[INFO] fetching crate guessing_game_viggin 0.1.0...
[INFO] testing guessing_game_viggin-0.1.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate guessing_game_viggin 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate guessing_game_viggin 0.1.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate guessing_game_viggin 0.1.0
[INFO] finished tweaking crates.io crate guessing_game_viggin 0.1.0
[INFO] tweaked toml for crates.io crate guessing_game_viggin 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate guessing_game_viggin 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] feaa5411ce88bdf28117e9cdf5c0192aeb0218e23294f88cdc10f5017bfcfd5b
[INFO] running `Command { std: "docker" "start" "-a" "feaa5411ce88bdf28117e9cdf5c0192aeb0218e23294f88cdc10f5017bfcfd5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "feaa5411ce88bdf28117e9cdf5c0192aeb0218e23294f88cdc10f5017bfcfd5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feaa5411ce88bdf28117e9cdf5c0192aeb0218e23294f88cdc10f5017bfcfd5b", kill_on_drop: false }`
[INFO] [stdout] feaa5411ce88bdf28117e9cdf5c0192aeb0218e23294f88cdc10f5017bfcfd5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 873300ce06550756ee32e55fc79b10496994db4e9073cb77918f9a4faa35ffb0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "873300ce06550756ee32e55fc79b10496994db4e9073cb77918f9a4faa35ffb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]    Compiling futures-core v0.3.4
[INFO] [stderr]    Compiling futures-sink v0.3.4
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling futures-io v0.3.4
[INFO] [stderr]    Compiling futures-task v0.3.4
[INFO] [stderr]    Compiling openssl v0.10.28
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]    Compiling dtoa v0.4.5
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling openssl-sys v0.9.54
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling tokio-macros v0.2.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling futures-channel v0.3.4
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling unicode-normalization v0.1.12
[INFO] [stderr]    Compiling http v0.2.0
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling tokio v0.2.11
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling pin-project v0.4.8
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling tokio-tls v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling h2 v0.2.1
[INFO] [stderr]    Compiling hyper v0.13.2
[INFO] [stderr]    Compiling hyper-tls v0.4.1
[INFO] [stderr]    Compiling reqwest v0.10.1
[INFO] [stderr]    Compiling guessing_game_viggin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/bin/tests/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> src/bin/errors/errors.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     read_username_from_file_v2();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     read_username_from_file_v3();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fs::remove_file("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:56
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:62
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyBound`
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyPlusSyntax`
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyWow`
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function_with_where`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returns_summarizable`
[INFO] [stdout]   --> src/bin/generics/traits.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_copy`
[INFO] [stdout]   --> src/bin/generics/traits.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_clone`
[INFO] [stdout]    --> src/bin/generics/traits.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_ref`
[INFO] [stdout]    --> src/bin/generics/traits.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]    --> src/bin/generics/traits.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct Pair<T>{
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp_display`
[INFO] [stdout]    --> src/bin/generics/traits.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_this_an_extension_function`
[INFO] [stdout]    --> src/bin/generics/traits.rs:154:4
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn is_this_an_extension_function(){
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_with_an_announcement`
[INFO] [stdout]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]   --> src/bin/generics/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn take_ownership(t: Tweet){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyBound` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyWow` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `era`
[INFO] [stdout]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn era(&self) -> u32 {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_x`
[INFO] [stdout]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word_count`
[INFO] [stdout]   --> src/bin/hash/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/closures/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let x = 4;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zzip`
[INFO] [stdout]   --> src/bin/hash/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/bin/collections/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s2` is never read
[INFO] [stdout]   --> src/bin/collections/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     s2 = String::from("xxx");
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shoes_in_my_size`
[INFO] [stdout]   --> src/bin/closures/iterators.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bin/closures/iterators.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn new() -> Counter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/bin/closures/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inner_func`
[INFO] [stdout]   --> src/bin/closures/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn inner_func(){
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/collections/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/collections/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut sss = SSS {
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `accessing`
