[INFO] cloning repository https://github.com/Crypto-Neutron/Rust-Practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Crypto-Neutron/Rust-Practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypto-Neutron%2FRust-Practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypto-Neutron%2FRust-Practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9381bd06a6c4ca03d9599bf65ba63963eb70f7a4
[INFO] testing Crypto-Neutron/Rust-Practice against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypto-Neutron%2FRust-Practice" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Crypto-Neutron/Rust-Practice on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Crypto-Neutron/Rust-Practice
[INFO] finished tweaking git repo https://github.com/Crypto-Neutron/Rust-Practice
[INFO] tweaked toml for git repo https://github.com/Crypto-Neutron/Rust-Practice written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Crypto-Neutron/Rust-Practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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] 4a71340e89e5c838e16d37a83d573f020b3cca39893c1a990bd4102adbbf75f1
[INFO] running `Command { std: "docker" "start" "-a" "4a71340e89e5c838e16d37a83d573f020b3cca39893c1a990bd4102adbbf75f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a71340e89e5c838e16d37a83d573f020b3cca39893c1a990bd4102adbbf75f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a71340e89e5c838e16d37a83d573f020b3cca39893c1a990bd4102adbbf75f1", kill_on_drop: false }`
[INFO] [stdout] 4a71340e89e5c838e16d37a83d573f020b3cca39893c1a990bd4102adbbf75f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15f254b39a0658293041952f844e2061d5b6f4d4b2dc47b156701f88c94ed3f7
[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" "15f254b39a0658293041952f844e2061d5b6f4d4b2dc47b156701f88c94ed3f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling study-session v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `hello_world`
[INFO] [stdout]  --> src/elementary/hello_world.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hello_world(){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `personal_greeting`
[INFO] [stdout]  --> src/elementary/hello_world.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn personal_greeting(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `discriminitory_greeting`
[INFO] [stdout]   --> src/elementary/hello_world.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn discriminitory_greeting(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequence_addition`
[INFO] [stdout]  --> src/elementary/maths.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn sequence_addition(max_num: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequence_product`
[INFO] [stdout]   --> src/elementary/maths.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn sequence_product(max_num: i32) -> i32{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `odds_and_fives`
[INFO] [stdout]   --> src/elementary/maths.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn odds_and_fives(max_num: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_or_product`
[INFO] [stdout]   --> src/elementary/maths.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn sum_or_product() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multiplication_table`
[INFO] [stdout]   --> src/elementary/maths.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn multiplication_table(max_num: u32){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_primes`
[INFO] [stdout]    --> src/elementary/maths.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub fn print_primes(max_num: i128){
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_prime`
[INFO] [stdout]    --> src/elementary/maths.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn is_prime(val: i128) -> bool{
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_leap_years`
[INFO] [stdout]    --> src/elementary/maths.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn print_leap_years(){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `guessing_game`
[INFO] [stdout]    --> src/elementary/maths.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn guessing_game(){
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `alternating_series`
[INFO] [stdout]    --> src/elementary/maths.rs:206:8
[INFO] [stdout]     |
[INFO] [stdout] 206 | pub fn alternating_series(max_k: u32){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_elem`
[INFO] [stdout]  --> src/lists_strings/lists.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn largest_elem(full_list: Vec<i32>)->i32{
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse_list`
[INFO] [stdout]   --> src/lists_strings/lists.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn reverse_list<T: Copy>(list: &mut Vec<T>){
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `occur_in_list`
[INFO] [stdout]   --> src/lists_strings/lists.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn occur_in_list<T: PartialEq>(value: &T ,list: &Vec<T>) -> bool{
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_odds`
[INFO] [stdout]   --> src/lists_strings/lists.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn return_odds<T>(list: &[T]) -> Vec<&T>{
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_sum`
[INFO] [stdout]   --> src/lists_strings/lists.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn vec_sum(list: &Vec<f32>) -> f32{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_sum_recursive`
[INFO] [stdout]   --> src/lists_strings/lists.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn vec_sum_recursive<T: Add<Output = T> + Copy + Default>(list: &[T]) -> T{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_all`
[INFO] [stdout]   --> src/lists_strings/lists.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn to_all<T>(f: fn(x: &T)->T, list: &Vec<T>) -> Vec<T>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square`
[INFO] [stdout]    --> src/lists_strings/lists.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn square(x: &f32) -> f32{
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quadratic`
[INFO] [stdout]    --> src/lists_strings/lists.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn quadratic(x: &f32) -> f32{
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_palindrome`
[INFO] [stdout]  --> src/lists_strings/strings.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn is_palindrome(phrase: &str) -> bool{
