[INFO] crate math_utils 0.1.0 is already in cache
[INFO] extracting crate math_utils 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/math_utils/0.1.0
[INFO] extracting crate math_utils 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/math_utils/0.1.0
[INFO] validating manifest of math_utils-0.1.0 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 math_utils-0.1.0 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 math_utils-0.1.0
[INFO] finished frobbing math_utils-0.1.0
[INFO] frobbed toml for math_utils-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/math_utils/0.1.0/Cargo.toml
[INFO] started frobbing math_utils-0.1.0
[INFO] finished frobbing math_utils-0.1.0
[INFO] frobbed toml for math_utils-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/math_utils/0.1.0/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 math_utils-0.1.0 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/reg/math_utils/0.1.0:/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] 78f5b152a1dd9b072a21a42663143f9f7a9d53337634bf335bec592b45a6f471
[INFO] running `"docker" "start" "-a" "78f5b152a1dd9b072a21a42663143f9f7a9d53337634bf335bec592b45a6f471"`
[INFO] [stderr]     Checking math_utils v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: this looks like you are swapping `b` and `a` manually
[INFO] [stderr]   --> src/lib.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 | /             let t = b;
[INFO] [stderr] 18 | |             b = a;
[INFO] [stderr] 19 | |             a = t;
[INFO] [stderr]    | |_________________^ help: try: `std::mem::swap(&mut b, &mut a)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::manual_swap)] on by default
[INFO] [stderr]    = note: or maybe you should use `std::mem::replace`?
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         b = b % a;
[INFO] [stderr]    |         ^^^^^^^^^ help: replace it with: `b %= a`
[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: this looks like you are swapping `b` and `a` manually
[INFO] [stderr]   --> src/lib.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 | /             let t = b;
[INFO] [stderr] 18 | |             b = a;
[INFO] [stderr] 19 | |             a = t;
[INFO] [stderr]    | |_________________^ help: try: `std::mem::swap(&mut b, &mut a)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::manual_swap)] on by default
[INFO] [stderr]    = note: or maybe you should use `std::mem::replace`?
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         b = b % a;
[INFO] [stderr]    |         ^^^^^^^^^ help: replace it with: `b %= a`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "78f5b152a1dd9b072a21a42663143f9f7a9d53337634bf335bec592b45a6f471"`
[INFO] running `"docker" "rm" "-f" "78f5b152a1dd9b072a21a42663143f9f7a9d53337634bf335bec592b45a6f471"`
[INFO] [stdout] 78f5b152a1dd9b072a21a42663143f9f7a9d53337634bf335bec592b45a6f471