[INFO] cloning repository https://github.com/FredOden/rust-cli
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FredOden/rust-cli" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredOden%2Frust-cli", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredOden%2Frust-cli'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5de6cbdff09208420cec89c48513287dd7d7ad62
[INFO] checking FredOden/rust-cli against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredOden%2Frust-cli" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/FredOden/rust-cli
[INFO] finished tweaking git repo https://github.com/FredOden/rust-cli
[INFO] tweaked toml for git repo https://github.com/FredOden/rust-cli written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/FredOden/rust-cli on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/FredOden/rust-cli 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fd8027498c1d418f606c31174bf247fa35d8d8d9282375a0c5ba930cacd8287
[INFO] running `Command { std: "docker" "start" "-a" "9fd8027498c1d418f606c31174bf247fa35d8d8d9282375a0c5ba930cacd8287", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fd8027498c1d418f606c31174bf247fa35d8d8d9282375a0c5ba930cacd8287", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fd8027498c1d418f606c31174bf247fa35d8d8d9282375a0c5ba930cacd8287", kill_on_drop: false }`
[INFO] [stdout] 9fd8027498c1d418f606c31174bf247fa35d8d8d9282375a0c5ba930cacd8287
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd7b5b68574c99e4d150eb850ebe10fef2e5ace0333895789901891ad11dac44
[INFO] running `Command { std: "docker" "start" "-a" "fd7b5b68574c99e4d150eb850ebe10fef2e5ace0333895789901891ad11dac44", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]     Checking smallvec v1.15.1
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[INFO] [stderr]    Compiling icu_normalizer_data v2.1.1
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[INFO] [stderr]     Checking parking_lot_core v0.9.12
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[INFO] [stderr]     Checking futures-util v0.3.31
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[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]     Checking parking_lot v0.12.5
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[INFO] [stderr]     Checking clap v2.34.0
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[INFO] [stderr]    Compiling proc-macro-error v1.0.4
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[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
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[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling openssl-macros v0.1.1
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[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking zerotrie v0.2.3
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[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking icu_locale_core v2.1.1
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[INFO] [stderr]     Checking icu_provider v2.1.1
[INFO] [stderr]     Checking icu_properties v2.1.1
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking idna_adapter v1.2.1
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[INFO] [stderr]     Checking tokio-util v0.7.17
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
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[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.27
[INFO] [stderr]     Checking cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::PathBuf;
[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: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::SocketAddr`
[INFO] [stdout]  --> src/client.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::SocketAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/alphavantageapi.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::PathBuf;
[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: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::SocketAddr`
[INFO] [stdout]  --> src/client.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::SocketAddr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/alphavantageapi.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/client.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 |                         let mut sb = std::str::from_utf8(&buffer).unwrap();
[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: `i`
[INFO] [stdout]   --> src/client.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             for i in 0..5 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/client.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 |                         let mut sb = std::str::from_utf8(&buffer).unwrap();
[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: `i`
[INFO] [stdout]   --> src/client.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             for i in 0..5 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/exchange_simulator.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut sb = std::str::from_utf8(&buffer);
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `debug`, `verbose`, `rate`, and `out_type` are never read
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Opt {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 34 |     #[structopt(short, long)]
[INFO] [stdout] 35 |     debug: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     verbose: u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     rate: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     out_type: Option<OutType>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: function `dummy` is never used
[INFO] [stdout]    --> src/main.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn dummy<T: std::fmt::Debug>(d:T) {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Warrant` is never constructed
[INFO] [stdout]   --> src/instrument.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Kind {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 15 |     Warrant(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Kind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `bid`, `ask`, `open`, and `close` are never read
[INFO] [stdout]   --> src/instrument.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Data {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 29 |     last: f64,   // The last traded price.
[INFO] [stdout] 30 |     bid: f64,    // The current bid price.
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 31 |     ask: f64,    // The current ask price.
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 32 |     open: f64,   // The opening price.
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 33 |     close: f64,  // The closing price.
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Data` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_subscribers` is never used
[INFO] [stdout]   --> src/instrument.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl Instrument {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn get_subscribers(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/instrument.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub struct DataFeed<'a> {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 106 |     registry: HashMap<&'a String, &'a Instrument>, // A registry mapping instrument names to their references.
[INFO] [stdout] 107 |     name: String, // The name of the data feed.
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]    --> src/instrument.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl<'a> DataFeed<'a> {
[INFO] [stdout]     | --------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     pub fn flush(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/exchange_simulator.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             stream.shutdown(std::net::Shutdown::Both);
[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] 86 |             let _ = stream.shutdown(std::net::Shutdown::Both);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/exchange_simulator.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut sb = std::str::from_utf8(&buffer);
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `debug`, `verbose`, `rate`, and `out_type` are never read
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Opt {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 34 |     #[structopt(short, long)]
[INFO] [stdout] 35 |     debug: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     verbose: u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     rate: f64,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     out_type: Option<OutType>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` 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: function `dummy` is never used
[INFO] [stdout]    --> src/main.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn dummy<T: std::fmt::Debug>(d:T) {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Warrant` is never constructed
[INFO] [stdout]   --> src/instrument.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum Kind {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 15 |     Warrant(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Kind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `bid`, `ask`, `open`, and `close` are never read
[INFO] [stdout]   --> src/instrument.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Data {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 29 |     last: f64,   // The last traded price.
[INFO] [stdout] 30 |     bid: f64,    // The current bid price.
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 31 |     ask: f64,    // The current ask price.
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 32 |     open: f64,   // The opening price.
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 33 |     close: f64,  // The closing price.
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Data` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_subscribers` is never used
[INFO] [stdout]   --> src/instrument.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl Instrument {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn get_subscribers(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/instrument.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub struct DataFeed<'a> {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 106 |     registry: HashMap<&'a String, &'a Instrument>, // A registry mapping instrument names to their references.
[INFO] [stdout] 107 |     name: String, // The name of the data feed.
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]    --> src/instrument.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl<'a> DataFeed<'a> {
[INFO] [stdout]     | --------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     pub fn flush(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/exchange_simulator.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             stream.shutdown(std::net::Shutdown::Both);
[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] 86 |             let _ = stream.shutdown(std::net::Shutdown::Both);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 52.98s
[INFO] running `Command { std: "docker" "inspect" "fd7b5b68574c99e4d150eb850ebe10fef2e5ace0333895789901891ad11dac44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd7b5b68574c99e4d150eb850ebe10fef2e5ace0333895789901891ad11dac44", kill_on_drop: false }`
[INFO] [stdout] fd7b5b68574c99e4d150eb850ebe10fef2e5ace0333895789901891ad11dac44
