[INFO] fetching crate s1_one 0.1.0...
[INFO] testing s1_one-0.1.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate s1_one 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate s1_one 0.1.0
[INFO] finished tweaking crates.io crate s1_one 0.1.0
[INFO] tweaked toml for crates.io crate s1_one 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate s1_one 0.1.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate s1_one 0.1.0 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" "+1.100.0-beta.1" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935
[INFO] running `Command { std: "docker" "start" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935", 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" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling s1_one v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap};
[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::borrow::BorrowMut`
[INFO] [stdout]  --> src/one.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/one.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/one.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/one.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/one.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Mul`
[INFO] [stdout]  --> src/one.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::Mul;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/one.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/one.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/one.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dangle` is never used
[INFO] [stdout]   --> src/one.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn dangle() -> String {
[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 `Panda` is never constructed
[INFO] [stdout]   --> src/one.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Panda {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `eat`, and `detail` are never used
[INFO] [stdout]   --> src/one.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 75 | impl Panda {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 76 |     pub fn new(height: f64, weight: f64) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn eat() {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn detail(&self) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]   --> src/one.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct Color(i32, i32, i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/one.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Point(f64, f64, f64);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddressKind` is never used
[INFO] [stdout]   --> src/one.rs:96:6
[INFO] [stdout]    |
[INFO] [stdout] 96 | enum IpAddressKind {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_add_type` is never used
[INFO] [stdout]    --> src/one.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn get_add_type() -> IpAddressKind {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_v4` is never used
[INFO] [stdout]    --> src/one.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn is_v4(kind: IpAddressKind) -> bool {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]    --> src/one.rs:229:4
[INFO] [stdout]     |
[INFO] [stdout] 229 | fn largest<T>(list: &[T]) -> T
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Offset` is never constructed
[INFO] [stdout]    --> src/one.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 | struct Offset<T> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Option` is never used
[INFO] [stdout]    --> src/one.rs:248:6
[INFO] [stdout]     |
[INFO] [stdout] 248 | enum Option<T> {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]    --> src/one.rs:292:4
[INFO] [stdout]     |
[INFO] [stdout] 292 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]    --> src/one.rs:300:8
[INFO] [stdout]     |
[INFO] [stdout] 300 | struct ImportantExcerpt<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `global_str` is never used
[INFO] [stdout]    --> src/one.rs:304:4
[INFO] [stdout]     |
[INFO] [stdout] 304 | fn global_str() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cacher` is never constructed
[INFO] [stdout]    --> src/one.rs:369:8
[INFO] [stdout]     |
[INFO] [stdout] 369 | struct Cacher<T : Fn(i32) -> i32> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]    --> src/one.rs:376:12
[INFO] [stdout]     |
[INFO] [stdout] 374 | impl <T> Cacher<T> where T : Fn(i32) -> i32 {
[INFO] [stdout]     | ------------------------------------------- associated items in this implementation
[INFO] [stdout] 375 |
[INFO] [stdout] 376 |     pub fn new(calculation: T) -> Cacher<T> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 383 |     fn value(&mut self, arg: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]    --> src/one.rs:413:8
[INFO] [stdout]     |
[INFO] [stdout] 413 | struct Counter {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/one.rs:418:8
[INFO] [stdout]     |
[INFO] [stdout] 417 | impl Counter {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] 418 |     fn new() -> Counter {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling s1_one v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap};
[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::borrow::BorrowMut`
[INFO] [stdout]  --> src/one.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/one.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]    --> src/one.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     let row = vec![
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]    --> src/one.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |     let s2 = format!("{}, {}, {}", "1", "2", s1);
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/one.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let mut scores = vec![11, 10];
[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: `update`
[INFO] [stdout]    --> src/one.rs:190:14
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let &mut update = map2.entry(&"lakers".to_string()).or_insert(&mut 1);
