[INFO] cloning repository https://github.com/reedobrien/-tokio-echo [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reedobrien/-tokio-echo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freedobrien%2F-tokio-echo", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freedobrien%2F-tokio-echo'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 65e475970a460ece11e42295eab4a10891fbfa34 [INFO] testing reedobrien/-tokio-echo against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freedobrien%2F-tokio-echo" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/reedobrien/-tokio-echo on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/reedobrien/-tokio-echo [INFO] finished tweaking git repo https://github.com/reedobrien/-tokio-echo [INFO] tweaked toml for git repo https://github.com/reedobrien/-tokio-echo written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/reedobrien/-tokio-echo already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ca71d54264243a1efa2db787cb85bbedae60fa3ab306bfd4b2857c15cdda59b5 [INFO] running `Command { std: "docker" "start" "-a" "ca71d54264243a1efa2db787cb85bbedae60fa3ab306bfd4b2857c15cdda59b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ca71d54264243a1efa2db787cb85bbedae60fa3ab306bfd4b2857c15cdda59b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca71d54264243a1efa2db787cb85bbedae60fa3ab306bfd4b2857c15cdda59b5", kill_on_drop: false }` [INFO] [stdout] ca71d54264243a1efa2db787cb85bbedae60fa3ab306bfd4b2857c15cdda59b5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c366ade3735b304212c3b477648819f50727887521ad057d4b850843804700b9 [INFO] running `Command { std: "docker" "start" "-a" "c366ade3735b304212c3b477648819f50727887521ad057d4b850843804700b9", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.85 [INFO] [stderr] Compiling syn v1.0.60 [INFO] [stderr] Compiling parking_lot_core v0.8.2 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling mio v0.7.7 [INFO] [stderr] Compiling signal-hook-registry v1.3.0 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling tokio-macros v1.1.0 [INFO] [stderr] Compiling tokio v1.2.0 [INFO] [stderr] Compiling echo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let mut listener = TcpListener::bind("127.0.0.1:6142").await.unwrap(); [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 25.42s [INFO] running `Command { std: "docker" "inspect" "c366ade3735b304212c3b477648819f50727887521ad057d4b850843804700b9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c366ade3735b304212c3b477648819f50727887521ad057d4b850843804700b9", kill_on_drop: false }` [INFO] [stdout] c366ade3735b304212c3b477648819f50727887521ad057d4b850843804700b9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b4b7a136a0d6bac134ae5be831e59246b6b31fa1cd32983e8d5e22face0b2c2f [INFO] running `Command { std: "docker" "start" "-a" "b4b7a136a0d6bac134ae5be831e59246b6b31fa1cd32983e8d5e22face0b2c2f", kill_on_drop: false }` [INFO] [stderr] Compiling echo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let mut listener = TcpListener::bind("127.0.0.1:6142").await.unwrap(); [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 variable: `write_task` [INFO] [stdout] --> examples/echo-client.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let write_task = tokio::spawn(async move { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_task` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.76s [INFO] running `Command { std: "docker" "inspect" "b4b7a136a0d6bac134ae5be831e59246b6b31fa1cd32983e8d5e22face0b2c2f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b4b7a136a0d6bac134ae5be831e59246b6b31fa1cd32983e8d5e22face0b2c2f", kill_on_drop: false }` [INFO] [stdout] b4b7a136a0d6bac134ae5be831e59246b6b31fa1cd32983e8d5e22face0b2c2f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 24b04cf9d68939fe99c0d389724f30ef5d7bde53689e845a83711d347f7f37dd [INFO] running `Command { std: "docker" "start" "-a" "24b04cf9d68939fe99c0d389724f30ef5d7bde53689e845a83711d347f7f37dd", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `write_task` [INFO] [stderr] --> examples/echo-client.rs:9:9 [INFO] [stderr] | [INFO] [stderr] 9 | let write_task = tokio::spawn(async move { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_write_task` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:20:9 [INFO] [stderr] | [INFO] [stderr] 20 | let mut listener = TcpListener::bind("127.0.0.1:6142").await.unwrap(); [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: `echo` (example "echo-client") generated 1 warning [INFO] [stderr] warning: `echo` (bin "echo" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/echo-593a0cba729cdde8) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "24b04cf9d68939fe99c0d389724f30ef5d7bde53689e845a83711d347f7f37dd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "24b04cf9d68939fe99c0d389724f30ef5d7bde53689e845a83711d347f7f37dd", kill_on_drop: false }` [INFO] [stdout] 24b04cf9d68939fe99c0d389724f30ef5d7bde53689e845a83711d347f7f37dd