[INFO] updating cached repository ZhouHansen/async_rust_playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ZhouHansen/async_rust_playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ZhouHansen/async_rust_playground" "work/ex/beta-1.37-6/sources/1.36.0/gh/ZhouHansen/async_rust_playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ZhouHansen/async_rust_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ZhouHansen/async_rust_playground" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ZhouHansen/async_rust_playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ZhouHansen/async_rust_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 35a57a71145390d68ca6d19ee16905543662d726
[INFO] sha for GitHub repo ZhouHansen/async_rust_playground: 35a57a71145390d68ca6d19ee16905543662d726
[INFO] validating manifest of ZhouHansen/async_rust_playground 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 ZhouHansen/async_rust_playground 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 ZhouHansen/async_rust_playground
[INFO] finished frobbing ZhouHansen/async_rust_playground
[INFO] frobbed toml for ZhouHansen/async_rust_playground written to work/ex/beta-1.37-6/sources/1.36.0/gh/ZhouHansen/async_rust_playground/Cargo.toml
[INFO] started frobbing ZhouHansen/async_rust_playground
[INFO] finished frobbing ZhouHansen/async_rust_playground
[INFO] frobbed toml for ZhouHansen/async_rust_playground written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ZhouHansen/async_rust_playground/Cargo.toml
[INFO] crate ZhouHansen/async_rust_playground 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 ZhouHansen/async_rust_playground 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-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ZhouHansen/async_rust_playground:/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] 9cb5a157f8aed05759a119eaf06c88b94e9077a6e9cbe4a10a233936ddf2bf47
[INFO] running `"docker" "start" "-a" "9cb5a157f8aed05759a119eaf06c88b94e9077a6e9cbe4a10a233936ddf2bf47"`
[INFO] [stderr]    Compiling async_rust_playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `"docker" "inspect" "9cb5a157f8aed05759a119eaf06c88b94e9077a6e9cbe4a10a233936ddf2bf47"`
[INFO] running `"docker" "rm" "-f" "9cb5a157f8aed05759a119eaf06c88b94e9077a6e9cbe4a10a233936ddf2bf47"`
[INFO] [stdout] 9cb5a157f8aed05759a119eaf06c88b94e9077a6e9cbe4a10a233936ddf2bf47
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ZhouHansen/async_rust_playground:/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] aa8ec40da949b46b3baaf289e8c4f85b7f9e28bbd4783601ab517bce8eada88c
[INFO] running `"docker" "start" "-a" "aa8ec40da949b46b3baaf289e8c4f85b7f9e28bbd4783601ab517bce8eada88c"`
[INFO] [stderr]    Compiling async_rust_playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "aa8ec40da949b46b3baaf289e8c4f85b7f9e28bbd4783601ab517bce8eada88c"`
[INFO] running `"docker" "rm" "-f" "aa8ec40da949b46b3baaf289e8c4f85b7f9e28bbd4783601ab517bce8eada88c"`
[INFO] [stdout] aa8ec40da949b46b3baaf289e8c4f85b7f9e28bbd4783601ab517bce8eada88c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ZhouHansen/async_rust_playground:/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] 4bbdf2a25fbc7e1f0c72d5b614600151dcd2c86038f6c3ad19798d28442b9340
[INFO] running `"docker" "start" "-a" "4bbdf2a25fbc7e1f0c72d5b614600151dcd2c86038f6c3ad19798d28442b9340"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/async_rust_playground-10a062af9d12c41f
[INFO] [stderr]      Running /opt/crater/target/debug/deps/async_rust_playground-ee83b1c5bbc8022e
[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] [stdout] 
[INFO] [stderr]    Doc-tests async_rust_playground
[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] [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" "4bbdf2a25fbc7e1f0c72d5b614600151dcd2c86038f6c3ad19798d28442b9340"`
[INFO] running `"docker" "rm" "-f" "4bbdf2a25fbc7e1f0c72d5b614600151dcd2c86038f6c3ad19798d28442b9340"`
[INFO] [stdout] 4bbdf2a25fbc7e1f0c72d5b614600151dcd2c86038f6c3ad19798d28442b9340