[INFO] crate maildir-pack 0.1.0 is already in cache
[INFO] extracting crate maildir-pack 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/maildir-pack/0.1.0
[INFO] extracting crate maildir-pack 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/maildir-pack/0.1.0
[INFO] validating manifest of maildir-pack-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 maildir-pack-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 maildir-pack-0.1.0
[INFO] finished frobbing maildir-pack-0.1.0
[INFO] frobbed toml for maildir-pack-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/maildir-pack/0.1.0/Cargo.toml
[INFO] started frobbing maildir-pack-0.1.0
[INFO] finished frobbing maildir-pack-0.1.0
[INFO] frobbed toml for maildir-pack-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/maildir-pack/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 maildir-pack-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/maildir-pack/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] 33bc5843301e5bd78aa52f0beee2fefcdd9d9baeae09cd8df6d4a83506ac8bf0
[INFO] running `"docker" "start" "-a" "33bc5843301e5bd78aa52f0beee2fefcdd9d9baeae09cd8df6d4a83506ac8bf0"`
[INFO] [stderr]     Checking maildir-pack v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/verify.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |             input: input,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `input`
[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/verify.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |             input: input,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `input`
[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: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> tests/basic.rs:28:24
[INFO] [stderr]    |
[INFO] [stderr] 28 | const ARCHIVE_SUFFIX: &'static str = ".tar.xz";
[INFO] [stderr]    |                       -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> tests/basic.rs:29:23
[INFO] [stderr]    |
[INFO] [stderr] 29 | const BACKUP_SUFFIX: &'static str = ".tar.xz.bak";
[INFO] [stderr]    |                      -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]   --> tests/basic.rs:78:44
[INFO] [stderr]    |
[INFO] [stderr] 78 |             let entry = result.entry(name).or_insert(vec![]);
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> tests/basic.rs:279:16
[INFO] [stderr]     |
[INFO] [stderr] 279 |             if expected_content.len() > 0 {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!expected_content.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> tests/basic.rs:302:8
[INFO] [stderr]     |
[INFO] [stderr] 302 |     if expected.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!expected.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> tests/basic.rs:303:35
[INFO] [stderr]     |
[INFO] [stderr] 303 |         let archives = join_names(expected.keys().map(|&name| name));
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `expected.keys().cloned()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> tests/basic.rs:307:8
[INFO] [stderr]     |
[INFO] [stderr] 307 |     if expected_backup.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!expected_backup.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> tests/basic.rs:308:34
[INFO] [stderr]     |
[INFO] [stderr] 308 |         let backups = join_names(expected_backup.keys().map(|&name| name));
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `expected_backup.keys().cloned()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> tests/basic.rs:336:8
[INFO] [stderr]     |
[INFO] [stderr] 336 |     if expected.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!expected.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> tests/basic.rs:403:18
[INFO] [stderr]     |
[INFO] [stderr] 403 |     let merged = second_set.union(&initial_set).map(|&email| email).collect();
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `second_set.union(&initial_set).cloned()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/collect.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 |     if dt.ends_with(")") {
[INFO] [stderr]    |                     ^^^ help: try using a char instead: `')'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/collect.rs:13:37
[INFO] [stderr]    |
[INFO] [stderr] 13 |         if let Some(pos) = dt.rfind("(") {
[INFO] [stderr]    |                                     ^^^ help: try using a char instead: `'('`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/collect.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 |     if dt.ends_with(")") {
[INFO] [stderr]    |                     ^^^ help: try using a char instead: `')'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/collect.rs:13:37
[INFO] [stderr]    |
[INFO] [stderr] 13 |         if let Some(pos) = dt.rfind("(") {
[INFO] [stderr]    |                                     ^^^ help: try using a char instead: `'('`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.40s
[INFO] running `"docker" "inspect" "33bc5843301e5bd78aa52f0beee2fefcdd9d9baeae09cd8df6d4a83506ac8bf0"`
[INFO] running `"docker" "rm" "-f" "33bc5843301e5bd78aa52f0beee2fefcdd9d9baeae09cd8df6d4a83506ac8bf0"`
[INFO] [stdout] 33bc5843301e5bd78aa52f0beee2fefcdd9d9baeae09cd8df6d4a83506ac8bf0