[INFO] [stdout]   --> src/bin/collections/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn accessing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stdout]   --> src/bin/collections/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `edit_in_place`
[INFO] [stdout]   --> src/bin/collections/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn edit_in_place() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_vec`
[INFO] [stdout]   --> src/bin/collections/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn enum_vec() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `stringss`
[INFO] [stdout]   --> src/bin/collections/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn stringss() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_of_stracts`
[INFO] [stdout]   --> src/bin/collections/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn vec_of_stracts() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_entry_in_a_map`
[INFO] [stdout]   --> src/bin/collections/main.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn update_entry_in_a_map() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Id` should have a snake case name
[INFO] [stdout]   --> src/bin/collections/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Id: String,
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DA`
[INFO] [stdout]   --> src/bin/enums/main.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct DA {
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `resp`
[INFO] [stdout]   --> src/bin/http_async/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/bin/http_async/main.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "873300ce06550756ee32e55fc79b10496994db4e9073cb77918f9a4faa35ffb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "873300ce06550756ee32e55fc79b10496994db4e9073cb77918f9a4faa35ffb0", kill_on_drop: false }`
[INFO] [stdout] 873300ce06550756ee32e55fc79b10496994db4e9073cb77918f9a4faa35ffb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86f7a5d99dbbcfb989f55ea09d5b2e55dc0e6b7245cfa8533d4f5cfe0edd421d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "86f7a5d99dbbcfb989f55ea09d5b2e55dc0e6b7245cfa8533d4f5cfe0edd421d", kill_on_drop: false }`
[INFO] [stderr]    Compiling guessing_game_viggin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:56
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:62
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `resp`
[INFO] [stdout]   --> src/bin/http_async/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/bin/http_async/main.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyBound`
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyPlusSyntax`
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyWow`
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function_with_where`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returns_summarizable`
[INFO] [stdout]   --> src/bin/generics/traits.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_copy`
[INFO] [stdout]   --> src/bin/generics/traits.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_clone`
[INFO] [stdout]    --> src/bin/generics/traits.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_ref`
[INFO] [stdout]    --> src/bin/generics/traits.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]    --> src/bin/generics/traits.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct Pair<T>{
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp_display`
[INFO] [stdout]    --> src/bin/generics/traits.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_this_an_extension_function`
[INFO] [stdout]    --> src/bin/generics/traits.rs:154:4
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn is_this_an_extension_function(){
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_with_an_announcement`
[INFO] [stdout]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]   --> src/bin/generics/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn take_ownership(t: Tweet){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyBound` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyWow` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `era`
[INFO] [stdout]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn era(&self) -> u32 {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_x`
[INFO] [stdout]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/closures/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let x = 4;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shoes_in_my_size`
[INFO] [stdout]   --> src/bin/closures/iterators.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bin/closures/iterators.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn new() -> Counter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/bin/closures/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inner_func`
[INFO] [stdout]   --> src/bin/closures/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn inner_func(){
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `can_hold`
[INFO] [stdout]   --> src/bin/tests/main.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DA`
[INFO] [stdout]   --> src/bin/enums/main.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct DA {
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word_count`
[INFO] [stdout]   --> src/bin/hash/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zzip`
[INFO] [stdout]   --> src/bin/hash/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> src/bin/errors/errors.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     read_username_from_file_v2();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     read_username_from_file_v3();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fs::remove_file("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:56
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:62
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib/config.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyBound`
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyPlusSyntax`
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `notifyWow`
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function`
