[INFO] crate promising-future 0.2.4 is already in cache
[INFO] extracting crate promising-future 0.2.4 into work/ex/clippy-test-run/sources/stable/reg/promising-future/0.2.4
[INFO] extracting crate promising-future 0.2.4 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/promising-future/0.2.4
[INFO] validating manifest of promising-future-0.2.4 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 promising-future-0.2.4 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 promising-future-0.2.4
[INFO] finished frobbing promising-future-0.2.4
[INFO] frobbed toml for promising-future-0.2.4 written to work/ex/clippy-test-run/sources/stable/reg/promising-future/0.2.4/Cargo.toml
[INFO] started frobbing promising-future-0.2.4
[INFO] finished frobbing promising-future-0.2.4
[INFO] frobbed toml for promising-future-0.2.4 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/promising-future/0.2.4/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 promising-future-0.2.4 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/promising-future/0.2.4:/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] 93901ba04755aadae886356b588a3b821b9b27694e45386fcd44289dcbd0f43c
[INFO] running `"docker" "start" "-a" "93901ba04755aadae886356b588a3b821b9b27694e45386fcd44289dcbd0f43c"`
[INFO] [stderr]     Checking promising-future v0.2.4 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/futurestream.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             tx: tx,
[INFO] [stderr]    |             ^^^^^^ help: replace it with: `tx`
[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/futurestream.rs:142:30
[INFO] [stderr]     |
[INFO] [stderr] 142 |         FutureStreamWaiter { fs: fs, rx: Some(rx) }
[INFO] [stderr]     |                              ^^^^^^ help: replace it with: `fs`
[INFO] [stderr]     |
[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/futurestream.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             tx: tx,
[INFO] [stderr]    |             ^^^^^^ help: replace it with: `tx`
[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/futurestream.rs:142:30
[INFO] [stderr]     |
[INFO] [stderr] 142 |         FutureStreamWaiter { fs: fs, rx: Some(rx) }
[INFO] [stderr]     |                              ^^^^^^ help: replace it with: `fs`
[INFO] [stderr]     |
[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: you should consider adding a `Default` implementation for `inner::Inner<T>`
[INFO] [stderr]   --> src/inner.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new() -> Inner<T> { Inner::Empty }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl Default for inner::Inner<T> {
[INFO] [stderr] 13 |     fn default() -> Self {
[INFO] [stderr] 14 |         Self::new()
[INFO] [stderr] 15 |     }
[INFO] [stderr] 16 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/inner.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         if let &Inner::Gone = self { true } else { false }
[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] 16 |         if let Inner::Gone = *self { true } else { false }
[INFO] [stderr]    |                ^^^^^^^^^^^   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/inner.rs:24:21
[INFO] [stderr]    |
[INFO] [stderr] 24 |           let state = match self {
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 25 | |             &Empty => "Empty".into(),
[INFO] [stderr] 26 | |             &Val(ref v) => format!("Val({:?})", v),
[INFO] [stderr] 27 | |             &Gone => "Gone".into(),
[INFO] [stderr] 28 | |             &Callback(_) => "Callback(_)".into(),
[INFO] [stderr] 29 | |         };
[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] 24 |         let state = match *self {
[INFO] [stderr] 25 |             Empty => "Empty".into(),
[INFO] [stderr] 26 |             Val(ref v) => format!("Val({:?})", v),
[INFO] [stderr] 27 |             Gone => "Gone".into(),
[INFO] [stderr] 28 |             Callback(_) => "Callback(_)".into(),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: replacing an `Option` with `None`
[INFO] [stderr]    --> src/future.rs:174:25
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 let v = mem::replace(v, None);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `v.take()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::mem_replace_option_with_none)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_option_with_none
