55c5a", kill_on_drop: false }`
[INFO] [stdout] 7ddb21c0cd2a3f793cde1be4f19749d4b0bae50ebf395609cf70a47ddbf55c5a
