[INFO] crate cpp_to_rust_common 0.2.3 is already in cache
[INFO] extracting crate cpp_to_rust_common 0.2.3 into work/ex/clippy-test-run/sources/stable/reg/cpp_to_rust_common/0.2.3
[INFO] extracting crate cpp_to_rust_common 0.2.3 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/cpp_to_rust_common/0.2.3
[INFO] validating manifest of cpp_to_rust_common-0.2.3 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 cpp_to_rust_common-0.2.3 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 cpp_to_rust_common-0.2.3
[INFO] finished frobbing cpp_to_rust_common-0.2.3
[INFO] frobbed toml for cpp_to_rust_common-0.2.3 written to work/ex/clippy-test-run/sources/stable/reg/cpp_to_rust_common/0.2.3/Cargo.toml
[INFO] started frobbing cpp_to_rust_common-0.2.3
[INFO] finished frobbing cpp_to_rust_common-0.2.3
[INFO] frobbed toml for cpp_to_rust_common-0.2.3 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/cpp_to_rust_common/0.2.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 cpp_to_rust_common-0.2.3 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/cpp_to_rust_common/0.2.3:/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] 7e9a6bb8dafd36342dee919d716d084a37622af65e4f7b75ee6724571b0d0f33
[INFO] running `"docker" "start" "-a" "7e9a6bb8dafd36342dee919d716d084a37622af65e4f7b75ee6724571b0d0f33"`
[INFO] [stderr]     Checking bincode v0.7.0
[INFO] [stderr]     Checking cpp_to_rust_common v0.2.3 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/string_utils.rs:40:7
[INFO] [stderr]    |
[INFO] [stderr] 40 |       string: string,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/cpp_build_config.rs:143:15
[INFO] [stderr]     |
[INFO] [stderr] 143 |               condition: condition,
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `condition`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/cpp_build_config.rs:144:15
[INFO] [stderr]     |
[INFO] [stderr] 144 |               data: data,
[INFO] [stderr]     |               ^^^^^^^^^^ help: replace it with: `data`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/string_utils.rs:40:7
[INFO] [stderr]    |
[INFO] [stderr] 40 |       string: string,
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: replace it with: `string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/cpp_build_config.rs:143:15
[INFO] [stderr]     |
[INFO] [stderr] 143 |               condition: condition,
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `condition`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/cpp_build_config.rs:144:15
[INFO] [stderr]     |
[INFO] [stderr] 144 |               data: data,
[INFO] [stderr]     |               ^^^^^^^^^^ help: replace it with: `data`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/utils.rs:23:3
[INFO] [stderr]    |
[INFO] [stderr] 23 |   return "";
[INFO] [stderr]    |   ^^^^^^^^^^ help: remove `return` as shown: `""`
[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/utils.rs:23:3
[INFO] [stderr]    |
[INFO] [stderr] 23 |   return "";
[INFO] [stderr]    |   ^^^^^^^^^^ help: remove `return` as shown: `""`
[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] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/log.rs:113:7
[INFO] [stderr]     |
[INFO] [stderr] 113 | /       std::io::stderr()
[INFO] [stderr] 114 | |         .write(text.borrow().as_bytes())
[INFO] [stderr] 115 | |         .unwrap();
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/log.rs:116:7
[INFO] [stderr]     |
[INFO] [stderr] 116 |       std::io::stderr().write(b"\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]    --> src/log.rs:119:7
[INFO] [stderr]     |
[INFO] [stderr] 119 | /       if !self.files.contains_key(&category) {
[INFO] [stderr] 120 | |         let file =
[INFO] [stderr] 121 | |           OpenOptions::new()
[INFO] [stderr] 122 | |             .write(true)
[INFO] [stderr] ...   |
[INFO] [stderr] 127 | |         self.files.insert(category, file);
[INFO] [stderr] 128 | |       }
[INFO] [stderr]     | |_______^ help: consider using: `self.files.entry(category)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/log.rs:130:7
[INFO] [stderr]     |
[INFO] [stderr] 130 |       file.write(text.borrow().as_bytes()).unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/log.rs:131:7
[INFO] [stderr]     |
[INFO] [stderr] 131 |       file.write(b"\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/errors.rs:8:1
[INFO] [stderr]    |
[INFO] [stderr] 8  | / error_chain! {
[INFO] [stderr] 9  | |   foreign_links {
[INFO] [stderr] 10 | |     std::io::Error, IO;
[INFO] [stderr] 11 | |     ::regex::Error, Regex;
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |   }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/string_utils.rs:50:7
[INFO] [stderr]    |
[INFO] [stderr] 50 |   str[index..index + 1].chars().next().unwrap()
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ help: use: `index..=index`
[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/string_utils.rs:56:58
[INFO] [stderr]    |
[INFO] [stderr] 56 |     while self.index < self.string.len() && &self.string[self.index..self.index + 1] == "_" {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `self.index..=self.index`
[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: length comparison to zero
[INFO] [stderr]    --> src/string_utils.rs:104:6
[INFO] [stderr]     |
[INFO] [stderr] 104 |   if str.len() > 0 {
[INFO] [stderr]     |      ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!str.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]    --> src/string_utils.rs:128:8
[INFO] [stderr]     |
[INFO] [stderr] 128 |     if i > 0 && !(part.chars().all(|c| c.is_digit(10)) && !ends_with_digit(&str)) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(!part.chars().all(|c| c.is_digit(10)) || ends_with_digit(&str)) && i > 0`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/string_utils.rs:148:12
[INFO] [stderr]     |
[INFO] [stderr] 148 |         if &parts[i..i + needle.len()] == &needle[..] {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 148 |         if parts[i..i + needle.len()] == needle[..] {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/utils.rs:28:85
