[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-1.38-1/sources/1.37.0/gh/Bakrug/tcp_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Bakrug/tcp_server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Bakrug/tcp_server" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Bakrug/tcp_server"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Bakrug/tcp_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 Bakrug/tcp_server
[INFO] finished frobbing Bakrug/tcp_server
[INFO] frobbed toml for Bakrug/tcp_server written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 Bakrug/tcp_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-6/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/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 7d1ccb3058b8a2b58d9252a4d79332643808cad46ecf3c84aa1014ae98826836
[INFO] running `"docker" "start" "-a" "7d1ccb3058b8a2b58d9252a4d79332643808cad46ecf3c84aa1014ae98826836"`
[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 0.90s
[INFO] running `"docker" "inspect" "7d1ccb3058b8a2b58d9252a4d79332643808cad46ecf3c84aa1014ae98826836"`
[INFO] running `"docker" "rm" "-f" "7d1ccb3058b8a2b58d9252a4d79332643808cad46ecf3c84aa1014ae98826836"`
[INFO] [stdout] 7d1ccb3058b8a2b58d9252a4d79332643808cad46ecf3c84aa1014ae98826836
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 44545a108af7f551d31ba8a54aaf2e2081c4a2fb6fd6ae8072e4b7111de9e409
[INFO] running `"docker" "start" "-a" "44545a108af7f551d31ba8a54aaf2e2081c4a2fb6fd6ae8072e4b7111de9e409"`
[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 0.43s
[INFO] running `"docker" "inspect" "44545a108af7f551d31ba8a54aaf2e2081c4a2fb6fd6ae8072e4b7111de9e409"`
[INFO] running `"docker" "rm" "-f" "44545a108af7f551d31ba8a54aaf2e2081c4a2fb6fd6ae8072e4b7111de9e409"`
[INFO] [stdout] 44545a108af7f551d31ba8a54aaf2e2081c4a2fb6fd6ae8072e4b7111de9e409
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] e289b9d524baaa84e932b3c9e85660d176f630d8049350d7629dec13bbbddf9e
[INFO] running `"docker" "start" "-a" "e289b9d524baaa84e932b3c9e85660d176f630d8049350d7629dec13bbbddf9e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tcp_server-42c8b8f4f31d532c
[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" "e289b9d524baaa84e932b3c9e85660d176f630d8049350d7629dec13bbbddf9e"`
[INFO] running `"docker" "rm" "-f" "e289b9d524baaa84e932b3c9e85660d176f630d8049350d7629dec13bbbddf9e"`
[INFO] [stdout] e289b9d524baaa84e932b3c9e85660d176f630d8049350d7629dec13bbbddf9e