[INFO] cloning repository https://github.com/sabahtalateh/hello_async
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sabahtalateh/hello_async" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cedd7306a8da53fcd0028f9ab8c98329d5003219
[INFO] checking sabahtalateh/hello_async against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabahtalateh%2Fhello_async" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sabahtalateh/hello_async on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sabahtalateh/hello_async
[INFO] finished tweaking git repo https://github.com/sabahtalateh/hello_async
[INFO] tweaked toml for git repo https://github.com/sabahtalateh/hello_async written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/sabahtalateh/hello_async already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5f2259aaebdfbd8dfc6c96540eb139e6c4afe1de2770d68ed1a935cd17c4760
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c5f2259aaebdfbd8dfc6c96540eb139e6c4afe1de2770d68ed1a935cd17c4760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5f2259aaebdfbd8dfc6c96540eb139e6c4afe1de2770d68ed1a935cd17c4760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5f2259aaebdfbd8dfc6c96540eb139e6c4afe1de2770d68ed1a935cd17c4760", kill_on_drop: false }`
[INFO] [stdout] c5f2259aaebdfbd8dfc6c96540eb139e6c4afe1de2770d68ed1a935cd17c4760
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 080b446a13c8f5d1289798c4eb1b3b818015c8dd12058d66525193e4b497cbfe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "080b446a13c8f5d1289798c4eb1b3b818015c8dd12058d66525193e4b497cbfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
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[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking getrandom v0.1.8
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking hello_async v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/bin/tokio_functional.rs:72:61
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn with_future<F: Future<Item = String, Error = io::Error>>(f: F) {}
[INFO] [stdout]    |                                                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `yielded`
[INFO] [stdout]   --> src/bin/tokio_stream_fib.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let yielded = curr;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yielded`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/tokio_io_read8.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut buf = vec![0; 8];
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/tokio_spawn.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             tx.send("hello from spawned task");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/tokio_functional.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         get_data().and_then(|data| {
[INFO] [stdout] 17 | |             dst.push(data);
[INFO] [stdout] 18 | |             Ok(())
[INFO] [stdout] 19 | |         });
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/tokio_spawn_cout_bytes_read.rs:88:57
[INFO] [stdout]    |
[INFO] [stdout] 88 | ...                   tx.send(buf.len()).map_err(|e| io::ErrorKind::Other.into())
[INFO] [stdout]    |                                                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/tokio_read_timeout.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     ;
[INFO] [stdout]    |     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/bin/mutex.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/bin/mutex.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 | use futures::{future, Future, Sink, Stream};
[INFO] [stdout]    |                                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:14:27
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/tokio_io_read8.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut buf = vec![0; 8];
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<futures::sink::Send<tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>> as futures::Future>::Item == (Duration, tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>)`
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:52:6
[INFO] [stdout]    |
[INFO] [stdout] 52 | ) -> impl Future<Item = (Duration, mpsc::Sender<Message>), Error = ()> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `tokio::sync::mpsc::Sender`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type `tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>`
[INFO] [stdout]              found tuple `(Duration, tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>)`
[INFO] [stdout]    = note: the return type of a function must have a statically known size
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<futures::sink::Send<tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>> as futures::Future>::Error == ()`
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:52:6
[INFO] [stdout]    |
[INFO] [stdout] 52 | ) -> impl Future<Item = (Duration, mpsc::Sender<Message>), Error = ()> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `tokio::sync::mpsc::error::SendError`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the return type of a function must have a statically known size
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<futures::Lazy<[closure@src/bin/tokio_ping_pong.rs:87:31: 87:41 tx:_], impl futures::Future> as futures::Future>::Item == ()`
[INFO] [stdout]    --> src/bin/tokio_ping_pong.rs:87:13
[INFO] [stdout]     |
[INFO] [stdout] 87  |             tokio::spawn(lazy(|| rtt(tx)))
[INFO] [stdout]     |             ^^^^^^^^^^^^ expected `()`, found tuple
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-0.1.22/src/executor/mod.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 | where F: Future<Item = (), Error = ()> + 'static + Send
[INFO] [stdout]     |                 --------- required by this bound in `tokio::spawn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected unit type `()`
[INFO] [stdout]                    found tuple `(Duration, tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `future`
[INFO] [stdout]   --> src/bin/tokio_ping_pong_2.rs:46:15
[INFO] [stdout]    |
[INFO] [stdout] 46 | use futures::{future, Future, Sink, Stream};
[INFO] [stdout]    |               ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `yielded`
[INFO] [stdout]   --> src/bin/tokio_stream_fib.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let yielded = curr;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_yielded`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 | use futures::{future, Future, Sink, Stream};
[INFO] [stdout]    |                                     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:14:27
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `struct_lines_codec`
[INFO] [stdout]  --> src/bin/struct_lines_codec.rs:1:2
[INFO] [stdout]   |
[INFO] [stdout] 1 | 
[INFO] [stdout]   |  ^ consider adding a `main` function to `src/bin/struct_lines_codec.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_async`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 1 field
[INFO] [stdout]    --> src/bin/tokio_echo.rs:33:21
[INFO] [stdout]     |
[INFO] [stdout] 33  |                     Ok(amount, _, _) => println!("wrote {} bytes", amount),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^ expected 1 field, found 3
[INFO] [stdout]     |
[INFO] [stdout] help: missing parenthesis
[INFO] [stdout]     |
[INFO] [stdout] 33  |                     Ok((amount, _, _)) => println!("wrote {} bytes", amount),
[INFO] [stdout]     |                        ^            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0023`.
