[INFO] cloning repository https://github.com/Keksoj/tcp_echoer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Keksoj/tcp_echoer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeksoj%2Ftcp_echoer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeksoj%2Ftcp_echoer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 25e719cc76ef664e5babdb0c67543f2a19ecd8cb [INFO] checking Keksoj/tcp_echoer against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeksoj%2Ftcp_echoer" "/workspace/builds/worker-11/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Keksoj/tcp_echoer on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Keksoj/tcp_echoer [INFO] finished tweaking git repo https://github.com/Keksoj/tcp_echoer [INFO] tweaked toml for git repo https://github.com/Keksoj/tcp_echoer written to /workspace/builds/worker-11/source/Cargo.toml [INFO] crate git repo https://github.com/Keksoj/tcp_echoer already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] bdf7206430b08dbccff92ab4a6ec7707ed662ea5e77a2cf75705f41fe884d9c3 [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" "bdf7206430b08dbccff92ab4a6ec7707ed662ea5e77a2cf75705f41fe884d9c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bdf7206430b08dbccff92ab4a6ec7707ed662ea5e77a2cf75705f41fe884d9c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bdf7206430b08dbccff92ab4a6ec7707ed662ea5e77a2cf75705f41fe884d9c3", kill_on_drop: false }` [INFO] [stdout] bdf7206430b08dbccff92ab4a6ec7707ed662ea5e77a2cf75705f41fe884d9c3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1f044007c91033e3dbcabbd7812e5c7e9d954e4f132c0a676613f362173cb85a [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" "1f044007c91033e3dbcabbd7812e5c7e9d954e4f132c0a676613f362173cb85a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.69 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Compiling tokio v1.5.0 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking regex v1.4.5 [INFO] [stderr] Checking thread_local v1.1.3 [INFO] [stderr] Checking log v0.4.14 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Checking lock_api v0.4.3 [INFO] [stderr] Checking tracing-core v0.1.17 [INFO] [stderr] Checking sharded-slab v0.1.1 [INFO] [stderr] Checking tracing v0.1.25 [INFO] [stderr] Checking tracing-log v0.1.2 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking matchers v0.0.1 [INFO] [stderr] Checking getrandom v0.2.2 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking signal-hook-registry v1.3.0 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking mio v0.7.11 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Compiling futures-macro v0.3.14 [INFO] [stderr] Compiling tokio-macros v1.1.0 [INFO] [stderr] Checking futures-util v0.3.14 [INFO] [stderr] Checking futures-executor v0.3.14 [INFO] [stderr] Checking futures v0.3.14 [INFO] [stderr] Checking serde v1.0.125 [INFO] [stderr] Checking tracing-serde v0.1.2 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking tracing-subscriber v0.2.17 [INFO] [stderr] Checking tcp_echoer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::boxed::Box` [INFO] [stdout] --> src/lib.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::boxed::Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/lib.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `debug`, `info`, `warn` [INFO] [stdout] --> src/lib.rs:10:15 [INFO] [stdout] | [INFO] [stdout] 10 | use tracing::{debug, info, warn}; [INFO] [stdout] | ^^^^^ ^^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::boxed::Box` [INFO] [stdout] --> src/lib.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::boxed::Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/lib.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `debug`, `info`, `warn` [INFO] [stdout] --> src/lib.rs:10:15 [INFO] [stdout] | [INFO] [stdout] 10 | use tracing::{debug, info, warn}; [INFO] [stdout] | ^^^^^ ^^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Error`, `Result` [INFO] [stdout] --> src/server.rs:1:23 [INFO] [stdout] | [INFO] [stdout] 1 | use anyhow::{Context, Error, Result}; [INFO] [stdout] | ^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `TcpStream`, `self` [INFO] [stdout] --> src/server.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | io::{self, AsyncReadExt, AsyncWriteExt}, [INFO] [stdout] | ^^^^ [INFO] [stdout] 5 | net::{TcpListener, TcpStream}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `debug` [INFO] [stdout] --> src/server.rs:7:15 [INFO] [stdout] | [INFO] [stdout] 7 | use tracing::{debug, info}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Error`, `Result` [INFO] [stdout] --> src/server.rs:1:23 [INFO] [stdout] | [INFO] [stdout] 1 | use anyhow::{Context, Error, Result}; [INFO] [stdout] | ^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `TcpStream`, `self` [INFO] [stdout] --> src/server.