[INFO] updating cached repository RCasatta/integer-compression
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/RCasatta/integer-compression
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/RCasatta/integer-compression" "work/ex/clippy-test-run/sources/stable/gh/RCasatta/integer-compression"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/RCasatta/integer-compression'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RCasatta/integer-compression" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RCasatta/integer-compression"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RCasatta/integer-compression'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ef37ff31167fa2e80379319c5dcf9e26b7b5d235
[INFO] sha for GitHub repo RCasatta/integer-compression: ef37ff31167fa2e80379319c5dcf9e26b7b5d235
[INFO] validating manifest of RCasatta/integer-compression 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 RCasatta/integer-compression 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 RCasatta/integer-compression
[INFO] finished frobbing RCasatta/integer-compression
[INFO] frobbed toml for RCasatta/integer-compression written to work/ex/clippy-test-run/sources/stable/gh/RCasatta/integer-compression/Cargo.toml
[INFO] started frobbing RCasatta/integer-compression
[INFO] finished frobbing RCasatta/integer-compression
[INFO] frobbed toml for RCasatta/integer-compression written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/RCasatta/integer-compression/Cargo.toml
[INFO] crate RCasatta/integer-compression 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 RCasatta/integer-compression against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/RCasatta/integer-compression:/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] 91e01250ef83a3c36646af990c6a2ac4bfab8cdb443c70ea56c23bd940b2d167
[INFO] running `"docker" "start" "-a" "91e01250ef83a3c36646af990c6a2ac4bfab8cdb443c70ea56c23bd940b2d167"`
[INFO] [stderr]     Checking integer-compression v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]   --> examples/utxo.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut buffer = String::new();
[INFO] [stderr]    |             ^^^^^^ help: consider using `_buffer` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/utxo.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut buffer = String::new();
[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: single-character string constant used as pattern
[INFO] [stderr]   --> examples/utxo.rs:24:57
[INFO] [stderr]    |
[INFO] [stderr] 24 |                 let splitted : Vec<&str> = buffer.split(" ").collect();
[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: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:43:20
[INFO] [stderr]    |
[INFO] [stderr] 43 |             acc += self.0[4-i] as u64 * 256u64.pow(i as u32);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: try: `u64::from(self.0[4-i])`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/main.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |             total = total + delta as u64;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `total += delta as u64`
[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: the loop variable `i` is used to index `counters`
[INFO] [stderr]   --> src/main.rs:98:18
[INFO] [stderr]    |
[INFO] [stderr] 98 |         for i in 0..5 {
[INFO] [stderr]    |                  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 98 |         for (i, <item>) in counters.iter().enumerate() {
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:102:23
[INFO] [stderr]     |
[INFO] [stderr] 102 |         let mb_size = size as f64 / 2f64.powf(20f64);
[INFO] [stderr]     |                       ^^^^^^^^^^^ help: try: `f64::from(size)`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |             total = total + delta as u64;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `total += delta as u64`
[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: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:140:29
[INFO] [stderr]     |
[INFO] [stderr] 140 |             total = total + delta as u64;
[INFO] [stderr]     |                             ^^^^^^^^^^^^ help: try: `u64::from(delta)`
[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: the loop variable `i` is used to index `counters`
[INFO] [stderr]    --> src/main.rs:147:18
[INFO] [stderr]     |
[INFO] [stderr] 147 |         for i in 0..5 {
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 147 |         for (i, <item>) in counters.iter().enumerate() {
[INFO] [stderr]     |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:151:23
[INFO] [stderr]     |
[INFO] [stderr] 151 |         let mb_size = size as f64 / 2f64.powf(20f64);
[INFO] [stderr]     |                       ^^^^^^^^^^^ help: try: `f64::from(size)`
[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: function `init_U40_random_vec` should have a snake case name such as `init_u40_random_vec`
[INFO] [stderr]    --> src/main.rs:171:1
[INFO] [stderr]     |
[INFO] [stderr] 171 | / fn init_U40_random_vec(n : usize) -> Vec<U40>{
[INFO] [stderr] 172 | |     let mut rng = rand::thread_rng();
[INFO] [stderr] 173 | |     let mut vec = Vec::new();
[INFO] [stderr] 174 | |     for _i in 0..n {
[INFO] [stderr] ...   |
[INFO] [stderr] 177 | |     vec
[INFO] [stderr] 178 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:43:20
[INFO] [stderr]    |
[INFO] [stderr] 43 |             acc += self.0[4-i] as u64 * 256u64.pow(i as u32);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: try: `u64::from(self.0[4-i])`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/main.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |             total = total + delta as u64;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `total += delta as u64`
[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: the loop variable `i` is used to index `counters`
[INFO] [stderr]   --> src/main.rs:98:18
[INFO] [stderr]    |
[INFO] [stderr] 98 |         for i in 0..5 {
[INFO] [stderr]    |                  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 98 |         for (i, <item>) in counters.iter().enumerate() {
[INFO] [stderr]    |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:102:23
[INFO] [stderr]     |
[INFO] [stderr] 102 |         let mb_size = size as f64 / 2f64.powf(20f64);
[INFO] [stderr]     |                       ^^^^^^^^^^^ help: try: `f64::from(size)`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |             total = total + delta as u64;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `total += delta as u64`
[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: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:140:29
[INFO] [stderr]     |
[INFO] [stderr] 140 |             total = total + delta as u64;
[INFO] [stderr]     |                             ^^^^^^^^^^^^ help: try: `u64::from(delta)`
[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: the loop variable `i` is used to index `counters`
[INFO] [stderr]    --> src/main.rs:147:18
[INFO] [stderr]     |
[INFO] [stderr] 147 |         for i in 0..5 {
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 147 |         for (i, <item>) in counters.iter().enumerate() {
[INFO] [stderr]     |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:151:23
[INFO] [stderr]     |
[INFO] [stderr] 151 |         let mb_size = size as f64 / 2f64.powf(20f64);
[INFO] [stderr]     |                       ^^^^^^^^^^^ help: try: `f64::from(size)`
[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: function `init_U40_random_vec` should have a snake case name such as `init_u40_random_vec`
[INFO] [stderr]    --> src/main.rs:171:1
[INFO] [stderr]     |
[INFO] [stderr] 171 | / fn init_U40_random_vec(n : usize) -> Vec<U40>{
[INFO] [stderr] 172 | |     let mut rng = rand::thread_rng();
[INFO] [stderr] 173 | |     let mut vec = Vec::new();
[INFO] [stderr] 174 | |     for _i in 0..n {
[INFO] [stderr] ...   |
[INFO] [stderr] 177 | |     vec
[INFO] [stderr] 178 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_U40` should have a snake case name such as `test_u40`
[INFO] [stderr]    --> src/main.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 | /     fn test_U40() {
[INFO] [stderr] 190 | |
[INFO] [stderr] 191 | |         assert_eq!(5, mem::size_of::<U40>());
[INFO] [stderr] 192 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 219 | |         assert_eq!(set.len(),100);
[INFO] [stderr] 220 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.92s
[INFO] running `"docker" "inspect" "91e01250ef83a3c36646af990c6a2ac4bfab8cdb443c70ea56c23bd940b2d167"`
[INFO] running `"docker" "rm" "-f" "91e01250ef83a3c36646af990c6a2ac4bfab8cdb443c70ea56c23bd940b2d167"`
[INFO] [stdout] 91e01250ef83a3c36646af990c6a2ac4bfab8cdb443c70ea56c23bd940b2d167