[INFO] fetching crate matching_engine 0.1.8... [INFO] checking matching_engine-0.1.8 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1 [INFO] extracting crate matching_engine 0.1.8 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate matching_engine 0.1.8 [INFO] finished tweaking crates.io crate matching_engine 0.1.8 [INFO] tweaked toml for crates.io crate matching_engine 0.1.8 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate matching_engine 0.1.8 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate matching_engine 0.1.8 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b5aa8c51216028ea37c3d385f8d94fd0b6d5fd4d720c31d81ba237edd5d70f8f [INFO] running `Command { std: "docker" "start" "-a" "b5aa8c51216028ea37c3d385f8d94fd0b6d5fd4d720c31d81ba237edd5d70f8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b5aa8c51216028ea37c3d385f8d94fd0b6d5fd4d720c31d81ba237edd5d70f8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b5aa8c51216028ea37c3d385f8d94fd0b6d5fd4d720c31d81ba237edd5d70f8f", kill_on_drop: false }` [INFO] [stdout] b5aa8c51216028ea37c3d385f8d94fd0b6d5fd4d720c31d81ba237edd5d70f8f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9caf390f161bf72e11f0b75c4f4d62b753b515ad58d9458af76f18209ff9330b [INFO] running `Command { std: "docker" "start" "-a" "9caf390f161bf72e11f0b75c4f4d62b753b515ad58d9458af76f18209ff9330b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.148 [INFO] [stderr] Compiling proc-macro2 v1.0.68 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Checking memchr v2.6.4 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling rustix v0.38.17 [INFO] [stderr] Checking linux-raw-sys v0.4.8 [INFO] [stderr] Checking bitflags v2.4.0 [INFO] [stderr] Compiling serde v1.0.188 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Checking itoa v1.0.9 [INFO] [stderr] Checking regex-syntax v0.7.5 [INFO] [stderr] Checking ryu v1.0.15 [INFO] [stderr] Compiling serde_json v1.0.107 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking iana-time-zone v0.1.57 [INFO] [stderr] Checking encode_unicode v1.0.0 [INFO] [stderr] Checking unicode-width v0.1.11 [INFO] [stderr] Checking log v0.4.20 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Checking termcolor v1.3.0 [INFO] [stderr] Compiling num-traits v0.2.16 [INFO] [stderr] Checking aho-corasick v1.1.1 [INFO] [stderr] Checking csv-core v0.1.11 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.38 [INFO] [stderr] Checking dirs-sys-next v0.1.2 [INFO] [stderr] Checking getrandom v0.2.10 [INFO] [stderr] Checking chrono v0.4.31 [INFO] [stderr] Checking dirs-next v2.0.0 [INFO] [stderr] Checking term v0.7.0 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking is-terminal v0.4.9 [INFO] [stderr] Checking colored v2.0.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking regex-automata v0.3.9 [INFO] [stderr] Checking regex v1.9.6 [INFO] [stderr] Checking env_logger v0.10.0 [INFO] [stderr] Compiling serde_derive v1.0.188 [INFO] [stderr] Checking csv v1.3.0 [INFO] [stderr] Checking prettytable-rs v0.10.0 [INFO] [stderr] Checking matching_engine v0.1.8 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `info` [INFO] [stdout] --> src/lib.rs:10:18 [INFO] [stdout] | [INFO] [stdout] 10 | use log::{error, info}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `OrderBook` [INFO] [stdout] --> src/model/domain.rs:650:38 [INFO] [stdout] | [INFO] [stdout] 650 | use crate::model::domain::{Fill, OrderBook, OrderBookKey}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `colored::Colorize` [INFO] [stdout] --> src/matchers/fifo_matcher.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use colored::Colorize; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `OrderBook` [INFO] [stdout] --> src/matchers/fifo_matcher.rs:231:38 [INFO] [stdout] | [INFO] [stdout] 231 | use crate::model::domain::{Fill, OrderBook}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `info` [INFO] [stdout] --> src/lib.rs:10:18 [INFO] [stdout] | [INFO] [stdout] 10 | use log::{error, info}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::hash_map::DefaultHasher` [INFO] [stdout] --> src/model/domain.rs:642:9 [INFO] [stdout] | [INFO] [stdout] 642 | use std::collections::hash_map::DefaultHasher; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Hash` and `Hasher` [INFO] [stdout] --> src/model/domain.rs:643:21 [INFO] [stdout] | [INFO] [stdout] 643 | use std::hash::{Hash, Hasher}; [INFO] [stdout] | ^^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `log::debug` [INFO] [stdout] --> src/model/domain.rs:645:9 [INFO] [stdout] | [INFO] [stdout] 645 | use log::debug; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `create_order_book` and `read_input` [INFO] [stdout] --> src/model/domain.rs:647:32 [INFO] [stdout] | [INFO] [stdout] 647 | use crate::common::utils::{create_order_book, read_input}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::matchers::fifo_matcher::FIFOMatcher` [INFO] [stdout] --> src/model/domain.rs:648:9 [INFO] [stdout] | [INFO] [stdout] 648 | use crate::matchers::fifo_matcher::FIFOMatcher; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::matchers::matcher::Matcher` [INFO] [stdout] --> src/model/domain.rs:649:9 [INFO] [stdout] | [INFO] [stdout] 649 | use crate::matchers::matcher::Matcher; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Fill`, `OrderBookKey`, and `OrderBook` [INFO] [stdout] --> src/model/domain.rs:650:32 [INFO] [stdout] | [INFO] [stdout] 650 | use crate::model::domain::{Fill, OrderBook, OrderBookKey}; [INFO] [stdout] | ^^^^ ^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `colored::Colorize` [INFO] [stdout] --> src/matchers/fifo_matcher.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use colored::Colorize; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::BufRead` [INFO] [stdout] --> src/lib.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::BufRead; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::BufRead` [INFO] [stdout] --> src/lib.