[INFO] updating cached repository jonny7/rust-ownership
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jonny7/rust-ownership
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jonny7/rust-ownership" "work/ex/beta-1.37-6/sources/1.36.0/gh/jonny7/rust-ownership"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jonny7/rust-ownership'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jonny7/rust-ownership" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jonny7/rust-ownership"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jonny7/rust-ownership'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f54265e8b091db866bad7abc334d76d1d70787f0
[INFO] sha for GitHub repo jonny7/rust-ownership: f54265e8b091db866bad7abc334d76d1d70787f0
[INFO] validating manifest of jonny7/rust-ownership 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 jonny7/rust-ownership 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 jonny7/rust-ownership
[INFO] finished frobbing jonny7/rust-ownership
[INFO] frobbed toml for jonny7/rust-ownership written to work/ex/beta-1.37-6/sources/1.36.0/gh/jonny7/rust-ownership/Cargo.toml
[INFO] started frobbing jonny7/rust-ownership
[INFO] finished frobbing jonny7/rust-ownership
[INFO] frobbed toml for jonny7/rust-ownership written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jonny7/rust-ownership/Cargo.toml
[INFO] crate jonny7/rust-ownership already has a lockfile, it will not be regenerated
[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 jonny7/rust-ownership 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-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jonny7/rust-ownership:/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] 2f6f489a7d56ba63069b94527dd29928f4d9b594d2c24a35b27dd6b17581cdb8
[INFO] running `"docker" "start" "-a" "2f6f489a7d56ba63069b94527dd29928f4d9b594d2c24a35b27dd6b17581cdb8"`
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let s1 = gives_ownership();         // gives_ownership moves its return
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_s1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s3`
[INFO] [stderr]   --> src/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let s3 = takes_and_gives_back(s2);  // s2 is moved into
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_s3`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "2f6f489a7d56ba63069b94527dd29928f4d9b594d2c24a35b27dd6b17581cdb8"`
[INFO] running `"docker" "rm" "-f" "2f6f489a7d56ba63069b94527dd29928f4d9b594d2c24a35b27dd6b17581cdb8"`
[INFO] [stdout] 2f6f489a7d56ba63069b94527dd29928f4d9b594d2c24a35b27dd6b17581cdb8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jonny7/rust-ownership:/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] 3565011fc39e4d7ac2638848e4a34314d2890531e921b56bb81a9ac461e9fb91
[INFO] running `"docker" "start" "-a" "3565011fc39e4d7ac2638848e4a34314d2890531e921b56bb81a9ac461e9fb91"`
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let s1 = gives_ownership();         // gives_ownership moves its return
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_s1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s3`
[INFO] [stderr]   --> src/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let s3 = takes_and_gives_back(s2);  // s2 is moved into
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_s3`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "3565011fc39e4d7ac2638848e4a34314d2890531e921b56bb81a9ac461e9fb91"`
[INFO] running `"docker" "rm" "-f" "3565011fc39e4d7ac2638848e4a34314d2890531e921b56bb81a9ac461e9fb91"`
[INFO] [stdout] 3565011fc39e4d7ac2638848e4a34314d2890531e921b56bb81a9ac461e9fb91
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jonny7/rust-ownership:/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] 7656e79c92d7ca96e043ad0acfda37316253c85483d94659004190d2983c5d4e
[INFO] running `"docker" "start" "-a" "7656e79c92d7ca96e043ad0acfda37316253c85483d94659004190d2983c5d4e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ownership-e31305bce33cf214
[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" "7656e79c92d7ca96e043ad0acfda37316253c85483d94659004190d2983c5d4e"`
[INFO] running `"docker" "rm" "-f" "7656e79c92d7ca96e043ad0acfda37316253c85483d94659004190d2983c5d4e"`
[INFO] [stdout] 7656e79c92d7ca96e043ad0acfda37316253c85483d94659004190d2983c5d4e