[INFO] cloning repository https://github.com/paulodiniz/socket_example_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paulodiniz/socket_example_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulodiniz%2Fsocket_example_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulodiniz%2Fsocket_example_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 158c17288eb9f2fe1196712b5c9825f21c1cac7b
[INFO] testing paulodiniz/socket_example_rust against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulodiniz%2Fsocket_example_rust" "/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/paulodiniz/socket_example_rust on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paulodiniz/socket_example_rust
[INFO] finished tweaking git repo https://github.com/paulodiniz/socket_example_rust
[INFO] tweaked toml for git repo https://github.com/paulodiniz/socket_example_rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/paulodiniz/socket_example_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] 6702abfffba7a375471dd0fe85361a5be9cb66f848a7b46a4e885b6a4f56abaa
[INFO] running `Command { std: "docker" "start" "-a" "6702abfffba7a375471dd0fe85361a5be9cb66f848a7b46a4e885b6a4f56abaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6702abfffba7a375471dd0fe85361a5be9cb66f848a7b46a4e885b6a4f56abaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6702abfffba7a375471dd0fe85361a5be9cb66f848a7b46a4e885b6a4f56abaa", kill_on_drop: false }`
[INFO] [stdout] 6702abfffba7a375471dd0fe85361a5be9cb66f848a7b46a4e885b6a4f56abaa
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76f4b7cfc875f586b745eed427c1368f11c890336ab199053db01c9aad87ae56
[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" "76f4b7cfc875f586b745eed427c1368f11c890336ab199053db01c9aad87ae56", kill_on_drop: false }`
[INFO] [stderr]    Compiling sock_client v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `net` in `io`
[INFO] [stdout]  --> src/main.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::net::tcp::TcpStream;
[INFO] [stdout]   |              ^^^ could not find `net` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `TcpStream`
[INFO] [stdout]  --> src/main.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 |   let mut socket = TcpStream::connect("127.0.0.1:2000").unwrap();
[INFO] [stdout]   |                    ^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::TcpStream;
[INFO] [stdout]   |
[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 E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sock_client` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "76f4b7cfc875f586b745eed427c1368f11c890336ab199053db01c9aad87ae56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76f4b7cfc875f586b745eed427c1368f11c890336ab199053db01c9aad87ae56", kill_on_drop: false }`
[INFO] [stdout] 76f4b7cfc875f586b745eed427c1368f11c890336ab199053db01c9aad87ae56