[INFO] crate named_type_derive 0.1.6 is already in cache
[INFO] extracting crate named_type_derive 0.1.6 into work/ex/clippy-test-run/sources/stable/reg/named_type_derive/0.1.6
[INFO] extracting crate named_type_derive 0.1.6 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/named_type_derive/0.1.6
[INFO] validating manifest of named_type_derive-0.1.6 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 named_type_derive-0.1.6 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 named_type_derive-0.1.6
[INFO] finished frobbing named_type_derive-0.1.6
[INFO] frobbed toml for named_type_derive-0.1.6 written to work/ex/clippy-test-run/sources/stable/reg/named_type_derive/0.1.6/Cargo.toml
[INFO] started frobbing named_type_derive-0.1.6
[INFO] finished frobbing named_type_derive-0.1.6
[INFO] frobbed toml for named_type_derive-0.1.6 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/named_type_derive/0.1.6/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 named_type_derive-0.1.6 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/named_type_derive/0.1.6:/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] e6e0e0621ccb8d80f9c1ad4d08ebbaf83dec301db1ed90bd951450c79fc0d99d
[INFO] running `"docker" "start" "-a" "e6e0e0621ccb8d80f9c1ad4d08ebbaf83dec301db1ed90bd951450c79fc0d99d"`
[INFO] [stderr]     Checking named_type v0.1.6
[INFO] [stderr]     Checking named_type_derive v0.1.6 (/opt/crater/workdir)
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:26:10
[INFO] [stderr]    |
[INFO] [stderr] 26 |         .expect(&format!("Couldn't parse `{}` to tokens", result))
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Couldn't parse `{}` to tokens", result))`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/lib.rs:29:30
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn find_prefix_suffix(props: &Vec<NestedMetaItem>) -> Option<(&str, &str)> {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[NestedMetaItem]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:32:22
[INFO] [stderr]    |
[INFO] [stderr] 32 |           .find(|item| match item {
[INFO] [stderr]    |  ______________________^
[INFO] [stderr] 33 | |             &&NestedMetaItem::MetaItem(MetaItem::NameValue(ref ident, _)) => {
[INFO] [stderr] 34 | |                 ident == "short_prefix"
[INFO] [stderr] 35 | |             }
[INFO] [stderr] 36 | |             _ => false,
[INFO] [stderr] 37 | |         }).and_then(|item| match item {
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 32 |         .find(|item| match *item {
[INFO] [stderr] 33 |             &NestedMetaItem::MetaItem(MetaItem::NameValue(ref ident, _)) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 |           }).and_then(|item| match item {
[INFO] [stderr]    |  ____________________________^
[INFO] [stderr] 38 | |             &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr] 39 | |                 &Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr] 40 | |                 _ => None,
[INFO] [stderr] 41 | |             },
[INFO] [stderr] 42 | |             _ => None,
[INFO] [stderr] 43 | |         }).unwrap_or("");
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 37 |         }).and_then(|item| match *item {
[INFO] [stderr] 38 |             NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:38:77
[INFO] [stderr]    |
[INFO] [stderr] 38 |               &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr]    |  _____________________________________________________________________________^
[INFO] [stderr] 39 | |                 &Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr] 40 | |                 _ => None,
[INFO] [stderr] 41 | |             },
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 38 |             &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match *value {
[INFO] [stderr] 39 |                 Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:47:22
[INFO] [stderr]    |
[INFO] [stderr] 47 |           .find(|item| match item {
[INFO] [stderr]    |  ______________________^
[INFO] [stderr] 48 | |             &&NestedMetaItem::MetaItem(MetaItem::NameValue(ref ident, _)) => {
[INFO] [stderr] 49 | |                 ident.to_string() == "short_suffix"
[INFO] [stderr] 50 | |             }
[INFO] [stderr] 51 | |             _ => false,
[INFO] [stderr] 52 | |         }).and_then(|item| match item {
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 47 |         .find(|item| match *item {
