[INFO] crate prev-iter 0.1.2 is already in cache
[INFO] extracting crate prev-iter 0.1.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/prev-iter/0.1.2
[INFO] extracting crate prev-iter 0.1.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prev-iter/0.1.2
[INFO] validating manifest of prev-iter-0.1.2 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 prev-iter-0.1.2 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 prev-iter-0.1.2
[INFO] finished frobbing prev-iter-0.1.2
[INFO] frobbed toml for prev-iter-0.1.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/prev-iter/0.1.2/Cargo.toml
[INFO] started frobbing prev-iter-0.1.2
[INFO] finished frobbing prev-iter-0.1.2
[INFO] frobbed toml for prev-iter-0.1.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prev-iter/0.1.2/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 prev-iter-0.1.2 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-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prev-iter/0.1.2:/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] cdfb79d1e334b382adadfd4361bfeaf6b2a40e8fe7e2a6b1fdf9ef8db005afbf
[INFO] running `"docker" "start" "-a" "cdfb79d1e334b382adadfd4361bfeaf6b2a40e8fe7e2a6b1fdf9ef8db005afbf"`
[INFO] [stderr]    Compiling prev-iter v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `"docker" "inspect" "cdfb79d1e334b382adadfd4361bfeaf6b2a40e8fe7e2a6b1fdf9ef8db005afbf"`
[INFO] running `"docker" "rm" "-f" "cdfb79d1e334b382adadfd4361bfeaf6b2a40e8fe7e2a6b1fdf9ef8db005afbf"`
[INFO] [stdout] cdfb79d1e334b382adadfd4361bfeaf6b2a40e8fe7e2a6b1fdf9ef8db005afbf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prev-iter/0.1.2:/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] cc737e6869da1285bbc734430499d61f47a266b301424d9b1fa44b1541d3883f
[INFO] running `"docker" "start" "-a" "cc737e6869da1285bbc734430499d61f47a266b301424d9b1fa44b1541d3883f"`
[INFO] [stderr]    Compiling prev-iter v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "cc737e6869da1285bbc734430499d61f47a266b301424d9b1fa44b1541d3883f"`
[INFO] running `"docker" "rm" "-f" "cc737e6869da1285bbc734430499d61f47a266b301424d9b1fa44b1541d3883f"`
[INFO] [stdout] cc737e6869da1285bbc734430499d61f47a266b301424d9b1fa44b1541d3883f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/prev-iter/0.1.2:/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] 011f28c7d419543ac8121abcc66224feb23e969877854856af5c52c5be2697f8
[INFO] running `"docker" "start" "-a" "011f28c7d419543ac8121abcc66224feb23e969877854856af5c52c5be2697f8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/prev_iter-b26cfd666e2b9bf4
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_prev_peek ... ok
[INFO] [stdout] test tests::test_prev ... ok
[INFO] [stdout] test tests::test_peek ... ok
[INFO] [stdout] test tests::test_next ... ok
[INFO] [stderr]    Doc-tests prev-iter
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - PrevPeekable<I>::prev_peek (line 148) ... ok
[INFO] [stdout] test src/lib.rs - PrevPeekable<I>::prev (line 110) ... ok
[INFO] [stdout] test src/lib.rs - PrevPeekable<I>::new (line 41) ... ok
[INFO] [stdout] test src/lib.rs - PrevPeekable<I>::peek (line 76) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "011f28c7d419543ac8121abcc66224feb23e969877854856af5c52c5be2697f8"`
[INFO] running `"docker" "rm" "-f" "011f28c7d419543ac8121abcc66224feb23e969877854856af5c52c5be2697f8"`
[INFO] [stdout] 011f28c7d419543ac8121abcc66224feb23e969877854856af5c52c5be2697f8