[INFO] updating cached repository fgaray/project-euler-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fgaray/project-euler-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fgaray/project-euler-rust" "work/ex/clippy-test-run/sources/stable/gh/fgaray/project-euler-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/fgaray/project-euler-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fgaray/project-euler-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/fgaray/project-euler-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/fgaray/project-euler-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d61b820d5bdb1b22269fa9c173c836d3cca64bc5
[INFO] sha for GitHub repo fgaray/project-euler-rust: d61b820d5bdb1b22269fa9c173c836d3cca64bc5
[INFO] validating manifest of fgaray/project-euler-rust on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of fgaray/project-euler-rust on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing fgaray/project-euler-rust
[INFO] finished frobbing fgaray/project-euler-rust
[INFO] frobbed toml for fgaray/project-euler-rust written to work/ex/clippy-test-run/sources/stable/gh/fgaray/project-euler-rust/Cargo.toml
[INFO] started frobbing fgaray/project-euler-rust
[INFO] finished frobbing fgaray/project-euler-rust
[INFO] frobbed toml for fgaray/project-euler-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/fgaray/project-euler-rust/Cargo.toml
[INFO] crate fgaray/project-euler-rust has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting fgaray/project-euler-rust against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/fgaray/project-euler-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dclippy::into_iter_on_array" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 173c6375b0138c0e576c0e4b433e005f04eaaf6a546062e8d54f03cf7ae306a4
[INFO] running `"docker" "start" "-a" "173c6375b0138c0e576c0e4b433e005f04eaaf6a546062e8d54f03cf7ae306a4"`
[INFO] [stderr]     Checking euler v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/problem3/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std;
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/problem7/mod.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     return 0;
[INFO] [stderr]    |     ^^^^^^^^^ help: remove `return` as shown: `0`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/problem9/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     return 0
[INFO] [stderr]    |     ^^^^^^^^ help: remove `return` as shown: `0`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]  --> src/problem9/mod.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for b in (1..1000) {
[INFO] [stderr]   |              ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]  --> src/problem9/mod.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 |         for c in (1..1000) {
[INFO] [stderr]   |                  ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/problem10/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/main.rs:28:47
[INFO] [stderr]    |
[INFO] [stderr] 28 |     println!("Solution: {}", problem10::solve(2000000));
[INFO] [stderr]    |                                               ^^^^^^^ help: consider: `2_000_000`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/problem3/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std;
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/problem7/mod.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     return 0;
[INFO] [stderr]    |     ^^^^^^^^^ help: remove `return` as shown: `0`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/problem9/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     return 0
[INFO] [stderr]    |     ^^^^^^^^ help: remove `return` as shown: `0`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]  --> src/problem9/mod.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for b in (1..1000) {
[INFO] [stderr]   |              ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]  --> src/problem9/mod.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 |         for c in (1..1000) {
[INFO] [stderr]   |                  ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/problem10/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/main.rs:28:47
[INFO] [stderr]    |
[INFO] [stderr] 28 |     println!("Solution: {}", problem10::solve(2000000));
[INFO] [stderr]    |                                               ^^^^^^^ help: consider: `2_000_000`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d1`
[INFO] [stderr]  --> src/problem4/mod.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut d1 = 1;
[INFO] [stderr]   |             ^^ help: consider using `_d1` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d2`
[INFO] [stderr]  --> src/problem4/mod.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut d2 = 1;
[INFO] [stderr]   |             ^^ help: consider using `_d2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/problem3/mod.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |    let mut v = prime.get_mem();
[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/problem4/mod.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut d1 = 1;
[INFO] [stderr]   |         ----^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/problem4/mod.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut d2 = 1;
[INFO] [stderr]   |         ----^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/utils/prime.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let mut v = Vec::new();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/utils/prime.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let mut v = Vec::with_capacity(capacity);
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem3/mod.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn solve(n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem4/mod.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn solve() -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem5/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn solve(n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem6/mod.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve(upper: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem7/mod.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn solve(n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem9/mod.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn solve(constant: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mem`
[INFO] [stderr]   --> src/utils/prime.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn get_mem(&mut self) -> &Vec<i64> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reverse`
[INFO] [stderr]   --> src/utils/number.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn reverse(n: i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]  --> src/problem6/mod.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let sum_square: i64 = (1..(upper + 1)).map(|x| x*x).sum();
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^ help: use: `(1..=upper)`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]  --> src/problem6/mod.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let sum: i64 = (1..(upper + 1)).sum();
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^ help: use: `(1..=upper)`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/utils/fibonacci.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         y = x + y;
[INFO] [stderr]    |         ^^^^^^^^^ help: replace it with: `y += x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `is_*` usually take self by reference or no self; consider choosing a less ambiguous name
[INFO] [stderr]   --> src/utils/prime.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn is_prime(&mut self, n: i64) -> bool {
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/utils/prime.rs:42:16
[INFO] [stderr]    |
[INFO] [stderr] 42 |             if x > &s {
[INFO] [stderr]    |                ^^^^--
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    help: use the right value directly: `s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/utils/number.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         number = number / 10;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `number /= 10`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d1`
[INFO] [stderr]  --> src/problem4/mod.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut d1 = 1;
[INFO] [stderr]   |             ^^ help: consider using `_d1` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d2`
[INFO] [stderr]  --> src/problem4/mod.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut d2 = 1;
[INFO] [stderr]   |             ^^ help: consider using `_d2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/problem3/mod.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |    let mut v = prime.get_mem();
[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/problem4/mod.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut d1 = 1;
[INFO] [stderr]   |         ----^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/problem4/mod.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut d2 = 1;
[INFO] [stderr]   |         ----^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/utils/prime.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let mut v = Vec::new();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/utils/prime.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let mut v = Vec::with_capacity(capacity);
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem3/mod.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn solve(n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem4/mod.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn solve() -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem5/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn solve(n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem6/mod.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve(upper: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem7/mod.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn solve(n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/problem9/mod.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn solve(constant: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mem`
[INFO] [stderr]   --> src/utils/prime.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn get_mem(&mut self) -> &Vec<i64> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reverse`
[INFO] [stderr]   --> src/utils/number.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn reverse(n: i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]  --> src/problem6/mod.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let sum_square: i64 = (1..(upper + 1)).map(|x| x*x).sum();
[INFO] [stderr]   |                           ^^^^^^^^^^^^^^^^ help: use: `(1..=upper)`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]  --> src/problem6/mod.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let sum: i64 = (1..(upper + 1)).sum();
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^ help: use: `(1..=upper)`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/utils/fibonacci.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         y = x + y;
[INFO] [stderr]    |         ^^^^^^^^^ help: replace it with: `y += x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `is_*` usually take self by reference or no self; consider choosing a less ambiguous name
[INFO] [stderr]   --> src/utils/prime.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn is_prime(&mut self, n: i64) -> bool {
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/utils/prime.rs:42:16
[INFO] [stderr]    |
[INFO] [stderr] 42 |             if x > &s {
[INFO] [stderr]    |                ^^^^--
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    help: use the right value directly: `s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/utils/number.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         number = number / 10;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `number /= 10`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "173c6375b0138c0e576c0e4b433e005f04eaaf6a546062e8d54f03cf7ae306a4"`
[INFO] running `"docker" "rm" "-f" "173c6375b0138c0e576c0e4b433e005f04eaaf6a546062e8d54f03cf7ae306a4"`
[INFO] [stdout] 173c6375b0138c0e576c0e4b433e005f04eaaf6a546062e8d54f03cf7ae306a4