[INFO] updating cached repository anyatran/web_server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/anyatran/web_server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/anyatran/web_server" "work/ex/beta-1.38-1/sources/1.37.0/gh/anyatran/web_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/anyatran/web_server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/anyatran/web_server" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/anyatran/web_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/anyatran/web_server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 27bde29d7283cb4e78214182b50ee5be4532cd3e
[INFO] sha for GitHub repo anyatran/web_server: 27bde29d7283cb4e78214182b50ee5be4532cd3e
[INFO] validating manifest of anyatran/web_server 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 anyatran/web_server 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 anyatran/web_server
[INFO] finished frobbing anyatran/web_server
[INFO] frobbed toml for anyatran/web_server written to work/ex/beta-1.38-1/sources/1.37.0/gh/anyatran/web_server/Cargo.toml
[INFO] started frobbing anyatran/web_server
[INFO] finished frobbing anyatran/web_server
[INFO] frobbed toml for anyatran/web_server written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/anyatran/web_server/Cargo.toml
[INFO] crate anyatran/web_server 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 anyatran/web_server against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/anyatran/web_server:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 202c60f1fa365851a83af51eef145832c2860c67956fc3973a6c947b34523acc
[INFO] running `"docker" "start" "-a" "202c60f1fa365851a83af51eef145832c2860c67956fc3973a6c947b34523acc"`
[INFO] [stderr]    Compiling web_server v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved imports `std::io::TcpListener`, `std::io::TcpStream`
[INFO] [stderr]  --> src/main.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{TcpListener,TcpStream};
[INFO] [stderr]   |               ^^^^^^^^^^^ ^^^^^^^^^ no `TcpStream` in `io`
[INFO] [stderr]   |               |
[INFO] [stderr]   |               no `TcpListener` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved imports `std::io::Listener`, `std::io::Acceptor`
[INFO] [stderr]  --> src/main.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{Listener,Acceptor};
[INFO] [stderr]   |               ^^^^^^^^ ^^^^^^^^ no `Acceptor` in `io`
[INFO] [stderr]   |               |
[INFO] [stderr]   |               no `Listener` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::io::net`
[INFO] [stderr]  --> src/main.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::net::tcp;
[INFO] [stderr]   |              ^^^ could not find `net` in `io`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `spawn` found for type `std::thread::Thread` in the current scope
[INFO] [stderr]   --> src/main.rs:21:29
[INFO] [stderr]    |
[INFO] [stderr] 21 |                     Thread::spawn(move|| {
[INFO] [stderr]    |                             ^^^^^ function or associated item not found in `std::thread::Thread`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `web_server`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "202c60f1fa365851a83af51eef145832c2860c67956fc3973a6c947b34523acc"`
[INFO] running `"docker" "rm" "-f" "202c60f1fa365851a83af51eef145832c2860c67956fc3973a6c947b34523acc"`
[INFO] [stdout] 202c60f1fa365851a83af51eef145832c2860c67956fc3973a6c947b34523acc