[INFO] updating cached repository bfredl/gtknvim
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bfredl/gtknvim
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bfredl/gtknvim" "work/ex/clippy-test-run/sources/stable/gh/bfredl/gtknvim"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/bfredl/gtknvim'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bfredl/gtknvim" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bfredl/gtknvim"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bfredl/gtknvim'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e948263522d16aea8a3f0db4efaf385e7d0aa63f
[INFO] sha for GitHub repo bfredl/gtknvim: e948263522d16aea8a3f0db4efaf385e7d0aa63f
[INFO] validating manifest of bfredl/gtknvim 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 bfredl/gtknvim 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 bfredl/gtknvim
[INFO] finished frobbing bfredl/gtknvim
[INFO] frobbed toml for bfredl/gtknvim written to work/ex/clippy-test-run/sources/stable/gh/bfredl/gtknvim/Cargo.toml
[INFO] started frobbing bfredl/gtknvim
[INFO] finished frobbing bfredl/gtknvim
[INFO] frobbed toml for bfredl/gtknvim written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bfredl/gtknvim/Cargo.toml
[INFO] crate bfredl/gtknvim has a lockfile. skipping
[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 bfredl/gtknvim 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/gh/bfredl/gtknvim:/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] 1517a471bd46fdffd80f17fc26108e3e5db8491055334ad2914b4dcd1c160bb3
[INFO] running `"docker" "start" "-a" "1517a471bd46fdffd80f17fc26108e3e5db8491055334ad2914b4dcd1c160bb3"`
[INFO] [stderr]    Compiling gio v0.5.0
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.3
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.7
[INFO] [stderr]     Checking rmp v0.8.7
[INFO] [stderr]     Checking glib v0.6.0
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pin-utils-0.1.0-alpha.3/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(pin)]
[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 `pin-utils`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `std`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:194:9
[INFO] [stderr]     |
[INFO] [stderr] 194 |     use std::boxed::Box;
[INFO] [stderr]     |         ^^^ use of undeclared type or module `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `std`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:196:9
[INFO] [stderr]     |
[INFO] [stderr] 196 |     use std::boxed::Box;
[INFO] [stderr]     |         ^^^ use of undeclared type or module `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `std`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/mod.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 |     use std::boxed::Box;
[INFO] [stderr]     |         ^^^ use of undeclared type or module `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `std`
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/task/mod.rs:8:13
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub use std::task::{Wake, local_waker, local_waker_from_nonlocal};
[INFO] [stderr]   |             ^^^ use of undeclared type or module `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Box`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |             Box::into_raw(self) as *mut ()
[INFO] [stderr]     |             ^^^ use of undeclared type or module `Box`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Box`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:210:18
[INFO] [stderr]     |
[INFO] [stderr] 210 |             drop(Box::from_raw(ptr as *mut F))
[INFO] [stderr]     |                  ^^^ use of undeclared type or module `Box`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Box`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:233:18
[INFO] [stderr]     |
[INFO] [stderr] 233 |             drop(Box::from_raw(ptr as *mut Pin<Box<T>>));
[INFO] [stderr]     |                  ^^^ use of undeclared type or module `Box`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Box`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:202:13
[INFO] [stderr]     |
[INFO] [stderr] 202 |             Box::into_raw(self) as *mut ()
[INFO] [stderr]     |             ^^^ use of undeclared type or module `Box`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Box`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:212:18
[INFO] [stderr]     |
[INFO] [stderr] 212 |             drop(Box::from_raw(ptr as *mut F))
[INFO] [stderr]     |                  ^^^ use of undeclared type or module `Box`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `Box`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:230:18
[INFO] [stderr]     |
[INFO] [stderr] 230 |             drop(Box::from_raw(ptr as *mut F))
[INFO] [stderr]     |                  ^^^ use of undeclared type or module `Box`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `std` in `{{root}}`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/mod.rs:149:34
[INFO] [stderr]     |
[INFO] [stderr] 149 |     impl<S: Stream> Stream for ::std::panic::AssertUnwindSafe<S> {
[INFO] [stderr]     |                                  ^^^ could not find `std` in `{{root}}`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `std` in `{{root}}`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/mod.rs:160:33
[INFO] [stderr]     |
[INFO] [stderr] 160 |     impl<T: Unpin> Stream for ::std::collections::VecDeque<T> {
[INFO] [stderr]     |                                 ^^^ could not find `std` in `{{root}}`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:196:54
[INFO] [stderr]     |
[INFO] [stderr] 196 |     unsafe impl<'a, T, F> UnsafeFutureObj<'a, T> for Box<F>
