[INFO] cloning repository https://github.com/ranafge/ust_tokio_select_repeat [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ranafge/ust_tokio_select_repeat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Fust_tokio_select_repeat", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Fust_tokio_select_repeat'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1ea261b87bb767c761b13ef02a7229a638366c91 [INFO] checking ranafge/ust_tokio_select_repeat against master#982c6f8721416431ec62bb0b9105c0578a9fc603 for pr-129329 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Fust_tokio_select_repeat" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ranafge/ust_tokio_select_repeat on toolchain 982c6f8721416431ec62bb0b9105c0578a9fc603 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+982c6f8721416431ec62bb0b9105c0578a9fc603" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ranafge/ust_tokio_select_repeat [INFO] finished tweaking git repo https://github.com/ranafge/ust_tokio_select_repeat [INFO] tweaked toml for git repo https://github.com/ranafge/ust_tokio_select_repeat written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/ranafge/ust_tokio_select_repeat already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+982c6f8721416431ec62bb0b9105c0578a9fc603" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking ranafge/ust_tokio_select_repeat against try#fa63ef4ad80785c0f3f362275f3772bdc67c23e0 for pr-129329 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Fust_tokio_select_repeat" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ranafge/ust_tokio_select_repeat on toolchain fa63ef4ad80785c0f3f362275f3772bdc67c23e0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ranafge/ust_tokio_select_repeat [INFO] finished tweaking git repo https://github.com/ranafge/ust_tokio_select_repeat [INFO] tweaked toml for git repo https://github.com/ranafge/ust_tokio_select_repeat written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ranafge/ust_tokio_select_repeat already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] checking ranafge/ust_tokio_select_repeat against try#fa63ef4ad80785c0f3f362275f3772bdc67c23e0 for pr-129329 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Fust_tokio_select_repeat" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ranafge/ust_tokio_select_repeat on toolchain fa63ef4ad80785c0f3f362275f3772bdc67c23e0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ranafge/ust_tokio_select_repeat [INFO] finished tweaking git repo https://github.com/ranafge/ust_tokio_select_repeat [INFO] tweaked toml for git repo https://github.com/ranafge/ust_tokio_select_repeat written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ranafge/ust_tokio_select_repeat already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded windows-targets v0.48.5 [INFO] [stderr] Downloaded scopeguard v1.2.0 [INFO] [stderr] Downloaded tokio-macros v2.2.0 [INFO] [stderr] Downloaded addr2line v0.21.0 [INFO] [stderr] Downloaded cc v1.0.83 [INFO] [stderr] Downloaded backtrace v0.3.69 [INFO] [stderr] Downloaded memchr v2.7.1 [INFO] [stderr] Downloaded mio v0.8.10 [INFO] [stderr] Downloaded proc-macro2 v1.0.78 [INFO] [stderr] Downloaded bytes v1.5.0 [INFO] [stderr] Downloaded lock_api v0.4.11 [INFO] [stderr] Downloaded socket2 v0.5.5 [INFO] [stderr] Downloaded miniz_oxide v0.7.1 [INFO] [stderr] Downloaded hermit-abi v0.3.4 [INFO] [stderr] Downloaded redox_syscall v0.4.1 [INFO] [stderr] Downloaded syn v2.0.48 [INFO] [stderr] Downloaded gimli v0.28.1 [INFO] [stderr] Downloaded object v0.32.2 [INFO] [stderr] Downloaded smallvec v1.13.1 [INFO] [stderr] Downloaded parking_lot_core v0.9.9 [INFO] [stderr] Downloaded pin-project-lite v0.2.13 [INFO] [stderr] Downloaded windows_aarch64_gnullvm v0.48.5 [INFO] [stderr] Downloaded windows_x86_64_gnullvm v0.48.5 [INFO] [stderr] Downloaded windows_aarch64_msvc v0.48.5 [INFO] [stderr] Downloaded libc v0.2.152 [INFO] [stderr] Downloaded windows_i686_gnu v0.48.5 [INFO] [stderr] Downloaded windows_i686_msvc v0.48.5 [INFO] [stderr] Downloaded tokio v1.35.1 [INFO] [stderr] Downloaded windows_x86_64_gnu v0.48.5 [INFO] [stderr] Downloaded windows_x86_64_msvc v0.48.