[INFO] [stderr] 48 |             &NestedMetaItem::MetaItem(MetaItem::NameValue(ref ident, _)) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]   --> src/lib.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 ident.to_string() == "short_suffix"
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^ help: try: `*ident`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:52:28
[INFO] [stderr]    |
[INFO] [stderr] 52 |           }).and_then(|item| match item {
[INFO] [stderr]    |  ____________________________^
[INFO] [stderr] 53 | |             &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr] 54 | |                 &Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr] 55 | |                 _ => None,
[INFO] [stderr] 56 | |             },
[INFO] [stderr] 57 | |             _ => None,
[INFO] [stderr] 58 | |         }).unwrap_or("");
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 52 |         }).and_then(|item| match *item {
[INFO] [stderr] 53 |             NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:53:77
[INFO] [stderr]    |
[INFO] [stderr] 53 |               &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr]    |  _____________________________________________________________________________^
[INFO] [stderr] 54 | |                 &Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr] 55 | |                 _ => None,
[INFO] [stderr] 56 | |             },
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 53 |             &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match *value {
[INFO] [stderr] 54 |                 Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> src/lib.rs:70:26
[INFO] [stderr]    |
[INFO] [stderr] 70 |               .find(|attr| match &attr.value {
[INFO] [stderr]    |  __________________________^
[INFO] [stderr] 71 | |                 &MetaItem::List(ref ident, _) => ident == "named_type",
[INFO] [stderr] 72 | |                 _ => false,
[INFO] [stderr] 73 | |             }).and_then(|attr| match &attr.value {
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 70 |             .find(|attr| match attr.value {
[INFO] [stderr] 71 |                 MetaItem::List(ref ident, _) => ident == "named_type",
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> src/lib.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |               }).and_then(|attr| match &attr.value {
[INFO] [stderr]    |  ________________________________^
[INFO] [stderr] 74 | |                 &MetaItem::List(_, ref props) => find_prefix_suffix(props),
[INFO] [stderr] 75 | |                 _ => None,
[INFO] [stderr] 76 | |             }).unwrap_or(("", ""))
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 73 |             }).and_then(|attr| match attr.value {
[INFO] [stderr] 74 |                 MetaItem::List(_, ref props) => find_prefix_suffix(props),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `expect` followed by a function call
[INFO] [stderr]   --> src/lib.rs:26:10
[INFO] [stderr]    |
[INFO] [stderr] 26 |         .expect(&format!("Couldn't parse `{}` to tokens", result))
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Couldn't parse `{}` to tokens", result))`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/lib.rs:29:30
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn find_prefix_suffix(props: &Vec<NestedMetaItem>) -> Option<(&str, &str)> {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[NestedMetaItem]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:32:22
[INFO] [stderr]    |
[INFO] [stderr] 32 |           .find(|item| match item {
[INFO] [stderr]    |  ______________________^
[INFO] [stderr] 33 | |             &&NestedMetaItem::MetaItem(MetaItem::NameValue(ref ident, _)) => {
[INFO] [stderr] 34 | |                 ident == "short_prefix"
[INFO] [stderr] 35 | |             }
[INFO] [stderr] 36 | |             _ => false,
[INFO] [stderr] 37 | |         }).and_then(|item| match item {
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 32 |         .find(|item| match *item {
[INFO] [stderr] 33 |             &NestedMetaItem::MetaItem(MetaItem::NameValue(ref ident, _)) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 |           }).and_then(|item| match item {
[INFO] [stderr]    |  ____________________________^
[INFO] [stderr] 38 | |             &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr] 39 | |                 &Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr] 40 | |                 _ => None,
[INFO] [stderr] 41 | |             },
[INFO] [stderr] 42 | |             _ => None,
[INFO] [stderr] 43 | |         }).unwrap_or("");
