[INFO] updating cached repository mcueto/rust-book-chapter-3
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mcueto/rust-book-chapter-3
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mcueto/rust-book-chapter-3" "work/ex/beta-1.38-1/sources/1.37.0/gh/mcueto/rust-book-chapter-3"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mcueto/rust-book-chapter-3'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mcueto/rust-book-chapter-3" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mcueto/rust-book-chapter-3"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mcueto/rust-book-chapter-3'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 97f27c9df9a8d062c32dd13586a62a179e1b4822
[INFO] sha for GitHub repo mcueto/rust-book-chapter-3: 97f27c9df9a8d062c32dd13586a62a179e1b4822
[INFO] validating manifest of mcueto/rust-book-chapter-3 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 mcueto/rust-book-chapter-3 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 mcueto/rust-book-chapter-3
[INFO] finished frobbing mcueto/rust-book-chapter-3
[INFO] frobbed toml for mcueto/rust-book-chapter-3 written to work/ex/beta-1.38-1/sources/1.37.0/gh/mcueto/rust-book-chapter-3/Cargo.toml
[INFO] started frobbing mcueto/rust-book-chapter-3
[INFO] finished frobbing mcueto/rust-book-chapter-3
[INFO] frobbed toml for mcueto/rust-book-chapter-3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mcueto/rust-book-chapter-3/Cargo.toml
[INFO] crate mcueto/rust-book-chapter-3 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 mcueto/rust-book-chapter-3 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mcueto/rust-book-chapter-3:/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] 367f2f41645530426701285e204961b6ae1de9b7dc518aaf012a3660a9c66a98
[INFO] running `"docker" "start" "-a" "367f2f41645530426701285e204961b6ae1de9b7dc518aaf012a3660a9c66a98"`
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "367f2f41645530426701285e204961b6ae1de9b7dc518aaf012a3660a9c66a98"`
[INFO] running `"docker" "rm" "-f" "367f2f41645530426701285e204961b6ae1de9b7dc518aaf012a3660a9c66a98"`
[INFO] [stdout] 367f2f41645530426701285e204961b6ae1de9b7dc518aaf012a3660a9c66a98
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mcueto/rust-book-chapter-3:/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] c5dab05a3fa589d952007600603e607ba48faf0f8b9a59aa9f02ef704a953b6b
[INFO] running `"docker" "start" "-a" "c5dab05a3fa589d952007600603e607ba48faf0f8b9a59aa9f02ef704a953b6b"`
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "c5dab05a3fa589d952007600603e607ba48faf0f8b9a59aa9f02ef704a953b6b"`
[INFO] running `"docker" "rm" "-f" "c5dab05a3fa589d952007600603e607ba48faf0f8b9a59aa9f02ef704a953b6b"`
[INFO] [stdout] c5dab05a3fa589d952007600603e607ba48faf0f8b9a59aa9f02ef704a953b6b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mcueto/rust-book-chapter-3:/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] cda1aad157d5cdd57e4ff7858cd0c5b974f58c0970966acb9a2e30a2b8c8717a
[INFO] running `"docker" "start" "-a" "cda1aad157d5cdd57e4ff7858cd0c5b974f58c0970966acb9a2e30a2b8c8717a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/variables-5f3a16f44e6fbea3
[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" "cda1aad157d5cdd57e4ff7858cd0c5b974f58c0970966acb9a2e30a2b8c8717a"`
[INFO] running `"docker" "rm" "-f" "cda1aad157d5cdd57e4ff7858cd0c5b974f58c0970966acb9a2e30a2b8c8717a"`
[INFO] [stdout] cda1aad157d5cdd57e4ff7858cd0c5b974f58c0970966acb9a2e30a2b8c8717a