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] be3c7cdd7c9058e734a8a5f1d1f3ec6301e6ec5f1a3db2b6a0905e0d08a6930a [INFO] running `Command { std: "docker" "start" "-a" "be3c7cdd7c9058e734a8a5f1d1f3ec6301e6ec5f1a3db2b6a0905e0d08a6930a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "be3c7cdd7c9058e734a8a5f1d1f3ec6301e6ec5f1a3db2b6a0905e0d08a6930a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "be3c7cdd7c9058e734a8a5f1d1f3ec6301e6ec5f1a3db2b6a0905e0d08a6930a", kill_on_drop: false }` [INFO] [stdout] be3c7cdd7c9058e734a8a5f1d1f3ec6301e6ec5f1a3db2b6a0905e0d08a6930a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+fa63ef4ad80785c0f3f362275f3772bdc67c23e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9fc30d19965d0abfe4bb3f8ba68d0153dfd3a471ef95c8fd80a96ddc39e2ffd2 [INFO] running `Command { std: "docker" "start" "-a" "9fc30d19965d0abfe4bb3f8ba68d0153dfd3a471ef95c8fd80a96ddc39e2ffd2", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.152 [INFO] [stderr] Compiling proc-macro2 v1.0.78 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling parking_lot_core v0.9.9 [INFO] [stderr] Checking smallvec v1.13.1 [INFO] [stderr] Checking scopeguard v1.2.0 [INFO] [stderr] Checking bytes v1.5.0 [INFO] [stderr] Checking pin-project-lite v0.2.13 [INFO] [stderr] Compiling lock_api v0.4.11 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling syn v2.0.48 [INFO] [stderr] Checking socket2 v0.5.5 [INFO] [stderr] Checking mio v0.8.10 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Compiling tokio-macros v2.2.0 [INFO] [stderr] Checking tokio v1.35.1 [INFO] [stderr] Checking rust_tokio_select_repeat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0601]: `main` function not found in crate `modifying_a_branch` [INFO] [stdout] --> examples/modifying_a_branch.rs:3:48 [INFO] [stdout] | [INFO] [stdout] 3 | // an async operation to perform on i32 values [INFO] [stdout] | ^ consider adding a `main` function to `examples/modifying_a_branch.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `process` in this scope [INFO] [stdout] --> examples/errors.rs:17:43 [INFO] [stdout] | [INFO] [stdout] 17 | tokio::spawn(async move { process(socket) }); [INFO] [stdout] | ^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> examples/errors.rs:21:13 [INFO] [stdout] | [INFO] [stdout] 15 | / loop { [INFO] [stdout] 16 | | let (socket, _) = listener.accept().await?; [INFO] [stdout] 17 | | tokio::spawn(async move { process(socket) }); [INFO] [stdout] 18 | | } [INFO] [stdout] | |_____________- any code following this expression is unreachable [INFO] [stdout] ... [INFO] [stdout] 21 | Ok::<_, io::Error>(()) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stdout] error[E0214]: parenthesized type parameters may only be used with a `Fn` trait [INFO] [stdout] --> examples/borrowing.rs:12:25 [INFO] [stdout] | [INFO] [stdout] 12 | Ok::<_, io::Error(())> [INFO] [stdout] | ^^^^^^^^^ only `Fn` traits may use parentheses [INFO] [stdout] | [INFO] [stdout] help: use angle brackets instead [INFO] [stdout] | [INFO] [stdout] 12 | Ok::<_, io::Error<()>> [INFO] [stdout] | ~ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0214]: parenthesized type parameters may only be used with a `Fn` trait [INFO] [stdout] --> examples/borrowing.rs:18:25 [INFO] [stdout] | [INFO] [stdout] 18 | Ok::<_, io::Error(())> [INFO] [stdout] | ^^^^^^^^^ only `Fn` traits may use parentheses [INFO] [stdout] | [INFO] [stdout] help: use angle brackets instead [INFO] [stdout] | [INFO] [stdout] 18 | Ok::<_, io::Error<()>> [INFO] [stdout] | ~ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_tokio_select_repeat` (example "modifying_a_branch") due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0425`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_tokio_select_repeat` (example "errors") due to 2 previous errors; 1 warning emitted [INFO] [stdout] error[E0107]: struct takes 0 generic arguments but 1 generic argument was supplied [INFO] [stdout] --> examples/borrowing.rs:12:25 [INFO] [stdout] | [INFO] [stdout] 12 | Ok::<_, io::Error(())> [INFO] [stdout] | ^^^^^---- help: remove the unnecessary generics [INFO] [stdout] | | [INFO] [stdout] | expected 0 generic arguments [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in an async block that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> examples/borrowing.rs:10:62 [INFO] [stdout] | [INFO] [stdout] 9 | Ok(_) = async { [INFO] [stdout] | ----- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] 10 | let mut socket = TcpStream::connect(addr1).await?; [INFO] [stdout] | ^ cannot use the `?` operator in an async block that returns `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for fn item `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in an async block that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> examples/borrowing.rs:11:41 [INFO] [stdout] | [INFO] [stdout] 9 | Ok(_) = async { [INFO] [stdout] | ----- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] 10 | let mut socket = TcpStream::connect(addr1).await?; [INFO] [stdout] 11 | socket.write_all(data).await?; [INFO] [stdout] | ^ cannot use the `?