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 37 |         }).and_then(|item| match *item {
[INFO] [stderr] 38 |             NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:38:77
[INFO] [stderr]    |
[INFO] [stderr] 38 |               &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr]    |  _____________________________________________________________________________^
[INFO] [stderr] 39 | |                 &Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr] 40 | |                 _ => None,
[INFO] [stderr] 41 | |             },
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 38 |             &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match *value {
[INFO] [stderr] 39 |                 Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:47:22
[INFO] [stderr]    |
[INFO] [stderr] 47 |           .find(|item| match item {
[INFO] [stderr]    |  ______________________^
[INFO] [stderr] 48 | |             &&NestedMetaItem::MetaItem(MetaItem::NameValue(ref ident, _)) => {
[INFO] [stderr] 49 | |                 ident.to_string() == "short_suffix"
[INFO] [stderr] 50 | |             }
[INFO] [stderr] 51 | |             _ => false,
[INFO] [stderr] 52 | |         }).and_then(|item| match item {
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 47 |         .find(|item| match *item {
[INFO] [stderr] 48 |             &NestedMetaItem::MetaItem(MetaItem::NameValue(ref ident, _)) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]   --> src/lib.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 ident.to_string() == "short_suffix"
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^ help: try: `*ident`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:52:28
[INFO] [stderr]    |
[INFO] [stderr] 52 |           }).and_then(|item| match item {
[INFO] [stderr]    |  ____________________________^
[INFO] [stderr] 53 | |             &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr] 54 | |                 &Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr] 55 | |                 _ => None,
[INFO] [stderr] 56 | |             },
[INFO] [stderr] 57 | |             _ => None,
[INFO] [stderr] 58 | |         }).unwrap_or("");
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 52 |         }).and_then(|item| match *item {
[INFO] [stderr] 53 |             NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/lib.rs:53:77
[INFO] [stderr]    |
[INFO] [stderr] 53 |               &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match value {
[INFO] [stderr]    |  _____________________________________________________________________________^
[INFO] [stderr] 54 | |                 &Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr] 55 | |                 _ => None,
[INFO] [stderr] 56 | |             },
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 53 |             &NestedMetaItem::MetaItem(MetaItem::NameValue(_, ref value)) => match *value {
[INFO] [stderr] 54 |                 Lit::Str(ref string, _) => Some(string.as_ref()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> src/lib.rs:70:26
[INFO] [stderr]    |
[INFO] [stderr] 70 |               .find(|attr| match &attr.value {
[INFO] [stderr]    |  __________________________^
[INFO] [stderr] 71 | |                 &MetaItem::List(ref ident, _) => ident == "named_type",
[INFO] [stderr] 72 | |                 _ => false,
[INFO] [stderr] 73 | |             }).and_then(|attr| match &attr.value {
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 70 |             .find(|attr| match attr.value {
[INFO] [stderr] 71 |                 MetaItem::List(ref ident, _) => ident == "named_type",
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]   --> src/lib.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |               }).and_then(|attr| match &attr.value {
[INFO] [stderr]    |  ________________________________^
[INFO] [stderr] 74 | |                 &MetaItem::List(_, ref props) => find_prefix_suffix(props),
[INFO] [stderr] 75 | |                 _ => None,
[INFO] [stderr] 76 | |             }).unwrap_or(("", ""))
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 73 |             }).and_then(|attr| match attr.value {
[INFO] [stderr] 74 |                 MetaItem::List(_, ref props) => find_prefix_suffix(props),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `"docker" "inspect" "e6e0e0621ccb8d80f9c1ad4d08ebbaf83dec301db1ed90bd951450c79fc0d99d"`
[INFO] running `"docker" "rm" "-f" "e6e0e0621ccb8d80f9c1ad4d08ebbaf83dec301db1ed90bd951450c79fc0d99d"`
[INFO] [stdout] e6e0e0621ccb8d80f9c1ad4d08ebbaf83dec301db1ed90bd951450c79fc0d99d