Dec 04 20:37:34.018 INFO checking cowang4/rusty_primes against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 20:37:34.018 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 20:37:34.496 INFO [stdout] 7e2722d3dc3eb4d24177befa1e43d4ef74559a55f4eda71280fa14477cfc0f91
Dec 04 20:37:34.499 INFO running `"docker" "start" "-a" "7e2722d3dc3eb4d24177befa1e43d4ef74559a55f4eda71280fa14477cfc0f91"`
Dec 04 20:37:36.255 INFO [stderr] usermod: no changes
Dec 04 20:37:36.295 INFO [stderr]     Checking rusty_primes v0.1.0 (/source)
Dec 04 20:37:36.806 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 20:37:36.806 INFO [stderr]   --> src/main.rs:14:9
Dec 04 20:37:36.806 INFO [stderr]    |
Dec 04 20:37:36.806 INFO [stderr] 14 | /         ((i*i)..n)
Dec 04 20:37:36.806 INFO [stderr] 15 | |             .step_by(i)
Dec 04 20:37:36.806 INFO [stderr] 16 | |             .map(|i| primes[i] = false)
Dec 04 20:37:36.806 INFO [stderr] 17 | |             .collect::<()>();
Dec 04 20:37:36.806 INFO [stderr]    | |_____________________________^
Dec 04 20:37:36.806 INFO [stderr]    |
Dec 04 20:37:36.806 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 20:37:36.806 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 20:37:36.806 INFO [stderr] 
Dec 04 20:37:36.806 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 20:37:36.806 INFO [stderr]   --> src/main.rs:30:5
Dec 04 20:37:36.806 INFO [stderr]    |
Dec 04 20:37:36.806 INFO [stderr] 30 | /     primes
Dec 04 20:37:36.806 INFO [stderr] 31 | |         .iter()
Dec 04 20:37:36.806 INFO [stderr] 32 | |         .map(|i| println!("{}", i))
Dec 04 20:37:36.806 INFO [stderr] 33 | |         .collect::<()>();
Dec 04 20:37:36.806 INFO [stderr]    | |_________________________^
Dec 04 20:37:36.806 INFO [stderr]    |
Dec 04 20:37:36.806 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 20:37:36.806 INFO [stderr] 
Dec 04 20:37:37.001 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 20:37:37.001 INFO [stderr]   --> src/main.rs:14:9
Dec 04 20:37:37.001 INFO [stderr]    |
Dec 04 20:37:37.001 INFO [stderr] 14 | /         ((i*i)..n)
Dec 04 20:37:37.001 INFO [stderr] 15 | |             .step_by(i)
Dec 04 20:37:37.001 INFO [stderr] 16 | |             .map(|i| primes[i] = false)
Dec 04 20:37:37.001 INFO [stderr] 17 | |             .collect::<()>();
Dec 04 20:37:37.001 INFO [stderr]    | |_____________________________^
Dec 04 20:37:37.001 INFO [stderr]    |
Dec 04 20:37:37.001 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 20:37:37.001 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 20:37:37.001 INFO [stderr] 
Dec 04 20:37:37.001 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 20:37:37.001 INFO [stderr]   --> src/main.rs:30:5
Dec 04 20:37:37.001 INFO [stderr]    |
Dec 04 20:37:37.001 INFO [stderr] 30 | /     primes
Dec 04 20:37:37.001 INFO [stderr] 31 | |         .iter()
Dec 04 20:37:37.001 INFO [stderr] 32 | |         .map(|i| println!("{}", i))
Dec 04 20:37:37.001 INFO [stderr] 33 | |         .collect::<()>();
Dec 04 20:37:37.001 INFO [stderr]    | |_________________________^
Dec 04 20:37:37.001 INFO [stderr]    |
Dec 04 20:37:37.001 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 20:37:37.001 INFO [stderr] 
Dec 04 20:37:37.019 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Dec 04 20:37:37.022 INFO [stderr] su: No module specific data is present
Dec 04 20:37:37.885 INFO running `"docker" "inspect" "7e2722d3dc3eb4d24177befa1e43d4ef74559a55f4eda71280fa14477cfc0f91"`
Dec 04 20:37:38.147 INFO running `"docker" "rm" "-f" "7e2722d3dc3eb4d24177befa1e43d4ef74559a55f4eda71280fa14477cfc0f91"`
Dec 04 20:37:38.526 INFO [stdout] 7e2722d3dc3eb4d24177befa1e43d4ef74559a55f4eda71280fa14477cfc0f91