[INFO] crate traverse 0.0.12 is already in cache
[INFO] extracting crate traverse 0.0.12 into work/ex/beta-1.37-6/sources/1.36.0/reg/traverse/0.0.12
[INFO] extracting crate traverse 0.0.12 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/traverse/0.0.12
[INFO] validating manifest of traverse-0.0.12 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 traverse-0.0.12 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 traverse-0.0.12
[INFO] finished frobbing traverse-0.0.12
[INFO] frobbed toml for traverse-0.0.12 written to work/ex/beta-1.37-6/sources/1.36.0/reg/traverse/0.0.12/Cargo.toml
[INFO] started frobbing traverse-0.0.12
[INFO] finished frobbing traverse-0.0.12
[INFO] frobbed toml for traverse-0.0.12 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/traverse/0.0.12/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing traverse-0.0.12 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/traverse/0.0.12:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 6e4be984a6b3a192163739dce5be65c4fcfb5f086d4276eb3d55d34133185836
[INFO] running `"docker" "start" "-a" "6e4be984a6b3a192163739dce5be65c4fcfb5f086d4276eb3d55d34133185836"`
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling traverse v0.0.12 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "6e4be984a6b3a192163739dce5be65c4fcfb5f086d4276eb3d55d34133185836"`
[INFO] running `"docker" "rm" "-f" "6e4be984a6b3a192163739dce5be65c4fcfb5f086d4276eb3d55d34133185836"`
[INFO] [stdout] 6e4be984a6b3a192163739dce5be65c4fcfb5f086d4276eb3d55d34133185836
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/traverse/0.0.12:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9039f615eccda6f62b2e3ff07ea47b418bb53b1368e0857440802cdbc43cf05b
[INFO] running `"docker" "start" "-a" "9039f615eccda6f62b2e3ff07ea47b418bb53b1368e0857440802cdbc43cf05b"`
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling quickcheck v0.8.5
[INFO] [stderr]    Compiling traverse v0.0.12 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.10s
[INFO] running `"docker" "inspect" "9039f615eccda6f62b2e3ff07ea47b418bb53b1368e0857440802cdbc43cf05b"`
[INFO] running `"docker" "rm" "-f" "9039f615eccda6f62b2e3ff07ea47b418bb53b1368e0857440802cdbc43cf05b"`
[INFO] [stdout] 9039f615eccda6f62b2e3ff07ea47b418bb53b1368e0857440802cdbc43cf05b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/traverse/0.0.12:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 126494905ec11fa35afd3a14b04033f26ac82bd4a683d18af15cd8c07d6172b2
[INFO] running `"docker" "start" "-a" "126494905ec11fa35afd3a14b04033f26ac82bd4a683d18af15cd8c07d6172b2"`
[INFO] [stderr] warning: dependency (num) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/traverse-70976892df0b607d
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test ext::test::chain ... ok
[INFO] [stdout] test ext::test::enumerate ... ok
[INFO] [stdout] test ext::test::filter ... ok
[INFO] [stdout] test ext::test::inspect ... ok
[INFO] [stdout] test ext::test::map ... ok
[INFO] [stdout] test ext::test::skip_while ... ok
[INFO] [stdout] test ext::test::take_while ... ok
[INFO] [stdout] test impls::slice::test::test_basic ... ok
[INFO] [stdout] test impls::vec::test::test_basic ... ok
[INFO] [stdout] test impls::vec::test::test_zero_size ... ok
[INFO] [stdout] test impls::slice::test::test_zero_size ... ok
[INFO] [stdout] test utils::test::test_range ... ok
[INFO] [stdout] test utils::test::test_range_step ... ok
[INFO] [stdout] test utils::test::test_range_inclusive ... ok
[INFO] [stdout] test utils::test::test_range_step_inclusive ... ok
[INFO] [stdout] test ext::test::take ... ok
[INFO] [stdout] test utils::test::test_iterate ... ok
[INFO] [stdout] test utils::test::test_repeat ... ok
[INFO] [stdout] test ext::test::skip ... ok
[INFO] [stdout] test ext::test::cloned ... ok
[INFO] [stdout] test ext::test::filter_map ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test-925ab19f1bbccced
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test quickcheck_filter ... ok
[INFO] [stdout] test quickcheck_map ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests traverse
[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" "126494905ec11fa35afd3a14b04033f26ac82bd4a683d18af15cd8c07d6172b2"`
[INFO] running `"docker" "rm" "-f" "126494905ec11fa35afd3a14b04033f26ac82bd4a683d18af15cd8c07d6172b2"`
[INFO] [stdout] 126494905ec11fa35afd3a14b04033f26ac82bd4a683d18af15cd8c07d6172b2