[INFO] fetching crate bitconch-jsonrpc-http-server 0.1.0...
[INFO] checking bitconch-jsonrpc-http-server-0.1.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate bitconch-jsonrpc-http-server 0.1.0 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate bitconch-jsonrpc-http-server 0.1.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitconch-jsonrpc-http-server 0.1.0
[INFO] finished tweaking crates.io crate bitconch-jsonrpc-http-server 0.1.0
[INFO] tweaked toml for crates.io crate bitconch-jsonrpc-http-server 0.1.0 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
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[INFO] [stdout] 18f96b76c3efc60e2b5b28a979fcab818321049c476615448ce01fcae64c9b34
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[INFO] running `Command { std: "docker" "inspect" "18f96b76c3efc60e2b5b28a979fcab818321049c476615448ce01fcae64c9b34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18f96b76c3efc60e2b5b28a979fcab818321049c476615448ce01fcae64c9b34", kill_on_drop: false }`
[INFO] [stdout] 18f96b76c3efc60e2b5b28a979fcab818321049c476615448ce01fcae64c9b34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] baf16c7f4a94b0aa3fc8f6e3fa7ec0650802f8330298b8a00e9209f6f2a9af8b
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[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     middleware: Arc<RequestMiddleware>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RequestMiddleware`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 |         middleware: Arc<RequestMiddleware>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RequestMiddleware`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/handler.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |     Middleware(Box<Future<Item = hyper::Response<Body>, Error = hyper::Error> + Send>),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = hyper::Response<Body>, Error = hyper::Error> + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]   --> src/tests.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | use super::*;
[INFO] [stdout]    |     -------- the item `thread` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 57 |     use std::{thread, time};
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |         response: Box<Future<Item=hyper::Response<Body>, Error=hyper::Error> + Send>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=hyper::Response<Body>, Error=hyper::Error> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:160:21
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub extractor: Arc<MetaExtractor<M>>,
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MetaExtractor<M>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:197:22
[INFO] [stdout]     |
[INFO] [stdout] 197 |     meta_extractor: Arc<MetaExtractor<M>>,
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MetaExtractor<M>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:198:26
[INFO] [stdout]     |
[INFO] [stdout] 198 |     request_middleware: Arc<RequestMiddleware>,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RequestMiddleware`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:426:27
[INFO] [stdout]     |
[INFO] [stdout] 426 |         }).collect::<io::Result<(Vec<_>)>>()?;
[INFO] [stdout]     |                                 ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:451:26
[INFO] [stdout]     |
[INFO] [stdout] 451 |     request_middleware: Arc<RequestMiddleware>,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RequestMiddleware`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:541:3
[INFO] [stdout]     |
[INFO] [stdout] 541 |         try!(tcp.reuse_port(true));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     middleware: Arc<RequestMiddleware>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RequestMiddleware`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/handler.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 |         middleware: Arc<RequestMiddleware>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RequestMiddleware`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/handler.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |     Middleware(Box<Future<Item = hyper::Response<Body>, Error = hyper::Error> + Send>),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = hyper::Response<Body>, Error = hyper::Error> + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |         response: Box<Future<Item=hyper::Response<Body>, Error=hyper::Error> + Send>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=hyper::Response<Body>, Error=hyper::Error> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:160:21
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub extractor: Arc<MetaExtractor<M>>,
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MetaExtractor<M>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:197:22
[INFO] [stdout]     |
[INFO] [stdout] 197 |     meta_extractor: Arc<MetaExtractor<M>>,
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MetaExtractor<M>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:198:26
[INFO] [stdout]     |
[INFO] [stdout] 198 |     request_middleware: Arc<RequestMiddleware>,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RequestMiddleware`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:426:27
[INFO] [stdout]     |
[INFO] [stdout] 426 |         }).collect::<io::Result<(Vec<_>)>>()?;
[INFO] [stdout]     |                                 ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:451:26
[INFO] [stdout]     |
[INFO] [stdout] 451 |     request_middleware: Arc<RequestMiddleware>,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RequestMiddleware`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:541:3
[INFO] [stdout]     |
[INFO] [stdout] 541 |         try!(tcp.reuse_port(true));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous associated item
[INFO] [stdout]    --> src/handler.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^ help: use fully-qualified syntax: `<Handler<M, S> as Future>::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ambiguous_associated_items)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stdout] note: `Error` could refer to the variant defined here
[INFO] [stdout]    --> src/handler.rs:108:2
[INFO] [stdout]     |
[INFO] [stdout] 108 |     Error(Option<Response>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `Error` could also refer to the associated type defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.31/src/future/mod.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 |     type Error;
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous associated item
[INFO] [stdout]    --> src/handler.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^ help: use fully-qualified syntax: `<Handler<M, S> as Future>::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ambiguous_associated_items)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stdout] note: `Error` could refer to the variant defined here
[INFO] [stdout]    --> src/handler.rs:108:2
[INFO] [stdout]     |
[INFO] [stdout] 108 |     Error(Option<Response>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `Error` could also refer to the associated type defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.31/src/future/mod.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 |     type Error;
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `server_utils::tokio::reactor::Handle::current`: semantics were sometimes surprising, use Handle::default()
[INFO] [stdout]    --> src/lib.rs:462:40
[INFO] [stdout]     |
[INFO] [stdout] 462 |         let handle = tokio::reactor::Handle::current();
[INFO] [stdout]     |                                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `server_utils::tokio::reactor::Handle::current`: semantics were sometimes surprising, use Handle::default()
[INFO] [stdout]    --> src/lib.rs:462:40
[INFO] [stdout]     |
[INFO] [stdout] 462 |         let handle = tokio::reactor::Handle::current();
[INFO] [stdout]     |                                              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous associated item
[INFO] [stdout]    --> src/handler.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^ help: use fully-qualified syntax: `<Handler<M, S> as Future>::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stdout] note: `Error` could refer to the variant defined here
[INFO] [stdout]    --> src/handler.rs:108:2
[INFO] [stdout]     |
[INFO] [stdout] 108 |     Error(Option<Response>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `Error` could also refer to the associated type defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.31/src/future/mod.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 |     type Error;
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous associated item
[INFO] [stdout]    --> src/handler.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
[INFO] [stdout]     |                                            ^^^^^^^^^^^ help: use fully-qualified syntax: `<Handler<M, S> as Future>::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stdout] note: `Error` could refer to the variant defined here
[INFO] [stdout]    --> src/handler.rs:108:2
[INFO] [stdout]     |
[INFO] [stdout] 108 |     Error(Option<Response>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `Error` could also refer to the associated type defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.31/src/future/mod.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 |     type Error;
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.06s
[INFO] running `Command { std: "docker" "inspect" "baf16c7f4a94b0aa3fc8f6e3fa7ec0650802f8330298b8a00e9209f6f2a9af8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baf16c7f4a94b0aa3fc8f6e3fa7ec0650802f8330298b8a00e9209f6f2a9af8b", kill_on_drop: false }`
[INFO] [stdout] baf16c7f4a94b0aa3fc8f6e3fa7ec0650802f8330298b8a00e9209f6f2a9af8b