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<futures::sink::Send<tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>> as futures::Future>::Item == (Duration, tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>)`
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:52:6
[INFO] [stdout]    |
[INFO] [stdout] 52 | ) -> impl Future<Item = (Duration, mpsc::Sender<Message>), Error = ()> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `tokio::sync::mpsc::Sender`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type `tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>`
[INFO] [stdout]              found tuple `(Duration, tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>)`
[INFO] [stdout]    = note: the return type of a function must have a statically known size
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<futures::sink::Send<tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>> as futures::Future>::Error == ()`
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:52:6
[INFO] [stdout]    |
[INFO] [stdout] 52 | ) -> impl Future<Item = (Duration, mpsc::Sender<Message>), Error = ()> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `tokio::sync::mpsc::error::SendError`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the return type of a function must have a statically known size
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             tokio::spawn(lazy(|| rtt(tx)))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- help: try adding a semicolon: `;`
[INFO] [stdout]    |             |
[INFO] [stdout]    |             expected `()`, found struct `tokio::executor::Spawn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<futures::Lazy<[closure@src/bin/tokio_ping_pong.rs:87:31: 87:41 tx:_], impl futures::Future> as futures::Future>::Item == ()`
[INFO] [stdout]    --> src/bin/tokio_ping_pong.rs:87:13
[INFO] [stdout]     |
[INFO] [stdout] 87  |             tokio::spawn(lazy(|| rtt(tx)))
[INFO] [stdout]     |             ^^^^^^^^^^^^ expected `()`, found tuple
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-0.1.22/src/executor/mod.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 | where F: Future<Item = (), Error = ()> + 'static + Send
[INFO] [stdout]     |                 --------- required by this bound in `tokio::spawn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected unit type `()`
[INFO] [stdout]                    found tuple `(Duration, tokio::sync::mpsc::Sender<tokio::sync::oneshot::Sender<Duration>>)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_exact`
[INFO] [stdout]   --> src/bin/tokio_async_read.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn read_exact<R, T>(reader: R, buffer: T) -> ReadExact<R, T>
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0271, E0308.
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_exact`
[INFO] [stdout]   --> src/bin/tokio_async_read.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn read_exact<R, T>(reader: R, buffer: T) -> ReadExact<R, T>
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0271`.
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0023]: this pattern has 3 fields, but the corresponding tuple variant has 1 field
[INFO] [stdout]    --> src/bin/tokio_echo.rs:33:21
[INFO] [stdout]     |
[INFO] [stdout] 33  |                     Ok(amount, _, _) => println!("wrote {} bytes", amount),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^ expected 1 field, found 3
[INFO] [stdout]     |
[INFO] [stdout] help: missing parenthesis
[INFO] [stdout]     |
[INFO] [stdout] 33  |                     Ok((amount, _, _)) => println!("wrote {} bytes", amount),
[INFO] [stdout]     |                        ^            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/bin/tokio_spawn_cout_bytes_read.rs:88:57
[INFO] [stdout]    |
[INFO] [stdout] 88 | ...                   tx.send(buf.len()).map_err(|e| io::ErrorKind::Other.into())
[INFO] [stdout]    |                                                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0023`.
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/tokio_read_timeout.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     ;
[INFO] [stdout]    |     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/bin/tokio_functional.rs:72:61
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn with_future<F: Future<Item = String, Error = io::Error>>(f: F) {}
[INFO] [stdout]    |                                                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/tokio_functional.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         get_data().and_then(|data| {
[INFO] [stdout] 17 | |             dst.push(data);
[INFO] [stdout] 18 | |             Ok(())
[INFO] [stdout] 19 | |         });
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/tokio_spawn.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             tx.send("hello from spawned task");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/bin/tokio_ping_pong.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |             tokio::spawn(lazy(|| rtt(tx)))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- help: try adding a semicolon: `;`
[INFO] [stdout]    |             |
[INFO] [stdout]    |             expected `()`, found struct `tokio::executor::Spawn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0271, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0271`.
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "080b446a13c8f5d1289798c4eb1b3b818015c8dd12058d66525193e4b497cbfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "080b446a13c8f5d1289798c4eb1b3b818015c8dd12058d66525193e4b497cbfe", kill_on_drop: false }`
[INFO] [stdout] 080b446a13c8f5d1289798c4eb1b3b818015c8dd12058d66525193e4b497cbfe
