[INFO] crate broker-tokio 0.2.16 is already in cache
[INFO] testing broker-tokio-0.2.16 against 1.45.2 for beta-1.46-1
[INFO] extracting crate broker-tokio 0.2.16 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate broker-tokio 0.2.16 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate broker-tokio 0.2.16
[INFO] finished tweaking crates.io crate broker-tokio 0.2.16
[INFO] tweaked toml for crates.io crate broker-tokio 0.2.16 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e92af245fce380e7ca9e1616eeec080c4a1dbe0d519f0fb83c9e327c60031f2c
[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" "e92af245fce380e7ca9e1616eeec080c4a1dbe0d519f0fb83c9e327c60031f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e92af245fce380e7ca9e1616eeec080c4a1dbe0d519f0fb83c9e327c60031f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e92af245fce380e7ca9e1616eeec080c4a1dbe0d519f0fb83c9e327c60031f2c", kill_on_drop: false }`
[INFO] [stdout] e92af245fce380e7ca9e1616eeec080c4a1dbe0d519f0fb83c9e327c60031f2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e01d96994daf63aa471d34f8eaaba0feeb9546d43630209f419bb01dca3f8b1
[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" "1e01d96994daf63aa471d34f8eaaba0feeb9546d43630209f419bb01dca3f8b1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling broker-tokio v0.2.16 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.07s
[INFO] running `Command { std: "docker" "inspect" "1e01d96994daf63aa471d34f8eaaba0feeb9546d43630209f419bb01dca3f8b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e01d96994daf63aa471d34f8eaaba0feeb9546d43630209f419bb01dca3f8b1", kill_on_drop: false }`
[INFO] [stdout] 1e01d96994daf63aa471d34f8eaaba0feeb9546d43630209f419bb01dca3f8b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34a243d3b37e8e6fd57b1fb22fa63445b494ee6e966e8ec2341be6efcfcb8fda
[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" "34a243d3b37e8e6fd57b1fb22fa63445b494ee6e966e8ec2341be6efcfcb8fda", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling generator v0.6.21
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling proptest v0.9.6
[INFO] [stderr]    Compiling tokio-test v0.2.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling loom v0.2.15
[INFO] [stderr]    Compiling broker-tokio v0.2.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `backoff`
[INFO] [stdout]  --> src/tests/backoff.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) fn backoff(n: usize) -> impl Future<Output = ()> {
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `backoff_clone`
[INFO] [stdout]   --> src/tests/backoff.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) fn backoff_clone(n: usize) -> impl Future<Output = ()> {
[INFO] [stdout]    |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `track_drop`
[INFO] [stdout]   --> src/tests/track_drop.rs:14:15
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) fn track_drop<T: Future>(
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_ref`
[INFO] [stdout]   --> src/tests/track_drop.rs:29:19
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub(crate) fn get_ref(&self) -> &T {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `did_drop_future`
[INFO] [stdout]   --> src/tests/track_drop.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub(crate) fn did_drop_future(&self) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `did_drop_output`
[INFO] [stdout]   --> src/tests/track_drop.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub(crate) fn did_drop_output(&self) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 15s
[INFO] running `Command { std: "docker" "inspect" "34a243d3b37e8e6fd57b1fb22fa63445b494ee6e966e8ec2341be6efcfcb8fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34a243d3b37e8e6fd57b1fb22fa63445b494ee6e966e8ec2341be6efcfcb8fda", kill_on_drop: false }`
[INFO] [stdout] 34a243d3b37e8e6fd57b1fb22fa63445b494ee6e966e8ec2341be6efcfcb8fda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a24ce58df4e8392711b8dd07e4efd6ae8e21ab3b517a35a449d94efca7cf739c
[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" "a24ce58df4e8392711b8dd07e4efd6ae8e21ab3b517a35a449d94efca7cf739c", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `backoff`
[INFO] [stderr]  --> src/tests/backoff.rs:7:15
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub(crate) fn backoff(n: usize) -> impl Future<Output = ()> {
[INFO] [stderr]   |               ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `backoff_clone`
[INFO] [stderr]   --> src/tests/backoff.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub(crate) fn backoff_clone(n: usize) -> impl Future<Output = ()> {
[INFO] [stderr]    |               ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `track_drop`
[INFO] [stderr]   --> src/tests/track_drop.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub(crate) fn track_drop<T: Future>(
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_ref`
[INFO] [stderr]   --> src/tests/track_drop.rs:29:19
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub(crate) fn get_ref(&self) -> &T {
[INFO] [stderr]    |                   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `did_drop_future`
[INFO] [stderr]   --> src/tests/track_drop.rs:50:19
[INFO] [stderr]    |
[INFO] [stderr] 50 |     pub(crate) fn did_drop_future(&self) -> bool {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `did_drop_output`
[INFO] [stderr]   --> src/tests/track_drop.rs:54:19
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub(crate) fn did_drop_output(&self) -> bool {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/broker_tokio-7570a334a1e07e5f
