[INFO] cloning repository joyent/rust-quickcheck-helpers
[INFO] running `"git" "clone" "--bare" "git://github.com/joyent/rust-quickcheck-helpers.git" "work/cache/sources/gh/joyent/rust-quickcheck-helpers"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/joyent/rust-quickcheck-helpers'...
[INFO] running `"git" "clone" "work/cache/sources/gh/joyent/rust-quickcheck-helpers" "work/ex/beta-1.37-6/sources/1.36.0/gh/joyent/rust-quickcheck-helpers"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/joyent/rust-quickcheck-helpers'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/joyent/rust-quickcheck-helpers" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/joyent/rust-quickcheck-helpers"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/joyent/rust-quickcheck-helpers'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 52a286ced9d285988deab2738a72b73a4ba81dd3
[INFO] sha for GitHub repo joyent/rust-quickcheck-helpers: 52a286ced9d285988deab2738a72b73a4ba81dd3
[INFO] validating manifest of joyent/rust-quickcheck-helpers 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 joyent/rust-quickcheck-helpers 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 joyent/rust-quickcheck-helpers
[INFO] finished frobbing joyent/rust-quickcheck-helpers
[INFO] frobbed toml for joyent/rust-quickcheck-helpers written to work/ex/beta-1.37-6/sources/1.36.0/gh/joyent/rust-quickcheck-helpers/Cargo.toml
[INFO] started frobbing joyent/rust-quickcheck-helpers
[INFO] finished frobbing joyent/rust-quickcheck-helpers
[INFO] frobbed toml for joyent/rust-quickcheck-helpers written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/joyent/rust-quickcheck-helpers/Cargo.toml
[INFO] crate joyent/rust-quickcheck-helpers 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 joyent/rust-quickcheck-helpers against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/joyent/rust-quickcheck-helpers:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] e7cab9e6ef48e34be8470aa19fad66abee82e3ba108a44595826d7d6dad7b684
[INFO] running `"docker" "start" "-a" "e7cab9e6ef48e34be8470aa19fad66abee82e3ba108a44595826d7d6dad7b684"`
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling quickcheck v0.8.5
[INFO] [stderr]    Compiling quickcheck_helpers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.87s
[INFO] running `"docker" "inspect" "e7cab9e6ef48e34be8470aa19fad66abee82e3ba108a44595826d7d6dad7b684"`
[INFO] running `"docker" "rm" "-f" "e7cab9e6ef48e34be8470aa19fad66abee82e3ba108a44595826d7d6dad7b684"`
[INFO] [stdout] e7cab9e6ef48e34be8470aa19fad66abee82e3ba108a44595826d7d6dad7b684
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/joyent/rust-quickcheck-helpers:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7f94ef36480ccfb5b1dd20f91107f84d30a239faa5939819d77f6ca9ff827cbe
[INFO] running `"docker" "start" "-a" "7f94ef36480ccfb5b1dd20f91107f84d30a239faa5939819d77f6ca9ff827cbe"`
[INFO] [stderr]    Compiling quickcheck_helpers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `"docker" "inspect" "7f94ef36480ccfb5b1dd20f91107f84d30a239faa5939819d77f6ca9ff827cbe"`
[INFO] running `"docker" "rm" "-f" "7f94ef36480ccfb5b1dd20f91107f84d30a239faa5939819d77f6ca9ff827cbe"`
[INFO] [stdout] 7f94ef36480ccfb5b1dd20f91107f84d30a239faa5939819d77f6ca9ff827cbe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/joyent/rust-quickcheck-helpers:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 47b1cc57bdcc5003f445ca0fd63f9fe792889f1cbced6b545c1eda569463b47e
[INFO] running `"docker" "start" "-a" "47b1cc57bdcc5003f445ca0fd63f9fe792889f1cbced6b545c1eda569463b47e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/quickcheck_helpers-4e7bbe9afcbef6fd
[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 quickcheck_helpers
[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" "47b1cc57bdcc5003f445ca0fd63f9fe792889f1cbced6b545c1eda569463b47e"`
[INFO] running `"docker" "rm" "-f" "47b1cc57bdcc5003f445ca0fd63f9fe792889f1cbced6b545c1eda569463b47e"`
[INFO] [stdout] 47b1cc57bdcc5003f445ca0fd63f9fe792889f1cbced6b545c1eda569463b47e