[INFO] [stdout]   --> src/bin/generics/traits.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `some_function_with_where`
[INFO] [stdout]   --> src/bin/generics/traits.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `returns_summarizable`
[INFO] [stdout]   --> src/bin/generics/traits.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_copy`
[INFO] [stdout]   --> src/bin/generics/traits.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_clone`
[INFO] [stdout]    --> src/bin/generics/traits.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_ref`
[INFO] [stdout]    --> src/bin/generics/traits.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]    --> src/bin/generics/traits.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | struct Pair<T>{
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp_display`
[INFO] [stdout]    --> src/bin/generics/traits.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_this_an_extension_function`
[INFO] [stdout]    --> src/bin/generics/traits.rs:154:4
[INFO] [stdout]     |
[INFO] [stdout] 154 | fn is_this_an_extension_function(){
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_with_an_announcement`
[INFO] [stdout]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]   --> src/bin/generics/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn take_ownership(t: Tweet){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyBound` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notifyWow` should have a snake case name
[INFO] [stdout]   --> src/bin/generics/traits.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DA`
[INFO] [stdout]   --> src/bin/enums/main.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct DA {
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `era`
[INFO] [stdout]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn era(&self) -> u32 {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_x`
[INFO] [stdout]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/bin/closures/iterators.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word_count`
[INFO] [stdout]   --> src/bin/hash/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/lib/config.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c1`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c2`
[INFO] [stdout]   --> src/lib/pub_use.rs:31:34
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stdout]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/bin/collections/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s2` is never read
[INFO] [stdout]   --> src/bin/collections/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     s2 = String::from("xxx");
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/collections/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[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/bin/collections/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut sss = SSS {
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]   --> src/bin/errors/errors.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zzip`
[INFO] [stdout]   --> src/bin/hash/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `accessing`
[INFO] [stdout]   --> src/bin/collections/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn accessing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stdout]   --> src/bin/collections/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `edit_in_place`
[INFO] [stdout]   --> src/bin/collections/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn edit_in_place() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_vec`
[INFO] [stdout]   --> src/bin/collections/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn enum_vec() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `stringss`
[INFO] [stdout]   --> src/bin/collections/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn stringss() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_of_stracts`
[INFO] [stdout]   --> src/bin/collections/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn vec_of_stracts() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_entry_in_a_map`
[INFO] [stdout]   --> src/bin/collections/main.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn update_entry_in_a_map() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Id` should have a snake case name
[INFO] [stdout]   --> src/bin/collections/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Id: String,
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     read_username_from_file_v2();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     read_username_from_file_v3();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/errors/errors.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         fs::remove_file("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/closures/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let x = 4;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/bin/closures/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inner_func`
[INFO] [stdout]   --> src/bin/closures/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn inner_func(){
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `resp`
[INFO] [stdout]   --> src/bin/http_async/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> src/bin/http_async/main.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/bin/collections/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s2` is never read
[INFO] [stdout]   --> src/bin/collections/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     s2 = String::from("xxx");
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/collections/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[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/bin/collections/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut sss = SSS {
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `accessing`
[INFO] [stdout]   --> src/bin/collections/main.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn accessing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stdout]   --> src/bin/collections/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `edit_in_place`
