[INFO] updating cached repository privatemani/basic_server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/privatemani/basic_server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/privatemani/basic_server" "work/ex/beta-1.38-1/sources/1.37.0/gh/privatemani/basic_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/privatemani/basic_server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/privatemani/basic_server" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/privatemani/basic_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/privatemani/basic_server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25d79b17cabdc50210b02f610b6d4d59a152c92e
[INFO] sha for GitHub repo privatemani/basic_server: 25d79b17cabdc50210b02f610b6d4d59a152c92e
[INFO] validating manifest of privatemani/basic_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 privatemani/basic_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 privatemani/basic_server
[INFO] finished frobbing privatemani/basic_server
[INFO] frobbed toml for privatemani/basic_server written to work/ex/beta-1.38-1/sources/1.37.0/gh/privatemani/basic_server/Cargo.toml
[INFO] started frobbing privatemani/basic_server
[INFO] finished frobbing privatemani/basic_server
[INFO] frobbed toml for privatemani/basic_server written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/privatemani/basic_server/Cargo.toml
[INFO] crate privatemani/basic_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 privatemani/basic_server 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/privatemani/basic_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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 7a7cec9a7b808964f3b6fce9d5e02e1f3fb72bd6a2f2c3c95407629b7182e6ea
[INFO] running `"docker" "start" "-a" "7a7cec9a7b808964f3b6fce9d5e02e1f3fb72bd6a2f2c3c95407629b7182e6ea"`
[INFO] [stderr]    Compiling network_server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]  --> src/main.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::net::{TcpStream, TcpListener};
[INFO] [stderr]   |                ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/main.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Read};
[INFO] [stderr]   |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::Shutdown`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::Shutdown;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "7a7cec9a7b808964f3b6fce9d5e02e1f3fb72bd6a2f2c3c95407629b7182e6ea"`
[INFO] running `"docker" "rm" "-f" "7a7cec9a7b808964f3b6fce9d5e02e1f3fb72bd6a2f2c3c95407629b7182e6ea"`
[INFO] [stdout] 7a7cec9a7b808964f3b6fce9d5e02e1f3fb72bd6a2f2c3c95407629b7182e6ea
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/privatemani/basic_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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] dbba3893c25cdc64e764e250c27e8ae884558b57e771343ae2d036c5c56cf89c
[INFO] running `"docker" "start" "-a" "dbba3893c25cdc64e764e250c27e8ae884558b57e771343ae2d036c5c56cf89c"`
[INFO] [stderr]    Compiling network_server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]  --> src/main.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::net::{TcpStream, TcpListener};
[INFO] [stderr]   |                ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/main.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Read};
[INFO] [stderr]   |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::Shutdown`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::Shutdown;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "dbba3893c25cdc64e764e250c27e8ae884558b57e771343ae2d036c5c56cf89c"`
[INFO] running `"docker" "rm" "-f" "dbba3893c25cdc64e764e250c27e8ae884558b57e771343ae2d036c5c56cf89c"`
[INFO] [stdout] dbba3893c25cdc64e764e250c27e8ae884558b57e771343ae2d036c5c56cf89c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/privatemani/basic_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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] c7d0d363c90d1fc40afe28b066e031899843a0796bb55179bd7bf02815a91b73
[INFO] running `"docker" "start" "-a" "c7d0d363c90d1fc40afe28b066e031899843a0796bb55179bd7bf02815a91b73"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/network_server-c74c7b3bd1e143cf
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c7d0d363c90d1fc40afe28b066e031899843a0796bb55179bd7bf02815a91b73"`
[INFO] running `"docker" "rm" "-f" "c7d0d363c90d1fc40afe28b066e031899843a0796bb55179bd7bf02815a91b73"`
[INFO] [stdout] c7d0d363c90d1fc40afe28b066e031899843a0796bb55179bd7bf02815a91b73