[INFO] cloning repository https://github.com/evopen/async-playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/evopen/async-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevopen%2Fasync-playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevopen%2Fasync-playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b11e4dff37c04b770cbc4b27fce8693002a045b9 [INFO] checking evopen/async-playground against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevopen%2Fasync-playground" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/evopen/async-playground on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/evopen/async-playground [INFO] finished tweaking git repo https://github.com/evopen/async-playground [INFO] tweaked toml for git repo https://github.com/evopen/async-playground written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/evopen/async-playground already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 96b5cf2f108d25dc6675090ad99097cf767a7f5065618c9ae202eefb5c1ccf75 [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" "96b5cf2f108d25dc6675090ad99097cf767a7f5065618c9ae202eefb5c1ccf75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "96b5cf2f108d25dc6675090ad99097cf767a7f5065618c9ae202eefb5c1ccf75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "96b5cf2f108d25dc6675090ad99097cf767a7f5065618c9ae202eefb5c1ccf75", kill_on_drop: false }` [INFO] [stdout] 96b5cf2f108d25dc6675090ad99097cf767a7f5065618c9ae202eefb5c1ccf75 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5c54102b8970006e00392f246799edb0f1db49e1837c63d0a00fbe75d5c8966f [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" "5c54102b8970006e00392f246799edb0f1db49e1837c63d0a00fbe75d5c8966f", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Compiling getrandom v0.1.15 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling proc-macro-nested v0.1.6 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking bytes v0.5.6 [INFO] [stderr] Checking cpuid-bool v0.1.2 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Checking opaque-debug v0.3.0 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Checking base64 v0.12.3 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking tinyvec v1.1.0 [INFO] [stderr] Checking form_urlencoded v1.0.0 [INFO] [stderr] Checking input_buffer v0.3.1 [INFO] [stderr] Checking async-channel v1.5.1 [INFO] [stderr] Checking http v0.2.2 [INFO] [stderr] Compiling crossbeam-utils v0.8.0 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling tokio v0.3.6 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Checking futures-lite v1.11.2 [INFO] [stderr] Checking kv-log-macro v1.0.7 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking getrandom v0.2.0 [INFO] [stderr] Checking polling v2.0.2 [INFO] [stderr] Checking nb-connect v1.0.2 [INFO] [stderr] Checking mio v0.7.6 [INFO] [stderr] Checking unicode-normalization v0.1.16 [INFO] [stderr] Checking rand_core v0.6.0 [INFO] [stderr] Checking block-buffer v0.9.0 [INFO] [stderr] Checking digest v0.9.0 [INFO] [stderr] Checking crossbeam-epoch v0.9.0 [INFO] [stderr] Checking crossbeam-channel v0.5.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking async-executor v1.4.0 [INFO] [stderr] Checking async-io v1.2.0 [INFO] [stderr] Checking blocking v1.0.2 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking sha-1 v0.9.2 [INFO] [stderr] Checking idna v0.2.0 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking async-global-executor v1.4.3 [INFO] [stderr] Checking rand v0.8.0 [INFO] [stderr] Checking async-std v1.8.0 [INFO] [stderr] Checking url v2.2.0 [INFO] [stderr] Checking tungstenite v0.11.1 [INFO] [stderr] Compiling pin-project-internal v1.0.1 [INFO] [stderr] Compiling futures-macro v0.3.8 [INFO] [stderr] Compiling tokio-macros v0.3.1 [INFO] [stderr] Checking pin-project v1.0.1 [INFO] [stderr] Checking futures-util v0.3.8 [INFO] [stderr] Checking futures-executor v0.3.8 [INFO] [stderr] Checking async-tungstenite v0.10.0 [INFO] [stderr] Checking futures v0.3.8 [INFO] [stderr] Checking tokio-tungstenite v0.12.0 [INFO] [stderr] Checking async-playground v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::net::SocketAddr` [INFO] [stdout] --> src/bin/client.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::net::SocketAddr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `TcpListener` [INFO] [stdout] --> src/bin/client.rs:7:18 [INFO] [stdout] | [INFO] [stdout] 7 | use tokio::net::{TcpListener, TcpStream}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio::task` [INFO] [stdout] --> src/bin/client.