[INFO] [stdout]     |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_update`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/one.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |     let mut r = match f {
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/one.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |     let mut r = match f {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dangle` is never used
[INFO] [stdout]   --> src/one.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn dangle() -> String {
[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 `Panda` is never constructed
[INFO] [stdout]   --> src/one.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Panda {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `eat`, and `detail` are never used
[INFO] [stdout]   --> src/one.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 75 | impl Panda {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 76 |     pub fn new(height: f64, weight: f64) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn eat() {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub fn detail(&self) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]   --> src/one.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct Color(i32, i32, i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/one.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Point(f64, f64, f64);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddressKind` is never used
[INFO] [stdout]   --> src/one.rs:96:6
[INFO] [stdout]    |
[INFO] [stdout] 96 | enum IpAddressKind {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_add_type` is never used
[INFO] [stdout]    --> src/one.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn get_add_type() -> IpAddressKind {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_v4` is never used
[INFO] [stdout]    --> src/one.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn is_v4(kind: IpAddressKind) -> bool {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/one.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         Int(i32),
[INFO] [stdout]     |         --- ^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 129 -         Int(i32),
[INFO] [stdout] 129 +         Int(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/one.rs:130:15
[INFO] [stdout]     |
[INFO] [stdout] 130 |         Float(f64),
[INFO] [stdout]     |         ----- ^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 130 -         Float(f64),
[INFO] [stdout] 130 +         Float(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/one.rs:131:14
[INFO] [stdout]     |
[INFO] [stdout] 131 |         Text(String),
[INFO] [stdout]     |         ---- ^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 131 -         Text(String),
[INFO] [stdout] 131 +         Text(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Offset` is never constructed
[INFO] [stdout]    --> src/one.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 | struct Offset<T> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Option` is never used
[INFO] [stdout]    --> src/one.rs:248:6
[INFO] [stdout]     |
[INFO] [stdout] 248 | enum Option<T> {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]    --> src/one.rs:292:4
[INFO] [stdout]     |
[INFO] [stdout] 292 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]    --> src/one.rs:300:8
[INFO] [stdout]     |
[INFO] [stdout] 300 | struct ImportantExcerpt<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `global_str` is never used
[INFO] [stdout]    --> src/one.rs:304:4
[INFO] [stdout]     |
[INFO] [stdout] 304 | fn global_str() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `collections::HashMap`
[INFO] [stderr]  --> src/main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{collections::HashMap};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]  --> src/one.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::BorrowMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::exit`
[INFO] [stderr]  --> src/one.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::process::exit;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stderr]    --> src/one.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |     let row = vec![
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s2`
[INFO] [stderr]    --> src/one.rs:151:9
[INFO] [stderr]     |
[INFO] [stderr] 151 |     let s2 = format!("{}, {}, {}", "1", "2", s1);
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/one.rs:182:9
[INFO] [stderr]     |
[INFO] [stderr] 182 |     let mut scores = vec![11, 10];
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `update`
[INFO] [stderr]    --> src/one.rs:190:14
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let &mut update = map2.entry(&"lakers".to_string()).or_insert(&mut 1);
[INFO] [stderr]     |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_update`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/one.rs:209:9
[INFO] [stderr]     |
[INFO] [stderr] 209 |     let mut r = match f {
[INFO] [stderr]     |         ----^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/one.rs:209:9
[INFO] [stderr]     |
[INFO] [stderr] 209 |     let mut r = match f {
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: function `dangle` is never used
[INFO] [stderr]   --> src/one.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn dangle() -> String {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Panda` is never constructed
[INFO] [stderr]   --> src/one.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Panda {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `eat`, and `detail` are never used
[INFO] [stderr]   --> src/one.rs:76:12
[INFO] [stderr]    |
[INFO] [stderr] 75 | impl Panda {
[INFO] [stderr]    | ---------- associated items in this implementation
[INFO] [stderr] 76 |     pub fn new(height: f64, weight: f64) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 |     pub fn eat() {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |     pub fn detail(&self) -> String {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Color` is never constructed
[INFO] [stderr]   --> src/one.rs:91:8