[INFO] [stdout]   --> src/bin/collections/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn edit_in_place() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_vec`
[INFO] [stdout]   --> src/bin/collections/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn enum_vec() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `stringss`
[INFO] [stdout]   --> src/bin/collections/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn stringss() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_of_stracts`
[INFO] [stdout]   --> src/bin/collections/main.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn vec_of_stracts() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_entry_in_a_map`
[INFO] [stdout]   --> src/bin/collections/main.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn update_entry_in_a_map() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Id` should have a snake case name
[INFO] [stdout]   --> src/bin/collections/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         Id: String,
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "86f7a5d99dbbcfb989f55ea09d5b2e55dc0e6b7245cfa8533d4f5cfe0edd421d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86f7a5d99dbbcfb989f55ea09d5b2e55dc0e6b7245cfa8533d4f5cfe0edd421d", kill_on_drop: false }`
[INFO] [stdout] 86f7a5d99dbbcfb989f55ea09d5b2e55dc0e6b7245cfa8533d4f5cfe0edd421d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c7e756d7410ab3e47b7a9ad06b80298398b0756b977413ea49f70799791547cb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c7e756d7410ab3e47b7a9ad06b80298398b0756b977413ea49f70799791547cb", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/lib/config.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib/config.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c1`
[INFO] [stderr]   --> src/lib/pub_use.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c2`
[INFO] [stderr]   --> src/lib/pub_use.rs:31:34
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/lib/config.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/lib/config.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let args: Vec<String> = env::args().collect();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c1`
[INFO] [stderr]   --> src/lib/pub_use.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                ^^ help: if this is intentional, prefix it with an underscore: `_c1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c2`
[INFO] [stderr]   --> src/lib/pub_use.rs:31:34
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
[INFO] [stderr]    |                                  ^^ help: if this is intentional, prefix it with an underscore: `_c2`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word_count`
[INFO] [stderr]   --> src/bin/hash/main.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `zzip`
[INFO] [stderr]   --> src/bin/hash/main.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:56
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:62
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:35
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:41
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyBound`
[INFO] [stderr]   --> src/bin/generics/traits.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyPlusSyntax`
[INFO] [stderr]   --> src/bin/generics/traits.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyWow`
[INFO] [stderr]   --> src/bin/generics/traits.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `era`
[INFO] [stderr]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn era(&self) -> u32 {
[INFO] [stderr]   |            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_x`
[INFO] [stderr]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function_with_where`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `returns_summarizable`
[INFO] [stderr]   --> src/bin/generics/traits.rs:78:4
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_copy`
[INFO] [stderr]   --> src/bin/generics/traits.rs:88:4
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta`
[INFO] [stderr]   --> src/bin/errors/errors.rs:31:15
[INFO] [stderr]    |
[INFO] [stderr] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stderr]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_clone`
[INFO] [stderr]    --> src/bin/generics/traits.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     read_username_from_file_v2();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     read_username_from_file_v3();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         fs::remove_file("hello.txt");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_ref`
[INFO] [stderr]    --> src/bin/generics/traits.rs:113:4
[INFO] [stderr]     |
[INFO] [stderr] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pair`
[INFO] [stderr]    --> src/bin/generics/traits.rs:123:8
[INFO] [stderr]     |
[INFO] [stderr] 123 | struct Pair<T>{
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `cmp_display`
[INFO] [stderr]    --> src/bin/generics/traits.rs:129:8
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn cmp_display(&self) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/bin/minigrep/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_this_an_extension_function`
[INFO] [stderr]    --> src/bin/generics/traits.rs:154:4
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn is_this_an_extension_function(){
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest_with_an_announcement`
[INFO] [stderr]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_ownership`
[INFO] [stderr]   --> src/bin/generics/main.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn take_ownership(t: Tweet){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `era`
[INFO] [stderr]  --> src/bin/guessing_game/rect.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn era(&self) -> u32 {
[INFO] [stderr]   |            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyBound` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DA`
[INFO] [stderr]   --> src/bin/enums/main.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | struct DA {
[INFO] [stderr]    |        ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyWow` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_x`
