[INFO] cloning repository https://github.com/realSuffix/sound_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/realSuffix/sound_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrealSuffix%2Fsound_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrealSuffix%2Fsound_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4a3a54f44ca60d3511771923a0e3858b6b079920
[INFO] testing realSuffix/sound_server against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrealSuffix%2Fsound_server" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/realSuffix/sound_server on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/realSuffix/sound_server
[INFO] finished tweaking git repo https://github.com/realSuffix/sound_server
[INFO] tweaked toml for git repo https://github.com/realSuffix/sound_server written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/realSuffix/sound_server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 260cfa9ce3ee4aafd189a9525b37cf80b1e9e97273b598f161da2d614866ec90
[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" "260cfa9ce3ee4aafd189a9525b37cf80b1e9e97273b598f161da2d614866ec90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "260cfa9ce3ee4aafd189a9525b37cf80b1e9e97273b598f161da2d614866ec90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "260cfa9ce3ee4aafd189a9525b37cf80b1e9e97273b598f161da2d614866ec90", kill_on_drop: false }`
[INFO] [stdout] 260cfa9ce3ee4aafd189a9525b37cf80b1e9e97273b598f161da2d614866ec90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65f7b4e505173d48391dc36bbe85d1ffbed565af22af45fb86b274cc998424db
[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" "65f7b4e505173d48391dc36bbe85d1ffbed565af22af45fb86b274cc998424db", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]    Compiling ringbuf v0.2.1
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling thiserror v1.0.20
[INFO] [stderr]    Compiling sound_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]   --> src/connection_handler.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut buffer = [0; 1024];
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/connection_handler.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn handle(mut stream: TcpStream) {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/connection_handler.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut buffer = [0; 1024];
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.20s
[INFO] running `Command { std: "docker" "inspect" "65f7b4e505173d48391dc36bbe85d1ffbed565af22af45fb86b274cc998424db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65f7b4e505173d48391dc36bbe85d1ffbed565af22af45fb86b274cc998424db", kill_on_drop: false }`
[INFO] [stdout] 65f7b4e505173d48391dc36bbe85d1ffbed565af22af45fb86b274cc998424db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b06cd3acace3a9dc9ed8f09944ef53fb891f8666141da4a1a2673f2281962ca
[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" "2b06cd3acace3a9dc9ed8f09944ef53fb891f8666141da4a1a2673f2281962ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling sound_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]   --> src/connection_handler.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut buffer = [0; 1024];
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/connection_handler.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn handle(mut stream: TcpStream) {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/connection_handler.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut buffer = [0; 1024];
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "2b06cd3acace3a9dc9ed8f09944ef53fb891f8666141da4a1a2673f2281962ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b06cd3acace3a9dc9ed8f09944ef53fb891f8666141da4a1a2673f2281962ca", kill_on_drop: false }`
[INFO] [stdout] 2b06cd3acace3a9dc9ed8f09944ef53fb891f8666141da4a1a2673f2281962ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 7584a895e56f6a073781a51164190472622d6e9f53a3a55802f331d4e2ae340a
[INFO] running `Command { std: "docker" "start" "-a" "7584a895e56f6a073781a51164190472622d6e9f53a3a55802f331d4e2ae340a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]   --> src/connection_handler.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let mut buffer = [0; 1024];
[INFO] [stderr]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/connection_handler.rs:15:19
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn handle(mut stream: TcpStream) {
[INFO] [stderr]    |                   ----^^^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/connection_handler.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let mut buffer = [0; 1024];
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sound_server-669574cee5777554
[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 `Command { std: "docker" "inspect" "7584a895e56f6a073781a51164190472622d6e9f53a3a55802f331d4e2ae340a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7584a895e56f6a073781a51164190472622d6e9f53a3a55802f331d4e2ae340a", kill_on_drop: false }`
[INFO] [stdout] 7584a895e56f6a073781a51164190472622d6e9f53a3a55802f331d4e2ae340a