[INFO] updating cached repository study-rust/ownership-and-slices
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/study-rust/ownership-and-slices
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/study-rust/ownership-and-slices" "work/ex/beta-1.38-1/sources/1.37.0/gh/study-rust/ownership-and-slices"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/study-rust/ownership-and-slices'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/study-rust/ownership-and-slices" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/study-rust/ownership-and-slices"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/study-rust/ownership-and-slices'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8611c00fd43fd65dc53c1338eded9f4086923e81
[INFO] sha for GitHub repo study-rust/ownership-and-slices: 8611c00fd43fd65dc53c1338eded9f4086923e81
[INFO] validating manifest of study-rust/ownership-and-slices 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 study-rust/ownership-and-slices 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 study-rust/ownership-and-slices
[INFO] finished frobbing study-rust/ownership-and-slices
[INFO] frobbed toml for study-rust/ownership-and-slices written to work/ex/beta-1.38-1/sources/1.37.0/gh/study-rust/ownership-and-slices/Cargo.toml
[INFO] started frobbing study-rust/ownership-and-slices
[INFO] finished frobbing study-rust/ownership-and-slices
[INFO] frobbed toml for study-rust/ownership-and-slices written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/study-rust/ownership-and-slices/Cargo.toml
[INFO] crate study-rust/ownership-and-slices already has a lockfile, it will not be regenerated
[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 study-rust/ownership-and-slices against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/study-rust/ownership-and-slices:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a83e2bff64edeba7e05b87120cf40fbcd4a83c82ee2de653e18b5be850eddb2a
[INFO] running `"docker" "start" "-a" "a83e2bff64edeba7e05b87120cf40fbcd4a83c82ee2de653e18b5be850eddb2a"`
[INFO] [stderr]    Compiling understanding-ownership v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "a83e2bff64edeba7e05b87120cf40fbcd4a83c82ee2de653e18b5be850eddb2a"`
[INFO] running `"docker" "rm" "-f" "a83e2bff64edeba7e05b87120cf40fbcd4a83c82ee2de653e18b5be850eddb2a"`
[INFO] [stdout] a83e2bff64edeba7e05b87120cf40fbcd4a83c82ee2de653e18b5be850eddb2a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/study-rust/ownership-and-slices:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] eaf88d4c07a23613ccf0d69e4dae2e6e1f0523c86f9c50588f3478c81d334c9f
[INFO] running `"docker" "start" "-a" "eaf88d4c07a23613ccf0d69e4dae2e6e1f0523c86f9c50588f3478c81d334c9f"`
[INFO] [stderr]    Compiling understanding-ownership v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "eaf88d4c07a23613ccf0d69e4dae2e6e1f0523c86f9c50588f3478c81d334c9f"`
[INFO] running `"docker" "rm" "-f" "eaf88d4c07a23613ccf0d69e4dae2e6e1f0523c86f9c50588f3478c81d334c9f"`
[INFO] [stdout] eaf88d4c07a23613ccf0d69e4dae2e6e1f0523c86f9c50588f3478c81d334c9f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/study-rust/ownership-and-slices:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 3db7da67a2db88a4a6e831fad4b396e04f17fa429ec95ede0ac3bad3a83536bf
[INFO] running `"docker" "start" "-a" "3db7da67a2db88a4a6e831fad4b396e04f17fa429ec95ede0ac3bad3a83536bf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/understanding_ownership-80178965705b6206
[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" "3db7da67a2db88a4a6e831fad4b396e04f17fa429ec95ede0ac3bad3a83536bf"`
[INFO] running `"docker" "rm" "-f" "3db7da67a2db88a4a6e831fad4b396e04f17fa429ec95ede0ac3bad3a83536bf"`
[INFO] [stdout] 3db7da67a2db88a4a6e831fad4b396e04f17fa429ec95ede0ac3bad3a83536bf