[INFO] updating cached repository Bakrug/tcp_server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Bakrug/tcp_server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Bakrug/tcp_server" "work/ex/beta-1.37-6/sources/1.36.0/gh/Bakrug/tcp_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Bakrug/tcp_server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Bakrug/tcp_server" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Bakrug/tcp_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Bakrug/tcp_server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 14343e33dcfd27892b48b9e3b8126ae6a28f7c3b
[INFO] sha for GitHub repo Bakrug/tcp_server: 14343e33dcfd27892b48b9e3b8126ae6a28f7c3b
[INFO] validating manifest of Bakrug/tcp_server on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Bakrug/tcp_server on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Bakrug/tcp_server
[INFO] finished frobbing Bakrug/tcp_server
[INFO] frobbed toml for Bakrug/tcp_server written to work/ex/beta-1.37-6/sources/1.36.0/gh/Bakrug/tcp_server/Cargo.toml
[INFO] started frobbing Bakrug/tcp_server
[INFO] finished frobbing Bakrug/tcp_server
[INFO] frobbed toml for Bakrug/tcp_server written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Bakrug/tcp_server/Cargo.toml
[INFO] crate Bakrug/tcp_server already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Bakrug/tcp_server against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Bakrug/tcp_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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 3bc7921635aa02a19b72e4aaf3a5f42af62766a2a5731c41c75764f7f746186a
[INFO] running `"docker" "start" "-a" "3bc7921635aa02a19b72e4aaf3a5f42af62766a2a5731c41c75764f7f746186a"`
[INFO] [stderr]    Compiling tcp_server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/server.rs:53:20
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn handle_commands(input: String) {
[INFO] [stderr]    |                    ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/test.rs:10:17
[INFO] [stderr]    |
[INFO] [stderr] 10 |             for i in 0..100000 {
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> src/test.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for a in 0..4 {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_commands`
[INFO] [stderr]   --> src/server.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn handle_commands(input: String) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "3bc7921635aa02a19b72e4aaf3a5f42af62766a2a5731c41c75764f7f746186a"`
[INFO] running `"docker" "rm" "-f" "3bc7921635aa02a19b72e4aaf3a5f42af62766a2a5731c41c75764f7f746186a"`
[INFO] [stdout] 3bc7921635aa02a19b72e4aaf3a5f42af62766a2a5731c41c75764f7f746186a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Bakrug/tcp_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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8529ad01079a5fd7c5cc3c748fb218c432fc43346f949c4b8bd919c1658c79f4
[INFO] running `"docker" "start" "-a" "8529ad01079a5fd7c5cc3c748fb218c432fc43346f949c4b8bd919c1658c79f4"`
[INFO] [stderr]    Compiling tcp_server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/server.rs:53:20
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn handle_commands(input: String) {
[INFO] [stderr]    |                    ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/test.rs:10:17
[INFO] [stderr]    |
[INFO] [stderr] 10 |             for i in 0..100000 {
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]  --> src/test.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     for a in 0..4 {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_commands`
[INFO] [stderr]   --> src/server.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn handle_commands(input: String) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "8529ad01079a5fd7c5cc3c748fb218c432fc43346f949c4b8bd919c1658c79f4"`
[INFO] running `"docker" "rm" "-f" "8529ad01079a5fd7c5cc3c748fb218c432fc43346f949c4b8bd919c1658c79f4"`
[INFO] [stdout] 8529ad01079a5fd7c5cc3c748fb218c432fc43346f949c4b8bd919c1658c79f4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Bakrug/tcp_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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 4d91104ee4663b249a35b2b0cbd98fd8d17d235868340210d69f6f5186674940
[INFO] running `"docker" "start" "-a" "4d91104ee4663b249a35b2b0cbd98fd8d17d235868340210d69f6f5186674940"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tcp_server-9c341807de9c3228
[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" "4d91104ee4663b249a35b2b0cbd98fd8d17d235868340210d69f6f5186674940"`
[INFO] running `"docker" "rm" "-f" "4d91104ee4663b249a35b2b0cbd98fd8d17d235868340210d69f6f5186674940"`
[INFO] [stdout] 4d91104ee4663b249a35b2b0cbd98fd8d17d235868340210d69f6f5186674940