[INFO] crate howto 0.2.1 is already in cache [INFO] extracting crate howto 0.2.1 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/howto/0.2.1 [INFO] extracting crate howto 0.2.1 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/howto/0.2.1 [INFO] validating manifest of howto-0.2.1 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of howto-0.2.1 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing howto-0.2.1 [INFO] finished frobbing howto-0.2.1 [INFO] frobbed toml for howto-0.2.1 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/howto/0.2.1/Cargo.toml [INFO] started frobbing howto-0.2.1 [INFO] finished frobbing howto-0.2.1 [INFO] frobbed toml for howto-0.2.1 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/howto/0.2.1/Cargo.toml [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking howto-0.2.1 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914 [INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-2/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/howto/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] e696fb791102f85becb31763e971fa8f9ccabc3ffb3ed2d38e073dbd2f2d7cb8 [INFO] running `"docker" "start" "-a" "e696fb791102f85becb31763e971fa8f9ccabc3ffb3ed2d38e073dbd2f2d7cb8"` [INFO] [stderr] Compiling selectors v0.20.0 [INFO] [stderr] Checking cssparser v0.24.1 [INFO] [stderr] Checking hyper-tls v0.3.2 [INFO] [stderr] warning[E0506]: cannot assign to `self.input.cached_token` because it is borrowed [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cssparser-0.24.1/src/parser.rs:572:17 [INFO] [stderr] | [INFO] [stderr] 547 | pub fn next_including_whitespace_and_comments(&mut self) -> Result<&Token<'i>, BasicParseError<'i>> { [INFO] [stderr] | - let's call the lifetime of this reference `'1` [INFO] [stderr] ... [INFO] [stderr] 560 | Some(ref cached_token) [INFO] [stderr] | ---------------- borrow of `self.input.cached_token` occurs here [INFO] [stderr] ... [INFO] [stderr] 572 | self.input.cached_token = Some(CachedToken { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.input.cached_token` occurs here [INFO] [stderr] ... [INFO] [stderr] 584 | Ok(token) [INFO] [stderr] | --------- returning this value requires that `self.input.cached_token.0` is borrowed for `'1` [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] [INFO] [stderr] Checking reqwest v0.9.17 [INFO] [stderr] Checking scraper v0.9.2 [INFO] [stderr] Checking howto v0.2.1 (/opt/crater/workdir) [INFO] [stderr] error[E0275]: overflow evaluating the requirement `slab::Slab>: std::marker::Send` [INFO] [stderr] --> src/lib.rs:149:9 [INFO] [stderr] | [INFO] [stderr] 149 | tokio::run(answers_future); [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider adding a `#![recursion_limit="128"]` attribute to your crate [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::buffer::Buffer` [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::recv::Recv` [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::streams::Actions` [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::streams::Inner` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Mutex` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Arc>` [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::streams::OpaqueStreamRef` [INFO] [stderr] = note: required because it appears within the type `h2::share::ReleaseCapacity` [INFO] [stderr] = note: required because it appears within the type `h2::share::RecvStream` [INFO] [stderr] = note: required because it appears within the type `hyper::body::body::Kind` [INFO] [stderr] = note: required because it appears within the type `hyper::body::body::Body` [INFO] [stderr] = note: required because it appears within the type `http::request::Request` [INFO] [stderr] = note: required because it appears within the type `(http::request::Request, hyper::client::dispatch::Callback, http::response::Response>)` [INFO] [stderr] = note: required because it appears within the type `std::option::Option<(http::request::Request, hyper::client::dispatch::Callback, http::response::Response>)>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::dispatch::Envelope, http::response::Response>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `futures::sync::mpsc::Inner, http::response::Response>>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Arc, http::response::Response>>>` [INFO] [stderr] = note: required because it appears within the type `futures::sync::mpsc::Sender, http::response::Response>>` [INFO] [stderr] = note: required because it appears within the type `futures::sync::mpsc::UnboundedSender, http::response::Response>>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::dispatch::Sender, http::response::Response>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::conn::SendRequest` [INFO] [stderr] = note: required because it appears within the type `hyper::client::PoolTx` [INFO] [stderr] = note: required because it appears within the type `hyper::client::PoolClient` [INFO] [stderr] = note: required because it appears within the type `hyper::client::pool::Idle>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::ptr::Unique>>` [INFO] [stderr] = note: required because it appears within the type `alloc::raw_vec::RawVec>>` [INFO] [stderr] = note: required because it appears within the type `std::vec::Vec>>` [INFO] [stderr] = note: required because it appears within the type `(std::sync::Arc, std::vec::Vec>>)` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `hashbrown::raw::RawTable<(std::sync::Arc, std::vec::Vec>>)>` [INFO] [stderr] = note: required because it appears within the type `hashbrown::map::HashMap, std::vec::Vec>>, std::collections::hash_map::RandomState>` [INFO] [stderr] = note: required because it appears within the type `std::collections::HashMap, std::vec::Vec>>>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::pool::PoolInner>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Mutex>>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Arc>>>` [INFO] [stderr] = note: required because it appears within the type `std::option::Option>>>>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::pool::Pool>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::Client` [INFO] [stderr] = note: required because it appears within the type `reqwest::async_impl::client::ClientRef` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Arc` [INFO] [stderr] = note: required because it appears within the type `reqwest::async_impl::client::PendingRequest` [INFO] [stderr] = note: required because it appears within the type `reqwest::async_impl::client::PendingInner` [INFO] [stderr] = note: required because it appears within the type `reqwest::async_impl::client::Pending` [INFO] [stderr] = note: required because it appears within the type `impl futures::future::Future` [INFO] [stderr] = note: required because it appears within the type `futures::future::map_err::MapErr failure::error::Error {>::into}>` [INFO] [stderr] = note: required because it appears within the type `futures::future::chain::Chain failure::error::Error {>::into}>, futures::future::map::Map, fn(reqwest::error::Error) -> failure::error::Error {>::into}>, [closure@src/lib.rs:47:60: 50:10]>, [closure@src/lib.rs:46:46: 51:6]>` [INFO] [stderr] = note: required because it appears within the type `futures::future::and_then::AndThen failure::error::Error {>::into}>, futures::future::map::Map, fn(reqwest::error::Error) -> failure::error::Error {>::into}>, [closure@src/lib.rs:47:60: 50:10]>, [closure@src/lib.rs:46:46: 51:6]>` [INFO] [stderr] = note: required because it appears within the type `impl futures::future::Future` [INFO] [stderr] = note: required because it appears within the type `futures::future::map::Map` [INFO] [stderr] = note: required because it appears within the type `futures::future::map::Map, [closure@src/lib.rs:96:14: 126:10 link:std::string::String]>` [INFO] [stderr] = note: required because it appears within the type `futures::future::map_err::MapErr, [closure@src/lib.rs:96:14: 126:10 link:std::string::String]>, [closure@src/lib.rs:127:18: 127:79 link1:std::string::String]>` [INFO] [stderr] = note: required because it appears within the type `impl futures::future::Future` [INFO] [stderr] = note: required because it appears within the type `futures::stream::futures_ordered::OrderWrapper` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `futures::stream::futures_unordered::FuturesUnordered>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::futures_ordered::FuturesOrdered` [INFO] [stderr] = note: required because it appears within the type `futures::future::flatten_stream::State>` [INFO] [stderr] = note: required because it appears within the type `futures::future::flatten_stream::FlattenStream>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::filter_map::FilterMap>, [closure@src/lib.rs:141:21: 141:26]>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::then::Then>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::fuse::Fuse>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>>` [INFO] [stderr] = note: required because it appears within the type `std::option::Option>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>>>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::forward::Forward>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>, futures::sync::mpsc::Sender>>` [INFO] [stderr] = note: required because it appears within the type `futures::future::chain::Chain>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>, futures::sync::mpsc::Sender>>, futures::future::result_::FutureResult<(), ()>, [closure@src/lib.rs:146:15: 146:25]>` [INFO] [stderr] = note: required because it appears within the type `futures::future::then::Then>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>, futures::sync::mpsc::Sender>>, futures::future::result_::FutureResult<(), ()>, [closure@src/lib.rs:146:15: 146:25]>` [INFO] [stderr] = note: required by `tokio::runtime::threadpool::run` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0275`. [INFO] [stderr] error: Could not compile `howto`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error[E0275]: overflow evaluating the requirement `slab::Slab>: std::marker::Send` [INFO] [stderr] --> src/lib.rs:149:9 [INFO] [stderr] | [INFO] [stderr] 149 | tokio::run(answers_future); [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider adding a `#![recursion_limit="128"]` attribute to your crate [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::buffer::Buffer` [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::recv::Recv` [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::streams::Actions` [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::streams::Inner` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Mutex` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Arc>` [INFO] [stderr] = note: required because it appears within the type `h2::proto::streams::streams::OpaqueStreamRef` [INFO] [stderr] = note: required because it appears within the type `h2::share::ReleaseCapacity` [INFO] [stderr] = note: required because it appears within the type `h2::share::RecvStream` [INFO] [stderr] = note: required because it appears within the type `hyper::body::body::Kind` [INFO] [stderr] = note: required because it appears within the type `hyper::body::body::Body` [INFO] [stderr] = note: required because it appears within the type `http::request::Request` [INFO] [stderr] = note: required because it appears within the type `(http::request::Request, hyper::client::dispatch::Callback, http::response::Response>)` [INFO] [stderr] = note: required because it appears within the type `std::option::Option<(http::request::Request, hyper::client::dispatch::Callback, http::response::Response>)>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::dispatch::Envelope, http::response::Response>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `futures::sync::mpsc::Inner, http::response::Response>>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Arc, http::response::Response>>>` [INFO] [stderr] = note: required because it appears within the type `futures::sync::mpsc::Sender, http::response::Response>>` [INFO] [stderr] = note: required because it appears within the type `futures::sync::mpsc::UnboundedSender, http::response::Response>>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::dispatch::Sender, http::response::Response>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::conn::SendRequest` [INFO] [stderr] = note: required because it appears within the type `hyper::client::PoolTx` [INFO] [stderr] = note: required because it appears within the type `hyper::client::PoolClient` [INFO] [stderr] = note: required because it appears within the type `hyper::client::pool::Idle>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::ptr::Unique>>` [INFO] [stderr] = note: required because it appears within the type `alloc::raw_vec::RawVec>>` [INFO] [stderr] = note: required because it appears within the type `std::vec::Vec>>` [INFO] [stderr] = note: required because it appears within the type `(std::sync::Arc, std::vec::Vec>>)` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `hashbrown::raw::RawTable<(std::sync::Arc, std::vec::Vec>>)>` [INFO] [stderr] = note: required because it appears within the type `hashbrown::map::HashMap, std::vec::Vec>>, std::collections::hash_map::RandomState>` [INFO] [stderr] = note: required because it appears within the type `std::collections::HashMap, std::vec::Vec>>>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::pool::PoolInner>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Mutex>>` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Arc>>>` [INFO] [stderr] = note: required because it appears within the type `std::option::Option>>>>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::pool::Pool>` [INFO] [stderr] = note: required because it appears within the type `hyper::client::Client` [INFO] [stderr] = note: required because it appears within the type `reqwest::async_impl::client::ClientRef` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `std::sync::Arc` [INFO] [stderr] = note: required because it appears within the type `reqwest::async_impl::client::PendingRequest` [INFO] [stderr] = note: required because it appears within the type `reqwest::async_impl::client::PendingInner` [INFO] [stderr] = note: required because it appears within the type `reqwest::async_impl::client::Pending` [INFO] [stderr] = note: required because it appears within the type `impl futures::future::Future` [INFO] [stderr] = note: required because it appears within the type `futures::future::map_err::MapErr failure::error::Error {>::into}>` [INFO] [stderr] = note: required because it appears within the type `futures::future::chain::Chain failure::error::Error {>::into}>, futures::future::map::Map, fn(reqwest::error::Error) -> failure::error::Error {>::into}>, [closure@src/lib.rs:47:60: 50:10]>, [closure@src/lib.rs:46:46: 51:6]>` [INFO] [stderr] = note: required because it appears within the type `futures::future::and_then::AndThen failure::error::Error {>::into}>, futures::future::map::Map, fn(reqwest::error::Error) -> failure::error::Error {>::into}>, [closure@src/lib.rs:47:60: 50:10]>, [closure@src/lib.rs:46:46: 51:6]>` [INFO] [stderr] = note: required because it appears within the type `impl futures::future::Future` [INFO] [stderr] = note: required because it appears within the type `futures::future::map::Map` [INFO] [stderr] = note: required because it appears within the type `futures::future::map::Map, [closure@src/lib.rs:96:14: 126:10 link:std::string::String]>` [INFO] [stderr] = note: required because it appears within the type `futures::future::map_err::MapErr, [closure@src/lib.rs:96:14: 126:10 link:std::string::String]>, [closure@src/lib.rs:127:18: 127:79 link1:std::string::String]>` [INFO] [stderr] = note: required because it appears within the type `impl futures::future::Future` [INFO] [stderr] = note: required because it appears within the type `futures::stream::futures_ordered::OrderWrapper` [INFO] [stderr] = note: required because of the requirements on the impl of `std::marker::Send` for `futures::stream::futures_unordered::FuturesUnordered>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::futures_ordered::FuturesOrdered` [INFO] [stderr] = note: required because it appears within the type `futures::future::flatten_stream::State>` [INFO] [stderr] = note: required because it appears within the type `futures::future::flatten_stream::FlattenStream>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::filter_map::FilterMap>, [closure@src/lib.rs:141:21: 141:26]>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::then::Then>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::fuse::Fuse>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>>` [INFO] [stderr] = note: required because it appears within the type `std::option::Option>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>>>` [INFO] [stderr] = note: required because it appears within the type `futures::stream::forward::Forward>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>, futures::sync::mpsc::Sender>>` [INFO] [stderr] = note: required because it appears within the type `futures::future::chain::Chain>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>, futures::sync::mpsc::Sender>>, futures::future::result_::FutureResult<(), ()>, [closure@src/lib.rs:146:15: 146:25]>` [INFO] [stderr] = note: required because it appears within the type `futures::future::then::Then>, [closure@src/lib.rs:141:21: 141:26]>, fn(std::result::Result) -> futures::future::result_::FutureResult, failure::error::Error> {futures::future::result_::ok::, failure::error::Error>}, futures::future::result_::FutureResult, failure::error::Error>>, futures::sync::mpsc::Sender>>, futures::future::result_::FutureResult<(), ()>, [closure@src/lib.rs:146:15: 146:25]>` [INFO] [stderr] = note: required by `tokio::runtime::threadpool::run` [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0275`. [INFO] [stderr] error: Could not compile `howto`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "e696fb791102f85becb31763e971fa8f9ccabc3ffb3ed2d38e073dbd2f2d7cb8"` [INFO] running `"docker" "rm" "-f" "e696fb791102f85becb31763e971fa8f9ccabc3ffb3ed2d38e073dbd2f2d7cb8"` [INFO] [stdout] e696fb791102f85becb31763e971fa8f9ccabc3ffb3ed2d38e073dbd2f2d7cb8