[INFO] updating cached repository the-wendell/margin_calculator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/the-wendell/margin_calculator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/the-wendell/margin_calculator" "work/ex/beta-1.38-1/sources/1.37.0/gh/the-wendell/margin_calculator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/the-wendell/margin_calculator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/the-wendell/margin_calculator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/the-wendell/margin_calculator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/the-wendell/margin_calculator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5d698d65292c77340375c66975732c6c2faa784d
[INFO] sha for GitHub repo the-wendell/margin_calculator: 5d698d65292c77340375c66975732c6c2faa784d
[INFO] validating manifest of the-wendell/margin_calculator 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 the-wendell/margin_calculator 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 the-wendell/margin_calculator
[INFO] finished frobbing the-wendell/margin_calculator
[INFO] frobbed toml for the-wendell/margin_calculator written to work/ex/beta-1.38-1/sources/1.37.0/gh/the-wendell/margin_calculator/Cargo.toml
[INFO] started frobbing the-wendell/margin_calculator
[INFO] finished frobbing the-wendell/margin_calculator
[INFO] frobbed toml for the-wendell/margin_calculator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/the-wendell/margin_calculator/Cargo.toml
[INFO] crate the-wendell/margin_calculator 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing the-wendell/margin_calculator 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/the-wendell/margin_calculator:/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] 428a299aeb11660ce36cdbe6f04d5135842d3c30fae48449400e05125f283d33
[INFO] running `"docker" "start" "-a" "428a299aeb11660ce36cdbe6f04d5135842d3c30fae48449400e05125f283d33"`
[INFO] [stderr]    Compiling libcruby-sys v0.7.5
[INFO] [stderr]    Compiling cstr-macro v0.1.0
[INFO] [stderr]    Compiling helix v0.7.5
[INFO] [stderr]    Compiling margin_calculator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.38s
[INFO] running `"docker" "inspect" "428a299aeb11660ce36cdbe6f04d5135842d3c30fae48449400e05125f283d33"`
[INFO] running `"docker" "rm" "-f" "428a299aeb11660ce36cdbe6f04d5135842d3c30fae48449400e05125f283d33"`
[INFO] [stdout] 428a299aeb11660ce36cdbe6f04d5135842d3c30fae48449400e05125f283d33
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/the-wendell/margin_calculator:/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] 4a926d5a8597be5334e0ff378db651ed0928037506c8fabaae6d826fe8defe90
[INFO] running `"docker" "start" "-a" "4a926d5a8597be5334e0ff378db651ed0928037506c8fabaae6d826fe8defe90"`
[INFO] [stderr]    Compiling margin_calculator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "4a926d5a8597be5334e0ff378db651ed0928037506c8fabaae6d826fe8defe90"`
[INFO] running `"docker" "rm" "-f" "4a926d5a8597be5334e0ff378db651ed0928037506c8fabaae6d826fe8defe90"`
[INFO] [stdout] 4a926d5a8597be5334e0ff378db651ed0928037506c8fabaae6d826fe8defe90
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/the-wendell/margin_calculator:/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] 19699141a0c689a14b6ca8edc2017807bb1a53a7be242e7d2ab5497230f05c8f
[INFO] running `"docker" "start" "-a" "19699141a0c689a14b6ca8edc2017807bb1a53a7be242e7d2ab5497230f05c8f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/margin_calculator-4be4c80747dcfa18
[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" "19699141a0c689a14b6ca8edc2017807bb1a53a7be242e7d2ab5497230f05c8f"`
[INFO] running `"docker" "rm" "-f" "19699141a0c689a14b6ca8edc2017807bb1a53a7be242e7d2ab5497230f05c8f"`
[INFO] [stdout] 19699141a0c689a14b6ca8edc2017807bb1a53a7be242e7d2ab5497230f05c8f