[INFO] [stderr]    |
[INFO] [stderr] 91 | struct Color(i32, i32, i32);
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Point` is never constructed
[INFO] [stderr]   --> src/one.rs:93:8
[INFO] [stderr]    |
[INFO] [stderr] 93 | struct Point(f64, f64, f64);
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddressKind` is never used
[INFO] [stderr]   --> src/one.rs:96:6
[INFO] [stderr]    |
[INFO] [stderr] 96 | enum IpAddressKind {
[INFO] [stderr]    |      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_add_type` is never used
[INFO] [stderr]    --> src/one.rs:101:4
[INFO] [stderr]     |
[INFO] [stderr] 101 | fn get_add_type() -> IpAddressKind {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_v4` is never used
[INFO] [stderr]    --> src/one.rs:105:4
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn is_v4(kind: IpAddressKind) -> bool {
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/one.rs:129:13
[INFO] [stderr]     |
[INFO] [stderr] 129 |         Int(i32),
[INFO] [stderr]     |         --- ^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         field in this variant
[INFO] [stderr]     |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 129 -         Int(i32),
[INFO] [stderr] 129 +         Int(()),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/one.rs:130:15
[INFO] [stderr]     |
[INFO] [stderr] 130 |         Float(f64),
[INFO] [stderr]     |         ----- ^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         field in this variant
[INFO] [stderr]     |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 130 -         Float(f64),
[INFO] [stderr] 130 +         Float(()),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/one.rs:131:14
[INFO] [stderr]     |
[INFO] [stderr] 131 |         Text(String),
[INFO] [stderr]     |         ---- ^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         field in this variant
[INFO] [stderr]     |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 131 -         Text(String),
[INFO] [stderr] 131 +         Text(()),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Offset` is never constructed
[INFO] [stderr]    --> src/one.rs:243:8
[INFO] [stderr]     |
[INFO] [stderr] 243 | struct Offset<T> {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Option` is never used
[INFO] [stderr]    --> src/one.rs:248:6
[INFO] [stderr]     |
[INFO] [stderr] 248 | enum Option<T> {
[INFO] [stderr]     |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `longest` is never used
[INFO] [stderr]    --> src/one.rs:292:4
[INFO] [stderr]     |
[INFO] [stderr] 292 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stderr]    --> src/one.rs:300:8
[INFO] [stderr]     |
[INFO] [stderr] 300 | struct ImportantExcerpt<'a> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `global_str` is never used
[INFO] [stderr]    --> src/one.rs:304:4
[INFO] [stderr]     |
[INFO] [stderr] 304 | fn global_str() {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `s1_one` (bin "s1_one" test) generated 25 warnings (run `cargo fix --bin "s1_one" -p s1_one --tests` to apply 9 suggestions)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/build/s1_one/2ab634dd38362801/out/s1_one-2ab634dd38362801)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test one::test::expensive_test ... ignored
[INFO] [stdout] test one::other_slice ... ok
[INFO] [stdout] test one::hash_map_sample ... ok
[INFO] [stdout] test one::string_sample ... ok
[INFO] [stdout] test one::error_handling ... FAILED
[INFO] [stdout] test one::test::another - should panic ... ok
[INFO] [stdout] test one::closure_context ... ok
[INFO] [stdout] test one::generic_sample ... ok
[INFO] [stdout] test one::test::exploration ... ok
[INFO] [stdout] test one::vector_sample ... ok
[INFO] [stdout] test one::test::it_works ... ok
[INFO] [stdout] test one::using_other_iterator_trait_methods ... ok
[INFO] [stdout] test one::closures_sample ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- one::error_handling stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'one::error_handling' (174) panicked at src/one.rs:211:19:
[INFO] [stdout] No such file or directory (os error 2)
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x600d50e99db1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x600d50eae04a - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    2:     0x600d50e9e09c - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x600d50e760d6 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x600d50e92309 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]    5:     0x600d50e2e950 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]    6:     0x600d50e924c2 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x600d50e76182 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x600d50e6ee69 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x600d50e76d8d - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]   10:     0x600d50eae77c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]   11:     0x600d50e20886 - <s1_one[aecc523de4a6953]::one::error_handling::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   12:     0x600d50e21d9b - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]   13:     0x600d50e2ef75 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]   14:     0x600d50e28864 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]   15:     0x600d50e32002 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   16:     0x600d50e9960f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   17:     0x7c299b857dfa - <unknown>
[INFO] [stdout]   18:     0x7c299b8eb3d4 - clone
[INFO] [stdout]   19:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     one::error_handling
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 11 passed; 1 failed; 1 ignored; 0 measured; 0 filtered out; finished in 2.00s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin s1_one`
[INFO] running `Command { std: "docker" "inspect" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935", kill_on_drop: false }`
[INFO] [stdout] 020e7043a01112f5de6a7c0193fc84421aa2102e45dfbb638c2a9ddb1dae2935
