[INFO] crate mail-headers 0.6.2 is already in cache
[INFO] extracting crate mail-headers 0.6.2 into work/ex/clippy-test-run/sources/stable/reg/mail-headers/0.6.2
[INFO] extracting crate mail-headers 0.6.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mail-headers/0.6.2
[INFO] validating manifest of mail-headers-0.6.2 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 mail-headers-0.6.2 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 mail-headers-0.6.2
[INFO] finished frobbing mail-headers-0.6.2
[INFO] frobbed toml for mail-headers-0.6.2 written to work/ex/clippy-test-run/sources/stable/reg/mail-headers/0.6.2/Cargo.toml
[INFO] started frobbing mail-headers-0.6.2
[INFO] finished frobbing mail-headers-0.6.2
[INFO] frobbed toml for mail-headers-0.6.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mail-headers/0.6.2/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 mail-headers-0.6.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/mail-headers/0.6.2:/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] 8babdfa8cbf31ea4732da580e987b9af53031f4ed1088fe4047c1be2a9a692e1
[INFO] running `"docker" "start" "-a" "8babdfa8cbf31ea4732da580e987b9af53031f4ed1088fe4047c1be2a9a692e1"`
[INFO] [stderr]     Checking quoted-string v0.6.0
[INFO] [stderr]     Checking soft-ascii-string v1.0.0
[INFO] [stderr]     Checking vec1 v1.1.0
[INFO] [stderr]     Checking vec-drain-where v1.0.0
[INFO] [stderr]     Checking lut v0.1.0-unstable
[INFO] [stderr]     Checking total-order-multi-map v0.4.5
[INFO] [stderr]     Checking media-type-impl-utils v0.3.0-unstable
[INFO] [stderr]     Checking media-type v0.4.0-unstable
[INFO] [stderr]     Checking mail-internals v0.2.0
[INFO] [stderr]     Checking mail-headers v0.6.2 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/header_components/media_type.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |             media_type: media_type,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `media_type`
[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/header_components/media_type.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |             media_type: media_type,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `media_type`
[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] error: testing needs feature `traceing` to be enabled
[INFO] [stderr]    --> src/lib.rs:141:1
[INFO] [stderr]     |
[INFO] [stderr] 141 | compile_error! { "testing needs feature `traceing` to be enabled" }
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mail-headers`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/header_components/disposition.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |             return Err(err);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(err)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to one
[INFO] [stderr]   --> src/name.rs:73:12
[INFO] [stderr]    |
[INFO] [stderr] 73 |         if name.len() < 1 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `name.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] error: you are deriving `Hash` but have implemented `PartialEq` explicitly
[INFO] [stderr]   --> src/data/inner_item.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 | #[derive(Debug, Clone, Hash, Eq)]
[INFO] [stderr]    |                        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::derive_hash_xor_eq)] on by default
[INFO] [stderr] note: `PartialEq` implemented here
[INFO] [stderr]   --> src/data/inner_item.rs:129:9
[INFO] [stderr]    |
[INFO] [stderr] 129| /         impl PartialEq for $name {
[INFO] [stderr] 130| |             fn eq(&self, other: &$name) -> bool {
[INFO] [stderr] 131| |                 let me: &$borrowed_form = &*self;
[INFO] [stderr] 132| |                 let other: &$borrowed_form = &*other;
[INFO] [stderr] 133| |                 me == other
[INFO] [stderr] 134| |             }
[INFO] [stderr] 135| |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr] ...
[INFO] [stderr] 145|   inner_impl!{ InnerAscii, SoftAsciiString,  SoftAsciiStr }
[INFO] [stderr]    |   --------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#derive_hash_xor_eq
[INFO] [stderr] 
[INFO] [stderr] error: you are deriving `Hash` but have implemented `PartialEq` explicitly
[INFO] [stderr]   --> src/data/inner_item.rs:54:24
[INFO] [stderr]    |
[INFO] [stderr] 54 | #[derive(Debug, Clone, Hash, Eq)]
[INFO] [stderr]    |                        ^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `PartialEq` implemented here
[INFO] [stderr]   --> src/data/inner_item.rs:129:9
[INFO] [stderr]    |
[INFO] [stderr] 129| /         impl PartialEq for $name {
[INFO] [stderr] 130| |             fn eq(&self, other: &$name) -> bool {
[INFO] [stderr] 131| |                 let me: &$borrowed_form = &*self;
[INFO] [stderr] 132| |                 let other: &$borrowed_form = &*other;
[INFO] [stderr] 133| |                 me == other
[INFO] [stderr] 134| |             }
[INFO] [stderr] 135| |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr] ...
[INFO] [stderr] 146|   inner_impl!{ InnerUtf8, String, str }
[INFO] [stderr]    |   ------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#derive_hash_xor_eq
[INFO] [stderr] 
[INFO] [stderr] warning: item `map::HeaderMap` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/map/mod.rs:166:1
[INFO] [stderr]     |
[INFO] [stderr] 166 | / impl HeaderMap {
[INFO] [stderr] 167 | |
[INFO] [stderr] 168 | |     /// create a new empty header map
[INFO] [stderr] 169 | |     pub fn new() -> Self {
[INFO] [stderr] ...   |
[INFO] [stderr] 461 | |
[INFO] [stderr] 462 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/map/mod.rs:648:22
[INFO] [stderr]     |
[INFO] [stderr] 648 |     fn identity_repr(&self) -> usize {
[INFO] [stderr]     |                      ^^^^^ help: consider passing by value instead: `self`
[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: length comparison to zero
[INFO] [stderr]   --> src/header_components/utils/text_partition.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 |     if text.len() == 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `text.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: single-character string constant used as pattern
[INFO] [stderr]   --> src/header_components/email.rs:56:42
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 let index = shared.find( "@" )
[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/header_components/email.rs:209:31
[INFO] [stderr]     |
[INFO] [stderr] 209 |         if domain.starts_with("[") && domain.ends_with("]") {
[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/header_components/email.rs:209:56
[INFO] [stderr]     |
[INFO] [stderr] 209 |         if domain.starts_with("[") && domain.ends_with("]") {
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/header_components/transfer_encoding.rs:48:18
[INFO] [stderr]    |
[INFO] [stderr] 48 |         Box::new(self.clone())
[INFO] [stderr]    |                  ^^^^^^^^^^^^ help: try dereferencing it: `*self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/header_components/unstructured.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 58 |         if text.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `text.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: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/header_components/media_type.rs:184:21
[INFO] [stderr]     |
[INFO] [stderr] 184 |                     Err(_) => {
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `mail-headers`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8babdfa8cbf31ea4732da580e987b9af53031f4ed1088fe4047c1be2a9a692e1"`
[INFO] running `"docker" "rm" "-f" "8babdfa8cbf31ea4732da580e987b9af53031f4ed1088fe4047c1be2a9a692e1"`
[INFO] [stdout] 8babdfa8cbf31ea4732da580e987b9af53031f4ed1088fe4047c1be2a9a692e1