[INFO] cloning repository https://github.com/DeltaManiac/tiny_rusty_raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DeltaManiac/tiny_rusty_raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaManiac%2Ftiny_rusty_raytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaManiac%2Ftiny_rusty_raytracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66f6b91449ac4e8d17139eb99b73773972144f79
[INFO] testing DeltaManiac/tiny_rusty_raytracer against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaManiac%2Ftiny_rusty_raytracer" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DeltaManiac/tiny_rusty_raytracer on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DeltaManiac/tiny_rusty_raytracer
[INFO] finished tweaking git repo https://github.com/DeltaManiac/tiny_rusty_raytracer
[INFO] tweaked toml for git repo https://github.com/DeltaManiac/tiny_rusty_raytracer written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/DeltaManiac/tiny_rusty_raytracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b83fe982230009aa3b4f4349ec62b9ec73cf4592a93b4b11e16d924b74d71c0
[INFO] running `Command { std: "docker" "start" "-a" "7b83fe982230009aa3b4f4349ec62b9ec73cf4592a93b4b11e16d924b74d71c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b83fe982230009aa3b4f4349ec62b9ec73cf4592a93b4b11e16d924b74d71c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b83fe982230009aa3b4f4349ec62b9ec73cf4592a93b4b11e16d924b74d71c0", kill_on_drop: false }`
[INFO] [stdout] 7b83fe982230009aa3b4f4349ec62b9ec73cf4592a93b4b11e16d924b74d71c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2b6beb1b02c5a1679b2eef25a781af45aa514d708f695908729062e751f7086
[INFO] running `Command { std: "docker" "start" "-a" "c2b6beb1b02c5a1679b2eef25a781af45aa514d708f695908729062e751f7086", kill_on_drop: false }`
[INFO] [stderr]    Compiling tiny_rusty_raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let buffer = BufWriter::new(file);
[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: function is never used: `render`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn render() {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "c2b6beb1b02c5a1679b2eef25a781af45aa514d708f695908729062e751f7086", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2b6beb1b02c5a1679b2eef25a781af45aa514d708f695908729062e751f7086", kill_on_drop: false }`
[INFO] [stdout] c2b6beb1b02c5a1679b2eef25a781af45aa514d708f695908729062e751f7086
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b89e17790b0e2133d60bda58ce6315e4918eb2a9a2ccb757ef1580b074f9369b
[INFO] running `Command { std: "docker" "start" "-a" "b89e17790b0e2133d60bda58ce6315e4918eb2a9a2ccb757ef1580b074f9369b", kill_on_drop: false }`
[INFO] [stderr]    Compiling tiny_rusty_raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let buffer = BufWriter::new(file);
[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: function is never used: `render`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn render() {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b89e17790b0e2133d60bda58ce6315e4918eb2a9a2ccb757ef1580b074f9369b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b89e17790b0e2133d60bda58ce6315e4918eb2a9a2ccb757ef1580b074f9369b", kill_on_drop: false }`
[INFO] [stdout] b89e17790b0e2133d60bda58ce6315e4918eb2a9a2ccb757ef1580b074f9369b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 378bd397aef07dd29529c828e48086006e5b0751cbafe37f94755093c4f37e8a
[INFO] running `Command { std: "docker" "start" "-a" "378bd397aef07dd29529c828e48086006e5b0751cbafe37f94755093c4f37e8a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let buffer = BufWriter::new(file);
[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: function is never used: `render`
[INFO] [stderr]  --> src/main.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn render() {
[INFO] [stderr]   |    ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `tiny_rusty_raytracer` (bin "tiny_rusty_raytracer" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tiny_rusty_raytracer-0c67349da8559b66)
[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" "378bd397aef07dd29529c828e48086006e5b0751cbafe37f94755093c4f37e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "378bd397aef07dd29529c828e48086006e5b0751cbafe37f94755093c4f37e8a", kill_on_drop: false }`
[INFO] [stdout] 378bd397aef07dd29529c828e48086006e5b0751cbafe37f94755093c4f37e8a