[INFO] updating cached repository fabracht/tail_fibonacci_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fabracht/tail_fibonacci_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fabracht/tail_fibonacci_rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/fabracht/tail_fibonacci_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/fabracht/tail_fibonacci_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fabracht/tail_fibonacci_rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/fabracht/tail_fibonacci_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/fabracht/tail_fibonacci_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2f954b305c4f0b627c9b8de28c3f237d7b6a4a8b
[INFO] sha for GitHub repo fabracht/tail_fibonacci_rust: 2f954b305c4f0b627c9b8de28c3f237d7b6a4a8b
[INFO] validating manifest of fabracht/tail_fibonacci_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 fabracht/tail_fibonacci_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 fabracht/tail_fibonacci_rust
[INFO] finished frobbing fabracht/tail_fibonacci_rust
[INFO] frobbed toml for fabracht/tail_fibonacci_rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/fabracht/tail_fibonacci_rust/Cargo.toml
[INFO] started frobbing fabracht/tail_fibonacci_rust
[INFO] finished frobbing fabracht/tail_fibonacci_rust
[INFO] frobbed toml for fabracht/tail_fibonacci_rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/fabracht/tail_fibonacci_rust/Cargo.toml
[INFO] crate fabracht/tail_fibonacci_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 fabracht/tail_fibonacci_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-3/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/fabracht/tail_fibonacci_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] c743e2eb83915b47cc180442cbc0ab6b26dc4f4a05f4f10d2cd9de65ce40ccd0
[INFO] running `"docker" "start" "-a" "c743e2eb83915b47cc180442cbc0ab6b26dc4f4a05f4f10d2cd9de65ce40ccd0"`
[INFO] [stderr]    Compiling tail_fibonacci v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "c743e2eb83915b47cc180442cbc0ab6b26dc4f4a05f4f10d2cd9de65ce40ccd0"`
[INFO] running `"docker" "rm" "-f" "c743e2eb83915b47cc180442cbc0ab6b26dc4f4a05f4f10d2cd9de65ce40ccd0"`
[INFO] [stdout] c743e2eb83915b47cc180442cbc0ab6b26dc4f4a05f4f10d2cd9de65ce40ccd0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/fabracht/tail_fibonacci_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] 3f8197339f0fe068fcacc884b21dbb95451520f2835f39089ca572e5e7704654
[INFO] running `"docker" "start" "-a" "3f8197339f0fe068fcacc884b21dbb95451520f2835f39089ca572e5e7704654"`
[INFO] [stderr]    Compiling tail_fibonacci v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "3f8197339f0fe068fcacc884b21dbb95451520f2835f39089ca572e5e7704654"`
[INFO] running `"docker" "rm" "-f" "3f8197339f0fe068fcacc884b21dbb95451520f2835f39089ca572e5e7704654"`
[INFO] [stdout] 3f8197339f0fe068fcacc884b21dbb95451520f2835f39089ca572e5e7704654
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/fabracht/tail_fibonacci_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] 15afca344f8bb1eb8126834decbdce64404abd5487436190365818b00b57afc7
[INFO] running `"docker" "start" "-a" "15afca344f8bb1eb8126834decbdce64404abd5487436190365818b00b57afc7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tail_fibonacci-f1f649e57fc17230
[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" "15afca344f8bb1eb8126834decbdce64404abd5487436190365818b00b57afc7"`
[INFO] running `"docker" "rm" "-f" "15afca344f8bb1eb8126834decbdce64404abd5487436190365818b00b57afc7"`
[INFO] [stdout] 15afca344f8bb1eb8126834decbdce64404abd5487436190365818b00b57afc7