[INFO] [stderr]   --> src/bin/guessing_game/rect.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn print_x(&self , format: &str) {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DA`
[INFO] [stderr]   --> src/bin/enums/main.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | struct DA {
[INFO] [stderr]    |        ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/bin/collections/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s2` is never read
[INFO] [stderr]   --> src/bin/collections/main.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     s2 = String::from("xxx");
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `can_hold`
[INFO] [stderr]   --> src/bin/tests/main.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/collections/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/collections/main.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let mut sss = SSS {
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `accessing`
[INFO] [stderr]   --> src/bin/collections/main.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn accessing() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]  --> src/bin/closures/iterators.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     use super::*;
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stderr]   --> src/bin/collections/main.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `edit_in_place`
[INFO] [stderr]   --> src/bin/collections/main.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn edit_in_place() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/bin/closures/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let x = 4;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enum_vec`
[INFO] [stderr]   --> src/bin/collections/main.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn enum_vec() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]  --> src/bin/closures/main.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta`
[INFO] [stderr]   --> src/bin/errors/errors.rs:31:15
[INFO] [stderr]    |
[INFO] [stderr] 31 |     if let Ok(meta) = f.metadata() {
[INFO] [stderr]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `stringss`
[INFO] [stderr]   --> src/bin/collections/main.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn stringss() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inner_func`
[INFO] [stderr]   --> src/bin/closures/main.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn inner_func(){
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vec_of_stracts`
[INFO] [stderr]   --> src/bin/collections/main.rs:75:4
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn vec_of_stracts() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     read_username_from_file_v2();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `update_entry_in_a_map`
[INFO] [stderr]   --> src/bin/collections/main.rs:97:4
[INFO] [stderr]    |
[INFO] [stderr] 97 | fn update_entry_in_a_map() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     read_username_from_file_v3();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `Id` should have a snake case name
[INFO] [stderr]   --> src/bin/collections/main.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 |         Id: String,
[INFO] [stderr]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/errors/errors.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         fs::remove_file("hello.txt");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/bin/closures/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let x = 4;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shoes_in_my_size`
[INFO] [stderr]   --> src/bin/closures/iterators.rs:61:4
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/bin/closures/iterators.rs:92:8
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn new() -> Counter {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stderr]  --> src/bin/closures/main.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn simulated_expensive_calculation(intensity: u32) -> u32 {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inner_func`
[INFO] [stderr]   --> src/bin/closures/main.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn inner_func(){
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/bin/collections/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let v: Vec<u128> = Vec::new();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `s2` is never read
[INFO] [stderr]   --> src/bin/collections/main.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     s2 = String::from("xxx");
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/collections/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let mut v = vec![1, 2, 3, 4, 5];
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/collections/main.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let mut sss = SSS {
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `accessing`
[INFO] [stderr]   --> src/bin/collections/main.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn accessing() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `no_mutable_and_imutable_in_same_scope`
[INFO] [stderr]   --> src/bin/collections/main.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn no_mutable_and_imutable_in_same_scope() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `edit_in_place`
[INFO] [stderr]   --> src/bin/collections/main.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn edit_in_place() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enum_vec`
[INFO] [stderr]   --> src/bin/collections/main.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn enum_vec() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `stringss`
[INFO] [stderr]   --> src/bin/collections/main.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn stringss() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vec_of_stracts`
[INFO] [stderr]   --> src/bin/collections/main.rs:75:4
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn vec_of_stracts() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `update_entry_in_a_map`
