[INFO] cloning repository https://github.com/alexxuyang/tokio-examples [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexxuyang/tokio-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexxuyang%2Ftokio-examples", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexxuyang%2Ftokio-examples'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 38774c6c9eea4dbdc17b6877adb17fa7278e3405 [INFO] testing alexxuyang/tokio-examples against try#1b74e096b9bfb06f84a3007193dcd2f059cbdf6a for pr-96025 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexxuyang%2Ftokio-examples" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/alexxuyang/tokio-examples on toolchain 1b74e096b9bfb06f84a3007193dcd2f059cbdf6a [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/alexxuyang/tokio-examples [INFO] finished tweaking git repo https://github.com/alexxuyang/tokio-examples [INFO] tweaked toml for git repo https://github.com/alexxuyang/tokio-examples written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/alexxuyang/tokio-examples already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 052c7e0eb9c4bbbc9f03e8e14e15d6e9fcfcb9ed39a3c51346d428eb1ccf2e55 [INFO] running `Command { std: "docker" "start" "-a" "052c7e0eb9c4bbbc9f03e8e14e15d6e9fcfcb9ed39a3c51346d428eb1ccf2e55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "052c7e0eb9c4bbbc9f03e8e14e15d6e9fcfcb9ed39a3c51346d428eb1ccf2e55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "052c7e0eb9c4bbbc9f03e8e14e15d6e9fcfcb9ed39a3c51346d428eb1ccf2e55", kill_on_drop: false }` [INFO] [stdout] 052c7e0eb9c4bbbc9f03e8e14e15d6e9fcfcb9ed39a3c51346d428eb1ccf2e55 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 8d09849d9a4831497fe39a807f0b92bf3975c381315af9839b62d34024bccc06 [INFO] running `Command { std: "docker" "start" "-a" "8d09849d9a4831497fe39a807f0b92bf3975c381315af9839b62d34024bccc06", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.54 [INFO] [stderr] Compiling cfg-if v0.1.7 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Compiling rand_core v0.4.0 [INFO] [stderr] Compiling lazy_static v1.3.0 [INFO] [stderr] Compiling futures v0.1.26 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling byteorder v1.3.1 [INFO] [stderr] Compiling scopeguard v0.3.3 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling stable_deref_trait v1.1.1 [INFO] [stderr] Compiling smallvec v0.6.9 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Compiling lazycell v1.2.1 [INFO] [stderr] Compiling nodrop v0.1.13 [INFO] [stderr] Compiling fnv v1.0.6 [INFO] [stderr] Compiling memoffset v0.2.1 [INFO] [stderr] Compiling log v0.4.6 [INFO] [stderr] Compiling owning_ref v0.4.0 [INFO] [stderr] Compiling crossbeam-utils v0.6.5 [INFO] [stderr] Compiling tokio-trace-core v0.1.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Compiling lock_api v0.1.5 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling rand_hc v0.1.0 [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] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling crossbeam-epoch v0.7.1 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Compiling iovec v0.1.2 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling num_cpus v1.10.0 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling crossbeam-deque v0.7.1 [INFO] [stderr] Compiling mio v0.6.16 [INFO] [stderr] Compiling tokio-executor v0.1.7 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling tokio-sync v0.1.5 [INFO] [stderr] Compiling tokio-timer v0.2.10 [INFO] [stderr] Compiling tokio-current-thread v0.1.6 [INFO] [stderr] Compiling mio-uds v0.6.7 [INFO] [stderr] Compiling tokio-codec v0.1.1 [INFO] [stderr] Compiling tokio-threadpool v0.1.14 [INFO] [stderr] Compiling parking_lot v0.7.1 [INFO] [stderr] Compiling tokio-reactor v0.1.9 [INFO] [stderr] Compiling tokio-fs v0.1.6 [INFO] [stderr] Compiling tokio-udp v0.1.3 [INFO] [stderr] Compiling tokio-uds v0.2.5 [INFO] [stderr] Compiling tokio-tcp v0.1.3 [INFO] [stderr] Compiling tokio v0.1.19 [INFO] [stderr] Compiling tokio-examples v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 35.15s [INFO] running `Command { std: "docker" "inspect" "8d09849d9a4831497fe39a807f0b92bf3975c381315af9839b62d34024bccc06", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8d09849d9a4831497fe39a807f0b92bf3975c381315af9839b62d34024bccc06", kill_on_drop: false }` [INFO] [stdout] 8d09849d9a4831497fe39a807f0b92bf3975c381315af9839b62d34024bccc06 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] da1b9c56239df66a4baf44d437d4db4bed467d8c217f78063f4a1d906cf91adb [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" "da1b9c56239df66a4baf44d437d4db4bed467d8c217f78063f4a1d906cf91adb", kill_on_drop: false }` [INFO] [stderr] Compiling tokio-examples v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/timeout.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/stream2.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::Future` [INFO] [stdout] --> examples/stream2.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use futures::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> examples/then.rs:9:37 [INFO] [stdout] | [INFO] [stdout] 9 | fn simple_func() -> Result> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 9 - fn simple_func() -> Result> { [INFO] [stdout] 9 + fn simple_func() -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/andthen2.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> examples/andthen1.rs:7:37 [INFO] [stdout] | [INFO] [stdout] 7 | fn simple_func() -> Result> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 7 - fn simple_func() -> Result> { [INFO] [stdout] 7 + fn simple_func() -> Result> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> examples/lazy2.