[INFO] [stderr]     |                                                      ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:214:58
[INFO] [stderr]     |
[INFO] [stderr] 214 |     unsafe impl<'a, T, F> UnsafeFutureObj<'a, T> for Pin<Box<F>>
[INFO] [stderr]     |                                                          ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:233:48
[INFO] [stderr]     |
[INFO] [stderr] 233 |             drop(Box::from_raw(ptr as *mut Pin<Box<T>>));
[INFO] [stderr]     |                                                ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:237:59
[INFO] [stderr]     |
[INFO] [stderr] 237 |     impl<'a, F: Future<Output = ()> + Send + 'a> From<Pin<Box<F>>> for FutureObj<'a, ()> {
[INFO] [stderr]     |                                                           ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:238:28
[INFO] [stderr]     |
[INFO] [stderr] 238 |         fn from(boxed: Pin<Box<F>>) -> Self {
[INFO] [stderr]     |                            ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:243:55
[INFO] [stderr]     |
[INFO] [stderr] 243 |     impl<'a, F: Future<Output = ()> + Send + 'a> From<Box<F>> for FutureObj<'a, ()> {
[INFO] [stderr]     |                                                       ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:244:24
[INFO] [stderr]     |
[INFO] [stderr] 244 |         fn from(boxed: Box<F>) -> Self {
[INFO] [stderr]     |                        ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:249:52
[INFO] [stderr]     |
[INFO] [stderr] 249 |     impl<'a, F: Future<Output = ()> + 'a> From<Pin<Box<F>>> for LocalFutureObj<'a, ()> {
[INFO] [stderr]     |                                                    ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:250:28
[INFO] [stderr]     |
[INFO] [stderr] 250 |         fn from(boxed: Pin<Box<F>>) -> Self {
[INFO] [stderr]     |                            ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:255:48
[INFO] [stderr]     |
[INFO] [stderr] 255 |     impl<'a, F: Future<Output = ()> + 'a> From<Box<F>> for LocalFutureObj<'a, ()> {
[INFO] [stderr]     |                                                ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/future/future_obj.rs:256:24
[INFO] [stderr]     |
[INFO] [stderr] 256 |         fn from(boxed: Box<F>) -> Self {
[INFO] [stderr]     |                        ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:198:54
[INFO] [stderr]     |
[INFO] [stderr] 198 |     unsafe impl<'a, T, F> UnsafeStreamObj<'a, T> for Box<F>
[INFO] [stderr]     |                                                      ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:216:58
[INFO] [stderr]     |
[INFO] [stderr] 216 |     unsafe impl<'a, T, F> UnsafeStreamObj<'a, T> for Pin<Box<F>>
[INFO] [stderr]     |                                                          ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:234:57
[INFO] [stderr]     |
[INFO] [stderr] 234 |     impl<'a, F: Stream<Item = ()> + Send + 'a> From<Pin<Box<F>>> for StreamObj<'a, ()> {
[INFO] [stderr]     |                                                         ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:235:28
[INFO] [stderr]     |
[INFO] [stderr] 235 |         fn from(boxed: Pin<Box<F>>) -> Self {
[INFO] [stderr]     |                            ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:240:53
[INFO] [stderr]     |
[INFO] [stderr] 240 |     impl<'a, F: Stream<Item = ()> + Send + 'a> From<Box<F>> for StreamObj<'a, ()> {
[INFO] [stderr]     |                                                     ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:241:24
[INFO] [stderr]     |
[INFO] [stderr] 241 |         fn from(boxed: Box<F>) -> Self {
[INFO] [stderr]     |                        ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:246:50
[INFO] [stderr]     |
[INFO] [stderr] 246 |     impl<'a, F: Stream<Item = ()> + 'a> From<Pin<Box<F>>> for LocalStreamObj<'a, ()> {
[INFO] [stderr]     |                                                  ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:247:28
[INFO] [stderr]     |
[INFO] [stderr] 247 |         fn from(boxed: Pin<Box<F>>) -> Self {
[INFO] [stderr]     |                            ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:252:46
[INFO] [stderr]     |
[INFO] [stderr] 252 |     impl<'a, F: Stream<Item = ()> + 'a> From<Box<F>> for LocalStreamObj<'a, ()> {
[INFO] [stderr]     |                                              ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/stream_obj.rs:253:24
[INFO] [stderr]     |
[INFO] [stderr] 253 |         fn from(boxed: Box<F>) -> Self {
[INFO] [stderr]     |                        ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Box` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/stream/mod.rs:138:49
[INFO] [stderr]     |
[INFO] [stderr] 138 |     impl<S: ?Sized + Stream + Unpin> Stream for Box<S> {
[INFO] [stderr]     |                                                 ^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(pin, arbitrary_self_types, futures_api)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.7/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(tool_lints)] // to allow clippy lints
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 36 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors occurred: E0412, E0433, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `futures-core-preview`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "1517a471bd46fdffd80f17fc26108e3e5db8491055334ad2914b4dcd1c160bb3"`
[INFO] running `"docker" "rm" "-f" "1517a471bd46fdffd80f17fc26108e3e5db8491055334ad2914b4dcd1c160bb3"`
[INFO] [stdout] 1517a471bd46fdffd80f17fc26108e3e5db8491055334ad2914b4dcd1c160bb3