[INFO] cloning repository https://github.com/cowang4/rusty_primes [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cowang4/rusty_primes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcowang4%2Frusty_primes", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcowang4%2Frusty_primes'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 21bc62830ae1854e493e277aa730cb01c23bc4b6 [INFO] testing cowang4/rusty_primes against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcowang4%2Frusty_primes" "/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/cowang4/rusty_primes on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/cowang4/rusty_primes [INFO] finished tweaking git repo https://github.com/cowang4/rusty_primes [INFO] tweaked toml for git repo https://github.com/cowang4/rusty_primes written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/cowang4/rusty_primes already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 15f7d697606250bd78a1bacfb4c610ca449cf386fb6dde03c55b5383f78cd107 [INFO] running `Command { std: "docker" "start" "-a" "15f7d697606250bd78a1bacfb4c610ca449cf386fb6dde03c55b5383f78cd107", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "15f7d697606250bd78a1bacfb4c610ca449cf386fb6dde03c55b5383f78cd107", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "15f7d697606250bd78a1bacfb4c610ca449cf386fb6dde03c55b5383f78cd107", kill_on_drop: false }` [INFO] [stdout] 15f7d697606250bd78a1bacfb4c610ca449cf386fb6dde03c55b5383f78cd107 [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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5cc089fb4ca97e79870d6c4e2f1f30b387947c4c81ef287ce0443da607f6939b [INFO] running `Command { std: "docker" "start" "-a" "5cc089fb4ca97e79870d6c4e2f1f30b387947c4c81ef287ce0443da607f6939b", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling rusty_primes v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `collect` that must be used [INFO] [stdout] --> src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | / ((i*i)..n) [INFO] [stdout] 15 | | .step_by(i) [INFO] [stdout] 16 | | .map(|i| primes[i] = false) [INFO] [stdout] 17 | | .collect::<()>(); [INFO] [stdout] | |_____________________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `collect` that must be used [INFO] [stdout] --> src/main.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | / primes [INFO] [stdout] 31 | | .iter() [INFO] [stdout] 32 | | .map(|i| println!("{}", i)) [INFO] [stdout] 33 | | .collect::<()>(); [INFO] [stdout] | |_________________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.71s [INFO] running `Command { std: "docker" "inspect" "5cc089fb4ca97e79870d6c4e2f1f30b387947c4c81ef287ce0443da607f6939b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5cc089fb4ca97e79870d6c4e2f1f30b387947c4c81ef287ce0443da607f6939b", kill_on_drop: false }` [INFO] [stdout] 5cc089fb4ca97e79870d6c4e2f1f30b387947c4c81ef287ce0443da607f6939b [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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9ab029eabae33ac2e3b10c08867a178fe8782bd57cc0eb2762192eccee3b6b26 [INFO] running `Command { std: "docker" "start" "-a" "9ab029eabae33ac2e3b10c08867a178fe8782bd57cc0eb2762192eccee3b6b26", kill_on_drop: false }` [INFO] [stderr] Compiling rusty_primes v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `collect` that must be used [INFO] [stdout] --> src/main.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | / ((i*i)..n) [INFO] [stdout] 15 | | .step_by(i) [INFO] [stdout] 16 | | .map(|i| primes[i] = false) [INFO] [stdout] 17 | | .collect::<()>(); [INFO] [stdout] | |_____________________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `collect` that must be used [INFO] [stdout] --> src/main.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | / primes [INFO] [stdout] 31 | | .iter() [INFO] [stdout] 32 | | .map(|i| println!("{}", i)) [INFO] [stdout] 33 | | .collect::<()>(); [INFO] [stdout] | |_________________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.68s [INFO] running `Command { std: "docker" "inspect" "9ab029eabae33ac2e3b10c08867a178fe8782bd57cc0eb2762192eccee3b6b26", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9ab029eabae33ac2e3b10c08867a178fe8782bd57cc0eb2762192eccee3b6b26", kill_on_drop: false }` [INFO] [stdout] 9ab029eabae33ac2e3b10c08867a178fe8782bd57cc0eb2762192eccee3b6b26 [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" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 6d26d81a281ebe1c2760445aaa90a799af45e6be0fbc3156f96dc0f8405bc073 [INFO] running `Command { std: "docker" "start" "-a" "6d26d81a281ebe1c2760445aaa90a799af45e6be0fbc3156f96dc0f8405bc073", kill_on_drop: false }` [INFO] [stderr] warning: unused return value of `collect` that must be used [INFO] [stderr] --> src/main.rs:14:9 [INFO] [stderr] | [INFO] [stderr] 14 | / ((i*i)..n) [INFO] [stderr] 15 | | .step_by(i) [INFO] [stderr] 16 | | .map(|i| primes[i] = false) [INFO] [stderr] 17 | | .collect::<()>(); [INFO] [stderr] | |_____________________________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] warning: unused return value of `collect` that must be used [INFO] [stderr] --> src/main.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | / primes [INFO] [stderr] 31 | | .iter() [INFO] [stderr] 32 | | .map(|i| println!("{}", i)) [INFO] [stderr] 33 | | .collect::<()>(); [INFO] [stderr] | |_________________________^ [INFO] [stderr] | [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] warning: `rusty_primes` (bin "rusty_primes" test) generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rusty_primes-03d4fb80c6c1840e) [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" "6d26d81a281ebe1c2760445aaa90a799af45e6be0fbc3156f96dc0f8405bc073", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6d26d81a281ebe1c2760445aaa90a799af45e6be0fbc3156f96dc0f8405bc073", kill_on_drop: false }` [INFO] [stdout] 6d26d81a281ebe1c2760445aaa90a799af45e6be0fbc3156f96dc0f8405bc073