[INFO] [stderr]   --> src/bin/collections/main.rs:97:4
[INFO] [stderr]    |
[INFO] [stderr] 97 | fn update_entry_in_a_map() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `Id` should have a snake case name
[INFO] [stderr]   --> src/bin/collections/main.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 78 |         Id: String,
[INFO] [stderr]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resp`
[INFO] [stderr]   --> src/bin/http_async/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file`
[INFO] [stderr]   --> src/bin/http_async/main.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:56
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |                                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:62
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |                                                              ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:35
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                   ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:41
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyBound`
[INFO] [stderr]   --> src/bin/generics/traits.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyPlusSyntax`
[INFO] [stderr]   --> src/bin/generics/traits.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `notifyWow`
[INFO] [stderr]   --> src/bin/generics/traits.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function`
[INFO] [stderr]   --> src/bin/generics/traits.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn some_function<T: Display + Clone, U: Clone + Debug>(t: T, u: U) -> i32 {3}
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `some_function_with_where`
[INFO] [stderr]   --> src/bin/generics/traits.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn some_function_with_where<T, U>(t: T, u: U) -> i32
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `returns_summarizable`
[INFO] [stderr]   --> src/bin/generics/traits.rs:78:4
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn returns_summarizable() -> impl Summary {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_copy`
[INFO] [stderr]   --> src/bin/generics/traits.rs:88:4
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn largest_copy<T: PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_clone`
[INFO] [stderr]    --> src/bin/generics/traits.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn largest_clone<T>(list: &[T]) -> T
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_ref`
[INFO] [stderr]    --> src/bin/generics/traits.rs:113:4
[INFO] [stderr]     |
[INFO] [stderr] 113 | fn largest_ref<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pair`
[INFO] [stderr]    --> src/bin/generics/traits.rs:123:8
[INFO] [stderr]     |
[INFO] [stderr] 123 | struct Pair<T>{
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `cmp_display`
[INFO] [stderr]    --> src/bin/generics/traits.rs:129:8
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn cmp_display(&self) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_this_an_extension_function`
[INFO] [stderr]    --> src/bin/generics/traits.rs:154:4
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn is_this_an_extension_function(){
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest_with_an_announcement`
[INFO] [stderr]   --> src/bin/generics/lifetimes.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_ownership`
[INFO] [stderr]   --> src/bin/generics/main.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn take_ownership(t: Tweet){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyBound` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn notifyBound<T: Summary>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^^^ help: convert the identifier to snake case: `notify_bound`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyPlusSyntax` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn notifyPlusSyntax(item: impl Summary + Display) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `notify_plus_syntax`
[INFO] [stderr] 
[INFO] [stderr] warning: function `notifyWow` should have a snake case name
[INFO] [stderr]   --> src/bin/generics/traits.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn notifyWow<T: Summary + Display>(item: T) {
[INFO] [stderr]    |        ^^^^^^^^^ help: convert the identifier to snake case: `notify_wow`
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resp`
[INFO] [stderr]   --> src/bin/http_async/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let resp = reqwest::get("https://httpbin.org/ip")
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_resp`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_username_from_file`
[INFO] [stderr]   --> src/bin/http_async/main.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word_count`
[INFO] [stderr]   --> src/bin/hash/main.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let word_count : HashMap<_,_> = v.iter()
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `zzip`
[INFO] [stderr]   --> src/bin/hash/main.rs:60:4
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn zzip(v : &Vec<u8>){
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mygrep-395cc250056df64c
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test add_two::tests::test_add ... ok
[INFO] [stdout] test search::tests::case_sensitive ... ok
[INFO] [stdout] test search::tests::case_insensitive ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- search::tests::case_insensitive stdout ----
[INFO] [stdout] thread 'search::tests::case_insensitive' panicked at 'assertion failed: `(left == right)`
[INFO] [stdout]   left: `["Rust:", "Trust me."]`,
[INFO] [stdout]  right: `[]`', src/lib/search.rs:40:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ef1a1067d0 - std::backtrace_rs::backtrace::libunwind::trace::h577ea05e9ca4629a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stdout]    1:     0x55ef1a1067d0 - std::backtrace_rs::backtrace::trace_unsynchronized::h50b9b72b84c7dd56
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x55ef1a1067d0 - std::sys_common::backtrace::_print_fmt::h6541cf9823837fac
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:79