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn add_to_multihash<K: Eq + Hash + Clone, T, V: Default + Extend<T>>(hash: &mut HashMap<K, V>,
[INFO] [stderr]    |                                                                                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::implicit_hasher)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn add_to_multihash<K: Eq + Hash + Clone, T, V: Default + Extend<T>, S: ::std::hash::BuildHasher>(hash: &mut HashMap<K, V, S>,
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a call to `new`
[INFO] [stderr]    --> src/utils.rs:112:33
[INFO] [stderr]     |
[INFO] [stderr] 112 |   for path in env::split_paths(&env::var(env_var_name).unwrap_or(String::new())) {
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `env::var(env_var_name).unwrap_or_default()`
[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: identical conversion
[INFO] [stderr]    --> src/utils.rs:114:22
[INFO] [stderr]     |
[INFO] [stderr] 114 |       new_paths.push(path.into());
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: consider removing `.into()`: `path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `cpp_to_rust_common`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/log.rs:113:7
[INFO] [stderr]     |
[INFO] [stderr] 113 | /       std::io::stderr()
[INFO] [stderr] 114 | |         .write(text.borrow().as_bytes())
[INFO] [stderr] 115 | |         .unwrap();
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/log.rs:116:7
[INFO] [stderr]     |
[INFO] [stderr] 116 |       std::io::stderr().write(b"\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]    --> src/log.rs:119:7
[INFO] [stderr]     |
[INFO] [stderr] 119 | /       if !self.files.contains_key(&category) {
[INFO] [stderr] 120 | |         let file =
[INFO] [stderr] 121 | |           OpenOptions::new()
[INFO] [stderr] 122 | |             .write(true)
[INFO] [stderr] ...   |
[INFO] [stderr] 127 | |         self.files.insert(category, file);
[INFO] [stderr] 128 | |       }
[INFO] [stderr]     | |_______^ help: consider using: `self.files.entry(category)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/log.rs:130:7
[INFO] [stderr]     |
[INFO] [stderr] 130 |       file.write(text.borrow().as_bytes()).unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/log.rs:131:7
[INFO] [stderr]     |
[INFO] [stderr] 131 |       file.write(b"\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/errors.rs:8:1
[INFO] [stderr]    |
[INFO] [stderr] 8  | / error_chain! {
[INFO] [stderr] 9  | |   foreign_links {
[INFO] [stderr] 10 | |     std::io::Error, IO;
[INFO] [stderr] 11 | |     ::regex::Error, Regex;
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |   }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/string_utils.rs:50:7
[INFO] [stderr]    |
[INFO] [stderr] 50 |   str[index..index + 1].chars().next().unwrap()
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ help: use: `index..=index`
[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/string_utils.rs:56:58
[INFO] [stderr]    |
[INFO] [stderr] 56 |     while self.index < self.string.len() && &self.string[self.index..self.index + 1] == "_" {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `self.index..=self.index`
[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: length comparison to zero
[INFO] [stderr]    --> src/string_utils.rs:104:6
[INFO] [stderr]     |
[INFO] [stderr] 104 |   if str.len() > 0 {
[INFO] [stderr]     |      ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!str.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]    --> src/string_utils.rs:128:8
[INFO] [stderr]     |
[INFO] [stderr] 128 |     if i > 0 && !(part.chars().all(|c| c.is_digit(10)) && !ends_with_digit(&str)) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(!part.chars().all(|c| c.is_digit(10)) || ends_with_digit(&str)) && i > 0`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]    --> src/string_utils.rs:148:12
[INFO] [stderr]     |
[INFO] [stderr] 148 |         if &parts[i..i + needle.len()] == &needle[..] {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] help: use the values directly
[INFO] [stderr]     |
[INFO] [stderr] 148 |         if parts[i..i + needle.len()] == needle[..] {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: parameter of type `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/utils.rs:28:85
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn add_to_multihash<K: Eq + Hash + Clone, T, V: Default + Extend<T>>(hash: &mut HashMap<K, V>,
[INFO] [stderr]    |                                                                                     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::implicit_hasher)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn add_to_multihash<K: Eq + Hash + Clone, T, V: Default + Extend<T>, S: ::std::hash::BuildHasher>(hash: &mut HashMap<K, V, S>,
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a call to `new`
[INFO] [stderr]    --> src/utils.rs:112:33
[INFO] [stderr]     |
[INFO] [stderr] 112 |   for path in env::split_paths(&env::var(env_var_name).unwrap_or(String::new())) {
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `env::var(env_var_name).unwrap_or_default()`
[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: identical conversion
[INFO] [stderr]    --> src/utils.rs:114:22
[INFO] [stderr]     |
[INFO] [stderr] 114 |       new_paths.push(path.into());
[INFO] [stderr]     |                      ^^^^^^^^^^^ help: consider removing `.into()`: `path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 31
[INFO] [stderr]    --> src/tests/utils.rs:67:1
[INFO] [stderr]     |
[INFO] [stderr] 67  | / fn case_operations() {
[INFO] [stderr] 68  | |   use string_utils::CaseOperations;
[INFO] [stderr] 69  | |
[INFO] [stderr] 70  | |   let s1 = "first_second_last".to_string();
[INFO] [stderr] ...   |
[INFO] [stderr] 131 | |
[INFO] [stderr] 132 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `cpp_to_rust_common`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7e9a6bb8dafd36342dee919d716d084a37622af65e4f7b75ee6724571b0d0f33"`
[INFO] running `"docker" "rm" "-f" "7e9a6bb8dafd36342dee919d716d084a37622af65e4f7b75ee6724571b0d0f33"`
[INFO] [stdout] 7e9a6bb8dafd36342dee919d716d084a37622af65e4f7b75ee6724571b0d0f33