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/future.rs:292:9
[INFO] [stderr]     |
[INFO] [stderr] 292 | /         if let &mut Future::Prom(ref mut inner) = self {
[INFO] [stderr] 293 | |             let mut lk = inner.mx.lock().expect("lock");
[INFO] [stderr] 294 | |
[INFO] [stderr] 295 | |             if let &Inner::Empty = &*lk {
[INFO] [stderr] 296 | |                 *lk = Inner::Gone;
[INFO] [stderr] 297 | |             }
[INFO] [stderr] 298 | |         }
[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] 292 |         if let Future::Prom(ref mut inner) = *self {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]    --> src/future.rs:295:13
[INFO] [stderr]     |
[INFO] [stderr] 295 | /             if let &Inner::Empty = &*lk {
[INFO] [stderr] 296 | |                 *lk = Inner::Gone;
[INFO] [stderr] 297 | |             }
[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] 295 |             if let Inner::Empty = *lk {
[INFO] [stderr]     |                    ^^^^^^^^^^^^   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/future.rs:306:21
[INFO] [stderr]     |
[INFO] [stderr] 306 |           let state = match self {
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 307 | |             &Const(ref v) => format!("Const({:?})", v),
[INFO] [stderr] 308 | |             &Prom(ref inner) => {
[INFO] [stderr] 309 | |                 let lk = inner.mx.lock().unwrap();
[INFO] [stderr] 310 | |                 format!("Prom({:?})", *lk)
[INFO] [stderr] 311 | |             },
[INFO] [stderr] 312 | |         };
[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] 306 |         let state = match *self {
[INFO] [stderr] 307 |             Const(ref v) => format!("Const({:?})", v),
[INFO] [stderr] 308 |             Prom(ref inner) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `futurestream::FutureStream<T>`
[INFO] [stderr]   --> src/futurestream.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 | /     pub fn new() -> FutureStream<T> {
[INFO] [stderr] 71 | |         let (tx, rx) = channel();
[INFO] [stderr] 72 | |         let inner = FutureStreamInner {
[INFO] [stderr] 73 | |             rx: Some(rx),
[INFO] [stderr] ...  |
[INFO] [stderr] 80 | |         }
[INFO] [stderr] 81 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 69 | impl Default for futurestream::FutureStream<T> {
[INFO] [stderr] 70 |     fn default() -> Self {
[INFO] [stderr] 71 |         Self::new()
[INFO] [stderr] 72 |     }
[INFO] [stderr] 73 | }
[INFO] [stderr]    |
[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/futurestream.rs:99:5
[INFO] [stderr]     |
[INFO] [stderr] 99  | /     pub fn waiter<'fs>(&'fs self) -> FutureStreamWaiter<'fs, T> {
[INFO] [stderr] 100 | |         let mut inner = self.inner.mx.lock().unwrap();
[INFO] [stderr] 101 | |
[INFO] [stderr] 102 | |         loop {
[INFO] [stderr] ...   |
[INFO] [stderr] 107 | |         }
[INFO] [stderr] 108 | |     }
[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: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/futurestream.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 | /     pub fn try_waiter<'fs>(&'fs self) -> Option<FutureStreamWaiter<'fs, T>> {
[INFO] [stderr] 112 | |         let mut inner = self.inner.mx.lock().unwrap();
[INFO] [stderr] 113 | |
[INFO] [stderr] 114 | |         match inner.rx.take() {
[INFO] [stderr] ...   |
[INFO] [stderr] 117 | |         }
[INFO] [stderr] 118 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: in an 'if' condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a 'let'
[INFO] [stderr]    --> src/futurestream.rs:148:12
[INFO] [stderr]     |
[INFO] [stderr] 148 |         if { let l = self.fs.inner.mx.lock().unwrap(); l.pending == 0 } {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::block_in_if_condition_stmt)] on by default
[INFO] [stderr]     = help: try
[INFO] [stderr]             let res = { let l = self.fs.inner.mx.lock().unwrap(); l.pending == 0 };
[INFO] [stderr]             if res {
[INFO] [stderr]                 // Nothing left
[INFO] [stderr]                 None
[INFO] [stderr]             } ... 