[INFO] [stdout]    3:     0x55ef1a1067d0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf64fbff071026df5
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:58
[INFO] [stdout]    4:     0x55ef1a129bbc - core::fmt::write::h9ddafa4860d8adff
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/fmt/mod.rs:1082
[INFO] [stdout]    5:     0x55ef1a0af955 - std::io::Write::write_fmt::h50a71e2460ce07da
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/mod.rs:1514
[INFO] [stdout]    6:     0x55ef1a101541 - std::io::impls::<impl std::io::Write for alloc::boxed::Box<W>>::write_fmt::h9bbd3fed8160d0d2
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/impls.rs:176
[INFO] [stdout]    7:     0x55ef1a108c50 - std::sys_common::backtrace::_print::ha25f9ff5080d886d
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:61
[INFO] [stdout]    8:     0x55ef1a108c50 - std::sys_common::backtrace::print::h213e8aa8dc5405c0
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:48
[INFO] [stdout]    9:     0x55ef1a108c50 - std::panicking::default_hook::{{closure}}::h6482fae49ef9d963
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:200
[INFO] [stdout]   10:     0x55ef1a108946 - std::panicking::default_hook::he30ad7589e0970f9
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:216
[INFO] [stdout]   11:     0x55ef1a1092b3 - std::panicking::rust_panic_with_hook::haa1ed36ada4ffb03
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:569
[INFO] [stdout]   12:     0x55ef1a108e89 - std::panicking::begin_panic_handler::{{closure}}::h7001af1bb21aeaeb
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:476
[INFO] [stdout]   13:     0x55ef1a106c5c - std::sys_common::backtrace::__rust_end_short_backtrace::h39910f557f5f2367
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:153
[INFO] [stdout]   14:     0x55ef1a108e49 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:475
[INFO] [stdout]   15:     0x55ef1a108dfb - std::panicking::begin_panic_fmt::hc1b1320af38b7e12
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:429
[INFO] [stdout]   16:     0x55ef1a0ac21c - mygrep::search::tests::case_insensitive::h8918d4f5b7ff4a91
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/search.rs:40
[INFO] [stdout]   17:     0x55ef1a0abf9a - mygrep::search::tests::case_insensitive::{{closure}}::h1c440bb1be3e6142
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/search.rs:32
[INFO] [stdout]   18:     0x55ef1a0a6c1e - core::ops::function::FnOnce::call_once::h1a4adb0c21178709
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   19:     0x55ef1a0d8233 - core::ops::function::FnOnce::call_once::hd04d57b5cf16f85a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   20:     0x55ef1a0d8233 - test::__rust_begin_short_backtrace::hd8e9a8c5a2e43388
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:517
[INFO] [stdout]   21:     0x55ef1a0d6703 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h3c3db8a500c1a19a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   22:     0x55ef1a0d6703 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h043e9ebcbe360c80
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:308
[INFO] [stdout]   23:     0x55ef1a0d6703 - std::panicking::try::do_call::h47c2fb275506c2e8
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stdout]   24:     0x55ef1a0d6703 - std::panicking::try::h569c20f0e99453b4
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stdout]   25:     0x55ef1a0d6703 - std::panic::catch_unwind::hb33c6d0f01540d23
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stdout]   26:     0x55ef1a0d6703 - test::run_test_in_process::hc0ce562d167e51cf
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:544
[INFO] [stdout]   27:     0x55ef1a0d6703 - test::run_test::run_test_inner::{{closure}}::hd3120982fcd71544
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:450
[INFO] [stdout]   28:     0x55ef1a0aed86 - std::sys_common::backtrace::__rust_begin_short_backtrace::h84f8bc12cc4cdac6
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:137
[INFO] [stdout]   29:     0x55ef1a0b3fb5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hb8b5fa0ba425d4db
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/mod.rs:458
[INFO] [stdout]   30:     0x55ef1a0b3fb5 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc4b84b244cf55f75
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:308
[INFO] [stdout]   31:     0x55ef1a0b3fb5 - std::panicking::try::do_call::ha31922ad8fa17753
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stdout]   32:     0x55ef1a0b3fb5 - std::panicking::try::h38a6da203722ae6e
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stdout]   33:     0x55ef1a0b3fb5 - std::panic::catch_unwind::h83afce167c9062b9
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stdout]   34:     0x55ef1a0b3fb5 - std::thread::Builder::spawn_unchecked::{{closure}}::h160689155590a70c
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/mod.rs:457
[INFO] [stdout]   35:     0x55ef1a0b3fb5 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7dbf17a455132a46
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   36:     0x55ef1a10fa6a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h670c50864ac2cb92
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   37:     0x55ef1a10fa6a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h2511952749086d81
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   38:     0x55ef1a10fa6a - std::sys::unix::thread::Thread::new::thread_start::h5ad4ddffe24373a8
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys/unix/thread.rs:87
[INFO] [stdout]   39:     0x7f8cbe1c7609 - start_thread
[INFO] [stdout]   40:     0x7f8cbe0d3103 - clone
[INFO] [stdout]   41:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     search::tests::case_insensitive
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] running `Command { std: "docker" "inspect" "c7e756d7410ab3e47b7a9ad06b80298398b0756b977413ea49f70799791547cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e756d7410ab3e47b7a9ad06b80298398b0756b977413ea49f70799791547cb", kill_on_drop: false }`
[INFO] [stdout] c7e756d7410ab3e47b7a9ad06b80298398b0756b977413ea49f70799791547cb