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests broker-tokio
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test src/runtime/builder.rs - runtime::builder::Builder::build (line 298) ... FAILED
[INFO] [stdout] test src/runtime/builder.rs - runtime::builder::Builder::enable_all (line 121) ... FAILED
[INFO] [stdout] test src/prelude.rs - prelude (line 9) ... FAILED
[INFO] [stdout] test src/lib.rs -  (line 248) ... FAILED
[INFO] [stdout] test src/runtime/handle.rs - runtime::handle::Handle::current (line 47) ... FAILED
[INFO] [stdout] test src/io/mod.rs - io (line 98) ... FAILED
[INFO] [stdout] test src/runtime/mod.rs - runtime (line 65) ... FAILED
[INFO] [stdout] test src/runtime/builder.rs - runtime::builder::Builder (line 24) ... FAILED
[INFO] [stdout] test src/runtime/mod.rs - runtime::Runtime::new (line 321) ... FAILED
[INFO] [stdout] test src/runtime/mod.rs - runtime::Runtime::handle (line 431) ... FAILED
[INFO] [stdout] test src/runtime/builder.rs - runtime::builder::Builder::on_thread_stop (line 272) ... FAILED
[INFO] [stdout] test src/runtime/builder.rs - runtime::builder::Builder::on_thread_start (line 246) ... FAILED
[INFO] [stdout] test src/runtime/mod.rs - runtime (line 140) ... FAILED
[INFO] [stdout] test src/runtime/builder.rs - runtime::builder::Builder::core_threads (line 161) ... FAILED
[INFO] [stdout] test src/runtime/mod.rs - runtime (line 22) ... FAILED
[INFO] [stdout] test src/runtime/builder.rs - runtime::builder::Builder::thread_name (line 201) ... FAILED
[INFO] [stdout] test src/io/mod.rs - io (line 40) ... FAILED
[INFO] [stdout] test src/runtime/builder.rs - runtime::builder::Builder::thread_stack_size (line 225) ... FAILED
[INFO] [stdout] test src/runtime/mod.rs - runtime (line 120) ... FAILED
[INFO] [stdout] test src/io/mod.rs - io (line 77) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/runtime/builder.rs - runtime::builder::Builder::build (line 298) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/builder.rs:299:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::runtime::Builder;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Builder`
[INFO] [stdout]  --> src/runtime/builder.rs:301:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | let mut rt = Builder::new().build().unwrap();
[INFO] [stdout]   |              ^^^^^^^ use of undeclared type or module `Builder`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/builder.rs - runtime::builder::Builder::enable_all (line 121) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/runtime/builder.rs:122:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/prelude.rs - prelude (line 9) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/prelude.rs:11:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs -  (line 248) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/lib.rs:250:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/lib.rs:249:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::net::TcpListener;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `tokio::net::TcpListener`
[INFO] [stdout]  --> src/lib.rs:249:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::net::TcpListener;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/lib.rs:252:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `TcpListener`
[INFO] [stdout]  --> src/lib.rs:254:24
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut listener = TcpListener::bind("127.0.0.1:8080").await?;
[INFO] [stdout]   |                        ^^^^^^^^^^^ use of undeclared type or module `TcpListener`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]   --> src/lib.rs:259:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         tokio::spawn(async move {
[INFO] [stdout]    |         ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `main` has invalid return type `impl std::future::Future`
[INFO] [stdout]  --> src/lib.rs:253:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` can only return types that implement `std::process::Termination`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `()`, or a `Result`
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:260:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |             let mut buf = [0; 1024];
[INFO] [stdout]    |                 ^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:275:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:264:48
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                                                ^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:264:31
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:264:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                                           ^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:264:31
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:275:51
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                   ^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:275:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:275:51
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                   ^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:275:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/lib.rs:275:50
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                  ^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/lib.rs:275:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> src/lib.rs:253:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0433, E0698, E0752.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/handle.rs - runtime::handle::Handle::current (line 47) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/handle.rs:48:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/handle.rs:53:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use tokio::runtime::Handle;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Runtime`