` operator in an async block that returns `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for fn item `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0107]: struct takes 0 generic arguments but 1 generic argument was supplied [INFO] [stdout] --> examples/borrowing.rs:18:25 [INFO] [stdout] | [INFO] [stdout] 18 | Ok::<_, io::Error(())> [INFO] [stdout] | ^^^^^---- help: remove the unnecessary generics [INFO] [stdout] | | [INFO] [stdout] | expected 0 generic arguments [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in an async block that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> examples/borrowing.rs:16:61 [INFO] [stdout] | [INFO] [stdout] 15 | Ok(_) = async { [INFO] [stdout] | ----- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] 16 | let mut socket = TcpStream::connect(addr2).await?; [INFO] [stdout] | ^ cannot use the `?` operator in an async block that returns `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for fn item `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in an async block that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> examples/borrowing.rs:17:41 [INFO] [stdout] | [INFO] [stdout] 15 | Ok(_) = async { [INFO] [stdout] | ----- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] 16 | let mut socket = TcpStream::connect(addr2).await?; [INFO] [stdout] 17 | socket.write_all(data).await?; [INFO] [stdout] | ^ cannot use the `?` operator in an async block that returns `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for fn item `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> examples/borrowing.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 8 | / tokio::select! { [INFO] [stdout] 9 | | Ok(_) = async { [INFO] [stdout] | | ^^^^^ expected enum constructor, found `Result<_, _>` [INFO] [stdout] 10 | | let mut socket = TcpStream::connect(addr1).await?; [INFO] [stdout] 11 | | socket.write_all(data).await?; [INFO] [stdout] ... | [INFO] [stdout] 20 | | else => {} [INFO] [stdout] 21 | | } [INFO] [stdout] | |_____- this expression has type `&fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] | [INFO] [stdout] = note: expected enum constructor `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] found enum `Result<_, _>` [INFO] [stdout] help: use parentheses to construct this tuple variant [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.35.1/src/macros/select.rs:541:39 [INFO] [stdout] | [INFO] [stdout] 541| match (&out)(/* value */) { [INFO] [stdout] | + ++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> examples/borrowing.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 8 | / tokio::select! { [INFO] [stdout] 9 | | Ok(_) = async { [INFO] [stdout] 10 | | let mut socket = TcpStream::connect(addr1).await?; [INFO] [stdout] 11 | | socket.write_all(data).await?; [INFO] [stdout] ... | [INFO] [stdout] 15 | | Ok(_) = async { [INFO] [stdout] | | ^^^^^ expected enum constructor, found `Result<_, _>` [INFO] [stdout] ... | [INFO] [stdout] 20 | | else => {} [INFO] [stdout] 21 | | } [INFO] [stdout] | |_____- this expression has type `&fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] | [INFO] [stdout] = note: expected enum constructor `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] found enum `Result<_, _>` [INFO] [stdout] help: use parentheses to construct this tuple variant [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.35.1/src/macros/select.rs:541:39 [INFO] [stdout] | [INFO] [stdout] 541| match (&out)(/* value */) { [INFO] [stdout] | + ++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> examples/borrowing.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 8 | / tokio::select! { [INFO] [stdout] 9 | | Ok(_) = async { [INFO] [stdout] | | ^^^^^ expected enum constructor, found `Result<_, _>` [INFO] [stdout] 10 | | let mut socket = TcpStream::connect(addr1).await?; [INFO] [stdout] 11 | | socket.write_all(data).await?; [INFO] [stdout] ... | [INFO] [stdout] 20 | | else => {} [INFO] [stdout] 21 | | } [INFO] [stdout] | |_____- this expression has type `race::{closure#0}::__tokio_select_util::Out Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}, fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}>` [INFO] [stdout] | [INFO] [stdout] = note: expected enum constructor `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] found enum `Result<_, _>` [INFO] [stdout] help: use parentheses to construct this tuple variant [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.35.1/src/macros/select.rs:563:21 [INFO] [stdout] | [INFO] [stdout] 563| match output(/* value */) { [INFO] [stdout] | +++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> examples/borrowing.