[INFO] crate elias-fano 1.1.0 is already in cache
[INFO] extracting crate elias-fano 1.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/elias-fano/1.1.0
[INFO] extracting crate elias-fano 1.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/elias-fano/1.1.0
[INFO] validating manifest of elias-fano-1.1.0 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 elias-fano-1.1.0 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 elias-fano-1.1.0
[INFO] finished frobbing elias-fano-1.1.0
[INFO] frobbed toml for elias-fano-1.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/elias-fano/1.1.0/Cargo.toml
[INFO] started frobbing elias-fano-1.1.0
[INFO] finished frobbing elias-fano-1.1.0
[INFO] frobbed toml for elias-fano-1.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/elias-fano/1.1.0/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 elias-fano-1.1.0 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-5/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/elias-fano/1.1.0:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] ec6d158f6c87fcc52efe2add50223d5a73641e70c7c49db78891423774c09184
[INFO] running `"docker" "start" "-a" "ec6d158f6c87fcc52efe2add50223d5a73641e70c7c49db78891423774c09184"`
[INFO] [stderr]    Compiling elias-fano v1.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "ec6d158f6c87fcc52efe2add50223d5a73641e70c7c49db78891423774c09184"`
[INFO] running `"docker" "rm" "-f" "ec6d158f6c87fcc52efe2add50223d5a73641e70c7c49db78891423774c09184"`
[INFO] [stdout] ec6d158f6c87fcc52efe2add50223d5a73641e70c7c49db78891423774c09184
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/elias-fano/1.1.0:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7877458a87b50597ce5e1559763bbfb61d58211e5aee6233601146084fda1f9a
[INFO] running `"docker" "start" "-a" "7877458a87b50597ce5e1559763bbfb61d58211e5aee6233601146084fda1f9a"`
[INFO] [stderr]    Compiling elias-fano v1.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     ef.skip(500);
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/lib.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     ef.skip(350);
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "7877458a87b50597ce5e1559763bbfb61d58211e5aee6233601146084fda1f9a"`
[INFO] running `"docker" "rm" "-f" "7877458a87b50597ce5e1559763bbfb61d58211e5aee6233601146084fda1f9a"`
[INFO] [stdout] 7877458a87b50597ce5e1559763bbfb61d58211e5aee6233601146084fda1f9a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/elias-fano/1.1.0:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] e8bb5102c736a2a712232ff834e8a5b43da6e24f8f0ea4bd0dbe3582ad25200d
[INFO] running `"docker" "start" "-a" "e8bb5102c736a2a712232ff834e8a5b43da6e24f8f0ea4bd0dbe3582ad25200d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/elias_fano-e1d83cc8732a5c31
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lib-a13cf9472de84dcc
[INFO] [stdout] running 1 test
[INFO] [stdout] test utils::tests::test_msb ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test_position ... ok
[INFO] [stdout] test test_generic ... ok
[INFO] [stdout] test test_reset ... ok
[INFO] [stdout] test test_skip ... ok
[INFO] [stdout] test test_membership ... ok
[INFO] [stdout] test test_move ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests elias-fano
[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" "e8bb5102c736a2a712232ff834e8a5b43da6e24f8f0ea4bd0dbe3582ad25200d"`
[INFO] running `"docker" "rm" "-f" "e8bb5102c736a2a712232ff834e8a5b43da6e24f8f0ea4bd0dbe3582ad25200d"`
[INFO] [stdout] e8bb5102c736a2a712232ff834e8a5b43da6e24f8f0ea4bd0dbe3582ad25200d