[INFO] updating cached repository crisvergara/letter-count
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/crisvergara/letter-count
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/crisvergara/letter-count" "work/ex/clippy-test-run/sources/stable/gh/crisvergara/letter-count"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/crisvergara/letter-count'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/crisvergara/letter-count" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/crisvergara/letter-count"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/crisvergara/letter-count'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e097f88dd864d02c9cc044981fa9004f971c02fd
[INFO] sha for GitHub repo crisvergara/letter-count: e097f88dd864d02c9cc044981fa9004f971c02fd
[INFO] validating manifest of crisvergara/letter-count 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 crisvergara/letter-count 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 crisvergara/letter-count
[INFO] finished frobbing crisvergara/letter-count
[INFO] frobbed toml for crisvergara/letter-count written to work/ex/clippy-test-run/sources/stable/gh/crisvergara/letter-count/Cargo.toml
[INFO] started frobbing crisvergara/letter-count
[INFO] finished frobbing crisvergara/letter-count
[INFO] frobbed toml for crisvergara/letter-count written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/crisvergara/letter-count/Cargo.toml
[INFO] crate crisvergara/letter-count 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 crisvergara/letter-count 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-0/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/crisvergara/letter-count:/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] dbf861c1dcd3b28528e45872337275f7804e6ed224951b9137caf9f85224c060
[INFO] running `"docker" "start" "-a" "dbf861c1dcd3b28528e45872337275f7804e6ed224951b9137caf9f85224c060"`
[INFO] [stderr]     Checking letter-count v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         match counts[i % keysize].entry(c) {
[INFO] [stderr] 29 | |             Occupied(ref mut entry) => *entry.get_mut() += 1,
[INFO] [stderr] 30 | |             _ => ()
[INFO] [stderr] 31 | |         }
[INFO] [stderr]    | |_________^ help: try this: `if let Occupied(ref mut entry) = counts[i % keysize].entry(c) { *entry.get_mut() += 1 }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `x` is used to index `counts`
[INFO] [stderr]   --> src/main.rs:67:30
[INFO] [stderr]    |
[INFO] [stderr] 67 |                     for x in 0..counts.len() {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 67 |                     for (x, <item>) in counts.iter().enumerate() {
[INFO] [stderr]    |                         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         match counts[i % keysize].entry(c) {
[INFO] [stderr] 29 | |             Occupied(ref mut entry) => *entry.get_mut() += 1,
[INFO] [stderr] 30 | |             _ => ()
[INFO] [stderr] 31 | |         }
[INFO] [stderr]    | |_________^ help: try this: `if let Occupied(ref mut entry) = counts[i % keysize].entry(c) { *entry.get_mut() += 1 }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `x` is used to index `counts`
[INFO] [stderr]   --> src/main.rs:67:30
[INFO] [stderr]    |
[INFO] [stderr] 67 |                     for x in 0..counts.len() {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 67 |                     for (x, <item>) in counts.iter().enumerate() {
[INFO] [stderr]    |                         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "dbf861c1dcd3b28528e45872337275f7804e6ed224951b9137caf9f85224c060"`
[INFO] running `"docker" "rm" "-f" "dbf861c1dcd3b28528e45872337275f7804e6ed224951b9137caf9f85224c060"`
[INFO] [stdout] dbf861c1dcd3b28528e45872337275f7804e6ed224951b9137caf9f85224c060