[INFO] crate jconfig 0.1.0 is already in cache
[INFO] extracting crate jconfig 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/jconfig/0.1.0
[INFO] extracting crate jconfig 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/jconfig/0.1.0
[INFO] validating manifest of jconfig-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 jconfig-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 jconfig-0.1.0
[INFO] finished frobbing jconfig-0.1.0
[INFO] frobbed toml for jconfig-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/jconfig/0.1.0/Cargo.toml
[INFO] started frobbing jconfig-0.1.0
[INFO] finished frobbing jconfig-0.1.0
[INFO] frobbed toml for jconfig-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/jconfig/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 jconfig-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-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/jconfig/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] 33eeb96d728fd0b3665dac39f213cdbdcb60bdae70ea9341e9855f21e7889e1a
[INFO] running `"docker" "start" "-a" "33eeb96d728fd0b3665dac39f213cdbdcb60bdae70ea9341e9855f21e7889e1a"`
[INFO] [stderr]     Checking jconfig v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/field.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     return Json::from_str(&s).unwrap_or(Json::Null);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Json::from_str(&s).unwrap_or(Json::Null)`
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/item.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/item.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/field.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     return Json::from_str(&s).unwrap_or(Json::Null);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Json::from_str(&s).unwrap_or(Json::Null)`
[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: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/field.rs:47:29
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let s = json::encode(x).unwrap_or("".to_string());
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "".to_string())`
[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: item `config::Config` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/config.rs:38:1
[INFO] [stderr]     |
[INFO] [stderr] 38  | / impl Config {
[INFO] [stderr] 39  | |     /// Creates a new, empty configuration
[INFO] [stderr] 40  | |     pub fn new() -> Self { Config { data: HashMap::new() } }
[INFO] [stderr] 41  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 147 | |     pub fn clear(&mut self) { self.data.clear() }
[INFO] [stderr] 148 | | }
[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: defining a method called `from_str` on this type; consider implementing the `std::str::FromStr` trait or choosing a less ambiguous name
[INFO] [stderr]   --> src/config.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     pub fn from_str<'a>(s: &'a str) -> Result<Self> {
[INFO] [stderr] 58 | |         match try!(Json::from_str(s)) {
[INFO] [stderr] 59 | |             Json::Object(ref obj) => {
[INFO] [stderr] 60 | |                 let mut config = Config::new();
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |         }
[INFO] [stderr] 73 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::should_implement_trait)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]   --> src/config.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     pub fn from_str<'a>(s: &'a str) -> Result<Self> {
[INFO] [stderr] 58 | |         match try!(Json::from_str(s)) {
[INFO] [stderr] 59 | |             Json::Object(ref obj) => {
[INFO] [stderr] 60 | |                 let mut config = Config::new();
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |         }
[INFO] [stderr] 73 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a pointer type (`*const ()`) to a reference type (`&T`)
[INFO] [stderr]   --> src/item.rs:42:65
[INFO] [stderr]    |
[INFO] [stderr] 42 |     unsafe fn downcast_ref_unchecked<T: 'static>(&self) -> &T { mem::transmute(traitobject::data(self)) }
[INFO] [stderr]    |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(traitobject::data(self) as *const T)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::transmute_ptr_to_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#transmute_ptr_to_ref
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a pointer type (`*mut ()`) to a reference type (`&mut T`)
[INFO] [stderr]   --> src/item.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         mem::transmute(traitobject::data_mut(self))
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(traitobject::data_mut(self) as *mut T)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#transmute_ptr_to_ref
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/item.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/item.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/field.rs:47:29
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let s = json::encode(x).unwrap_or("".to_string());
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "".to_string())`
[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: item `config::Config` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/config.rs:38:1
[INFO] [stderr]     |
[INFO] [stderr] 38  | / impl Config {
[INFO] [stderr] 39  | |     /// Creates a new, empty configuration
[INFO] [stderr] 40  | |     pub fn new() -> Self { Config { data: HashMap::new() } }
[INFO] [stderr] 41  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 147 | |     pub fn clear(&mut self) { self.data.clear() }
[INFO] [stderr] 148 | | }
[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: defining a method called `from_str` on this type; consider implementing the `std::str::FromStr` trait or choosing a less ambiguous name
[INFO] [stderr]   --> src/config.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     pub fn from_str<'a>(s: &'a str) -> Result<Self> {
[INFO] [stderr] 58 | |         match try!(Json::from_str(s)) {
[INFO] [stderr] 59 | |             Json::Object(ref obj) => {
[INFO] [stderr] 60 | |                 let mut config = Config::new();
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |         }
[INFO] [stderr] 73 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::should_implement_trait)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]   --> src/config.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     pub fn from_str<'a>(s: &'a str) -> Result<Self> {
[INFO] [stderr] 58 | |         match try!(Json::from_str(s)) {
[INFO] [stderr] 59 | |             Json::Object(ref obj) => {
[INFO] [stderr] 60 | |                 let mut config = Config::new();
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |         }
[INFO] [stderr] 73 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a pointer type (`*const ()`) to a reference type (`&T`)
[INFO] [stderr]   --> src/item.rs:42:65
[INFO] [stderr]    |
[INFO] [stderr] 42 |     unsafe fn downcast_ref_unchecked<T: 'static>(&self) -> &T { mem::transmute(traitobject::data(self)) }
[INFO] [stderr]    |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(traitobject::data(self) as *const T)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::transmute_ptr_to_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#transmute_ptr_to_ref
[INFO] [stderr] 
[INFO] [stderr] warning: transmute from a pointer type (`*mut ()`) to a reference type (`&mut T`)
[INFO] [stderr]   --> src/item.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         mem::transmute(traitobject::data_mut(self))
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&mut *(traitobject::data_mut(self) as *mut T)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#transmute_ptr_to_ref
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> examples/basic.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | / config_field!{
[INFO] [stderr] 20 | |     /// Indicates some port of sorts...
[INFO] [stderr] 21 | |     ///
[INFO] [stderr] 22 | |     /// This will show up in your documentation.
[INFO] [stderr] 23 | |     struct Port: u16,
[INFO] [stderr] 24 | |     key: "port"
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `"docker" "inspect" "33eeb96d728fd0b3665dac39f213cdbdcb60bdae70ea9341e9855f21e7889e1a"`
[INFO] running `"docker" "rm" "-f" "33eeb96d728fd0b3665dac39f213cdbdcb60bdae70ea9341e9855f21e7889e1a"`
[INFO] [stdout] 33eeb96d728fd0b3665dac39f213cdbdcb60bdae70ea9341e9855f21e7889e1a