[INFO] updating cached repository https://github.com/paulodiniz/socket_example_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 158c17288eb9f2fe1196712b5c9825f21c1cac7b
[INFO] testing paulodiniz/socket_example_rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulodiniz%2Fsocket_example_rust" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paulodiniz/socket_example_rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-11/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 `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] baff6fc13a13ed9480cdda272ea849d22ef1e58d37cb57c6aee465156911ed01
[INFO] running `"docker" "start" "-a" "baff6fc13a13ed9480cdda272ea849d22ef1e58d37cb57c6aee465156911ed01"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling sock_client v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `net` in `io`
[INFO] [stderr]  --> src/main.rs:1:14
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::net::tcp::TcpStream;
[INFO] [stderr]   |              ^^^ could not find `net` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `TcpStream`
[INFO] [stderr]  --> src/main.rs:4:20
[INFO] [stderr]   |
[INFO] [stderr] 4 |   let mut socket = TcpStream::connect("127.0.0.1:2000").unwrap();
[INFO] [stderr]   |                    ^^^^^^^^^ use of undeclared type or module `TcpStream`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `sock_client`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "baff6fc13a13ed9480cdda272ea849d22ef1e58d37cb57c6aee465156911ed01"`
[INFO] running `"docker" "rm" "-f" "baff6fc13a13ed9480cdda272ea849d22ef1e58d37cb57c6aee465156911ed01"`
[INFO] [stdout] baff6fc13a13ed9480cdda272ea849d22ef1e58d37cb57c6aee465156911ed01