[INFO] cloning repository https://github.com/JoaoPedroPP/barIO
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoaoPedroPP/barIO" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoaoPedroPP%2FbarIO", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoaoPedroPP%2FbarIO'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18ea87f572c469cd788579fb4b289406b80a5eaf
[INFO] checking JoaoPedroPP/barIO against f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1 for pr-160235-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoaoPedroPP%2FbarIO" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/JoaoPedroPP/barIO
[INFO] finished tweaking git repo https://github.com/JoaoPedroPP/barIO
[INFO] tweaked toml for git repo https://github.com/JoaoPedroPP/barIO written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JoaoPedroPP/barIO on toolchain f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/JoaoPedroPP/barIO already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: binary `barIO` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-2-tc2/source/target/.../barIO
[INFO] [stderr]    |                                                  ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `bar-io`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 - name = "barIO"
[INFO] [stderr] 25 + name = "bar-io"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `bar-io`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 ~ version = "0.1.0"
[INFO] [stderr] 27 + [[bin]]
[INFO] [stderr] 28 + name = "bar-io"
[INFO] [stderr] 29 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `barIO` (manifest) generated 1 warning
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages to highest compatible versions
[INFO] [stderr]     Updating cc v1.0.78 -> v1.4.6
[INFO] [stderr]     Updating cmake v0.1.49 -> v0.1.58
[INFO] [stderr]       Adding duct v0.13.7
[INFO] [stderr]       Adding errno v0.3.14
[INFO] [stderr]       Adding find-msvc-tools v0.1.12
[INFO] [stderr]     Updating libc v0.2.138 -> v0.2.189
[INFO] [stderr]     Updating libz-sys v1.1.8 -> v1.1.29
[INFO] [stderr]     Updating num_enum v0.5.9 -> v0.7.6
[INFO] [stderr]     Updating num_enum_derive v0.5.9 -> v0.7.6
[INFO] [stderr]     Updating openssl-src v111.24.0+1.1.1s -> v300.6.1+3.6.3
[INFO] [stderr]     Updating openssl-sys v0.9.80 -> v0.9.117
[INFO] [stderr]       Adding os_pipe v1.2.3
[INFO] [stderr]     Updating pkg-config v0.3.26 -> v0.3.34
[INFO] [stderr]     Updating proc-macro2 v1.0.47 -> v1.0.107
[INFO] [stderr]     Updating quote v1.0.21 -> v1.0.47
[INFO] [stderr]     Updating rdkafka v0.25.0 -> v0.34.0 (available: v0.39.0)
[INFO] [stderr]     Updating rdkafka-sys v3.0.0+1.6.0 -> v4.10.0+2.12.1
[INFO] [stderr]       Adding rustversion v1.0.23
[INFO] [stderr]       Adding sasl2-sys v0.1.22+2.1.28
[INFO] [stderr]       Adding shared_child v1.1.2
[INFO] [stderr]       Adding shlex v2.0.1
[INFO] [stderr]       Adding sigchld v0.2.5
[INFO] [stderr]       Adding signal-hook v0.4.4
[INFO] [stderr]       Adding signal-hook-registry v1.4.8
[INFO] [stderr]       Adding syn v2.0.119
[INFO] [stderr]       Adding windows-link v0.2.1
[INFO] [stderr]       Adding windows-sys v0.61.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110
[INFO] running `Command { std: "docker" "start" "90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110" "/opt/rustwide/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110" "/opt/rustwide/cargo-home/bin/cargo" "+f99a7560a6b5f0a5e6894aea7e8afe0e01d3edd1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: binary `barIO` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../barIO
[INFO] [stderr]    |                          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `bar-io`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 - name = "barIO"
[INFO] [stderr] 25 + name = "bar-io"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `bar-io`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 ~ version = "0.1.0"
[INFO] [stderr] 27 + [[bin]]
[INFO] [stderr] 28 + name = "bar-io"
[INFO] [stderr] 29 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `barIO` (manifest) generated 1 warning
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling find-msvc-tools v0.1.12
[INFO] [stderr]    Compiling pkg-config v0.3.34
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling signal-hook v0.4.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bytes v1.3.0
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]     Checking num_cpus v1.14.0
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]     Checking itoa v1.0.5
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[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling cc v1.4.6
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling tokio v1.24.2
[INFO] [stderr]    Compiling memoffset v0.7.1
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[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling openssl v0.10.45
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling toml_datetime v0.5.1
[INFO] [stderr]    Compiling rayon-core v1.10.1
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[INFO] [stderr]    Compiling nom8 v0.2.0
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[INFO] [stderr]     Checking tinyvec_macros v0.1.0
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[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling rustversion v1.0.23
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling os_pipe v1.2.3
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]    Compiling serde_json v1.0.91
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[INFO] [stderr]    Compiling openssl-src v300.6.1+3.6.3
[INFO] [stderr]    Compiling cmake v0.1.58
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking form_urlencoded v1.1.0
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[INFO] [stderr]    Compiling sigchld v0.2.5
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling shared_child v1.1.2
