[INFO] crate natural_numbers 0.1.0 is already in cache
[INFO] extracting crate natural_numbers 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/natural_numbers/0.1.0
[INFO] extracting crate natural_numbers 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/natural_numbers/0.1.0
[INFO] validating manifest of natural_numbers-0.1.0 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 natural_numbers-0.1.0 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 natural_numbers-0.1.0
[INFO] finished frobbing natural_numbers-0.1.0
[INFO] frobbed toml for natural_numbers-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/natural_numbers/0.1.0/Cargo.toml
[INFO] started frobbing natural_numbers-0.1.0
[INFO] finished frobbing natural_numbers-0.1.0
[INFO] frobbed toml for natural_numbers-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/natural_numbers/0.1.0/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 natural_numbers-0.1.0 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-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/natural_numbers/0.1.0:/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] d913dfcb27f605764723936f895a36fe89d3ec1467636f342abb4e8d33334632
[INFO] running `"docker" "start" "-a" "d913dfcb27f605764723936f895a36fe89d3ec1467636f342abb4e8d33334632"`
[INFO] [stderr]    Compiling natural_numbers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "d913dfcb27f605764723936f895a36fe89d3ec1467636f342abb4e8d33334632"`
[INFO] running `"docker" "rm" "-f" "d913dfcb27f605764723936f895a36fe89d3ec1467636f342abb4e8d33334632"`
[INFO] [stdout] d913dfcb27f605764723936f895a36fe89d3ec1467636f342abb4e8d33334632
[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/natural_numbers/0.1.0:/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] 163975294afaa6f775115870791571c7aed9f5d73f806506f8e2ccaf12982099
[INFO] running `"docker" "start" "-a" "163975294afaa6f775115870791571c7aed9f5d73f806506f8e2ccaf12982099"`
[INFO] [stderr]    Compiling natural_numbers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "163975294afaa6f775115870791571c7aed9f5d73f806506f8e2ccaf12982099"`
[INFO] running `"docker" "rm" "-f" "163975294afaa6f775115870791571c7aed9f5d73f806506f8e2ccaf12982099"`
[INFO] [stdout] 163975294afaa6f775115870791571c7aed9f5d73f806506f8e2ccaf12982099
[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/natural_numbers/0.1.0:/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] 2df91f62a5a9acc0efd04a7e18b53ef47ca864afeca7f3489c586ed6805b7bd4
[INFO] running `"docker" "start" "-a" "2df91f62a5a9acc0efd04a7e18b53ef47ca864afeca7f3489c586ed6805b7bd4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/natural_numbers-847dfcb34fa931a0
[INFO] [stderr]      Running /opt/crater/target/debug/deps/natural_numbers-7f080d1efcf46e68
[INFO] [stderr]    Doc-tests natural_numbers
[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] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - Nat::pred (line 44) ... ok
[INFO] [stdout] test src/lib.rs - Nat::value (line 12) ... ok
[INFO] [stdout] test src/lib.rs - Nat::add (line 59) ... ok
[INFO] [stdout] test src/lib.rs - Nat::succ (line 35) ... ok
[INFO] [stdout] test src/lib.rs - Nat::wrap (line 22) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2df91f62a5a9acc0efd04a7e18b53ef47ca864afeca7f3489c586ed6805b7bd4"`
[INFO] running `"docker" "rm" "-f" "2df91f62a5a9acc0efd04a7e18b53ef47ca864afeca7f3489c586ed6805b7bd4"`
[INFO] [stdout] 2df91f62a5a9acc0efd04a7e18b53ef47ca864afeca7f3489c586ed6805b7bd4