[INFO] updating cached repository ymgyt/flipflop
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ymgyt/flipflop
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ymgyt/flipflop" "work/ex/beta-1.38-1/sources/1.37.0/gh/ymgyt/flipflop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ymgyt/flipflop'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ymgyt/flipflop" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ymgyt/flipflop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ymgyt/flipflop'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1c8428e4b5faaee034408eadc8a6b671f2cc1ff9
[INFO] sha for GitHub repo ymgyt/flipflop: 1c8428e4b5faaee034408eadc8a6b671f2cc1ff9
[INFO] validating manifest of ymgyt/flipflop 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 ymgyt/flipflop 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 ymgyt/flipflop
[INFO] finished frobbing ymgyt/flipflop
[INFO] frobbed toml for ymgyt/flipflop written to work/ex/beta-1.38-1/sources/1.37.0/gh/ymgyt/flipflop/Cargo.toml
[INFO] started frobbing ymgyt/flipflop
[INFO] finished frobbing ymgyt/flipflop
[INFO] frobbed toml for ymgyt/flipflop written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ymgyt/flipflop/Cargo.toml
[INFO] crate ymgyt/flipflop 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 ymgyt/flipflop against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ymgyt/flipflop:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] a81d4655a483ea9c27864f26e8de8de1eed330fa7bfd4e7feaf08b0dabb99faf
[INFO] running `"docker" "start" "-a" "a81d4655a483ea9c27864f26e8de8de1eed330fa7bfd4e7feaf08b0dabb99faf"`
[INFO] [stderr]    Compiling flipflop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `"docker" "inspect" "a81d4655a483ea9c27864f26e8de8de1eed330fa7bfd4e7feaf08b0dabb99faf"`
[INFO] running `"docker" "rm" "-f" "a81d4655a483ea9c27864f26e8de8de1eed330fa7bfd4e7feaf08b0dabb99faf"`
[INFO] [stdout] a81d4655a483ea9c27864f26e8de8de1eed330fa7bfd4e7feaf08b0dabb99faf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ymgyt/flipflop:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 38d21ab8e89dccde534a8be3e6d91e5c78d65dabee4f90deb61ee2e790bc14e2
[INFO] running `"docker" "start" "-a" "38d21ab8e89dccde534a8be3e6d91e5c78d65dabee4f90deb61ee2e790bc14e2"`
[INFO] [stderr]    Compiling flipflop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `"docker" "inspect" "38d21ab8e89dccde534a8be3e6d91e5c78d65dabee4f90deb61ee2e790bc14e2"`
[INFO] running `"docker" "rm" "-f" "38d21ab8e89dccde534a8be3e6d91e5c78d65dabee4f90deb61ee2e790bc14e2"`
[INFO] [stdout] 38d21ab8e89dccde534a8be3e6d91e5c78d65dabee4f90deb61ee2e790bc14e2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ymgyt/flipflop:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 2ab0a181946a1d6df5fa8963975f4daffdf910e00e9c95921073083653b0044e
[INFO] running `"docker" "start" "-a" "2ab0a181946a1d6df5fa8963975f4daffdf910e00e9c95921073083653b0044e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/flipflop-0e66920bea7efe9b
[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] [stderr]      Running /opt/crater/target/debug/deps/main-deb4b9e9f64f22be
[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] [stderr]    Doc-tests flipflop
[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" "2ab0a181946a1d6df5fa8963975f4daffdf910e00e9c95921073083653b0044e"`
[INFO] running `"docker" "rm" "-f" "2ab0a181946a1d6df5fa8963975f4daffdf910e00e9c95921073083653b0044e"`
[INFO] [stdout] 2ab0a181946a1d6df5fa8963975f4daffdf910e00e9c95921073083653b0044e