[INFO] updating cached repository swarnimarun/learning-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/swarnimarun/learning-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/swarnimarun/learning-rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/swarnimarun/learning-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/swarnimarun/learning-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/swarnimarun/learning-rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/swarnimarun/learning-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/swarnimarun/learning-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 758c3e0d6c3d335564a044ce51392749518a2b73
[INFO] sha for GitHub repo swarnimarun/learning-rust: 758c3e0d6c3d335564a044ce51392749518a2b73
[INFO] validating manifest of swarnimarun/learning-rust 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 swarnimarun/learning-rust 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 swarnimarun/learning-rust
[INFO] finished frobbing swarnimarun/learning-rust
[INFO] frobbed toml for swarnimarun/learning-rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/swarnimarun/learning-rust/Cargo.toml
[INFO] started frobbing swarnimarun/learning-rust
[INFO] finished frobbing swarnimarun/learning-rust
[INFO] frobbed toml for swarnimarun/learning-rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/swarnimarun/learning-rust/Cargo.toml
[INFO] crate swarnimarun/learning-rust 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 swarnimarun/learning-rust 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/gh/swarnimarun/learning-rust:/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] 9752a741bd43b9ebd3825841a0123a4269d7e7cc86f9a70bc934a26d53acb8f9
[INFO] running `"docker" "start" "-a" "9752a741bd43b9ebd3825841a0123a4269d7e7cc86f9a70bc934a26d53acb8f9"`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "9752a741bd43b9ebd3825841a0123a4269d7e7cc86f9a70bc934a26d53acb8f9"`
[INFO] running `"docker" "rm" "-f" "9752a741bd43b9ebd3825841a0123a4269d7e7cc86f9a70bc934a26d53acb8f9"`
[INFO] [stdout] 9752a741bd43b9ebd3825841a0123a4269d7e7cc86f9a70bc934a26d53acb8f9
[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/gh/swarnimarun/learning-rust:/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] c762869d3689ee451feea893305e5c778801bc64c34d908a36d5ed1ece3f04e4
[INFO] running `"docker" "start" "-a" "c762869d3689ee451feea893305e5c778801bc64c34d908a36d5ed1ece3f04e4"`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "c762869d3689ee451feea893305e5c778801bc64c34d908a36d5ed1ece3f04e4"`
[INFO] running `"docker" "rm" "-f" "c762869d3689ee451feea893305e5c778801bc64c34d908a36d5ed1ece3f04e4"`
[INFO] [stdout] c762869d3689ee451feea893305e5c778801bc64c34d908a36d5ed1ece3f04e4
[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/gh/swarnimarun/learning-rust:/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] 8dceef650ea3827ad4e9df84a3d5ca3835923180c30f32144bf50702fb7221b5
[INFO] running `"docker" "start" "-a" "8dceef650ea3827ad4e9df84a3d5ca3835923180c30f32144bf50702fb7221b5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learning_rust-b9fc9d57c1445768
[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" "8dceef650ea3827ad4e9df84a3d5ca3835923180c30f32144bf50702fb7221b5"`
[INFO] running `"docker" "rm" "-f" "8dceef650ea3827ad4e9df84a3d5ca3835923180c30f32144bf50702fb7221b5"`
[INFO] [stdout] 8dceef650ea3827ad4e9df84a3d5ca3835923180c30f32144bf50702fb7221b5