[INFO] updating cached repository PlasmaPower/nano-bip32
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PlasmaPower/nano-bip32
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PlasmaPower/nano-bip32" "work/ex/clippy-test-run/sources/stable/gh/PlasmaPower/nano-bip32"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/PlasmaPower/nano-bip32'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PlasmaPower/nano-bip32" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/PlasmaPower/nano-bip32"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/PlasmaPower/nano-bip32'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e56bd3d722a9f5a01d1daad434a946591d9bc2f0
[INFO] sha for GitHub repo PlasmaPower/nano-bip32: e56bd3d722a9f5a01d1daad434a946591d9bc2f0
[INFO] validating manifest of PlasmaPower/nano-bip32 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 PlasmaPower/nano-bip32 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 PlasmaPower/nano-bip32
[INFO] finished frobbing PlasmaPower/nano-bip32
[INFO] frobbed toml for PlasmaPower/nano-bip32 written to work/ex/clippy-test-run/sources/stable/gh/PlasmaPower/nano-bip32/Cargo.toml
[INFO] started frobbing PlasmaPower/nano-bip32
[INFO] finished frobbing PlasmaPower/nano-bip32
[INFO] frobbed toml for PlasmaPower/nano-bip32 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/PlasmaPower/nano-bip32/Cargo.toml
[INFO] crate PlasmaPower/nano-bip32 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 PlasmaPower/nano-bip32 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/PlasmaPower/nano-bip32:/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] 38eca8280ba768212c5cac46a69cd38524aabd5a40c4eb52ed97fb85a9c86281
[INFO] running `"docker" "start" "-a" "38eca8280ba768212c5cac46a69cd38524aabd5a40c4eb52ed97fb85a9c86281"`
[INFO] [stderr]    Compiling rand_core v0.2.0
[INFO] [stderr]    Compiling subtle v0.6.2
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]     Checking rand v0.5.0
[INFO] [stderr]    Compiling digest v0.7.2
[INFO] [stderr]     Checking crypto-mac v0.6.0
[INFO] [stderr]     Checking hmac v0.6.2
[INFO] [stderr]    Compiling curve25519-dalek v0.17.0
[INFO] [stderr]     Checking nano-bip32 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/lib.rs:59:20
[INFO] [stderr]    |
[INFO] [stderr] 59 |         self.key = &bytes_to_scalar(&result.as_slice()[..32]) + &self.key;
[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] 59 |         self.key = bytes_to_scalar(&result.as_slice()[..32]) + self.key;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:66:25
[INFO] [stderr]    |
[INFO] [stderr] 66 |             chain_code: self.chain_code.clone(),
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `self.chain_code`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this block may be rewritten with the `?` operator
[INFO] [stderr]   --> src/lib.rs:86:9
[INFO] [stderr]    |
[INFO] [stderr] 86 | /         if key.decompress().is_none() {
[INFO] [stderr] 87 | |             return None;
[INFO] [stderr] 88 | |         }
[INFO] [stderr]    | |_________^ help: replace_it_with: `key.decompress()?;`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::question_mark)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:97:20
[INFO] [stderr]    |
[INFO] [stderr] 97 |         self.key = ((&bytes_to_scalar(&result.as_slice()[..32]) * &ED25519_BASEPOINT_TABLE) + &self.key.decompress().unwrap()).compress();
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-------------------------------^
[INFO] [stderr]    |                                                                                               |
[INFO] [stderr]    |                                                                                               help: use the right value directly: `self.key.decompress().unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/lib.rs:59:20
[INFO] [stderr]    |
[INFO] [stderr] 59 |         self.key = &bytes_to_scalar(&result.as_slice()[..32]) + &self.key;
[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] 59 |         self.key = bytes_to_scalar(&result.as_slice()[..32]) + self.key;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:66:25
[INFO] [stderr]    |
[INFO] [stderr] 66 |             chain_code: self.chain_code.clone(),
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `self.chain_code`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this block may be rewritten with the `?` operator
[INFO] [stderr]   --> src/lib.rs:86:9
[INFO] [stderr]    |
[INFO] [stderr] 86 | /         if key.decompress().is_none() {
[INFO] [stderr] 87 | |             return None;
[INFO] [stderr] 88 | |         }
[INFO] [stderr]    | |_________^ help: replace_it_with: `key.decompress()?;`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::question_mark)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:97:20
[INFO] [stderr]    |
[INFO] [stderr] 97 |         self.key = ((&bytes_to_scalar(&result.as_slice()[..32]) * &ED25519_BASEPOINT_TABLE) + &self.key.decompress().unwrap()).compress();
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-------------------------------^
[INFO] [stderr]    |                                                                                               |
[INFO] [stderr]    |                                                                                               help: use the right value directly: `self.key.decompress().unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.36s
[INFO] running `"docker" "inspect" "38eca8280ba768212c5cac46a69cd38524aabd5a40c4eb52ed97fb85a9c86281"`
[INFO] running `"docker" "rm" "-f" "38eca8280ba768212c5cac46a69cd38524aabd5a40c4eb52ed97fb85a9c86281"`
[INFO] [stdout] 38eca8280ba768212c5cac46a69cd38524aabd5a40c4eb52ed97fb85a9c86281