[INFO] crate sysfs-class 0.1.1 is already in cache
[INFO] extracting crate sysfs-class 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/sysfs-class/0.1.1
[INFO] extracting crate sysfs-class 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sysfs-class/0.1.1
[INFO] validating manifest of sysfs-class-0.1.1 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 sysfs-class-0.1.1 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 sysfs-class-0.1.1
[INFO] finished frobbing sysfs-class-0.1.1
[INFO] frobbed toml for sysfs-class-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/sysfs-class/0.1.1/Cargo.toml
[INFO] started frobbing sysfs-class-0.1.1
[INFO] finished frobbing sysfs-class-0.1.1
[INFO] frobbed toml for sysfs-class-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sysfs-class/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 sysfs-class-0.1.1 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/sysfs-class/0.1.1:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 84949a8b46ef76bc3cce0c96ac62a4ac96c3529047ba2426ee53f95a81dfa8aa
[INFO] running `"docker" "start" "-a" "84949a8b46ef76bc3cce0c96ac62a4ac96c3529047ba2426ee53f95a81dfa8aa"`
[INFO] [stderr]    Compiling sysfs-class v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/block.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub type SlaveIter = Box<Iterator<Item = Result<PathBuf>>>;
[INFO] [stderr]   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<PathBuf>>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "84949a8b46ef76bc3cce0c96ac62a4ac96c3529047ba2426ee53f95a81dfa8aa"`
[INFO] running `"docker" "rm" "-f" "84949a8b46ef76bc3cce0c96ac62a4ac96c3529047ba2426ee53f95a81dfa8aa"`
[INFO] [stdout] 84949a8b46ef76bc3cce0c96ac62a4ac96c3529047ba2426ee53f95a81dfa8aa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/sysfs-class/0.1.1:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8e46443116b2a4ff59a507704ed66e1908eff3df30f199c553ef1de9bbc7ebb6
[INFO] running `"docker" "start" "-a" "8e46443116b2a4ff59a507704ed66e1908eff3df30f199c553ef1de9bbc7ebb6"`
[INFO] [stderr]    Compiling sysfs-class v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/block.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub type SlaveIter = Box<Iterator<Item = Result<PathBuf>>>;
[INFO] [stderr]   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<PathBuf>>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "8e46443116b2a4ff59a507704ed66e1908eff3df30f199c553ef1de9bbc7ebb6"`
[INFO] running `"docker" "rm" "-f" "8e46443116b2a4ff59a507704ed66e1908eff3df30f199c553ef1de9bbc7ebb6"`
[INFO] [stdout] 8e46443116b2a4ff59a507704ed66e1908eff3df30f199c553ef1de9bbc7ebb6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/sysfs-class/0.1.1:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 7602a81a14cf679bf04d5738d0ef242b5a2989544291a74858e9bacb42ee711a
[INFO] running `"docker" "start" "-a" "7602a81a14cf679bf04d5738d0ef242b5a2989544291a74858e9bacb42ee711a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sysfs_class-bd4af59db1ce0166
[INFO] [stderr]    Doc-tests sysfs-class
[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] [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" "7602a81a14cf679bf04d5738d0ef242b5a2989544291a74858e9bacb42ee711a"`
[INFO] running `"docker" "rm" "-f" "7602a81a14cf679bf04d5738d0ef242b5a2989544291a74858e9bacb42ee711a"`
[INFO] [stdout] 7602a81a14cf679bf04d5738d0ef242b5a2989544291a74858e9bacb42ee711a