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::BufRead; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/model/domain.rs:694:13 [INFO] [stdout] | [INFO] [stdout] 694 | let key = &String::from("IBM"); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/model/domain.rs:693:13 [INFO] [stdout] | [INFO] [stdout] 693 | let mut ob = create_order_book(read_input("test_data/orders.txt")); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/matchers/fifo_matcher.rs:321:13 [INFO] [stdout] | [INFO] [stdout] 321 | let mut fifo = FIFOMatcher; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/matchers/fifo_matcher.rs:354:13 [INFO] [stdout] | [INFO] [stdout] 354 | let mut fifo = FIFOMatcher; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `ex_cum_qty` is never read [INFO] [stdout] --> src/matchers/prorata_matcher.rs:84:9 [INFO] [stdout] | [INFO] [stdout] 84 | ex_cum_qty = ex_fill.cum_qty(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/common/utils.rs:121:9 [INFO] [stdout] | [INFO] [stdout] 121 | let mut file = OpenOptions::new() [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/common/utils.rs:129:9 [INFO] [stdout] | [INFO] [stdout] 129 | let mut log_message = format!("\n{}-{}", formatted_timestamp, message); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:51:9 [INFO] [stdout] | [INFO] [stdout] 51 | let mut ob = utils::create_order_book(input); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `ex_cum_qty` is never read [INFO] [stdout] --> src/matchers/prorata_matcher.rs:84:9 [INFO] [stdout] | [INFO] [stdout] 84 | ex_cum_qty = ex_fill.cum_qty(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `sum_of_filled_quantities` and `print_fills` are never used [INFO] [stdout] --> src/matchers/fifo_matcher.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 17 | impl FIFOMatcher { [INFO] [stdout] | ---------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 20 | fn sum_of_filled_quantities(&self, fills: &Vec, side: Side) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 86 | fn print_fills(&self, fills: Vec, side: Side) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary transmute [INFO] [stdout] --> src/model/domain.rs:187:40 [INFO] [stdout] | [INFO] [stdout] 187 | let float_bits: u64 = unsafe { std::mem::transmute(self.price) }; [INFO] [stdout] | -------------------^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: replace this with: `f64::to_bits` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unnecessary_transmutes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/common/utils.rs:121:9 [INFO] [stdout] | [INFO] [stdout] 121 | let mut file = OpenOptions::new() [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/common/utils.rs:129:9 [INFO] [stdout] | [INFO] [stdout] 129 | let mut log_message = format!("\n{}-{}", formatted_timestamp, message); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:51:9 [INFO] [stdout] | [INFO] [stdout] 51 | let mut ob = utils::create_order_book(input); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `sum_of_filled_quantities` and `print_fills` are never used [INFO] [stdout] --> src/matchers/fifo_matcher.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 17 | impl FIFOMatcher { [INFO] [stdout] | ---------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 20 | fn sum_of_filled_quantities(&self, fills: &Vec, side: Side) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 86 | fn print_fills(&self, fills: Vec, side: Side) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary transmute [INFO] [stdout] --> src/model/domain.rs:187:40 [INFO] [stdout] | [INFO] [stdout] 187 | let float_bits: u64 = unsafe { std::mem::transmute(self.price) }; [INFO] [stdout] | -------------------^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: replace this with: `f64::to_bits` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unnecessary_transmutes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `OrderBook` [INFO] [stdout] --> tests/pro_rata_matcher_tests.rs:3:44 [INFO] [stdout] | [INFO] [stdout] 3 | use matching_engine::model::domain::{Fill, OrderBook}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Receiver` and `Sender` [INFO] [stdout] --> src/main.rs:1:23 [INFO] [stdout] | [INFO] [stdout] 1 | use std::sync::mpsc::{Receiver, Sender}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread::JoinHandle` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::thread::JoinHandle; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `OrderBook` [INFO] [stdout] --> tests/fifo_matcher_tests.rs:4:44 [INFO] [stdout] | [INFO] [stdout] 4 | use matching_engine::model::domain::{Fill, OrderBook, OrderBookKey}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `client_fills` [INFO] [stdout] --> tests/fifo_matcher_tests.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let client_fills: Vec = fills.clone().into_iter().filter(|f| f.side() == Buy).collect(); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_client_fills` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ex_fills` [INFO] [stdout] --> tests/fifo_matcher_tests.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | let ex_fills: Vec = fills.clone().into_iter().filter(|f| f.side() == Sell).collect(); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ex_fills` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Receiver` and `Sender` [INFO] [stdout] --> src/main.rs:1:23 [INFO] [stdout] | [INFO] [stdout] 1 | use std::sync::mpsc::{Receiver, Sender}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread::JoinHandle` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::thread::JoinHandle; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.30s [INFO] running `Command { std: "docker" "inspect" "9caf390f161bf72e11f0b75c4f4d62b753b515ad58d9458af76f18209ff9330b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9caf390f161bf72e11f0b75c4f4d62b753b515ad58d9458af76f18209ff9330b", kill_on_drop: false }` [INFO] [stdout] 9caf390f161bf72e11f0b75c4f4d62b753b515ad58d9458af76f18209ff9330b