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#block_in_if_condition_stmt
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `inner::Inner<T>`
[INFO] [stderr]   --> src/inner.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new() -> Inner<T> { Inner::Empty }
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl Default for inner::Inner<T> {
[INFO] [stderr] 13 |     fn default() -> Self {
[INFO] [stderr] 14 |         Self::new()
[INFO] [stderr] 15 |     }
[INFO] [stderr] 16 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/inner.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         if let &Inner::Gone = self { true } else { false }
[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] 16 |         if let Inner::Gone = *self { true } else { false }
[INFO] [stderr]    |                ^^^^^^^^^^^   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/inner.rs:24:21
[INFO] [stderr]    |
[INFO] [stderr] 24 |           let state = match self {
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 25 | |             &Empty => "Empty".into(),
[INFO] [stderr] 26 | |             &Val(ref v) => format!("Val({:?})", v),
[INFO] [stderr] 27 | |             &Gone => "Gone".into(),
[INFO] [stderr] 28 | |             &Callback(_) => "Callback(_)".into(),
[INFO] [stderr] 29 | |         };
[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] 24 |         let state = match *self {
[INFO] [stderr] 25 |             Empty => "Empty".into(),
[INFO] [stderr] 26 |             Val(ref v) => format!("Val({:?})", v),
[INFO] [stderr] 27 |             Gone => "Gone".into(),
[INFO] [stderr] 28 |             Callback(_) => "Callback(_)".into(),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: replacing an `Option` with `None`
[INFO] [stderr]    --> src/future.rs:174:25
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 let v = mem::replace(v, None);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `v.take()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::mem_replace_option_with_none)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_option_with_none
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/future.rs:292:9
[INFO] [stderr]     |
[INFO] [stderr] 292 | /         if let &mut Future::Prom(ref mut inner) = self {
[INFO] [stderr] 293 | |             let mut lk = inner.mx.lock().expect("lock");
[INFO] [stderr] 294 | |
[INFO] [stderr] 295 | |             if let &Inner::Empty = &*lk {
[INFO] [stderr] 296 | |                 *lk = Inner::Gone;
[INFO] [stderr] 297 | |             }
[INFO] [stderr] 298 | |         }
[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] 292 |         if let Future::Prom(ref mut inner) = *self {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]    --> src/future.rs:295:13
[INFO] [stderr]     |
[INFO] [stderr] 295 | /             if let &Inner::Empty = &*lk {
[INFO] [stderr] 296 | |                 *lk = Inner::Gone;
[INFO] [stderr] 297 | |             }
[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] 295 |             if let Inner::Empty = *lk {
[INFO] [stderr]     |                    ^^^^^^^^^^^^   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/future.rs:306:21
[INFO] [stderr]     |
[INFO] [stderr] 306 |           let state = match self {
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 307 | |             &Const(ref v) => format!("Const({:?})", v),
[INFO] [stderr] 308 | |             &Prom(ref inner) => {
[INFO] [stderr] 309 | |                 let lk = inner.mx.lock().unwrap();
[INFO] [stderr] 310 | |                 format!("Prom({:?})", *lk)
[INFO] [stderr] 311 | |             },
[INFO] [stderr] 312 | |         };
[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] 306 |         let state = match *self {
[INFO] [stderr] 307 |             Const(ref v) => format!("Const({:?})", v),
[INFO] [stderr] 308 |             Prom(ref inner) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `futurestream::FutureStream<T>`
[INFO] [stderr]   --> src/futurestream.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 | /     pub fn new() -> FutureStream<T> {
[INFO] [stderr] 71 | |         let (tx, rx) = channel();
[INFO] [stderr] 72 | |         let inner = FutureStreamInner {
[INFO] [stderr] 73 | |             rx: Some(rx),
[INFO] [stderr] ...  |
[INFO] [stderr] 80 | |         }
[INFO] [stderr] 81 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 69 | impl Default for futurestream::FutureStream<T> {
[INFO] [stderr] 70 |     fn default() -> Self {
[INFO] [stderr] 71 |         Self::new()
[INFO] [stderr] 72 |     }
[INFO] [stderr] 73 | }
[INFO] [stderr]    |
[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/futurestream.rs:99:5
[INFO] [stderr]     |
[INFO] [stderr] 99  | /     pub fn waiter<'fs>(&'fs self) -> FutureStreamWaiter<'fs, T> {
[INFO] [stderr] 100 | |         let mut inner = self.inner.mx.lock().unwrap();
[INFO] [stderr] 101 | |
[INFO] [stderr] 102 | |         loop {
[INFO] [stderr] ...   |
[INFO] [stderr] 107 | |         }
[INFO] [stderr] 108 | |     }
[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: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/futurestream.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 | /     pub fn try_waiter<'fs>(&'fs self) -> Option<FutureStreamWaiter<'fs, T>> {
[INFO] [stderr] 112 | |         let mut inner = self.inner.mx.lock().unwrap();
[INFO] [stderr] 113 | |
[INFO] [stderr] 114 | |         match inner.rx.take() {
[INFO] [stderr] ...   |
[INFO] [stderr] 117 | |         }
[INFO] [stderr] 118 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: in an 'if' condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a 'let'
[INFO] [stderr]    --> src/futurestream.rs:148:12
[INFO] [stderr]     |
[INFO] [stderr] 148 |         if { let l = self.fs.inner.mx.lock().unwrap(); l.pending == 0 } {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::block_in_if_condition_stmt)] on by default
[INFO] [stderr]     = help: try
[INFO] [stderr]             let res = { let l = self.fs.inner.mx.lock().unwrap(); l.pending == 0 };
[INFO] [stderr]             if res {
[INFO] [stderr]                 // Nothing left
[INFO] [stderr]                 None
[INFO] [stderr]             } ... 
