Dec 04 20:37:37.310 INFO checking cowang4/rusty_primes against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 20:37:37.310 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 20:37:37.816 INFO [stdout] 0938c457045e3eab22453f8a9e06484ab65cbf16c8be7ee10886e8bf55202841
Dec 04 20:37:37.818 INFO running `"docker" "start" "-a" "0938c457045e3eab22453f8a9e06484ab65cbf16c8be7ee10886e8bf55202841"`
Dec 04 20:37:39.618 INFO [stderr] usermod: no changes
Dec 04 20:37:39.667 INFO [stderr]     Checking rusty_primes v0.1.0 (/source)
Dec 04 20:37:40.055 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 20:37:40.055 INFO [stderr]   --> src/main.rs:14:9
Dec 04 20:37:40.055 INFO [stderr]    |
Dec 04 20:37:40.055 INFO [stderr] 14 | /         ((i*i)..n)
Dec 04 20:37:40.055 INFO [stderr] 15 | |             .step_by(i)
Dec 04 20:37:40.055 INFO [stderr] 16 | |             .map(|i| primes[i] = false)
Dec 04 20:37:40.055 INFO [stderr] 17 | |             .collect::<()>();
Dec 04 20:37:40.055 INFO [stderr]    | |_____________________________^
Dec 04 20:37:40.055 INFO [stderr]    |
Dec 04 20:37:40.055 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 20:37:40.055 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 20:37:40.055 INFO [stderr] 
Dec 04 20:37:40.055 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 20:37:40.055 INFO [stderr]   --> src/main.rs:30:5
Dec 04 20:37:40.055 INFO [stderr]    |
Dec 04 20:37:40.055 INFO [stderr] 30 | /     primes
Dec 04 20:37:40.055 INFO [stderr] 31 | |         .iter()
Dec 04 20:37:40.055 INFO [stderr] 32 | |         .map(|i| println!("{}", i))
Dec 04 20:37:40.055 INFO [stderr] 33 | |         .collect::<()>();
Dec 04 20:37:40.055 INFO [stderr]    | |_________________________^
Dec 04 20:37:40.055 INFO [stderr]    |
Dec 04 20:37:40.055 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 20:37:40.055 INFO [stderr] 
Dec 04 20:37:40.339 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 20:37:40.339 INFO [stderr]   --> src/main.rs:14:9
Dec 04 20:37:40.339 INFO [stderr]    |
Dec 04 20:37:40.339 INFO [stderr] 14 | /         ((i*i)..n)
Dec 04 20:37:40.339 INFO [stderr] 15 | |             .step_by(i)
Dec 04 20:37:40.339 INFO [stderr] 16 | |             .map(|i| primes[i] = false)
Dec 04 20:37:40.339 INFO [stderr] 17 | |             .collect::<()>();
Dec 04 20:37:40.339 INFO [stderr]    | |_____________________________^
Dec 04 20:37:40.339 INFO [stderr]    |
Dec 04 20:37:40.339 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 20:37:40.339 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 20:37:40.339 INFO [stderr] 
Dec 04 20:37:40.339 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 04 20:37:40.339 INFO [stderr]   --> src/main.rs:30:5
Dec 04 20:37:40.339 INFO [stderr]    |
Dec 04 20:37:40.339 INFO [stderr] 30 | /     primes
Dec 04 20:37:40.339 INFO [stderr] 31 | |         .iter()
Dec 04 20:37:40.339 INFO [stderr] 32 | |         .map(|i| println!("{}", i))
Dec 04 20:37:40.339 INFO [stderr] 33 | |         .collect::<()>();
Dec 04 20:37:40.339 INFO [stderr]    | |_________________________^
Dec 04 20:37:40.339 INFO [stderr]    |
Dec 04 20:37:40.339 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 04 20:37:40.339 INFO [stderr] 
Dec 04 20:37:40.366 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
Dec 04 20:37:40.368 INFO [stderr] su: No module specific data is present
Dec 04 20:37:40.955 INFO running `"docker" "inspect" "0938c457045e3eab22453f8a9e06484ab65cbf16c8be7ee10886e8bf55202841"`
Dec 04 20:37:41.161 INFO running `"docker" "rm" "-f" "0938c457045e3eab22453f8a9e06484ab65cbf16c8be7ee10886e8bf55202841"`
Dec 04 20:37:41.518 INFO [stdout] 0938c457045e3eab22453f8a9e06484ab65cbf16c8be7ee10886e8bf55202841