[INFO] updating cached repository rob-brown/AdventOfCode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rob-brown/AdventOfCode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rob-brown/AdventOfCode2018" "work/ex/clippy-test-run/sources/stable/gh/rob-brown/AdventOfCode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/rob-brown/AdventOfCode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rob-brown/AdventOfCode2018" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/rob-brown/AdventOfCode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/rob-brown/AdventOfCode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1cb95e4ba05d3e291e5e5f5303f2ae17531500eb
[INFO] sha for GitHub repo rob-brown/AdventOfCode2018: 1cb95e4ba05d3e291e5e5f5303f2ae17531500eb
[INFO] validating manifest of rob-brown/AdventOfCode2018 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 rob-brown/AdventOfCode2018 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 rob-brown/AdventOfCode2018
[INFO] finished frobbing rob-brown/AdventOfCode2018
[INFO] frobbed toml for rob-brown/AdventOfCode2018 written to work/ex/clippy-test-run/sources/stable/gh/rob-brown/AdventOfCode2018/Cargo.toml
[INFO] started frobbing rob-brown/AdventOfCode2018
[INFO] finished frobbing rob-brown/AdventOfCode2018
[INFO] frobbed toml for rob-brown/AdventOfCode2018 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/rob-brown/AdventOfCode2018/Cargo.toml
[INFO] crate rob-brown/AdventOfCode2018 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 rob-brown/AdventOfCode2018 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/rob-brown/AdventOfCode2018:/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" "-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] 41ab5739446f70a96a16ba3ac70a899a5257db1aa24b77064491f7cfa8e71c04
[INFO] running `"docker" "start" "-a" "41ab5739446f70a96a16ba3ac70a899a5257db1aa24b77064491f7cfa8e71c04"`
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]     --> src/main.rs:1117:39
[INFO] [stderr]      |
[INFO] [stderr] 1117 |             println!("Day 10:A = {}", "AHZLLCAL");
[INFO] [stderr]      |                                       ^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]     --> src/main.rs:1243:13
[INFO] [stderr]      |
[INFO] [stderr] 1243 |         let e = &capture[5] == "#";
[INFO] [stderr]      |             ^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]     --> src/main.rs:1244:13
[INFO] [stderr]      |
[INFO] [stderr] 1244 |         let f = &capture[6] == "#";
[INFO] [stderr]      |             ^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]     --> src/main.rs:1117:39
[INFO] [stderr]      |
[INFO] [stderr] 1117 |             println!("Day 10:A = {}", "AHZLLCAL");
[INFO] [stderr]      |                                       ^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]     --> src/main.rs:1243:13
[INFO] [stderr]      |
[INFO] [stderr] 1243 |         let e = &capture[5] == "#";
[INFO] [stderr]      |             ^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]     --> src/main.rs:1244:13
[INFO] [stderr]      |
[INFO] [stderr] 1244 |         let f = &capture[6] == "#";
[INFO] [stderr]      |             ^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]     --> src/main.rs:1080:5
[INFO] [stderr]      |
[INFO] [stderr] 1080 |     return true
[INFO] [stderr]      |     ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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: long literal lacking separators
[INFO] [stderr]     --> src/main.rs:1302:17
[INFO] [stderr]      |
[INFO] [stderr] 1302 |     let input = 540561;
[INFO] [stderr]      |                 ^^^^^^ help: consider: `540_561`
[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: unneeded return statement
[INFO] [stderr]     --> src/main.rs:1080:5
[INFO] [stderr]      |
[INFO] [stderr] 1080 |     return true
[INFO] [stderr]      |     ^^^^^^^^^^^ help: remove `return` as shown: `true`
[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: long literal lacking separators
[INFO] [stderr]     --> src/main.rs:1302:17
[INFO] [stderr]      |
[INFO] [stderr] 1302 |     let input = 540561;
[INFO] [stderr]      |                 ^^^^^^ help: consider: `540_561`
[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: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/main.rs:848:35
[INFO] [stderr]     |
[INFO] [stderr] 848 |         let list = rules.entry(x).or_insert(Vec::new());
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(Vec::new)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/main.rs:856:15
[INFO] [stderr]     |
[INFO] [stderr] 856 |         while remaining_rules.is_empty() == false {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!remaining_rules.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/main.rs:896:15
[INFO] [stderr]     |
[INFO] [stderr] 896 |         while remaining_rules.is_empty() == false || jobs.is_empty() == false {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!remaining_rules.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/main.rs:896:54
[INFO] [stderr]     |
[INFO] [stderr] 896 |         while remaining_rules.is_empty() == false || jobs.is_empty() == false {
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!jobs.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/main.rs:926:36
[INFO] [stderr]     |
[INFO] [stderr] 926 |                     let run_time = run_times.get(&letter).unwrap();
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&run_times[&letter]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:999:36
[INFO] [stderr]     |
[INFO] [stderr] 999 |     let mut words = contents.split(" ");
[INFO] [stderr]     |                                    ^^^ help: try using a char instead: `' '`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]     --> src/main.rs:1005:36
