[INFO] crate binomial-iter 0.1.0 is already in cache
[INFO] extracting crate binomial-iter 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/binomial-iter/0.1.0
[INFO] extracting crate binomial-iter 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/binomial-iter/0.1.0
[INFO] validating manifest of binomial-iter-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 binomial-iter-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 binomial-iter-0.1.0
[INFO] finished frobbing binomial-iter-0.1.0
[INFO] frobbed toml for binomial-iter-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/binomial-iter/0.1.0/Cargo.toml
[INFO] started frobbing binomial-iter-0.1.0
[INFO] finished frobbing binomial-iter-0.1.0
[INFO] frobbed toml for binomial-iter-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/binomial-iter/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 binomial-iter-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-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/binomial-iter/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] 1e36e617e4ef1e5fd17f04d40faf0e63f69c45173af7f1cbb7adda05d32b72fb
[INFO] running `"docker" "start" "-a" "1e36e617e4ef1e5fd17f04d40faf0e63f69c45173af7f1cbb7adda05d32b72fb"`
[INFO] [stderr]     Checking binomial-iter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |             n: n,
[INFO] [stderr]    |             ^^^^ help: replace it with: `n`
[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/lib.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             k: k,
[INFO] [stderr]    |             ^^^^ help: replace it with: `k`
[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/lib.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |             n: n,
[INFO] [stderr]    |             ^^^^ help: replace it with: `n`
[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/lib.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             k: k,
[INFO] [stderr]    |             ^^^^ help: replace it with: `k`
[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: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:38:48
[INFO] [stderr]    |
[INFO] [stderr] 38 |         mul_div_gcd(binom(n - 1, k - 1), n, k).expect(&format!("cannot calculate `{}` choose `{}`, would overflow", n, k))
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("cannot calculate `{}` choose `{}`, would overflow", n))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `n_iter`
[INFO] [stderr]  --> src/test.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn n_iter() {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:38:48
[INFO] [stderr]    |
[INFO] [stderr] 38 |         mul_div_gcd(binom(n - 1, k - 1), n, k).expect(&format!("cannot calculate `{}` choose `{}`, would overflow", n, k))
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("cannot calculate `{}` choose `{}`, would overflow", n))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::expect_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/test.rs:15:40
[INFO] [stderr]    |
[INFO] [stderr] 15 |             while let Some((n, bin)) = it.next() {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: try: `for (n, bin) in it { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::while_let_on_iterator)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/test.rs:22:36
[INFO] [stderr]    |
[INFO] [stderr] 22 |         while let Some((n, bin)) = it.next() {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: try: `for (n, bin) in it { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/test.rs:42:36
[INFO] [stderr]    |
[INFO] [stderr] 42 |         while let Some((k, bin)) = it.next() {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: try: `for (k, bin) in it { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "1e36e617e4ef1e5fd17f04d40faf0e63f69c45173af7f1cbb7adda05d32b72fb"`
[INFO] running `"docker" "rm" "-f" "1e36e617e4ef1e5fd17f04d40faf0e63f69c45173af7f1cbb7adda05d32b72fb"`
[INFO] [stdout] 1e36e617e4ef1e5fd17f04d40faf0e63f69c45173af7f1cbb7adda05d32b72fb