[INFO] crate dividebatur 0.2.1 is already in cache
[INFO] extracting crate dividebatur 0.2.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/dividebatur/0.2.1
[INFO] extracting crate dividebatur 0.2.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/dividebatur/0.2.1
[INFO] validating manifest of dividebatur-0.2.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dividebatur-0.2.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dividebatur-0.2.1
[INFO] finished frobbing dividebatur-0.2.1
[INFO] frobbed toml for dividebatur-0.2.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/dividebatur/0.2.1/Cargo.toml
[INFO] started frobbing dividebatur-0.2.1
[INFO] finished frobbing dividebatur-0.2.1
[INFO] frobbed toml for dividebatur-0.2.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/dividebatur/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing dividebatur-0.2.1 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dividebatur/0.2.1:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 1f0d74104074d3808b52dd2fd9c74522164c44effbe76b187072c746f4d64575
[INFO] running `"docker" "start" "-a" "1f0d74104074d3808b52dd2fd9c74522164c44effbe76b187072c746f4d64575"`
[INFO] [stderr]    Compiling dividebatur v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/aec/data/candidates.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     Ok((rows))
[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 function argument
[INFO] [stderr]   --> src/aec/data/candidates.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     Ok((rows))
[INFO] [stderr]    |        ^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.68s
[INFO] running `"docker" "inspect" "1f0d74104074d3808b52dd2fd9c74522164c44effbe76b187072c746f4d64575"`
[INFO] running `"docker" "rm" "-f" "1f0d74104074d3808b52dd2fd9c74522164c44effbe76b187072c746f4d64575"`
[INFO] [stdout] 1f0d74104074d3808b52dd2fd9c74522164c44effbe76b187072c746f4d64575
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dividebatur/0.2.1:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d7151f5851ff5facc7cb003c30ce5a48f9fad8256104c1a68f8ae19930056555
[INFO] running `"docker" "start" "-a" "d7151f5851ff5facc7cb003c30ce5a48f9fad8256104c1a68f8ae19930056555"`
[INFO] [stderr]    Compiling dividebatur v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/aec/data/candidates.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     Ok((rows))
[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 function argument
[INFO] [stderr]   --> src/aec/data/candidates.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     Ok((rows))
[INFO] [stderr]    |        ^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.88s
[INFO] running `"docker" "inspect" "d7151f5851ff5facc7cb003c30ce5a48f9fad8256104c1a68f8ae19930056555"`
[INFO] running `"docker" "rm" "-f" "d7151f5851ff5facc7cb003c30ce5a48f9fad8256104c1a68f8ae19930056555"`
[INFO] [stdout] d7151f5851ff5facc7cb003c30ce5a48f9fad8256104c1a68f8ae19930056555
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dividebatur/0.2.1:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 91acb283c3012b600f08b69dd85e643b83f6a775fc74178ed3d13aa8bcf23b5f
[INFO] running `"docker" "start" "-a" "91acb283c3012b600f08b69dd85e643b83f6a775fc74178ed3d13aa8bcf23b5f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dividebatur-9048716789f3c506
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test aec::data::formalpreferences::tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dividebatur-a221dea52119f1c1
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test aec::data::formalpreferences::tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dividebatur
[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" "91acb283c3012b600f08b69dd85e643b83f6a775fc74178ed3d13aa8bcf23b5f"`
[INFO] running `"docker" "rm" "-f" "91acb283c3012b600f08b69dd85e643b83f6a775fc74178ed3d13aa8bcf23b5f"`
[INFO] [stdout] 91acb283c3012b600f08b69dd85e643b83f6a775fc74178ed3d13aa8bcf23b5f