[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] 46fb5675b79a855986e1a69094d78689c1557b62 [INFO] testing cowang4/rusty_primes against beta-2021-01-01 for beta-1.50-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcowang4%2Frusty_primes" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cowang4/rusty_primes on toolchain beta-2021-01-01 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", 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-0/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" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 38f37447c80b6be47eed206978d450cc853be0c6c3d58bbe711b7b36bc7da64e [INFO] running `Command { std: "docker" "start" "-a" "38f37447c80b6be47eed206978d450cc853be0c6c3d58bbe711b7b36bc7da64e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "38f37447c80b6be47eed206978d450cc853be0c6c3d58bbe711b7b36bc7da64e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "38f37447c80b6be47eed206978d450cc853be0c6c3d58bbe711b7b36bc7da64e", kill_on_drop: false }` [INFO] [stdout] 38f37447c80b6be47eed206978d450cc853be0c6c3d58bbe711b7b36bc7da64e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6f1248be94792b1f00e1272950f10be3e52e2379d82e9f5ae9c9f116e5f47007 [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" "6f1248be94792b1f00e1272950f10be3e52e2379d82e9f5ae9c9f116e5f47007", 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] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.69s [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "6f1248be94792b1f00e1272950f10be3e52e2379d82e9f5ae9c9f116e5f47007", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f1248be94792b1f00e1272950f10be3e52e2379d82e9f5ae9c9f116e5f47007", kill_on_drop: false }` [INFO] [stdout] 6f1248be94792b1f00e1272950f10be3e52e2379d82e9f5ae9c9f116e5f47007 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6b0fb1d1e322266f2e942c270cc5ae41c6110faa12d2e1ee4d96f98163a8ef7f [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" "6b0fb1d1e322266f2e942c270cc5ae41c6110faa12d2e1ee4d96f98163a8ef7f", 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 0.81s [INFO] running `Command { std: "docker" "inspect" "6b0fb1d1e322266f2e942c270cc5ae41c6110faa12d2e1ee4d96f98163a8ef7f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6b0fb1d1e322266f2e942c270cc5ae41c6110faa12d2e1ee4d96f98163a8ef7f", kill_on_drop: false }` [INFO] [stdout] 6b0fb1d1e322266f2e942c270cc5ae41c6110faa12d2e1ee4d96f98163a8ef7f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 682d74abe72099d1d52800d25af85e9dc0c5c049b8b774b5ca88a2a25d7ab4a3 [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" "682d74abe72099d1d52800d25af85e9dc0c5c049b8b774b5ca88a2a25d7ab4a3", 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: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/rusty_primes-0c2d60893647a545 [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" "682d74abe72099d1d52800d25af85e9dc0c5c049b8b774b5ca88a2a25d7ab4a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "682d74abe72099d1d52800d25af85e9dc0c5c049b8b774b5ca88a2a25d7ab4a3", kill_on_drop: false }` [INFO] [stdout] 682d74abe72099d1d52800d25af85e9dc0c5c049b8b774b5ca88a2a25d7ab4a3