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_whitespace`
[INFO] [stdout]   --> src/lists_strings/strings.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn remove_whitespace(s: &mut String){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square`
[INFO] [stdout]   --> src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn square(x: &f32) -> f32{
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quadratic`
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn quadratic(x: &f32) -> f32{
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.33s
[INFO] running `Command { std: "docker" "inspect" "15f254b39a0658293041952f844e2061d5b6f4d4b2dc47b156701f88c94ed3f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15f254b39a0658293041952f844e2061d5b6f4d4b2dc47b156701f88c94ed3f7", kill_on_drop: false }`
[INFO] [stdout] 15f254b39a0658293041952f844e2061d5b6f4d4b2dc47b156701f88c94ed3f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b694e091bb65e6020e5a2092ccf4e989fea73c980ef6b23c04ec88da67484ee5
[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" "b694e091bb65e6020e5a2092ccf4e989fea73c980ef6b23c04ec88da67484ee5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling study-session v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `hello_world`
[INFO] [stdout]  --> src/elementary/hello_world.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hello_world(){
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `personal_greeting`
[INFO] [stdout]  --> src/elementary/hello_world.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn personal_greeting(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `discriminitory_greeting`
[INFO] [stdout]   --> src/elementary/hello_world.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn discriminitory_greeting(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequence_addition`
[INFO] [stdout]  --> src/elementary/maths.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn sequence_addition(max_num: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sequence_product`
[INFO] [stdout]   --> src/elementary/maths.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn sequence_product(max_num: i32) -> i32{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `odds_and_fives`
[INFO] [stdout]   --> src/elementary/maths.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn odds_and_fives(max_num: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_or_product`
[INFO] [stdout]   --> src/elementary/maths.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn sum_or_product() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `multiplication_table`
[INFO] [stdout]   --> src/elementary/maths.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn multiplication_table(max_num: u32){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_primes`
[INFO] [stdout]    --> src/elementary/maths.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub fn print_primes(max_num: i128){
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_prime`
[INFO] [stdout]    --> src/elementary/maths.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn is_prime(val: i128) -> bool{
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_leap_years`
[INFO] [stdout]    --> src/elementary/maths.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn print_leap_years(){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `guessing_game`
[INFO] [stdout]    --> src/elementary/maths.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn guessing_game(){
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `alternating_series`
[INFO] [stdout]    --> src/elementary/maths.rs:206:8
[INFO] [stdout]     |
[INFO] [stdout] 206 | pub fn alternating_series(max_k: u32){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest_elem`
[INFO] [stdout]  --> src/lists_strings/lists.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn largest_elem(full_list: Vec<i32>)->i32{
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse_list`
[INFO] [stdout]   --> src/lists_strings/lists.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn reverse_list<T: Copy>(list: &mut Vec<T>){
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `occur_in_list`
[INFO] [stdout]   --> src/lists_strings/lists.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn occur_in_list<T: PartialEq>(value: &T ,list: &Vec<T>) -> bool{
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_odds`
[INFO] [stdout]   --> src/lists_strings/lists.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn return_odds<T>(list: &[T]) -> Vec<&T>{
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_sum`
[INFO] [stdout]   --> src/lists_strings/lists.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn vec_sum(list: &Vec<f32>) -> f32{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vec_sum_recursive`
[INFO] [stdout]   --> src/lists_strings/lists.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn vec_sum_recursive<T: Add<Output = T> + Copy + Default>(list: &[T]) -> T{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_all`
[INFO] [stdout]   --> src/lists_strings/lists.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn to_all<T>(f: fn(x: &T)->T, list: &Vec<T>) -> Vec<T>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square`
[INFO] [stdout]    --> src/lists_strings/lists.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn square(x: &f32) -> f32{
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quadratic`
[INFO] [stdout]    --> src/lists_strings/lists.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn quadratic(x: &f32) -> f32{
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_palindrome`
[INFO] [stdout]  --> src/lists_strings/strings.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn is_palindrome(phrase: &str) -> bool{
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_whitespace`
[INFO] [stdout]   --> src/lists_strings/strings.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn remove_whitespace(s: &mut String){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `square`
[INFO] [stdout]   --> src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn square(x: &f32) -> f32{
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quadratic`
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn quadratic(x: &f32) -> f32{
