[INFO] cloning repository https://github.com/SirGFM/rusty-but-fast
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SirGFM/rusty-but-fast" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirGFM%2Frusty-but-fast"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirGFM%2Frusty-but-fast'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7041eb5cb6ffe597cd40ebd73ebb4a7aa85fd540
[INFO] checking SirGFM/rusty-but-fast against master#339f574809bf8e4166b8de3cdbe7df181d37af3d for pr-71896
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirGFM%2Frusty-but-fast" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SirGFM/rusty-but-fast on toolchain 339f574809bf8e4166b8de3cdbe7df181d37af3d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/SirGFM/rusty-but-fast
[INFO] finished tweaking git repo https://github.com/SirGFM/rusty-but-fast
[INFO] tweaked toml for git repo https://github.com/SirGFM/rusty-but-fast written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/SirGFM/rusty-but-fast already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aecd349212a4286856d8e329be9c6dd2ed71208e5ea9e7992e7198cf1b24475b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "aecd349212a4286856d8e329be9c6dd2ed71208e5ea9e7992e7198cf1b24475b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking ctrlc v3.1.4
[INFO] [stderr]     Checking rusty-but-fast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `conn`
[INFO] [stderr]  --> src/main.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn handle_client(conn: std::net::TcpStream, addr: std::net::SocketAddr, running: std::sync::Arc<AtomicBool>) {
[INFO] [stderr]   |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `running`
[INFO] [stderr]  --> src/main.rs:4:73
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn handle_client(conn: std::net::TcpStream, addr: std::net::SocketAddr, running: std::sync::Arc<AtomicBool>) {
[INFO] [stderr]   |                                                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_running`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `conn`
[INFO] [stderr]  --> src/main.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn handle_client(conn: std::net::TcpStream, addr: std::net::SocketAddr, running: std::sync::Arc<AtomicBool>) {
[INFO] [stderr]   |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `running`
[INFO] [stderr]  --> src/main.rs:4:73
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn handle_client(conn: std::net::TcpStream, addr: std::net::SocketAddr, running: std::sync::Arc<AtomicBool>) {
[INFO] [stderr]   |                                                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_running`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.69s
[INFO] running `"docker" "inspect" "aecd349212a4286856d8e329be9c6dd2ed71208e5ea9e7992e7198cf1b24475b"`
[INFO] running `"docker" "rm" "-f" "aecd349212a4286856d8e329be9c6dd2ed71208e5ea9e7992e7198cf1b24475b"`
[INFO] [stdout] aecd349212a4286856d8e329be9c6dd2ed71208e5ea9e7992e7198cf1b24475b