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use tokio::task; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tungstenite` [INFO] [stdout] --> src/bin/client.rs:10:25 [INFO] [stdout] | [INFO] [stdout] 10 | use tokio_tungstenite::{tungstenite, WebSocketStream}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> src/bin/server.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> src/bin/server.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `AsyncReadExt`, `BufReader`, `stdin` [INFO] [stdout] --> src/bin/server.rs:10:17 [INFO] [stdout] | [INFO] [stdout] 10 | use tokio::io::{stdin, AsyncBufReadExt, AsyncReadExt, BufReader}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio::time::sleep` [INFO] [stdout] --> src/bin/server.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use tokio::time::sleep; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `AsyncReadExt`, `BufReader`, `stdin` [INFO] [stdout] --> src/bin/server.rs:10:17 [INFO] [stdout] | [INFO] [stdout] 10 | use tokio::io::{stdin, AsyncBufReadExt, AsyncReadExt, BufReader}; [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio::time::sleep` [INFO] [stdout] --> src/bin/server.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use tokio::time::sleep; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/bin/server.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 22 | / loop { [INFO] [stdout] 23 | | let mut s = String::new(); [INFO] [stdout] 24 | | if rx.changed().await.is_ok() { [INFO] [stdout] 25 | | s.clone_from(&*rx.borrow()); [INFO] [stdout] ... | [INFO] [stdout] 28 | | } [INFO] [stdout] 29 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 30 | [INFO] [stdout] 31 | println!("handle outgoing finished"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/bin/client.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 15 | / loop { [INFO] [stdout] 16 | | sleep(Duration::from_secs(1)).await; [INFO] [stdout] 17 | | write_stream [INFO] [stdout] 18 | | .send(Message::Text("do you know".into())) [INFO] [stdout] ... | [INFO] [stdout] 21 | | println!("sent"); [INFO] [stdout] 22 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 23 | [INFO] [stdout] 24 | println!("handle outgoing finished"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::net::SocketAddr` [INFO] [stdout] --> src/bin/client.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::net::SocketAddr; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `TcpListener` [INFO] [stdout] --> src/bin/client.rs:7:18 [INFO] [stdout] | [INFO] [stdout] 7 | use tokio::net::{TcpListener, TcpStream}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio::task` [INFO] [stdout] --> src/bin/client.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use tokio::task; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tungstenite` [INFO] [stdout] --> src/bin/client.rs:10:25 [INFO] [stdout] | [INFO] [stdout] 10 | use tokio_tungstenite::{tungstenite, WebSocketStream}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/bin/server.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 22 | / loop { [INFO] [stdout] 23 | | let mut s = String::new(); [INFO] [stdout] 24 | | if rx.changed().await.is_ok() { [INFO] [stdout] 25 | | s.clone_from(&*rx.borrow()); [INFO] [stdout] ... | [INFO] [stdout] 28 | | } [INFO] [stdout] 29 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 30 | [INFO] [stdout] 31 | println!("handle outgoing finished"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/bin/client.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 15 | / loop { [INFO] [stdout] 16 | | sleep(Duration::from_secs(1)).await; [INFO] [stdout] 17 | | write_stream [INFO] [stdout] 18 | | .send(Message::Text("do you know".into())) [INFO] [stdout] ... | [INFO] [stdout] 21 | | println!("sent"); [INFO] [stdout] 22 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 23 | [INFO] [stdout] 24 | println!("handle outgoing finished"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 56s [INFO] running `Command { std: "docker" "inspect" "5c54102b8970006e00392f246799edb0f1db49e1837c63d0a00fbe75d5c8966f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5c54102b8970006e00392f246799edb0f1db49e1837c63d0a00fbe75d5c8966f", kill_on_drop: false }` [INFO] [stdout] 5c54102b8970006e00392f246799edb0f1db49e1837c63d0a00fbe75d5c8966f