[INFO] cloning repository https://github.com/Bakrug/tcp_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bakrug/tcp_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBakrug%2Ftcp_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBakrug%2Ftcp_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14343e33dcfd27892b48b9e3b8126ae6a28f7c3b
[INFO] testing Bakrug/tcp_server against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBakrug%2Ftcp_server" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bakrug/tcp_server on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Bakrug/tcp_server
[INFO] finished tweaking git repo https://github.com/Bakrug/tcp_server
[INFO] tweaked toml for git repo https://github.com/Bakrug/tcp_server written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Bakrug/tcp_server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c38c6b5691401f829437bcb2978f8c6c006bd31d88e42e85c8c75ade2c34ca03
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c38c6b5691401f829437bcb2978f8c6c006bd31d88e42e85c8c75ade2c34ca03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c38c6b5691401f829437bcb2978f8c6c006bd31d88e42e85c8c75ade2c34ca03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c38c6b5691401f829437bcb2978f8c6c006bd31d88e42e85c8c75ade2c34ca03", kill_on_drop: false }`
[INFO] [stdout] c38c6b5691401f829437bcb2978f8c6c006bd31d88e42e85c8c75ade2c34ca03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb8fe6ac95e8648b6e506d6cad40f38f1d6e3e7056f39e26b45f525434c682bb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cb8fe6ac95e8648b6e506d6cad40f38f1d6e3e7056f39e26b45f525434c682bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcp_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/server.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn handle_commands(input: String) {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/test.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |             for i in 0..100000 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/test.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     for a in 0..4 {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `handle_commands`
[INFO] [stdout]   --> src/server.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn handle_commands(input: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "cb8fe6ac95e8648b6e506d6cad40f38f1d6e3e7056f39e26b45f525434c682bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb8fe6ac95e8648b6e506d6cad40f38f1d6e3e7056f39e26b45f525434c682bb", kill_on_drop: false }`
[INFO] [stdout] cb8fe6ac95e8648b6e506d6cad40f38f1d6e3e7056f39e26b45f525434c682bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d24cc51bdf9a9f22b08c3a4d72a7a45fccbb25721963afe4ce1084bb5d433f00
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d24cc51bdf9a9f22b08c3a4d72a7a45fccbb25721963afe4ce1084bb5d433f00", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcp_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/server.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn handle_commands(input: String) {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/test.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |             for i in 0..100000 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]  --> src/test.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     for a in 0..4 {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `handle_commands`
[INFO] [stdout]   --> src/server.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn handle_commands(input: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "d24cc51bdf9a9f22b08c3a4d72a7a45fccbb25721963afe4ce1084bb5d433f00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d24cc51bdf9a9f22b08c3a4d72a7a45fccbb25721963afe4ce1084bb5d433f00", kill_on_drop: false }`
[INFO] [stdout] d24cc51bdf9a9f22b08c3a4d72a7a45fccbb25721963afe4ce1084bb5d433f00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7ccf714497f849af52ac5d773e0c59b87862ae80a7512a8b31ba12dd37255b60
[INFO] running `Command { std: "docker" "start" "-a" "7ccf714497f849af52ac5d773e0c59b87862ae80a7512a8b31ba12dd37255b60", kill_on_drop: false }`
[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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_commands`
[INFO] [stderr]   --> src/server.rs:53:4
[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] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tcp_server-331576b5e25e2b47)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7ccf714497f849af52ac5d773e0c59b87862ae80a7512a8b31ba12dd37255b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ccf714497f849af52ac5d773e0c59b87862ae80a7512a8b31ba12dd37255b60", kill_on_drop: false }`
[INFO] [stdout] 7ccf714497f849af52ac5d773e0c59b87862ae80a7512a8b31ba12dd37255b60