[INFO] updating cached repository yarrow/slightly-smaller-setop-for-question
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yarrow/slightly-smaller-setop-for-question
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yarrow/slightly-smaller-setop-for-question" "work/ex/beta-1.37-6/sources/1.36.0/gh/yarrow/slightly-smaller-setop-for-question"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/yarrow/slightly-smaller-setop-for-question'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yarrow/slightly-smaller-setop-for-question" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yarrow/slightly-smaller-setop-for-question"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yarrow/slightly-smaller-setop-for-question'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c4230686b714bd32da42d35f6af8d140c7ab8bcf
[INFO] sha for GitHub repo yarrow/slightly-smaller-setop-for-question: c4230686b714bd32da42d35f6af8d140c7ab8bcf
[INFO] validating manifest of yarrow/slightly-smaller-setop-for-question 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 yarrow/slightly-smaller-setop-for-question 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 yarrow/slightly-smaller-setop-for-question
[INFO] finished frobbing yarrow/slightly-smaller-setop-for-question
[INFO] frobbed toml for yarrow/slightly-smaller-setop-for-question written to work/ex/beta-1.37-6/sources/1.36.0/gh/yarrow/slightly-smaller-setop-for-question/Cargo.toml
[INFO] started frobbing yarrow/slightly-smaller-setop-for-question
[INFO] finished frobbing yarrow/slightly-smaller-setop-for-question
[INFO] frobbed toml for yarrow/slightly-smaller-setop-for-question written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yarrow/slightly-smaller-setop-for-question/Cargo.toml
[INFO] crate yarrow/slightly-smaller-setop-for-question 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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yarrow/slightly-smaller-setop-for-question 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/yarrow/slightly-smaller-setop-for-question:/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] 4e14c60f165841feb5d2bc7804caa3d342e82e883631c6a27f9a043a9d01d5b5
[INFO] running `"docker" "start" "-a" "4e14c60f165841feb5d2bc7804caa3d342e82e883631c6a27f9a043a9d01d5b5"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.11
[INFO] [stderr]    Compiling rental-impl v0.5.2
[INFO] [stderr]    Compiling rental v0.5.2
[INFO] [stderr]    Compiling minimal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.24s
[INFO] running `"docker" "inspect" "4e14c60f165841feb5d2bc7804caa3d342e82e883631c6a27f9a043a9d01d5b5"`
[INFO] running `"docker" "rm" "-f" "4e14c60f165841feb5d2bc7804caa3d342e82e883631c6a27f9a043a9d01d5b5"`
[INFO] [stdout] 4e14c60f165841feb5d2bc7804caa3d342e82e883631c6a27f9a043a9d01d5b5
[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/yarrow/slightly-smaller-setop-for-question:/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] ce096696dc8a90b0be05aa0ec1e76dcf52f8ab9dc3cbcb4f007086b0148c7775
[INFO] running `"docker" "start" "-a" "ce096696dc8a90b0be05aa0ec1e76dcf52f8ab9dc3cbcb4f007086b0148c7775"`
[INFO] [stderr]    Compiling minimal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "ce096696dc8a90b0be05aa0ec1e76dcf52f8ab9dc3cbcb4f007086b0148c7775"`
[INFO] running `"docker" "rm" "-f" "ce096696dc8a90b0be05aa0ec1e76dcf52f8ab9dc3cbcb4f007086b0148c7775"`
[INFO] [stdout] ce096696dc8a90b0be05aa0ec1e76dcf52f8ab9dc3cbcb4f007086b0148c7775
[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/yarrow/slightly-smaller-setop-for-question:/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] d7bf72f8ddd1ca58bd7bca977765d3961c294542f454d36475d7663eb504e14d
[INFO] running `"docker" "start" "-a" "d7bf72f8ddd1ca58bd7bca977765d3961c294542f454d36475d7663eb504e14d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[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/minimal-f4accb2ff7e5aee2
[INFO] running `"docker" "inspect" "d7bf72f8ddd1ca58bd7bca977765d3961c294542f454d36475d7663eb504e14d"`
[INFO] running `"docker" "rm" "-f" "d7bf72f8ddd1ca58bd7bca977765d3961c294542f454d36475d7663eb504e14d"`
[INFO] [stdout] d7bf72f8ddd1ca58bd7bca977765d3961c294542f454d36475d7663eb504e14d