[INFO] [stdout]  --> src/runtime/handle.rs:51:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | let rt = Runtime::new().unwrap();
[INFO] [stdout]   |          ^^^^^^^ use of undeclared type or module `Runtime`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Handle`
[INFO] [stdout]   --> src/runtime/handle.rs:55:14
[INFO] [stdout]    |
[INFO] [stdout] 11 | let handle = Handle::current();
[INFO] [stdout]    |              ^^^^^^ use of undeclared type or module `Handle`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/io/mod.rs - io (line 98) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:99:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, BufWriter, AsyncWriteExt};
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:100:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::fs::File;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/io/mod.rs:99:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, BufWriter, AsyncWriteExt};
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:102:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `File`
[INFO] [stdout]  --> src/io/mod.rs:104:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f = File::create("foo.txt").await?;
[INFO] [stdout]   |             ^^^^ use of undeclared type or module `File`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `BufWriter`
[INFO] [stdout]   --> src/io/mod.rs:106:26
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut writer = BufWriter::new(f);
[INFO] [stdout]    |                          ^^^^^^^^^ use of undeclared type or module `BufWriter`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `main` has invalid return type `impl futures_core::Future`
[INFO] [stdout]  --> src/io/mod.rs:103:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> io::Result<()> {
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^ `main` can only return types that implement `std::process::Termination`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `()`, or a `Result`
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> src/io/mod.rs:103:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> io::Result<()> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0433, E0752.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/mod.rs - runtime (line 65) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:67:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:66:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::net::TcpListener;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:68:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `tokio::net::TcpListener`, `tokio::runtime::Runtime`
[INFO] [stdout]  --> src/runtime/mod.rs:66:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::net::TcpListener;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use tokio::prelude::*;
[INFO] [stdout] 5 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Runtime`
[INFO] [stdout]  --> src/runtime/mod.rs:72:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut rt = Runtime::new()?;
[INFO] [stdout]   |                  ^^^^^^^ use of undeclared type or module `Runtime`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `TcpListener`
[INFO] [stdout]   --> src/runtime/mod.rs:76:28
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut listener = TcpListener::bind("127.0.0.1:8080").await?;
[INFO] [stdout]    |                            ^^^^^^^^^^^ use of undeclared type or module `TcpListener`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]   --> src/runtime/mod.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             tokio::spawn(async move {
[INFO] [stdout]    |             ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:82:21
[INFO] [stdout]    |
[INFO] [stdout] 19 |                 let mut buf = [0; 1024];
[INFO] [stdout]    |                     ^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:97:37
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:86:52
[INFO] [stdout]    |
[INFO] [stdout] 23 |                     let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                                                    ^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:86:35
[INFO] [stdout]    |
[INFO] [stdout] 23 |                     let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:86:47
[INFO] [stdout]    |
[INFO] [stdout] 23 |                     let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                                               ^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:86:35
[INFO] [stdout]    |
[INFO] [stdout] 23 |                     let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:97:55
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                       ^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:97:37
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:97:55
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                       ^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:97:37
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:97:54
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                      ^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:97:37
[INFO] [stdout]    |
[INFO] [stdout] 34 |                     if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0698.
