[INFO] updating cached repository pipiTan/Armstrong-number
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pipiTan/Armstrong-number
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pipiTan/Armstrong-number" "work/ex/clippy-test-run/sources/stable/gh/pipiTan/Armstrong-number"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/pipiTan/Armstrong-number'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pipiTan/Armstrong-number" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pipiTan/Armstrong-number"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pipiTan/Armstrong-number'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 50eb810d1f84dbbcdcb538c75865c4fc4272fa02
[INFO] sha for GitHub repo pipiTan/Armstrong-number: 50eb810d1f84dbbcdcb538c75865c4fc4272fa02
[INFO] validating manifest of pipiTan/Armstrong-number 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 pipiTan/Armstrong-number 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 pipiTan/Armstrong-number
[INFO] finished frobbing pipiTan/Armstrong-number
[INFO] frobbed toml for pipiTan/Armstrong-number written to work/ex/clippy-test-run/sources/stable/gh/pipiTan/Armstrong-number/Cargo.toml
[INFO] started frobbing pipiTan/Armstrong-number
[INFO] finished frobbing pipiTan/Armstrong-number
[INFO] frobbed toml for pipiTan/Armstrong-number written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pipiTan/Armstrong-number/Cargo.toml
[INFO] crate pipiTan/Armstrong-number 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 pipiTan/Armstrong-number 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-6/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/pipiTan/Armstrong-number:/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] fccf46e37c7340e9d721433d23184c7110b68768993c0ad145de8d9c64a08fcf
[INFO] running `"docker" "start" "-a" "fccf46e37c7340e9d721433d23184c7110b68768993c0ad145de8d9c64a08fcf"`
[INFO] [stderr]     Checking Armstrong_number v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `Armstrong_number` should have a snake case name such as `armstrong_number`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> src/main.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn num_len (x: &f64) -> u32 {
[INFO] [stderr]   |                ^^^^ help: consider passing by value instead: `f64`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:12:22
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn num_as_vector (x: &i64) -> Vec<i64> {
[INFO] [stderr]    |                      ^^^^ help: consider passing by value instead: `i64`
[INFO] [stderr]    |
[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: The function/method `num_len` doesn't need a mutable reference
[INFO] [stderr]   --> src/main.rs:15:19
[INFO] [stderr]    |
[INFO] [stderr] 15 |     while num_len(&mut (number as f64)) != 1 {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_mut_passed)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_mut_passed
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:25:26
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn select_the_number (x: &i64) -> bool {
[INFO] [stderr]    |                          ^^^^ help: consider passing by value instead: `i64`
[INFO] [stderr]    |
[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: crate `Armstrong_number` should have a snake case name such as `armstrong_number`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> src/main.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn num_len (x: &f64) -> u32 {
[INFO] [stderr]   |                ^^^^ help: consider passing by value instead: `f64`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:12:22
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn num_as_vector (x: &i64) -> Vec<i64> {
[INFO] [stderr]    |                      ^^^^ help: consider passing by value instead: `i64`
[INFO] [stderr]    |
[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: The function/method `num_len` doesn't need a mutable reference
[INFO] [stderr]   --> src/main.rs:15:19
[INFO] [stderr]    |
[INFO] [stderr] 15 |     while num_len(&mut (number as f64)) != 1 {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_mut_passed)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_mut_passed
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:25:26
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn select_the_number (x: &i64) -> bool {
[INFO] [stderr]    |                          ^^^^ help: consider passing by value instead: `i64`
[INFO] [stderr]    |
[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 0.63s
[INFO] running `"docker" "inspect" "fccf46e37c7340e9d721433d23184c7110b68768993c0ad145de8d9c64a08fcf"`
[INFO] running `"docker" "rm" "-f" "fccf46e37c7340e9d721433d23184c7110b68768993c0ad145de8d9c64a08fcf"`
[INFO] [stdout] fccf46e37c7340e9d721433d23184c7110b68768993c0ad145de8d9c64a08fcf