Dec 19 19:12:17.099 INFO checking cesare/rust-euler against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:12:17.099 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/cesare/rust-euler:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:12:17.575 INFO [stdout] b21644d74b2032b7df2f69cfc74ff69b0beea44d7ebac86f5af7b47398d77418
Dec 19 19:12:17.577 INFO running `"docker" "start" "-a" "b21644d74b2032b7df2f69cfc74ff69b0beea44d7ebac86f5af7b47398d77418"`
Dec 19 19:12:19.747 INFO [stderr] warning: An explicit [[bin]] section is specified in Cargo.toml which currently
Dec 19 19:12:19.748 INFO [stderr] disables Cargo from automatically inferring other binary targets.
Dec 19 19:12:19.748 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 19 19:12:19.748 INFO [stderr] files will be included as a binary target:
Dec 19 19:12:19.748 INFO [stderr] 
Dec 19 19:12:19.748 INFO [stderr] * /opt/crater/workdir/src/main.rs
Dec 19 19:12:19.748 INFO [stderr] 
Dec 19 19:12:19.748 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 19 19:12:19.748 INFO [stderr] ready to be compiled as a binary target today. You can future-proof yourself
Dec 19 19:12:19.748 INFO [stderr] and disable this warning by adding `autobins = false` to your [package]
Dec 19 19:12:19.748 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 19 19:12:19.748 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 19 19:12:19.748 INFO [stderr] 
Dec 19 19:12:19.748 INFO [stderr] For more information on this warning you can consult
Dec 19 19:12:19.748 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 19 19:12:19.760 INFO [stderr]     Checking euler v0.1.0 (/opt/crater/workdir)
Dec 19 19:12:20.522 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 19:12:20.522 INFO [stderr]   --> src/problem_005_smallest_multiple.rs:42:42
Dec 19 19:12:20.522 INFO [stderr]    |
Dec 19 19:12:20.523 INFO [stderr] 42 |     let product = results.iter().fold(1, (|a, b| a * b));
Dec 19 19:12:20.523 INFO [stderr]    |                                          ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 19:12:20.523 INFO [stderr]    |
Dec 19 19:12:20.524 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 19:12:20.524 INFO [stderr] 
Dec 19 19:12:20.924 INFO [stderr] warning: method is never used: `reset`
Dec 19 19:12:20.925 INFO [stderr]    --> src/prime.rs:134:5
Dec 19 19:12:20.925 INFO [stderr]     |
Dec 19 19:12:20.925 INFO [stderr] 134 |     pub fn reset(&mut self) {
Dec 19 19:12:20.926 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:12:20.940 INFO [stderr]     |
Dec 19 19:12:20.941 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 19:12:20.941 INFO [stderr] 
Dec 19 19:12:21.252 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 19:12:21.253 INFO [stderr]   --> src/problem_005_smallest_multiple.rs:42:42
Dec 19 19:12:21.253 INFO [stderr]    |
Dec 19 19:12:21.253 INFO [stderr] 42 |     let product = results.iter().fold(1, (|a, b| a * b));
Dec 19 19:12:21.253 INFO [stderr]    |                                          ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 19:12:21.253 INFO [stderr]    |
Dec 19 19:12:21.253 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 19:12:21.253 INFO [stderr] 
Dec 19 19:12:21.685 INFO [stderr] warning: method is never used: `reset`
Dec 19 19:12:21.685 INFO [stderr]    --> src/prime.rs:134:5
Dec 19 19:12:21.685 INFO [stderr]     |
Dec 19 19:12:21.685 INFO [stderr] 134 |     pub fn reset(&mut self) {
Dec 19 19:12:21.685 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:12:21.685 INFO [stderr]     |
Dec 19 19:12:21.685 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 19:12:21.685 INFO [stderr] 
Dec 19 19:12:22.420 INFO [stderr] warning: method is never used: `reset`
Dec 19 19:12:22.421 INFO [stderr]    --> src/prime.rs:134:5
Dec 19 19:12:22.421 INFO [stderr]     |
Dec 19 19:12:22.421 INFO [stderr] 134 |     pub fn reset(&mut self) {
Dec 19 19:12:22.422 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:12:22.422 INFO [stderr]     |
Dec 19 19:12:22.422 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 19:12:22.423 INFO [stderr] 
Dec 19 19:12:23.216 INFO [stderr] warning: method is never used: `reset`
Dec 19 19:12:23.217 INFO [stderr]    --> src/prime.rs:134:5
Dec 19 19:12:23.217 INFO [stderr]     |
Dec 19 19:12:23.217 INFO [stderr] 134 |     pub fn reset(&mut self) {
Dec 19 19:12:23.217 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:12:23.218 INFO [stderr]     |
Dec 19 19:12:23.218 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 19:12:23.218 INFO [stderr] 
Dec 19 19:12:23.278 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.54s
Dec 19 19:12:24.452 INFO running `"docker" "inspect" "b21644d74b2032b7df2f69cfc74ff69b0beea44d7ebac86f5af7b47398d77418"`
Dec 19 19:12:24.678 INFO running `"docker" "rm" "-f" "b21644d74b2032b7df2f69cfc74ff69b0beea44d7ebac86f5af7b47398d77418"`
Dec 19 19:12:24.969 INFO [stdout] b21644d74b2032b7df2f69cfc74ff69b0beea44d7ebac86f5af7b47398d77418