[INFO] [stderr]      |
[INFO] [stderr] 1005 |     let mut words = contents.split(" ");
[INFO] [stderr]      |                                    ^^^ help: try using a char instead: `' '`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's keys
[INFO] [stderr]     --> src/main.rs:1054:24
[INFO] [stderr]      |
[INFO] [stderr] 1054 |     for ((x, y), _) in points {
[INFO] [stderr]      |                        ^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::for_kv_map)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]      |
[INFO] [stderr] 1054 |     for (x, y) in points.keys() {
[INFO] [stderr]      |         ^^^^^^    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]     --> src/main.rs:1069:20
[INFO] [stderr]      |
[INFO] [stderr] 1069 |               if let Some(_) = points.get(&(x, y)) {
[INFO] [stderr]      |  _____________-      ^^^^^^^
[INFO] [stderr] 1070 | |                 line += "#";
[INFO] [stderr] 1071 | |             }
[INFO] [stderr] 1072 | |             else {
[INFO] [stderr] 1073 | |                 line += " ";
[INFO] [stderr] 1074 | |             }
[INFO] [stderr]      | |_____________- help: try this: `if points.get(&(x, y)).is_some()`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]     --> src/main.rs:1294:57
[INFO] [stderr]      |
[INFO] [stderr] 1294 |     let total = (50_000_000_000_i64 - iterations + 1) * (last_diff as i64) + (sum as i64);
[INFO] [stderr]      |                                                         ^^^^^^^^^^^^^^^^^^ help: try: `i64::from(last_diff)`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]     --> src/main.rs:1294:78
[INFO] [stderr]      |
[INFO] [stderr] 1294 |     let total = (50_000_000_000_i64 - iterations + 1) * (last_diff as i64) + (sum as i64);
[INFO] [stderr]      |                                                                              ^^^^^^^^^^^^ help: try: `i64::from(sum)`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/main.rs:848:35
[INFO] [stderr]     |
[INFO] [stderr] 848 |         let list = rules.entry(x).or_insert(Vec::new());
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(Vec::new)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/main.rs:856:15
[INFO] [stderr]     |
[INFO] [stderr] 856 |         while remaining_rules.is_empty() == false {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!remaining_rules.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/main.rs:896:15
[INFO] [stderr]     |
[INFO] [stderr] 896 |         while remaining_rules.is_empty() == false || jobs.is_empty() == false {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!remaining_rules.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/main.rs:896:54
[INFO] [stderr]     |
[INFO] [stderr] 896 |         while remaining_rules.is_empty() == false || jobs.is_empty() == false {
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!jobs.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/main.rs:926:36
[INFO] [stderr]     |
[INFO] [stderr] 926 |                     let run_time = run_times.get(&letter).unwrap();
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&run_times[&letter]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:999:36
[INFO] [stderr]     |
[INFO] [stderr] 999 |     let mut words = contents.split(" ");
[INFO] [stderr]     |                                    ^^^ help: try using a char instead: `' '`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]     --> src/main.rs:1005:36
[INFO] [stderr]      |
[INFO] [stderr] 1005 |     let mut words = contents.split(" ");
[INFO] [stderr]      |                                    ^^^ help: try using a char instead: `' '`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's keys
[INFO] [stderr]     --> src/main.rs:1054:24
[INFO] [stderr]      |
[INFO] [stderr] 1054 |     for ((x, y), _) in points {
[INFO] [stderr]      |                        ^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::for_kv_map)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]      |
[INFO] [stderr] 1054 |     for (x, y) in points.keys() {
[INFO] [stderr]      |         ^^^^^^    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]     --> src/main.rs:1069:20
[INFO] [stderr]      |
[INFO] [stderr] 1069 |               if let Some(_) = points.get(&(x, y)) {
[INFO] [stderr]      |  _____________-      ^^^^^^^
[INFO] [stderr] 1070 | |                 line += "#";
[INFO] [stderr] 1071 | |             }
[INFO] [stderr] 1072 | |             else {
[INFO] [stderr] 1073 | |                 line += " ";
[INFO] [stderr] 1074 | |             }
[INFO] [stderr]      | |_____________- help: try this: `if points.get(&(x, y)).is_some()`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]     --> src/main.rs:1294:57
[INFO] [stderr]      |
[INFO] [stderr] 1294 |     let total = (50_000_000_000_i64 - iterations + 1) * (last_diff as i64) + (sum as i64);
[INFO] [stderr]      |                                                         ^^^^^^^^^^^^^^^^^^ help: try: `i64::from(last_diff)`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]     --> src/main.rs:1294:78
[INFO] [stderr]      |
[INFO] [stderr] 1294 |     let total = (50_000_000_000_i64 - iterations + 1) * (last_diff as i64) + (sum as i64);
[INFO] [stderr]      |                                                                              ^^^^^^^^^^^^ help: try: `i64::from(sum)`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `"docker" "inspect" "41ab5739446f70a96a16ba3ac70a899a5257db1aa24b77064491f7cfa8e71c04"`
[INFO] running `"docker" "rm" "-f" "41ab5739446f70a96a16ba3ac70a899a5257db1aa24b77064491f7cfa8e71c04"`
[INFO] [stdout] 41ab5739446f70a96a16ba3ac70a899a5257db1aa24b77064491f7cfa8e71c04