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio::timer::Delay` [INFO] [stdout] --> examples/lazy2.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use tokio::timer::Delay; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Duration`, `Instant` [INFO] [stdout] --> examples/lazy2.rs:9:17 [INFO] [stdout] | [INFO] [stdout] 9 | use std::time::{Duration, Instant}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Add` [INFO] [stdout] --> examples/lazy2.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use std::ops::Add; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/andthen3.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/tryready1.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::Stream` [INFO] [stdout] --> examples/lazy2.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use futures::Stream; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> examples/select.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> examples/tryready1.rs:16:25 [INFO] [stdout] | [INFO] [stdout] 16 | Ok(Async::Ready((String::from("hello world!")))) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 16 - Ok(Async::Ready((String::from("hello world!")))) [INFO] [stdout] 16 + Ok(Async::Ready(String::from("hello world!"))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> examples/peeraddr.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/peeraddr.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/map.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fmt` [INFO] [stdout] --> examples/map.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::fmt; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> examples/map.rs:16:25 [INFO] [stdout] | [INFO] [stdout] 16 | Ok(Async::Ready((String::from("hello world!")))) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 16 - Ok(Async::Ready((String::from("hello world!")))) [INFO] [stdout] 16 + Ok(Async::Ready(String::from("hello world!"))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `future` [INFO] [stdout] --> examples/writebuf.rs:6:23 [INFO] [stdout] | [INFO] [stdout] 6 | use futures::{Future, future}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio::prelude` [INFO] [stdout] --> examples/andthen3.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use tokio::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `socket` [INFO] [stdout] --> examples/andthen3.rs:22:21 [INFO] [stdout] | [INFO] [stdout] 22 | .and_then(|(socket, buf)| { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket` [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] --> examples/fold.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let mut dst = vec![]; [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 `Result` that must be used [INFO] [stdout] --> examples/writebuf.rs:34:25 [INFO] [stdout] | [INFO] [stdout] 34 | socket.write_buf(data); [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 import: `tokio::prelude` [INFO] [stdout] --> examples/andthen2.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use tokio::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/tryready2.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> examples/tryready2.rs:17:25 [INFO] [stdout] | [INFO] [stdout] 17 | Ok(Async::Ready((String::from("hello world!")))) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 17 - Ok(Async::Ready((String::from("hello world!")))) [INFO] [stdout] 17 + Ok(Async::Ready(String::from("hello world!"))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/delay.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio::prelude` [INFO] [stdout] --> examples/delay.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use tokio::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> examples/stream.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use futures::future; [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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 12.87s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/tokio_examples-ebfba7be547f85fa) [INFO] running `Command { std: "docker" "inspect" "da1b9c56239df66a4baf44d437d4db4bed467d8c217f78063f4a1d906cf91adb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da1b9c56239df66a4baf44d437d4db4bed467d8c217f78063f4a1d906cf91adb", kill_on_drop: false }` [INFO] [stdout] da1b9c56239df66a4baf44d437d4db4bed467d8c217f78063f4a1d906cf91adb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] cafb03be777b0d1ae71974be368ebda45dba092daddb8ad7e8306240d7f3597c [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" "cafb03be777b0d1ae71974be368ebda45dba092daddb8ad7e8306240d7f3597c", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/delay.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `tokio::prelude` [INFO] [stderr] --> examples/delay.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use tokio::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/andthen2.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `tokio::prelude` [INFO] [stderr] --> examples/andthen2.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use tokio::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `future` [INFO] [stderr] --> examples/writebuf.rs:6:23 [INFO] [stderr] | [INFO] [stderr] 6 | use futures::{Future, future}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> examples/writebuf.rs:34:25 [INFO] [stderr] | [INFO] [stderr] 34 | socket.write_buf(data); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> examples/then.rs:9:37 [INFO] [stderr] | [INFO] [stderr] 9 | fn simple_func() -> Result> { [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 9 - fn simple_func() -> Result> { [INFO] [stderr] 9 + fn simple_func() -> Result> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/stream.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/fold.