[INFO] updating cached repository cowang4/rusty_primes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cowang4/rusty_primes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cowang4/rusty_primes" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/cowang4/rusty_primes"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/cowang4/rusty_primes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cowang4/rusty_primes" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/cowang4/rusty_primes"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/cowang4/rusty_primes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 46fb5675b79a855986e1a69094d78689c1557b62
[INFO] sha for GitHub repo cowang4/rusty_primes: 46fb5675b79a855986e1a69094d78689c1557b62
[INFO] validating manifest of cowang4/rusty_primes on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cowang4/rusty_primes on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cowang4/rusty_primes
[INFO] finished frobbing cowang4/rusty_primes
[INFO] frobbed toml for cowang4/rusty_primes written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/cowang4/rusty_primes/Cargo.toml
[INFO] started frobbing cowang4/rusty_primes
[INFO] finished frobbing cowang4/rusty_primes
[INFO] frobbed toml for cowang4/rusty_primes written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/cowang4/rusty_primes/Cargo.toml
[INFO] crate cowang4/rusty_primes has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cowang4/rusty_primes against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/cowang4/rusty_primes:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] f8b5a9b19ef945f7f1062c0f72ac47f261244050731c5abb830a06638527f3d4
[INFO] running `"docker" "start" "-a" "f8b5a9b19ef945f7f1062c0f72ac47f261244050731c5abb830a06638527f3d4"`
[INFO] [stderr]    Compiling rusty_primes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::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 `std::iter::Iterator::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]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "f8b5a9b19ef945f7f1062c0f72ac47f261244050731c5abb830a06638527f3d4"`
[INFO] running `"docker" "rm" "-f" "f8b5a9b19ef945f7f1062c0f72ac47f261244050731c5abb830a06638527f3d4"`
[INFO] [stdout] f8b5a9b19ef945f7f1062c0f72ac47f261244050731c5abb830a06638527f3d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/cowang4/rusty_primes:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8bc4fa7b8dc0a64f4c4bae9d684ce9af5ba4037573d42e895cd6002d77caf1b9
[INFO] running `"docker" "start" "-a" "8bc4fa7b8dc0a64f4c4bae9d684ce9af5ba4037573d42e895cd6002d77caf1b9"`
[INFO] [stderr]    Compiling rusty_primes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::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 `std::iter::Iterator::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]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `"docker" "inspect" "8bc4fa7b8dc0a64f4c4bae9d684ce9af5ba4037573d42e895cd6002d77caf1b9"`
[INFO] running `"docker" "rm" "-f" "8bc4fa7b8dc0a64f4c4bae9d684ce9af5ba4037573d42e895cd6002d77caf1b9"`
[INFO] [stdout] 8bc4fa7b8dc0a64f4c4bae9d684ce9af5ba4037573d42e895cd6002d77caf1b9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/cowang4/rusty_primes:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 2acc32f057fab875aec9e0351bc9102100d7d2b52495ae7bbcb76fcc1f50141d
[INFO] running `"docker" "start" "-a" "2acc32f057fab875aec9e0351bc9102100d7d2b52495ae7bbcb76fcc1f50141d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rusty_primes-e17407fc03cb6198
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2acc32f057fab875aec9e0351bc9102100d7d2b52495ae7bbcb76fcc1f50141d"`
[INFO] running `"docker" "rm" "-f" "2acc32f057fab875aec9e0351bc9102100d7d2b52495ae7bbcb76fcc1f50141d"`
[INFO] [stdout] 2acc32f057fab875aec9e0351bc9102100d7d2b52495ae7bbcb76fcc1f50141d