[INFO] updating cached repository aochagavia/optimization-experiment
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/aochagavia/optimization-experiment
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/aochagavia/optimization-experiment" "work/ex/beta-1.38-1/sources/1.37.0/gh/aochagavia/optimization-experiment"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/aochagavia/optimization-experiment'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aochagavia/optimization-experiment" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aochagavia/optimization-experiment"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aochagavia/optimization-experiment'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e9c2193357d7c4b415cea01ed1242bad991d221e
[INFO] sha for GitHub repo aochagavia/optimization-experiment: e9c2193357d7c4b415cea01ed1242bad991d221e
[INFO] validating manifest of aochagavia/optimization-experiment 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 aochagavia/optimization-experiment 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 aochagavia/optimization-experiment
[INFO] finished frobbing aochagavia/optimization-experiment
[INFO] frobbed toml for aochagavia/optimization-experiment written to work/ex/beta-1.38-1/sources/1.37.0/gh/aochagavia/optimization-experiment/Cargo.toml
[INFO] started frobbing aochagavia/optimization-experiment
[INFO] finished frobbing aochagavia/optimization-experiment
[INFO] frobbed toml for aochagavia/optimization-experiment written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aochagavia/optimization-experiment/Cargo.toml
[INFO] crate aochagavia/optimization-experiment 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 aochagavia/optimization-experiment 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/aochagavia/optimization-experiment:/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] 9dda5a2afbc2419250527542d4ae390c340aa4f271944e03d35a9acc96e62ae1
[INFO] running `"docker" "start" "-a" "9dda5a2afbc2419250527542d4ae390c340aa4f271944e03d35a9acc96e62ae1"`
[INFO] [stderr]    Compiling optimize-z3 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "9dda5a2afbc2419250527542d4ae390c340aa4f271944e03d35a9acc96e62ae1"`
[INFO] running `"docker" "rm" "-f" "9dda5a2afbc2419250527542d4ae390c340aa4f271944e03d35a9acc96e62ae1"`
[INFO] [stdout] 9dda5a2afbc2419250527542d4ae390c340aa4f271944e03d35a9acc96e62ae1
[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/aochagavia/optimization-experiment:/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] 9987580b6296765fb6197e43c34b0e3e2638cc0d0117416985be02fadb33266c
[INFO] running `"docker" "start" "-a" "9987580b6296765fb6197e43c34b0e3e2638cc0d0117416985be02fadb33266c"`
[INFO] [stderr]    Compiling optimize-z3 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "9987580b6296765fb6197e43c34b0e3e2638cc0d0117416985be02fadb33266c"`
[INFO] running `"docker" "rm" "-f" "9987580b6296765fb6197e43c34b0e3e2638cc0d0117416985be02fadb33266c"`
[INFO] [stdout] 9987580b6296765fb6197e43c34b0e3e2638cc0d0117416985be02fadb33266c
[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/aochagavia/optimization-experiment:/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] fde9440818f3062c4042ecdf8f9c29a79507dcfd129329f6299d6f17f93827a2
[INFO] running `"docker" "start" "-a" "fde9440818f3062c4042ecdf8f9c29a79507dcfd129329f6299d6f17f93827a2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/optimize_z3-84972dde08d5875c
[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" "fde9440818f3062c4042ecdf8f9c29a79507dcfd129329f6299d6f17f93827a2"`
[INFO] running `"docker" "rm" "-f" "fde9440818f3062c4042ecdf8f9c29a79507dcfd129329f6299d6f17f93827a2"`
[INFO] [stdout] fde9440818f3062c4042ecdf8f9c29a79507dcfd129329f6299d6f17f93827a2