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stderr]    Compiling duct v0.13.7
[INFO] [stderr]     Checking rayon v1.6.1
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking unicode-bidi v0.3.10
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking half v2.1.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking gif v0.11.4
[INFO] [stderr]     Checking png v0.17.7
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]    Compiling openssl-sys v0.9.117
[INFO] [stderr]    Compiling libz-sys v1.1.29
[INFO] [stderr]    Compiling sasl2-sys v0.1.22+2.1.28
[INFO] [stderr]    Compiling rdkafka-sys v4.10.0+2.12.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking ipnet v2.7.1
[INFO] [stderr]     Checking base64 v0.21.0
[INFO] [stderr]     Checking bytemuck v1.12.3
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]    Compiling toml_edit v0.18.0
[INFO] [stderr]     Checking jpeg-decoder v0.3.0
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]     Checking h2 v0.3.15
[INFO] [stderr]     Checking tiff v0.8.1
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]     Checking pin-project v1.0.12
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]    Compiling proc-macro-crate v1.3.0
[INFO] [stderr]     Checking exr v1.5.2
[INFO] [stderr]    Compiling num_enum_derive v0.7.6
[INFO] [stderr]     Checking num_enum v0.7.6
[INFO] [stderr]     Checking hyper v0.14.23
[INFO] [stderr]     Checking image v0.24.5
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.14
[INFO] [stderr]     Checking rdkafka v0.34.0
[INFO] [stderr]     Checking barIO v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rdkafka::message::FromBytes`
[INFO] [stdout]  --> src/manipulation/data.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rdkafka::message::FromBytes;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `data::URedisResponse`
[INFO] [stdout]  --> src/manipulation/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use data::URedisResponse;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `franz_producer::producer`
[INFO] [stdout]   --> src/manipulation/mod.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use franz_producer::producer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rdkafka::message::FromBytes`
[INFO] [stdout]  --> src/manipulation/data.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rdkafka::message::FromBytes;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `data::URedisResponse`
[INFO] [stdout]  --> src/manipulation/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use data::URedisResponse;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `franz_producer::producer`
[INFO] [stdout]   --> src/manipulation/mod.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use franz_producer::producer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/manipulation/process.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut bars: Vec<Vec<String>> = Vec::new();
[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: unused variable: `bars`
[INFO] [stdout]   --> src/manipulation/process.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut bars: Vec<Vec<String>> = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bars`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `URedisResponse` is never constructed
[INFO] [stdout]   --> src/manipulation/data.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct URedisResponse {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RequestToken` is never constructed
[INFO] [stdout]   --> src/manipulation/cos.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct RequestToken {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `producer` is never used
[INFO] [stdout]  --> src/manipulation/franz_producer.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn producer(data: &str) {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:34:20
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for msg in pool {
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 34 -         for msg in pool {
[INFO] [stdout] 34 +         while let Some(msg) = pool {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 34 -         for msg in pool {
[INFO] [stdout] 34 +         if let Some(msg) = pool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/manipulation/process.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut bars: Vec<Vec<String>> = Vec::new();
[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: unused variable: `bars`
[INFO] [stdout]   --> src/manipulation/process.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut bars: Vec<Vec<String>> = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bars`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `URedisResponse` is never constructed
[INFO] [stdout]   --> src/manipulation/data.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct URedisResponse {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RequestToken` is never constructed
[INFO] [stdout]   --> src/manipulation/cos.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct RequestToken {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `producer` is never used
[INFO] [stdout]  --> src/manipulation/franz_producer.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn producer(data: &str) {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:34:20
[INFO] [stdout]    |
[INFO] [stdout] 34 |         for msg in pool {
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 34 -         for msg in pool {
[INFO] [stdout] 34 +         while let Some(msg) = pool {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 34 -         for msg in pool {
[INFO] [stdout] 34 +         if let Some(msg) = pool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 31s
[INFO] running `Command { std: "docker" "inspect" "90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110", kill_on_drop: false }`
[INFO] [stdout] 90c8b61f2dbeb04a0bca809cffc8f70ebaa0d412c687928dbbe4a86355dfb110