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/builder.rs - runtime::builder::Builder (line 24) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/builder.rs:25:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime::Builder;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Builder`
[INFO] [stdout]  --> src/runtime/builder.rs:29:19
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let runtime = Builder::new()
[INFO] [stdout]   |                   ^^^^^^^ use of undeclared type or module `Builder`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/mod.rs - runtime::Runtime::new (line 321) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:322:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Runtime`
[INFO] [stdout]  --> src/runtime/mod.rs:324:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | let rt = Runtime::new()
[INFO] [stdout]   |          ^^^^^^^ use of undeclared type or module `Runtime`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/mod.rs - runtime::Runtime::handle (line 431) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:432:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::runtime::Runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Runtime`
[INFO] [stdout]  --> src/runtime/mod.rs:434:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | let rt = Runtime::new()
[INFO] [stdout]   |          ^^^^^^^ use of undeclared type or module `Runtime`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/builder.rs - runtime::builder::Builder::on_thread_stop (line 272) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/runtime/builder.rs:273:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/builder.rs - runtime::builder::Builder::on_thread_start (line 246) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/runtime/builder.rs:247:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/mod.rs - runtime (line 140) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:141:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/builder.rs - runtime::builder::Builder::core_threads (line 161) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/runtime/builder.rs:162:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/mod.rs - runtime (line 22) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:24:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:23:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::net::TcpListener;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `tokio::net::TcpListener`
[INFO] [stdout]  --> src/runtime/mod.rs:23:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::net::TcpListener;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:26:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `TcpListener`
[INFO] [stdout]  --> src/runtime/mod.rs:28:24
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut listener = TcpListener::bind("127.0.0.1:8080").await?;
[INFO] [stdout]   |                        ^^^^^^^^^^^ use of undeclared type or module `TcpListener`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]   --> src/runtime/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         tokio::spawn(async move {
[INFO] [stdout]    |         ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `main` has invalid return type `impl std::future::Future`
[INFO] [stdout]  --> src/runtime/mod.rs:27:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` can only return types that implement `std::process::Termination`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `()`, or a `Result`
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |             let mut buf = [0; 1024];
[INFO] [stdout]    |                 ^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:38:48
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                                                ^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:38:31
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:38:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                                           ^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:38:31
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let n = match socket.read(&mut buf).await {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:49:51
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                   ^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:49:51
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                   ^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async` block must be known in this context
[INFO] [stdout]   --> src/runtime/mod.rs:49:50
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                                  ^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async` block because of this `await`
[INFO] [stdout]   --> src/runtime/mod.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 if let Err(e) = socket.write_all(&buf[0..n]).await {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> src/runtime/mod.rs:27:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0433, E0698, E0752.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/builder.rs - runtime::builder::Builder::thread_name (line 201) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/runtime/builder.rs:202:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/io/mod.rs - io (line 40) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:41:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, AsyncReadExt};
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:42:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::fs::File;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/io/mod.rs:41:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, AsyncReadExt};
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:44:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `File`
[INFO] [stdout]  --> src/io/mod.rs:46:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut f = File::open("foo.txt").await?;
