[INFO] crate jwalk 0.4.0 is already in cache
[INFO] extracting crate jwalk 0.4.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/jwalk/0.4.0
[INFO] extracting crate jwalk 0.4.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/jwalk/0.4.0
[INFO] validating manifest of jwalk-0.4.0 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 jwalk-0.4.0 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 jwalk-0.4.0
[INFO] finished frobbing jwalk-0.4.0
[INFO] frobbed toml for jwalk-0.4.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/jwalk/0.4.0/Cargo.toml
[INFO] started frobbing jwalk-0.4.0
[INFO] finished frobbing jwalk-0.4.0
[INFO] frobbed toml for jwalk-0.4.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/jwalk/0.4.0/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 jwalk-0.4.0 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/jwalk/0.4.0:/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] 4a51920324ae130b688aa3db8a88783e01242386f5b889a94fd6d57f3e109214
[INFO] running `"docker" "start" "-a" "4a51920324ae130b688aa3db8a88783e01242386f5b889a94fd6d57f3e109214"`
[INFO] [stderr]    Compiling jwalk v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.91s
[INFO] running `"docker" "inspect" "4a51920324ae130b688aa3db8a88783e01242386f5b889a94fd6d57f3e109214"`
[INFO] running `"docker" "rm" "-f" "4a51920324ae130b688aa3db8a88783e01242386f5b889a94fd6d57f3e109214"`
[INFO] [stdout] 4a51920324ae130b688aa3db8a88783e01242386f5b889a94fd6d57f3e109214
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/jwalk/0.4.0:/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] c2d2cdb94b84f2d5ce9f966ddbfb79e179a402fee33f11c0fa1d63378ba57f4c
[INFO] running `"docker" "start" "-a" "c2d2cdb94b84f2d5ce9f966ddbfb79e179a402fee33f11c0fa1d63378ba57f4c"`
[INFO] [stderr]    Compiling globset v0.4.4
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling ignore v0.4.9
[INFO] [stderr]    Compiling jwalk v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> tests/mod.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     iter.next().unwrap().is_ok(); // " (0)",
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> tests/mod.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     iter.next().unwrap().is_ok(); // "a.txt (1)",
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> tests/mod.rs:159:5
[INFO] [stderr]     |
[INFO] [stderr] 159 |     iter.next().unwrap().is_ok(); // "b.txt (1)",
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> tests/mod.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     iter.next().unwrap().is_ok(); // "c.txt (1)",
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> tests/mod.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 |     iter.next().unwrap().is_ok(); // "group 1 (1)",
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> tests/mod.rs:162:5
[INFO] [stderr]     |
[INFO] [stderr] 162 |     iter.next().unwrap().is_ok(); // "group 1/d.txt (2)",
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::option::Option::<T>::is_some` that must be used
[INFO] [stderr]    --> tests/mod.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     group_2.content_error.is_some();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.95s
[INFO] running `"docker" "inspect" "c2d2cdb94b84f2d5ce9f966ddbfb79e179a402fee33f11c0fa1d63378ba57f4c"`
[INFO] running `"docker" "rm" "-f" "c2d2cdb94b84f2d5ce9f966ddbfb79e179a402fee33f11c0fa1d63378ba57f4c"`
[INFO] [stdout] c2d2cdb94b84f2d5ce9f966ddbfb79e179a402fee33f11c0fa1d63378ba57f4c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/jwalk/0.4.0:/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] fdb72cf38437e41ba54d49ee6c531f2ad5836299c06d80f36663de88931f065f
[INFO] running `"docker" "start" "-a" "fdb72cf38437e41ba54d49ee6c531f2ad5836299c06d80f36663de88931f065f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/jwalk-e3c68b52aaf30dec
[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] [stderr]      Running /opt/crater/target/debug/deps/mod-41abdc62555a3fb2
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test sort_by_name_single_thread ... ok
[INFO] [stdout] test sort_by_name_rayon_pool_global ... ok
[INFO] [stdout] test error_when_path_removed_durring_iteration ... ok
[INFO] [stdout] test walk_root ... ok
[INFO] [stdout] test max_depth_1 ... ok
[INFO] [stdout] test error_when_path_does_not_exist ... ok
[INFO] [stdout] test see_hidden_files ... ok
[INFO] [stdout] test sort_by_name_rayon_pool_2_threads ... ok
[INFO] [stdout] test walk ... ok
[INFO] [stdout] test walk_file ... ok
[INFO] [stdout] test max_depth_0 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests jwalk
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 13) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fdb72cf38437e41ba54d49ee6c531f2ad5836299c06d80f36663de88931f065f"`
[INFO] running `"docker" "rm" "-f" "fdb72cf38437e41ba54d49ee6c531f2ad5836299c06d80f36663de88931f065f"`
[INFO] [stdout] fdb72cf38437e41ba54d49ee6c531f2ad5836299c06d80f36663de88931f065f