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 8 | / tokio::select! { [INFO] [stdout] 9 | | Ok(_) = async { [INFO] [stdout] 10 | | let mut socket = TcpStream::connect(addr1).await?; [INFO] [stdout] 11 | | socket.write_all(data).await?; [INFO] [stdout] ... | [INFO] [stdout] 15 | | Ok(_) = async { [INFO] [stdout] | | ^^^^^ expected enum constructor, found `Result<_, _>` [INFO] [stdout] ... | [INFO] [stdout] 20 | | else => {} [INFO] [stdout] 21 | | } [INFO] [stdout] | |_____- this expression has type `race::{closure#0}::__tokio_select_util::Out Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}, fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}>` [INFO] [stdout] | [INFO] [stdout] = note: expected enum constructor `fn(_) -> Result<_, std::io::Error> {Result::<_, std::io::Error>::Ok}` [INFO] [stdout] found enum `Result<_, _>` [INFO] [stdout] help: use parentheses to construct this tuple variant [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tokio-1.35.1/src/macros/select.rs:563:21 [INFO] [stdout] | [INFO] [stdout] 563| match output(/* value */) { [INFO] [stdout] | +++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `fn() -> impl Future {computational2}` is not a future [INFO] [stdout] --> examples/return_value.rs:11:15 [INFO] [stdout] | [INFO] [stdout] 5 | async fn computational2() -> String { [INFO] [stdout] | -------------- consider calling this function [INFO] [stdout] ... [INFO] [stdout] 11 | let out = tokio::select! { [INFO] [stdout] | _______________^ [INFO] [stdout] 12 | | res1 = computational1() => { [INFO] [stdout] 13 | | println!("first one") [INFO] [stdout] 14 | | } [INFO] [stdout] ... | [INFO] [stdout] 17 | | } [INFO] [stdout] 18 | | }; [INFO] [stdout] | | ^ [INFO] [stdout] | | | [INFO] [stdout] | |_____`fn() -> impl Future {computational2}` is not a future [INFO] [stdout] | required by a bound introduced by this call [INFO] [stdout] | [INFO] [stdout] = help: the trait `Future` is not implemented for fn item `fn() -> impl Future {computational2}` [INFO] [stdout] = help: use parentheses to call this function: `computational2()` [INFO] [stdout] = note: this error originates in the macro `$crate::select` which comes from the expansion of the macro `tokio::select` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tx1` [INFO] [stdout] --> examples/loops.rs:5:10 [INFO] [stdout] | [INFO] [stdout] 5 | let (tx1, mut rx1) = mpsc::channel(128); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_tx1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tx2` [INFO] [stdout] --> examples/loops.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | let (tx2, mut rx2) = mpsc::channel(128); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_tx2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tx3` [INFO] [stdout] --> examples/loops.rs:7:10 [INFO] [stdout] | [INFO] [stdout] 7 | let (tx3, mut rx3) = mpsc::channel(128); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_tx3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: `fn() -> impl Future {computational2}` is not a future [INFO] [stdout] --> examples/return_value.rs:11:15 [INFO] [stdout] | [INFO] [stdout] 5 | async fn computational2() -> String { [INFO] [stdout] | -------------- consider calling this function [INFO] [stdout] ... [INFO] [stdout] 11 | let out = tokio::select! { [INFO] [stdout] | _______________^ [INFO] [stdout] 12 | | res1 = computational1() => { [INFO] [stdout] 13 | | println!("first one") [INFO] [stdout] 14 | | } [INFO] [stdout] ... | [INFO] [stdout] 17 | | } [INFO] [stdout] 18 | | }; [INFO] [stdout] | |_____^ `fn() -> impl Future {computational2}` is not a future [INFO] [stdout] | [INFO] [stdout] = help: the trait `Future` is not implemented for fn item `fn() -> impl Future {computational2}` [INFO] [stdout] = help: use parentheses to call this function: `computational2()` [INFO] [stdout] = note: this error originates in the macro `$crate::select` which comes from the expansion of the macro `tokio::select` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> examples/resuming_an_async_operation.rs:7:10 [INFO] [stdout] | [INFO] [stdout] 7 | let (mut tx, mut rx) = tokio::sync::mpsc::channel(128); [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: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 12 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0107, E0214, E0277, E0308. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0107`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_tokio_select_repeat` (example "return_value") due to 3 previous errors [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_tokio_select_repeat` (example "borrowing") due to 13 previous errors [INFO] running `Command { std: "docker" "inspect" "9fc30d19965d0abfe4bb3f8ba68d0153dfd3a471ef95c8fd80a96ddc39e2ffd2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9fc30d19965d0abfe4bb3f8ba68d0153dfd3a471ef95c8fd80a96ddc39e2ffd2", kill_on_drop: false }` [INFO] [stdout] 9fc30d19965d0abfe4bb3f8ba68d0153dfd3a471ef95c8fd80a96ddc39e2ffd2