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let mut dst = vec![]; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> examples/andthen1.rs:7:37 [INFO] [stderr] | [INFO] [stderr] 7 | fn simple_func() -> Result> { [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 7 - fn simple_func() -> Result> { [INFO] [stderr] 7 + fn simple_func() -> Result> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/timeout.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> examples/lazy2.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #[macro_use] [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `tokio::timer::Delay` [INFO] [stderr] --> examples/lazy2.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use tokio::timer::Delay; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Duration`, `Instant` [INFO] [stderr] --> examples/lazy2.rs:9:17 [INFO] [stderr] | [INFO] [stderr] 9 | use std::time::{Duration, Instant}; [INFO] [stderr] | ^^^^^^^^ ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::ops::Add` [INFO] [stderr] --> examples/lazy2.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::ops::Add; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::Stream` [INFO] [stderr] --> examples/lazy2.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use futures::Stream; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::error::Error` [INFO] [stderr] --> examples/select.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use std::error::Error; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/map.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::fmt` [INFO] [stderr] --> examples/map.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::fmt; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> examples/map.rs:16:25 [INFO] [stderr] | [INFO] [stderr] 16 | Ok(Async::Ready((String::from("hello world!")))) [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 16 - Ok(Async::Ready((String::from("hello world!")))) [INFO] [stderr] 16 + Ok(Async::Ready(String::from("hello world!"))) [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/andthen3.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `tokio::prelude` [INFO] [stderr] --> examples/andthen3.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use tokio::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `socket` [INFO] [stderr] --> examples/andthen3.rs:22:21 [INFO] [stderr] | [INFO] [stderr] 22 | .and_then(|(socket, buf)| { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> examples/peeraddr.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #[macro_use] [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/peeraddr.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `tokio-examples` (example "delay") generated 2 warnings [INFO] [stderr] warning: `tokio-examples` (example "andthen2") generated 2 warnings [INFO] [stderr] warning: `tokio-examples` (example "writebuf") generated 2 warnings [INFO] [stderr] warning: `tokio-examples` (example "then") generated 1 warning [INFO] [stderr] warning: `tokio-examples` (example "stream") generated 1 warning [INFO] [stderr] warning: `tokio-examples` (example "fold") generated 1 warning [INFO] [stderr] warning: `tokio-examples` (example "andthen1") generated 1 warning [INFO] [stderr] warning: `tokio-examples` (example "timeout") generated 1 warning [INFO] [stderr] warning: `tokio-examples` (example "lazy2") generated 5 warnings [INFO] [stderr] warning: `tokio-examples` (example "select") generated 1 warning [INFO] [stderr] warning: `tokio-examples` (example "map") generated 3 warnings [INFO] [stderr] warning: `tokio-examples` (example "andthen3") generated 3 warnings [INFO] [stderr] warning: `tokio-examples` (example "peeraddr") generated 2 warnings [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/tryready2.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> examples/tryready2.rs:17:25 [INFO] [stderr] | [INFO] [stderr] 17 | Ok(Async::Ready((String::from("hello world!")))) [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 17 - Ok(Async::Ready((String::from("hello world!")))) [INFO] [stderr] 17 + Ok(Async::Ready(String::from("hello world!"))) [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/tryready1.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> examples/tryready1.rs:16:25 [INFO] [stderr] | [INFO] [stderr] 16 | Ok(Async::Ready((String::from("hello world!")))) [INFO] [stdout] [INFO] [stderr] | ^ ^ [INFO] [stdout] running 0 tests [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] help: remove these parentheses [INFO] [stdout] [INFO] [stderr] | [INFO] [stderr] 16 - Ok(Async::Ready((String::from("hello world!")))) [INFO] [stderr] 16 + Ok(Async::Ready(String::from("hello world!"))) [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::future` [INFO] [stderr] --> examples/stream2.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use futures::future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `futures::Future` [INFO] [stderr] --> examples/stream2.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use futures::Future; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `tokio-examples` (example "tryready2") generated 2 warnings [INFO] [stderr] warning: `tokio-examples` (example "tryready1") generated 2 warnings [INFO] [stderr] warning: `tokio-examples` (example "stream2") generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/tokio_examples-ebfba7be547f85fa) [INFO] running `Command { std: "docker" "inspect" "cafb03be777b0d1ae71974be368ebda45dba092daddb8ad7e8306240d7f3597c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cafb03be777b0d1ae71974be368ebda45dba092daddb8ad7e8306240d7f3597c", kill_on_drop: false }` [INFO] [stdout] cafb03be777b0d1ae71974be368ebda45dba092daddb8ad7e8306240d7f3597c