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#block_in_if_condition_stmt
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> benches/bench.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `promising-future`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: digits grouped inconsistently by underscores
[INFO] [stderr]   --> tests/tests.rs:15:65
[INFO] [stderr]    |
[INFO] [stderr] 15 |     thread::sleep(Duration::new(ms as u64 / 1000, ((ms as u64 * 1000_000) % 1000_000_000) as u32))
[INFO] [stderr]    |                                                                 ^^^^^^^^ help: consider: `1_000_000`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::inconsistent_digit_grouping)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_digit_grouping
[INFO] [stderr] 
[INFO] [stderr] warning: digits grouped inconsistently by underscores
[INFO] [stderr]   --> tests/tests.rs:15:77
[INFO] [stderr]    |
[INFO] [stderr] 15 |     thread::sleep(Duration::new(ms as u64 / 1000, ((ms as u64 * 1000_000) % 1000_000_000) as u32))
[INFO] [stderr]    |                                                                             ^^^^^^^^^^^^ help: consider: `1_000_000_000`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_digit_grouping
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> tests/tests.rs:481:24
[INFO] [stderr]     |
[INFO] [stderr] 481 |     const ITERS: u32 = 100000;
[INFO] [stderr]     |                        ^^^^^^ help: consider: `100_000`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> tests/tests.rs:517:24
[INFO] [stderr]     |
[INFO] [stderr] 517 |     const ITERS: u32 = 1000000;
[INFO] [stderr]     |                        ^^^^^^^ help: consider: `1_000_000`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]   --> tests/tests.rs:15:33
[INFO] [stderr]    |
[INFO] [stderr] 15 |     thread::sleep(Duration::new(ms as u64 / 1000, ((ms as u64 * 1000_000) % 1000_000_000) as u32))
[INFO] [stderr]    |                                 ^^^^^^^^^ help: try: `u64::from(ms)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]   --> tests/tests.rs:15:53
[INFO] [stderr]    |
[INFO] [stderr] 15 |     thread::sleep(Duration::new(ms as u64 / 1000, ((ms as u64 * 1000_000) % 1000_000_000) as u32))
[INFO] [stderr]    |                                                     ^^^^^^^^^ help: try: `u64::from(ms)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> tests/tests.rs:482:43
[INFO] [stderr]     |
[INFO] [stderr] 482 |     let (futs, proms): (Vec<_>, Vec<_>) = (0..ITERS).into_iter().map(|i| { let (f, p) = future_promise(); ((i, f), (i, p)) }).unzip();
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(0..ITERS)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> tests/tests.rs:504:9
[INFO] [stderr]     |
[INFO] [stderr] 504 |         Err(_) => panic!("futurer failed"),
[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] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> tests/tests.rs:508:9
[INFO] [stderr]     |
[INFO] [stderr] 508 |         Err(_) => panic!("promiser failed"),
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[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] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> tests/tests.rs:551:9
[INFO] [stderr]     |
[INFO] [stderr] 551 |         Err(_) => panic!("promiser failed"),
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[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] warning: identical conversion
[INFO] [stderr]    --> tests/tests.rs:562:43
[INFO] [stderr]     |
[INFO] [stderr] 562 |     let (futs, proms): (Vec<_>, Vec<_>) = (0..ITERS).into_iter().map(|i| { let (f, p) = future_promise(); (f, (i, p)) }).unzip();
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(0..ITERS)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> tests/tests.rs:589:9
[INFO] [stderr]     |
[INFO] [stderr] 589 |         Err(_) => panic!("promiser failed"),
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[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: build failed
[INFO] running `"docker" "inspect" "93901ba04755aadae886356b588a3b821b9b27694e45386fcd44289dcbd0f43c"`
[INFO] running `"docker" "rm" "-f" "93901ba04755aadae886356b588a3b821b9b27694e45386fcd44289dcbd0f43c"`
[INFO] [stdout] 93901ba04755aadae886356b588a3b821b9b27694e45386fcd44289dcbd0f43c