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "b694e091bb65e6020e5a2092ccf4e989fea73c980ef6b23c04ec88da67484ee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b694e091bb65e6020e5a2092ccf4e989fea73c980ef6b23c04ec88da67484ee5", kill_on_drop: false }`
[INFO] [stdout] b694e091bb65e6020e5a2092ccf4e989fea73c980ef6b23c04ec88da67484ee5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", 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] 1dad453405416acce8c556527543d33bd887a578ffa95c8f907e94ff492d7cab
[INFO] running `Command { std: "docker" "start" "-a" "1dad453405416acce8c556527543d33bd887a578ffa95c8f907e94ff492d7cab", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `hello_world`
[INFO] [stderr]  --> src/elementary/hello_world.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn hello_world(){
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `personal_greeting`
[INFO] [stderr]  --> src/elementary/hello_world.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn personal_greeting(){
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `discriminitory_greeting`
[INFO] [stderr]   --> src/elementary/hello_world.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn discriminitory_greeting(){
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sequence_addition`
[INFO] [stderr]  --> src/elementary/maths.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn sequence_addition(max_num: i32) -> i32 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sequence_product`
[INFO] [stderr]   --> src/elementary/maths.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn sequence_product(max_num: i32) -> i32{
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `odds_and_fives`
[INFO] [stderr]   --> src/elementary/maths.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub fn odds_and_fives(max_num: i32) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_or_product`
[INFO] [stderr]   --> src/elementary/maths.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub fn sum_or_product() -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `multiplication_table`
[INFO] [stderr]   --> src/elementary/maths.rs:89:8
[INFO] [stderr]    |
[INFO] [stderr] 89 | pub fn multiplication_table(max_num: u32){
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_primes`
[INFO] [stderr]    --> src/elementary/maths.rs:108:8
[INFO] [stderr]     |
[INFO] [stderr] 108 | pub fn print_primes(max_num: i128){
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]    --> src/elementary/maths.rs:126:4
[INFO] [stderr]     |
[INFO] [stderr] 126 | fn is_prime(val: i128) -> bool{
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_leap_years`
[INFO] [stderr]    --> src/elementary/maths.rs:147:8
[INFO] [stderr]     |
[INFO] [stderr] 147 | pub fn print_leap_years(){
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `guessing_game`
[INFO] [stderr]    --> src/elementary/maths.rs:173:8
[INFO] [stderr]     |
[INFO] [stderr] 173 | pub fn guessing_game(){
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alternating_series`
[INFO] [stderr]    --> src/elementary/maths.rs:206:8
[INFO] [stderr]     |
[INFO] [stderr] 206 | pub fn alternating_series(max_k: u32){
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest_elem`
[INFO] [stderr]  --> src/lists_strings/lists.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn largest_elem(full_list: Vec<i32>)->i32{
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reverse_list`
[INFO] [stderr]   --> src/lists_strings/lists.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn reverse_list<T: Copy>(list: &mut Vec<T>){
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `occur_in_list`
[INFO] [stderr]   --> src/lists_strings/lists.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn occur_in_list<T: PartialEq>(value: &T ,list: &Vec<T>) -> bool{
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `return_odds`
[INFO] [stderr]   --> src/lists_strings/lists.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn return_odds<T>(list: &[T]) -> Vec<&T>{
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vec_sum`
[INFO] [stderr]   --> src/lists_strings/lists.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | pub fn vec_sum(list: &Vec<f32>) -> f32{
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vec_sum_recursive`
[INFO] [stderr]   --> src/lists_strings/lists.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 | pub fn vec_sum_recursive<T: Add<Output = T> + Copy + Default>(list: &[T]) -> T{
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_all`
[INFO] [stderr]   --> src/lists_strings/lists.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn to_all<T>(f: fn(x: &T)->T, list: &Vec<T>) -> Vec<T>{
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `square`
[INFO] [stderr]    --> src/lists_strings/lists.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn square(x: &f32) -> f32{
[INFO] [stderr]     |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quadratic`
[INFO] [stderr]    --> src/lists_strings/lists.rs:105:4
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn quadratic(x: &f32) -> f32{
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_palindrome`
[INFO] [stderr]  --> src/lists_strings/strings.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn is_palindrome(phrase: &str) -> bool{
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `remove_whitespace`
[INFO] [stderr]   --> src/lists_strings/strings.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn remove_whitespace(s: &mut String){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `square`
[INFO] [stderr]   --> src/main.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn square(x: &f32) -> f32{
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quadratic`
[INFO] [stderr]   --> src/main.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn quadratic(x: &f32) -> f32{
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `study-session` (bin "study-session" test) generated 26 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/study_session-8c08c7853f832f41)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1dad453405416acce8c556527543d33bd887a578ffa95c8f907e94ff492d7cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dad453405416acce8c556527543d33bd887a578ffa95c8f907e94ff492d7cab", kill_on_drop: false }`
[INFO] [stdout] 1dad453405416acce8c556527543d33bd887a578ffa95c8f907e94ff492d7cab