[INFO] cloning repository https://github.com/shabane/rust-self-learning-bill_manager
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shabane/rust-self-learning-bill_manager" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/shabane/rust-self-learning-bill_manager
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shabane/rust-self-learning-bill_manager" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42a0b38d4e8649e026ca6f11b488d67207e0ae6e
[INFO] checking shabane/rust-self-learning-bill_manager against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] fatal: could not create work tree dir '/workspace/builds/worker-1-tc2/source': No space left on device
[INFO] checking shabane/rust-self-learning-bill_manager against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] fatal: could not create work tree dir '/workspace/builds/worker-1-tc2/source': No space left on device
[INFO] checking shabane/rust-self-learning-bill_manager against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] fatal: could not create work tree dir '/workspace/builds/worker-1-tc2/source': No space left on device
[INFO] checking shabane/rust-self-learning-bill_manager against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] fatal: could not create work tree dir '/workspace/builds/worker-1-tc2/source': No space left on device
[INFO] checking shabane/rust-self-learning-bill_manager against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshabane%2Frust-self-learning-bill_manager" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shabane/rust-self-learning-bill_manager
[INFO] finished tweaking git repo https://github.com/shabane/rust-self-learning-bill_manager
[INFO] tweaked toml for git repo https://github.com/shabane/rust-self-learning-bill_manager written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shabane/rust-self-learning-bill_manager on toolchain 5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shabane/rust-self-learning-bill_manager 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" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2912b9c4163d4c50afc4775d7a1aaa939ea3931fc44dcb3a09d2a96a781783c7
[INFO] running `Command { std: "docker" "start" "-a" "2912b9c4163d4c50afc4775d7a1aaa939ea3931fc44dcb3a09d2a96a781783c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2912b9c4163d4c50afc4775d7a1aaa939ea3931fc44dcb3a09d2a96a781783c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2912b9c4163d4c50afc4775d7a1aaa939ea3931fc44dcb3a09d2a96a781783c7", kill_on_drop: false }`
[INFO] [stdout] 2912b9c4163d4c50afc4775d7a1aaa939ea3931fc44dcb3a09d2a96a781783c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e3011d65c5a57d1abe6f847d2b5437fb8b735e67a503593856c0511a0151913
[INFO] running `Command { std: "docker" "start" "-a" "7e3011d65c5a57d1abe6f847d2b5437fb8b735e67a503593856c0511a0151913", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking biller v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Bill`
[INFO] [stdout]  --> src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::bill::{Bill, BillState, Bills};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Bill`
[INFO] [stdout]  --> src/main.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::bill::{Bill, BillState, Bills};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/bill.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/bill.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/bill.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 if (bill.name == name) {
[INFO] [stdout]    |                    ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -                 if (bill.name == name) {
[INFO] [stdout] 50 +                 if bill.name == name {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/bill.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/bill.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/bill.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 if (bill.name == name) {
[INFO] [stdout]    |                    ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -                 if (bill.name == name) {
[INFO] [stdout] 50 +                 if bill.name == name {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |             let mut price_buffer: i32 = match price_buffer.trim().parse() {
[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/main.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |             let mut price_buffer: i32 = match price_buffer.trim().parse() {
[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: fields `date`, `description`, `price`, and `state` are never read
[INFO] [stdout]   --> src/bill.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Bill {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     pub name: String,
[INFO] [stdout] 12 |     pub date: SystemTime,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 13 |     pub description: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 14 |     pub price: i32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 15 |     pub state: BillState,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `date`, `description`, `price`, and `state` are never read
[INFO] [stdout]   --> src/bill.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Bill {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 11 |     pub name: String,
[INFO] [stdout] 12 |     pub date: SystemTime,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 13 |     pub description: String,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 14 |     pub price: i32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 15 |     pub state: BillState,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |             std::io::stdout().flush();
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |             let _ = std::io::stdout().flush();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             std::io::stdin().read_line(&mut decsription_buffer);
[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] 29 |             let _ = std::io::stdin().read_line(&mut decsription_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             std::io::stdout().flush();
[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] 32 |             let _ = std::io::stdout().flush();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             std::io::stdin().read_line(&mut price_buffer);
[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] 34 |             let _ = std::io::stdin().read_line(&mut price_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             std::io::stdout().flush();
[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] 44 |             let _ = std::io::stdout().flush();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             std::io::stdin().read_line(&mut state_buffer);
[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] 46 |             let _ = std::io::stdin().read_line(&mut state_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |             &bill.show();
[INFO] [stdout]    |             ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |             let _ = &bill.show();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |             &bill.show();
[INFO] [stdout]    |             ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let _ = &bill.show();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             std::io::stdin().read_line(&mut name_buffer);
[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] 65 |             let _ = std::io::stdin().read_line(&mut name_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             &bill.remove(name_buffer);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 66 |             let _ = &bill.remove(name_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |             std::io::stdout().flush();
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 27 |             let _ = std::io::stdout().flush();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             std::io::stdin().read_line(&mut decsription_buffer);
[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] 29 |             let _ = std::io::stdin().read_line(&mut decsription_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             std::io::stdout().flush();
[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] 32 |             let _ = std::io::stdout().flush();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             std::io::stdin().read_line(&mut price_buffer);
[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] 34 |             let _ = std::io::stdin().read_line(&mut price_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             std::io::stdout().flush();
[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] 44 |             let _ = std::io::stdout().flush();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/bill.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         &mut self.bills.remove(index);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let _ = &mut self.bills.remove(index);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             std::io::stdin().read_line(&mut state_buffer);
[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] 46 |             let _ = std::io::stdin().read_line(&mut state_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |             &bill.show();
[INFO] [stdout]    |             ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |             let _ = &bill.show();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |             &bill.show();
[INFO] [stdout]    |             ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let _ = &bill.show();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             std::io::stdin().read_line(&mut name_buffer);
[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] 65 |             let _ = std::io::stdin().read_line(&mut name_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |             &bill.remove(name_buffer);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 66 |             let _ = &bill.remove(name_buffer);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/bill.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         &mut self.bills.remove(index);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let _ = &mut self.bills.remove(index);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "7e3011d65c5a57d1abe6f847d2b5437fb8b735e67a503593856c0511a0151913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e3011d65c5a57d1abe6f847d2b5437fb8b735e67a503593856c0511a0151913", kill_on_drop: false }`
[INFO] [stdout] 7e3011d65c5a57d1abe6f847d2b5437fb8b735e67a503593856c0511a0151913
