[INFO] updating cached repository twissel/scrapper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/twissel/scrapper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/twissel/scrapper" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/twissel/scrapper"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/twissel/scrapper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/twissel/scrapper" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/twissel/scrapper"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/twissel/scrapper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 442de283039631bc9c16f63f85685f8f83450fc1
[INFO] sha for GitHub repo twissel/scrapper: 442de283039631bc9c16f63f85685f8f83450fc1
[INFO] validating manifest of twissel/scrapper on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of twissel/scrapper on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing twissel/scrapper
[INFO] finished frobbing twissel/scrapper
[INFO] frobbed toml for twissel/scrapper written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/twissel/scrapper/Cargo.toml
[INFO] started frobbing twissel/scrapper
[INFO] finished frobbing twissel/scrapper
[INFO] frobbed toml for twissel/scrapper written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/twissel/scrapper/Cargo.toml
[INFO] crate twissel/scrapper already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking twissel/scrapper against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/twissel/scrapper:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 408a3a897375ce118e9702c2fc40f585267c85271c0f4314727c876d7ffadb78
[INFO] running `"docker" "start" "-a" "408a3a897375ce118e9702c2fc40f585267c85271c0f4314727c876d7ffadb78"`
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[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/crawler.rs:31:35
[INFO] [stderr]    |
[INFO] [stderr] 31 |     parsing: FuturesUnordered<Box<Future<Item = ParseStream<S::Item>, Error = Error>>>,
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ParseStream<S::Item>, Error = Error>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/crawler.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |         fut: Box<Future<Item = ParseStream<S::Item>, Error = Error> + Send>,
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ParseStream<S::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/crawler.rs:46:14
[INFO] [stderr]    |
[INFO] [stderr] 46 |     ) -> Box<Future<Item = ParseStream<S::Item>, Error = Error> + Send> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ParseStream<S::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sheduler.rs:74:37
[INFO] [stderr]    |
[INFO] [stderr] 74 |     executing: FuturesUnordered<Box<Future<Item = Response, Error = Error>>>,
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Response, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:13:30
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type RequestStream = Box<Stream<Item = Result<Request, Error>, Error = Error>>;
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Result<Request, Error>, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type ParseStream<T> = Box<Stream<Item = Result<Parse<T>, Error>, Error = Error> + Send>;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Result<Parse<T>, Error>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:15:30
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub type ItemStream<T> = Box<Stream<Item = T, Error = !>>;
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = T, Error = !>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:16:38
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub type InternalRequestStream = Box<Stream<Item = Request, Error = !>>;
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Request, Error = !>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn start(&mut self) -> Box<Future<Item = RequestStream, Error = Error>>;
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = RequestStream, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:30:14
[INFO] [stderr]    |
[INFO] [stderr] 30 |     ) -> Box<Future<Item = ParseStream<Self::Item>, Error = Error> + Send>;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ParseStream<Self::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 | ) -> Box<Stream<Item = T, Error = SE>>
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = T, Error = SE>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils.rs:32:37
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Box::new(stream) as Box<Stream<Item = T, Error = SE>>
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = T, Error = SE>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:77:32
[INFO] [stderr]    |
[INFO] [stderr] 77 |     fn start(&mut self) -> Box<Future<Item = spider::RequestStream, Error = Error>> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = spider::RequestStream, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:98:14
[INFO] [stderr]    |
[INFO] [stderr] 98 |     ) -> Box<Future<Item = spider::ParseStream<Self::Item>, Error = Error> + Send> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = spider::ParseStream<Self::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:139:32
[INFO] [stderr]     |
[INFO] [stderr] 139 |     fn start(&mut self) -> Box<Future<Item = spider::RequestStream, Error = Error>> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = spider::RequestStream, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:176:14
[INFO] [stderr]     |
[INFO] [stderr] 176 |     ) -> Box<Future<Item = spider::ParseStream<Self::Item>, Error = Error> + Send> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = spider::ParseStream<Self::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/crawler.rs:31:35
[INFO] [stderr]    |
[INFO] [stderr] 31 |     parsing: FuturesUnordered<Box<Future<Item = ParseStream<S::Item>, Error = Error>>>,
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ParseStream<S::Item>, Error = Error>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/crawler.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |         fut: Box<Future<Item = ParseStream<S::Item>, Error = Error> + Send>,
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ParseStream<S::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/crawler.rs:46:14
[INFO] [stderr]    |