[INFO] [stdout]   |                 ^^^^ use of undeclared type or module `File`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `main` has invalid return type `impl futures_core::Future`
[INFO] [stdout]  --> src/io/mod.rs:45:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> io::Result<()> {
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^ `main` can only return types that implement `std::process::Termination`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `()`, or a `Result`
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> src/io/mod.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 9  |     let mut buffer = [0; 10];
[INFO] [stdout]    |         ^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> src/io/mod.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let n = f.read(&mut buffer).await?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> src/io/mod.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let n = f.read(&mut buffer).await?;
[INFO] [stdout]    |                         ^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> src/io/mod.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let n = f.read(&mut buffer).await?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0698]: type inside `async fn` body must be known in this context
[INFO] [stdout]   --> src/io/mod.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let n = f.read(&mut buffer).await?;
[INFO] [stdout]    |                    ^^^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: the type is part of the `async fn` body because of this `await`
[INFO] [stdout]   --> src/io/mod.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let n = f.read(&mut buffer).await?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> src/io/mod.rs:45:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> io::Result<()> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0433, E0698, E0752.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/builder.rs - runtime::builder::Builder::thread_stack_size (line 225) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/runtime/builder.rs:226:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/runtime/mod.rs - runtime (line 120) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/runtime/mod.rs:121:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::runtime;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/io/mod.rs - io (line 77) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:78:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, BufReader, AsyncBufReadExt};
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:79:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::fs::File;
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `tokio`
[INFO] [stdout]  --> src/io/mod.rs:78:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{self, BufReader, AsyncBufReadExt};
[INFO] [stdout]   |     ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `tokio`
[INFO] [stdout]  --> src/io/mod.rs:81:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared type or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `File`
[INFO] [stdout]  --> src/io/mod.rs:83:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f = File::open("foo.txt").await?;
[INFO] [stdout]   |             ^^^^ use of undeclared type or module `File`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `BufReader`
[INFO] [stdout]  --> src/io/mod.rs:84:22
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut reader = BufReader::new(f);
[INFO] [stdout]   |                      ^^^^^^^^^ use of undeclared type or module `BufReader`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `main` has invalid return type `impl futures_core::Future`
[INFO] [stdout]  --> src/io/mod.rs:82:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> io::Result<()> {
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^ `main` can only return types that implement `std::process::Termination`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `()`, or a `Result`
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> src/io/mod.rs:82:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() -> io::Result<()> {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0433, E0752.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/io/mod.rs - io (line 40)
[INFO] [stdout]     src/io/mod.rs - io (line 77)
[INFO] [stdout]     src/io/mod.rs - io (line 98)
[INFO] [stdout]     src/lib.rs -  (line 248)
[INFO] [stdout]     src/prelude.rs - prelude (line 9)
[INFO] [stdout]     src/runtime/builder.rs - runtime::builder::Builder (line 24)
[INFO] [stdout]     src/runtime/builder.rs - runtime::builder::Builder::build (line 298)
[INFO] [stdout]     src/runtime/builder.rs - runtime::builder::Builder::core_threads (line 161)
[INFO] [stdout]     src/runtime/builder.rs - runtime::builder::Builder::enable_all (line 121)
[INFO] [stdout]     src/runtime/builder.rs - runtime::builder::Builder::on_thread_start (line 246)
[INFO] [stdout]     src/runtime/builder.rs - runtime::builder::Builder::on_thread_stop (line 272)
[INFO] [stdout]     src/runtime/builder.rs - runtime::builder::Builder::thread_name (line 201)
[INFO] [stdout]     src/runtime/builder.rs - runtime::builder::Builder::thread_stack_size (line 225)
[INFO] [stdout]     src/runtime/handle.rs - runtime::handle::Handle::current (line 47)
[INFO] [stdout]     src/runtime/mod.rs - runtime (line 120)
[INFO] [stdout]     src/runtime/mod.rs - runtime (line 140)
[INFO] [stdout]     src/runtime/mod.rs - runtime (line 22)
[INFO] [stdout]     src/runtime/mod.rs - runtime (line 65)
[INFO] [stdout]     src/runtime/mod.rs - runtime::Runtime::handle (line 431)
[INFO] [stdout]     src/runtime/mod.rs - runtime::Runtime::new (line 321)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 20 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "a24ce58df4e8392711b8dd07e4efd6ae8e21ab3b517a35a449d94efca7cf739c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a24ce58df4e8392711b8dd07e4efd6ae8e21ab3b517a35a449d94efca7cf739c", kill_on_drop: false }`
[INFO] [stdout] a24ce58df4e8392711b8dd07e4efd6ae8e21ab3b517a35a449d94efca7cf739c