[INFO] updating cached repository fmendez/euler-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fmendez/euler-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fmendez/euler-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/fmendez/euler-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fmendez/euler-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fmendez/euler-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fmendez/euler-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fmendez/euler-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ddd2ac7cf5dbdf15a545df3d3e7f5ea6146464c7
[INFO] sha for GitHub repo fmendez/euler-rs: ddd2ac7cf5dbdf15a545df3d3e7f5ea6146464c7
[INFO] validating manifest of fmendez/euler-rs on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of fmendez/euler-rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing fmendez/euler-rs
[INFO] finished frobbing fmendez/euler-rs
[INFO] frobbed toml for fmendez/euler-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/fmendez/euler-rs/Cargo.toml
[INFO] started frobbing fmendez/euler-rs
[INFO] finished frobbing fmendez/euler-rs
[INFO] frobbed toml for fmendez/euler-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fmendez/euler-rs/Cargo.toml
[INFO] crate fmendez/euler-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing fmendez/euler-rs against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fmendez/euler-rs:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] d967a0691d6d1105e7f7b1f5f114e22f9b48d688e2ebab9ab0453f2955698832
[INFO] running `"docker" "start" "-a" "d967a0691d6d1105e7f7b1f5f114e22f9b48d688e2ebab9ab0453f2955698832"`
[INFO] [stderr]    Compiling euler-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `sum_multiples_of_a_and_b_below_z`
[INFO] [stderr]  --> src/problems/problem_001.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn sum_multiples_of_a_and_b_below_z(a: u64, b: u64, z: u64) -> u64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `divible_by`
[INFO] [stderr]  --> src/problems/problem_001.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn divible_by(n: u64, z: u64) -> u64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_even_fibonacci_not_exceeding_x`
[INFO] [stderr]  --> src/problems/problem_002.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn sum_even_fibonacci_not_exceeding_x(target: u64) -> u64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "d967a0691d6d1105e7f7b1f5f114e22f9b48d688e2ebab9ab0453f2955698832"`
[INFO] running `"docker" "rm" "-f" "d967a0691d6d1105e7f7b1f5f114e22f9b48d688e2ebab9ab0453f2955698832"`
[INFO] [stdout] d967a0691d6d1105e7f7b1f5f114e22f9b48d688e2ebab9ab0453f2955698832
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fmendez/euler-rs:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 972ae93369b1ae7c5c3c6dafc72eb26c0de113aed3f7d42d574d0ce853ca364f
[INFO] running `"docker" "start" "-a" "972ae93369b1ae7c5c3c6dafc72eb26c0de113aed3f7d42d574d0ce853ca364f"`
[INFO] [stderr]    Compiling euler-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `"docker" "inspect" "972ae93369b1ae7c5c3c6dafc72eb26c0de113aed3f7d42d574d0ce853ca364f"`
[INFO] running `"docker" "rm" "-f" "972ae93369b1ae7c5c3c6dafc72eb26c0de113aed3f7d42d574d0ce853ca364f"`
[INFO] [stdout] 972ae93369b1ae7c5c3c6dafc72eb26c0de113aed3f7d42d574d0ce853ca364f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fmendez/euler-rs:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 0239aa7c562bcc316c4af9a1bb35217801627c6363169a178191fa7d4437d0a7
[INFO] running `"docker" "start" "-a" "0239aa7c562bcc316c4af9a1bb35217801627c6363169a178191fa7d4437d0a7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/euler_rs-88eb7fa66f5091d9
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test problems::problem_001::test::sum_multiples_of_a_and_b_below_z_test ... ok
[INFO] [stdout] test problems::problem_002::test::sum_even_fibonacci_not_exceeding_x_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/euler_rs-1abffee6f0b0ae78
[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] [stderr]    Doc-tests euler-rs
[INFO] [stdout] 
[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" "0239aa7c562bcc316c4af9a1bb35217801627c6363169a178191fa7d4437d0a7"`
[INFO] running `"docker" "rm" "-f" "0239aa7c562bcc316c4af9a1bb35217801627c6363169a178191fa7d4437d0a7"`
[INFO] [stdout] 0239aa7c562bcc316c4af9a1bb35217801627c6363169a178191fa7d4437d0a7