[INFO] [stderr] 46 |     ) -> Box<Future<Item = ParseStream<S::Item>, Error = Error> + Send> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ParseStream<S::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sheduler.rs:74:37
[INFO] [stderr]    |
[INFO] [stderr] 74 |     executing: FuturesUnordered<Box<Future<Item = Response, Error = Error>>>,
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = Response, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:13:30
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub type RequestStream = Box<Stream<Item = Result<Request, Error>, Error = Error>>;
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Result<Request, Error>, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type ParseStream<T> = Box<Stream<Item = Result<Parse<T>, Error>, Error = Error> + Send>;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Result<Parse<T>, Error>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:15:30
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub type ItemStream<T> = Box<Stream<Item = T, Error = !>>;
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = T, Error = !>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:16:38
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub type InternalRequestStream = Box<Stream<Item = Request, Error = !>>;
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = Request, Error = !>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn start(&mut self) -> Box<Future<Item = RequestStream, Error = Error>>;
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = RequestStream, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spider.rs:30:14
[INFO] [stderr]    |
[INFO] [stderr] 30 |     ) -> Box<Future<Item = ParseStream<Self::Item>, Error = Error> + Send>;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = ParseStream<Self::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 | ) -> Box<Stream<Item = T, Error = SE>>
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = T, Error = SE>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/utils.rs:32:37
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Box::new(stream) as Box<Stream<Item = T, Error = SE>>
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Stream<Item = T, Error = SE>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:77:32
[INFO] [stderr]    |
[INFO] [stderr] 77 |     fn start(&mut self) -> Box<Future<Item = spider::RequestStream, Error = Error>> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = spider::RequestStream, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:98:14
[INFO] [stderr]    |
[INFO] [stderr] 98 |     ) -> Box<Future<Item = spider::ParseStream<Self::Item>, Error = Error> + Send> {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = spider::ParseStream<Self::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:139:32
[INFO] [stderr]     |
[INFO] [stderr] 139 |     fn start(&mut self) -> Box<Future<Item = spider::RequestStream, Error = Error>> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = spider::RequestStream, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:176:14
[INFO] [stderr]     |
[INFO] [stderr] 176 |     ) -> Box<Future<Item = spider::ParseStream<Self::Item>, Error = Error> + Send> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = spider::ParseStream<Self::Item>, Error = Error> + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/crawler.rs:95:17
[INFO] [stderr]    |
[INFO] [stderr] 95 |             let mut new_items = new_items.map(|item| match item {
[INFO] [stderr]    |                 ----^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/crawler.rs:95:17
[INFO] [stderr]    |
[INFO] [stderr] 95 |             let mut new_items = new_items.map(|item| match item {
[INFO] [stderr]    |                 ----^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SameThread`
[INFO] [stderr]    --> src/crawler.rs:191:5
[INFO] [stderr]     |
[INFO] [stderr] 191 |     SameThread,
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/fork.rs:91:21
[INFO] [stderr]    |
[INFO] [stderr] 91 | type ProngQueque<S: Stream> = VecDeque<Result<Option<S::Item>, S::Error>>;
[INFO] [stderr]    |                     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr] help: use fully disambiguated paths (i.e., `<T as Trait>::Assoc`) to refer to associated types in type aliases
[INFO] [stderr]   --> src/fork.rs:91:54
[INFO] [stderr]    |
[INFO] [stderr] 91 | type ProngQueque<S: Stream> = VecDeque<Result<Option<S::Item>, S::Error>>;
[INFO] [stderr]    |                                                      ^^^^^^^
[INFO] [stderr] help: use fully disambiguated paths (i.e., `<T as Trait>::Assoc`) to refer to associated types in type aliases
[INFO] [stderr]   --> src/fork.rs:91:64
[INFO] [stderr]    |
[INFO] [stderr] 91 | type ProngQueque<S: Stream> = VecDeque<Result<Option<S::Item>, S::Error>>;
[INFO] [stderr]    |                                                                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SameThread`
[INFO] [stderr]    --> src/crawler.rs:191:5
[INFO] [stderr]     |
[INFO] [stderr] 191 |     SameThread,
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/fork.rs:91:21
[INFO] [stderr]    |
[INFO] [stderr] 91 | type ProngQueque<S: Stream> = VecDeque<Result<Option<S::Item>, S::Error>>;
[INFO] [stderr]    |                     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr] help: use fully disambiguated paths (i.e., `<T as Trait>::Assoc`) to refer to associated types in type aliases
[INFO] [stderr]   --> src/fork.rs:91:54
[INFO] [stderr]    |
[INFO] [stderr] 91 | type ProngQueque<S: Stream> = VecDeque<Result<Option<S::Item>, S::Error>>;
[INFO] [stderr]    |                                                      ^^^^^^^
[INFO] [stderr] help: use fully disambiguated paths (i.e., `<T as Trait>::Assoc`) to refer to associated types in type aliases
[INFO] [stderr]   --> src/fork.rs:91:64
[INFO] [stderr]    |
[INFO] [stderr] 91 | type ProngQueque<S: Stream> = VecDeque<Result<Option<S::Item>, S::Error>>;
[INFO] [stderr]    |                                                                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `"docker" "inspect" "408a3a897375ce118e9702c2fc40f585267c85271c0f4314727c876d7ffadb78"`
[INFO] running `"docker" "rm" "-f" "408a3a897375ce118e9702c2fc40f585267c85271c0f4314727c876d7ffadb78"`
[INFO] [stdout] 408a3a897375ce118e9702c2fc40f585267c85271c0f4314727c876d7ffadb78