[INFO] updating cached repository RustExamples/variables_and_mutability
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/RustExamples/variables_and_mutability
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/RustExamples/variables_and_mutability" "work/ex/beta-1.38-1/sources/1.37.0/gh/RustExamples/variables_and_mutability"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/RustExamples/variables_and_mutability'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RustExamples/variables_and_mutability" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RustExamples/variables_and_mutability"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RustExamples/variables_and_mutability'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c3f53b3fc1212a4c049dbdcf82dfa17d808097b4
[INFO] sha for GitHub repo RustExamples/variables_and_mutability: c3f53b3fc1212a4c049dbdcf82dfa17d808097b4
[INFO] validating manifest of RustExamples/variables_and_mutability 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 RustExamples/variables_and_mutability 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 RustExamples/variables_and_mutability
[INFO] finished frobbing RustExamples/variables_and_mutability
[INFO] frobbed toml for RustExamples/variables_and_mutability written to work/ex/beta-1.38-1/sources/1.37.0/gh/RustExamples/variables_and_mutability/Cargo.toml
[INFO] started frobbing RustExamples/variables_and_mutability
[INFO] finished frobbing RustExamples/variables_and_mutability
[INFO] frobbed toml for RustExamples/variables_and_mutability written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RustExamples/variables_and_mutability/Cargo.toml
[INFO] crate RustExamples/variables_and_mutability 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 RustExamples/variables_and_mutability 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/RustExamples/variables_and_mutability:/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] 9278f1caddd7219d709f36b8ec17f2052dae33ad1eefb02f618721214a23e512
[INFO] running `"docker" "start" "-a" "9278f1caddd7219d709f36b8ec17f2052dae33ad1eefb02f618721214a23e512"`
[INFO] [stderr]    Compiling variables_and_mutability v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "9278f1caddd7219d709f36b8ec17f2052dae33ad1eefb02f618721214a23e512"`
[INFO] running `"docker" "rm" "-f" "9278f1caddd7219d709f36b8ec17f2052dae33ad1eefb02f618721214a23e512"`
[INFO] [stdout] 9278f1caddd7219d709f36b8ec17f2052dae33ad1eefb02f618721214a23e512
[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/RustExamples/variables_and_mutability:/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] 47f7ca7c243144d62512188f8dd6f783f564c88f36c0cc42aa2c68e041351b53
[INFO] running `"docker" "start" "-a" "47f7ca7c243144d62512188f8dd6f783f564c88f36c0cc42aa2c68e041351b53"`
[INFO] [stderr]    Compiling variables_and_mutability v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "47f7ca7c243144d62512188f8dd6f783f564c88f36c0cc42aa2c68e041351b53"`
[INFO] running `"docker" "rm" "-f" "47f7ca7c243144d62512188f8dd6f783f564c88f36c0cc42aa2c68e041351b53"`
[INFO] [stdout] 47f7ca7c243144d62512188f8dd6f783f564c88f36c0cc42aa2c68e041351b53
[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/RustExamples/variables_and_mutability:/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] 111cd8f1aadfe0cb6e2fe2557bf5e7628b2de44650bce9b99f25f35b45d1cdeb
[INFO] running `"docker" "start" "-a" "111cd8f1aadfe0cb6e2fe2557bf5e7628b2de44650bce9b99f25f35b45d1cdeb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/variables_and_mutability-a8202c81422934f0
[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" "111cd8f1aadfe0cb6e2fe2557bf5e7628b2de44650bce9b99f25f35b45d1cdeb"`
[INFO] running `"docker" "rm" "-f" "111cd8f1aadfe0cb6e2fe2557bf5e7628b2de44650bce9b99f25f35b45d1cdeb"`
[INFO] [stdout] 111cd8f1aadfe0cb6e2fe2557bf5e7628b2de44650bce9b99f25f35b45d1cdeb