[INFO] updating cached repository Mestru/rust_examples
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Mestru/rust_examples
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Mestru/rust_examples" "work/ex/clippy-test-run/sources/stable/gh/Mestru/rust_examples"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Mestru/rust_examples'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Mestru/rust_examples" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Mestru/rust_examples"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Mestru/rust_examples'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 42eaf8edf145cd95383d36789464050d1ea158d2
[INFO] sha for GitHub repo Mestru/rust_examples: 42eaf8edf145cd95383d36789464050d1ea158d2
[INFO] validating manifest of Mestru/rust_examples 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 Mestru/rust_examples 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 Mestru/rust_examples
[INFO] finished frobbing Mestru/rust_examples
[INFO] frobbed toml for Mestru/rust_examples written to work/ex/clippy-test-run/sources/stable/gh/Mestru/rust_examples/Cargo.toml
[INFO] started frobbing Mestru/rust_examples
[INFO] finished frobbing Mestru/rust_examples
[INFO] frobbed toml for Mestru/rust_examples written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Mestru/rust_examples/Cargo.toml
[INFO] crate Mestru/rust_examples 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 Mestru/rust_examples against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Mestru/rust_examples:/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 -Dclippy::into_iter_on_array" "-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] 8cb875de799ee322b6206ed055a347c1863171d5cbef356cb2adbdb65d16fc17
[INFO] running `"docker" "start" "-a" "8cb875de799ee322b6206ed055a347c1863171d5cbef356cb2adbdb65d16fc17"`
[INFO] [stderr]     Checking rust_examples v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]  --> src/test.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     b
[INFO] [stderr]   |     ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]  --> src/test.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let b = b;
[INFO] [stderr]   |             ^
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]  --> src/test.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     b = b + 1;
[INFO] [stderr]   |     ^^^^^^^^^ help: replace it with: `b += 1`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]  --> src/test.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     b
[INFO] [stderr]   |     ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]  --> src/test.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let b = b;
[INFO] [stderr]   |             ^
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]  --> src/test.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     b = b + 1;
[INFO] [stderr]   |     ^^^^^^^^^ help: replace it with: `b += 1`
[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] error: equal expressions as operands to `-`
[INFO] [stderr]   --> src/main.rs:33:40
[INFO] [stderr]    |
[INFO] [stderr] 33 |         assert_eq!(0, testing_function(2 - 2));
[INFO] [stderr]    |                                        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::eq_op)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eq_op
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_examples`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8cb875de799ee322b6206ed055a347c1863171d5cbef356cb2adbdb65d16fc17"`
[INFO] running `"docker" "rm" "-f" "8cb875de799ee322b6206ed055a347c1863171d5cbef356cb2adbdb65d16fc17"`
[INFO] [stdout] 8cb875de799ee322b6206ed055a347c1863171d5cbef356cb2adbdb65d16fc17