[INFO] cloning repository leshow/rust-filter-map-reduce-bench
[INFO] running `"git" "clone" "--bare" "git://github.com/leshow/rust-filter-map-reduce-bench.git" "work/cache/sources/gh/leshow/rust-filter-map-reduce-bench"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/leshow/rust-filter-map-reduce-bench'...
[INFO] running `"git" "clone" "work/cache/sources/gh/leshow/rust-filter-map-reduce-bench" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/leshow/rust-filter-map-reduce-bench"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/leshow/rust-filter-map-reduce-bench'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/leshow/rust-filter-map-reduce-bench" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/leshow/rust-filter-map-reduce-bench"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/leshow/rust-filter-map-reduce-bench'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] be964def3658f3365e1f356643269ac6bb5f3734
[INFO] sha for GitHub repo leshow/rust-filter-map-reduce-bench: be964def3658f3365e1f356643269ac6bb5f3734
[INFO] validating manifest of leshow/rust-filter-map-reduce-bench on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of leshow/rust-filter-map-reduce-bench on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing leshow/rust-filter-map-reduce-bench
[INFO] finished frobbing leshow/rust-filter-map-reduce-bench
[INFO] frobbed toml for leshow/rust-filter-map-reduce-bench written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/leshow/rust-filter-map-reduce-bench/Cargo.toml
[INFO] started frobbing leshow/rust-filter-map-reduce-bench
[INFO] finished frobbing leshow/rust-filter-map-reduce-bench
[INFO] frobbed toml for leshow/rust-filter-map-reduce-bench written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/leshow/rust-filter-map-reduce-bench/Cargo.toml
[INFO] crate leshow/rust-filter-map-reduce-bench already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking leshow/rust-filter-map-reduce-bench against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-7/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/leshow/rust-filter-map-reduce-bench:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cb97f9c8758f7550366ddf55b36bb0be34881b3caffac152d3b70f9c6881f233
[INFO] running `"docker" "start" "-a" "cb97f9c8758f7550366ddf55b36bb0be34881b3caffac152d3b70f9c6881f233"`
[INFO] [stderr]     Checking fold-test v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:23:14
[INFO] [stderr]    |
[INFO] [stderr] 23 |     for x in (0..iterations) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:23:14
[INFO] [stderr]    |
[INFO] [stderr] 23 |     for x in (0..iterations) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `fold_test`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/main.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `fold-test`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cb97f9c8758f7550366ddf55b36bb0be34881b3caffac152d3b70f9c6881f233"`
[INFO] running `"docker" "rm" "-f" "cb97f9c8758f7550366ddf55b36bb0be34881b3caffac152d3b70f9c6881f233"`
[INFO] [stdout] cb97f9c8758f7550366ddf55b36bb0be34881b3caffac152d3b70f9c6881f233