[INFO] updating cached repository paulodiniz/socket_example_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/paulodiniz/socket_example_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/paulodiniz/socket_example_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/paulodiniz/socket_example_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/paulodiniz/socket_example_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/paulodiniz/socket_example_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/paulodiniz/socket_example_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/paulodiniz/socket_example_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 158c17288eb9f2fe1196712b5c9825f21c1cac7b
[INFO] sha for GitHub repo paulodiniz/socket_example_rust: 158c17288eb9f2fe1196712b5c9825f21c1cac7b
[INFO] validating manifest of paulodiniz/socket_example_rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of paulodiniz/socket_example_rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing paulodiniz/socket_example_rust
[INFO] finished frobbing paulodiniz/socket_example_rust
[INFO] frobbed toml for paulodiniz/socket_example_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/paulodiniz/socket_example_rust/Cargo.toml
[INFO] started frobbing paulodiniz/socket_example_rust
[INFO] finished frobbing paulodiniz/socket_example_rust
[INFO] frobbed toml for paulodiniz/socket_example_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/paulodiniz/socket_example_rust/Cargo.toml
[INFO] crate paulodiniz/socket_example_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing paulodiniz/socket_example_rust against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/paulodiniz/socket_example_rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4e0cc0b7fb6a63a568536e28cfea57f80f305b2778011457ee9412fd19d974e3
[INFO] running `"docker" "start" "-a" "4e0cc0b7fb6a63a568536e28cfea57f80f305b2778011457ee9412fd19d974e3"`
[INFO] [stderr]    Compiling sock_client v0.0.1 (/opt/crater/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] warning: unused import: `std::io::net::tcp::TcpStream`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::net::tcp::TcpStream;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[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" "4e0cc0b7fb6a63a568536e28cfea57f80f305b2778011457ee9412fd19d974e3"`
[INFO] running `"docker" "rm" "-f" "4e0cc0b7fb6a63a568536e28cfea57f80f305b2778011457ee9412fd19d974e3"`
[INFO] [stdout] 4e0cc0b7fb6a63a568536e28cfea57f80f305b2778011457ee9412fd19d974e3