[INFO] updating cached repository CugeDe/-RUST-FFI
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CugeDe/-RUST-FFI
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CugeDe/-RUST-FFI" "work/ex/beta-1.38-1/sources/1.37.0/gh/CugeDe/-RUST-FFI"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/CugeDe/-RUST-FFI'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CugeDe/-RUST-FFI" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CugeDe/-RUST-FFI"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CugeDe/-RUST-FFI'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1b48384db2696eceedf82a03f42bd7a563f6fcb3
[INFO] sha for GitHub repo CugeDe/-RUST-FFI: 1b48384db2696eceedf82a03f42bd7a563f6fcb3
[INFO] validating manifest of CugeDe/-RUST-FFI 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 CugeDe/-RUST-FFI 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 CugeDe/-RUST-FFI
[INFO] finished frobbing CugeDe/-RUST-FFI
[INFO] frobbed toml for CugeDe/-RUST-FFI written to work/ex/beta-1.38-1/sources/1.37.0/gh/CugeDe/-RUST-FFI/Cargo.toml
[INFO] started frobbing CugeDe/-RUST-FFI
[INFO] finished frobbing CugeDe/-RUST-FFI
[INFO] frobbed toml for CugeDe/-RUST-FFI written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CugeDe/-RUST-FFI/Cargo.toml
[INFO] crate CugeDe/-RUST-FFI 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 CugeDe/-RUST-FFI against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CugeDe/-RUST-FFI:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 591aadb3398c20113eb9756f5b433eca474a41d24b2581712288f8fe42e50849
[INFO] running `"docker" "start" "-a" "591aadb3398c20113eb9756f5b433eca474a41d24b2581712288f8fe42e50849"`
[INFO] [stderr]    Compiling ffi v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/lib.rs:32:16
[INFO] [stderr]    |
[INFO] [stderr] 32 |       for _ in (0..25_000_000)
[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 0.88s
[INFO] running `"docker" "inspect" "591aadb3398c20113eb9756f5b433eca474a41d24b2581712288f8fe42e50849"`
[INFO] running `"docker" "rm" "-f" "591aadb3398c20113eb9756f5b433eca474a41d24b2581712288f8fe42e50849"`
[INFO] [stdout] 591aadb3398c20113eb9756f5b433eca474a41d24b2581712288f8fe42e50849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CugeDe/-RUST-FFI:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4a2ea9b5ed5fb0b65a36ce7fc0002578347ad41a8a7081436aa32fd1f8467cf8
[INFO] running `"docker" "start" "-a" "4a2ea9b5ed5fb0b65a36ce7fc0002578347ad41a8a7081436aa32fd1f8467cf8"`
[INFO] [stderr]    Compiling ffi v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/lib.rs:32:16
[INFO] [stderr]    |
[INFO] [stderr] 32 |       for _ in (0..25_000_000)
[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 0.76s
[INFO] running `"docker" "inspect" "4a2ea9b5ed5fb0b65a36ce7fc0002578347ad41a8a7081436aa32fd1f8467cf8"`
[INFO] running `"docker" "rm" "-f" "4a2ea9b5ed5fb0b65a36ce7fc0002578347ad41a8a7081436aa32fd1f8467cf8"`
[INFO] [stdout] 4a2ea9b5ed5fb0b65a36ce7fc0002578347ad41a8a7081436aa32fd1f8467cf8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CugeDe/-RUST-FFI:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] b7da9c6f59e377303f5092cc730242f67cc585f313e418876172a38ae8697941
[INFO] running `"docker" "start" "-a" "b7da9c6f59e377303f5092cc730242f67cc585f313e418876172a38ae8697941"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ffi-8ad75c126a2b5552
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b7da9c6f59e377303f5092cc730242f67cc585f313e418876172a38ae8697941"`
[INFO] running `"docker" "rm" "-f" "b7da9c6f59e377303f5092cc730242f67cc585f313e418876172a38ae8697941"`
[INFO] [stdout] b7da9c6f59e377303f5092cc730242f67cc585f313e418876172a38ae8697941