[INFO] crate bag 0.1.2 is already in cache
[INFO] extracting crate bag 0.1.2 into work/ex/clippy-test-run/sources/stable/reg/bag/0.1.2
[INFO] extracting crate bag 0.1.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/bag/0.1.2
[INFO] validating manifest of bag-0.1.2 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 bag-0.1.2 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 bag-0.1.2
[INFO] finished frobbing bag-0.1.2
[INFO] frobbed toml for bag-0.1.2 written to work/ex/clippy-test-run/sources/stable/reg/bag/0.1.2/Cargo.toml
[INFO] started frobbing bag-0.1.2
[INFO] finished frobbing bag-0.1.2
[INFO] frobbed toml for bag-0.1.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/bag/0.1.2/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 bag-0.1.2 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/reg/bag/0.1.2:/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] 6cd5acfe80130d5e880bfba6b181c18bfe0e1fbd67de1cce58286170ac4d7cb6
[INFO] running `"docker" "start" "-a" "6cd5acfe80130d5e880bfba6b181c18bfe0e1fbd67de1cce58286170ac4d7cb6"`
[INFO] [stderr]     Checking bag v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:122:29
[INFO] [stderr]     |
[INFO] [stderr] 122 |                     None => return None
[INFO] [stderr]     |                             ^^^^^^^^^^^ help: remove `return` as shown: `None`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:143:47
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn insert_child(&mut self, parent_id: &NodeID, mut inserted: Node<T>) -> Result<NodeID, &'static str> {
[INFO] [stderr]     |                                               ^^^^^^^ help: consider passing by value instead: `NodeID`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:122:29
[INFO] [stderr]     |
[INFO] [stderr] 122 |                     None => return None
[INFO] [stderr]     |                             ^^^^^^^^^^^ help: remove `return` as shown: `None`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:143:47
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn insert_child(&mut self, parent_id: &NodeID, mut inserted: Node<T>) -> Result<NodeID, &'static str> {
[INFO] [stderr]     |                                               ^^^^^^^ help: consider passing by value instead: `NodeID`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "6cd5acfe80130d5e880bfba6b181c18bfe0e1fbd67de1cce58286170ac4d7cb6"`
[INFO] running `"docker" "rm" "-f" "6cd5acfe80130d5e880bfba6b181c18bfe0e1fbd67de1cce58286170ac4d7cb6"`
[INFO] [stdout] 6cd5acfe80130d5e880bfba6b181c18bfe0e1fbd67de1cce58286170ac4d7cb6