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | io::{self, AsyncReadExt, AsyncWriteExt}, [INFO] [stdout] | ^^^^ [INFO] [stdout] 5 | net::{TcpListener, TcpStream}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `debug` [INFO] [stdout] --> src/server.rs:7:15 [INFO] [stdout] | [INFO] [stdout] 7 | use tracing::{debug, info}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/server.rs:61:5 [INFO] [stdout] | [INFO] [stdout] 21 | / loop { [INFO] [stdout] 22 | | // bind a listener to the socket address [INFO] [stdout] 23 | | [INFO] [stdout] 24 | | // we call it socket but it's a TcpStream, it implements AsyncRead and AsyncWrite [INFO] [stdout] ... | [INFO] [stdout] 59 | | }); [INFO] [stdout] 60 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 61 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `JoinAll`, `join_all` [INFO] [stdout] --> src/client.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | use futures::future::{join_all, JoinAll}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/client.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::future::Future` [INFO] [stdout] --> src/client.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::future::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `SocketAddr` [INFO] [stdout] --> src/client.rs:6:16 [INFO] [stdout] | [INFO] [stdout] 6 | use std::net::{IpAddr, Ipv4Addr, SocketAddr}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `task::JoinHandle` [INFO] [stdout] --> src/client.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 15 | task::JoinHandle, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `debug`, `warn` [INFO] [stdout] --> src/client.rs:17:15 [INFO] [stdout] | [INFO] [stdout] 17 | use tracing::{debug, info, warn}; [INFO] [stdout] | ^^^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `JoinAll`, `join_all` [INFO] [stdout] --> src/client.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | use futures::future::{join_all, JoinAll}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/client.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::future::Future` [INFO] [stdout] --> src/client.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::future::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, `SocketAddr` [INFO] [stdout] --> src/client.rs:6:16 [INFO] [stdout] | [INFO] [stdout] 6 | use std::net::{IpAddr, Ipv4Addr, SocketAddr}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `task::JoinHandle` [INFO] [stdout] --> src/client.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 15 | task::JoinHandle, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `debug`, `warn` [INFO] [stdout] --> src/client.rs:17:15 [INFO] [stdout] | [INFO] [stdout] 17 | use tracing::{debug, info, warn}; [INFO] [stdout] | ^^^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/server.rs:61:5 [INFO] [stdout] | [INFO] [stdout] 21 | / loop { [INFO] [stdout] 22 | | // bind a listener to the socket address [INFO] [stdout] 23 | | [INFO] [stdout] 24 | | // we call it socket but it's a TcpStream, it implements AsyncRead and AsyncWrite [INFO] [stdout] ... | [INFO] [stdout] 59 | | }); [INFO] [stdout] 60 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 61 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `received_frame` [INFO] [stdout] --> src/client.rs:82:29 [INFO] [stdout] | [INFO] [stdout] 82 | let received_frame = lib::CustomFrame::from_bytes(received_data) [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_received_frame` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `make_a_list_of_futures` [INFO] [stdout] --> src/client.rs:151:4 [INFO] [stdout] | [INFO] [stdout] 151 | fn make_a_list_of_futures( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `send_a_word` [INFO] [stdout] --> src/client.rs:169:10 [INFO] [stdout] | [INFO] [stdout] 169 | async fn send_a_word(mpsc_tx: Sender, word: String) -> anyhow::Result<()> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `received_frame` [INFO] [stdout] --> src/client.rs:82:29 [INFO] [stdout] | [INFO] [stdout] 82 | let received_frame = lib::CustomFrame::from_bytes(received_data) [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_received_frame` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `make_a_list_of_futures` [INFO] [stdout] --> src/client.rs:151:4 [INFO] [stdout] | [INFO] [stdout] 151 | fn make_a_list_of_futures( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `send_a_word` [INFO] [stdout] --> src/client.rs:169:10 [INFO] [stdout] | [INFO] [stdout] 169 | async fn send_a_word(mpsc_tx: Sender, word: String) -> anyhow::Result<()> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 04s [INFO] running `Command { std: "docker" "inspect" "1f044007c91033e3dbcabbd7812e5c7e9d954e4f132c0a676613f362173cb85a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1f044007c91033e3dbcabbd7812e5c7e9d954e4f132c0a676613f362173cb85a", kill_on_drop: false }` [INFO] [stdout] 1f044007c91033e3dbcabbd7812e5c7e9d954e4f132c0a676613f362173cb85a