[INFO] crate tower-buffer 0.1.1 is already in cache
[INFO] extracting crate tower-buffer 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/tower-buffer/0.1.1
[INFO] extracting crate tower-buffer 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tower-buffer/0.1.1
[INFO] validating manifest of tower-buffer-0.1.1 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 tower-buffer-0.1.1 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 tower-buffer-0.1.1
[INFO] finished frobbing tower-buffer-0.1.1
[INFO] frobbed toml for tower-buffer-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tower-buffer/0.1.1/Cargo.toml
[INFO] started frobbing tower-buffer-0.1.1
[INFO] finished frobbing tower-buffer-0.1.1
[INFO] frobbed toml for tower-buffer-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tower-buffer/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 tower-buffer-0.1.1 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tower-buffer/0.1.1:/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] 7abfa236297011c14d4b39559620d941af3cd42963e5775ae6c371b5b5058fc4
[INFO] running `"docker" "start" "-a" "7abfa236297011c14d4b39559620d941af3cd42963e5775ae6c371b5b5058fc4"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling tower-layer v0.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling tracing-core v0.1.5
[INFO] [stderr]    Compiling tokio-executor v0.1.8
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.2
[INFO] [stderr]    Compiling tracing v0.1.6
[INFO] [stderr]    Compiling tower-buffer v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.16s
[INFO] running `"docker" "inspect" "7abfa236297011c14d4b39559620d941af3cd42963e5775ae6c371b5b5058fc4"`
[INFO] running `"docker" "rm" "-f" "7abfa236297011c14d4b39559620d941af3cd42963e5775ae6c371b5b5058fc4"`
[INFO] [stdout] 7abfa236297011c14d4b39559620d941af3cd42963e5775ae6c371b5b5058fc4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tower-buffer/0.1.1:/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] c55cfc473be3a8b6373b233a57f40f3356d583b6962029b36bf842823ab9c504
[INFO] running `"docker" "start" "-a" "c55cfc473be3a8b6373b233a57f40f3356d583b6962029b36bf842823ab9c504"`
[INFO] [stderr]    Compiling tower-discover v0.1.0
[INFO] [stderr]    Compiling tower-test v0.1.0
[INFO] [stderr]    Compiling tower-load-shed v0.1.0
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling tower-util v0.1.0
[INFO] [stderr]    Compiling tower-buffer v0.1.1
[INFO] [stderr]    Compiling tower-retry v0.1.0
[INFO] [stderr]    Compiling tower-timeout v0.1.1
[INFO] [stderr]    Compiling tower-limit v0.1.0
[INFO] [stderr]    Compiling tower v0.1.1
[INFO] [stderr]    Compiling tower-buffer v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.66s
[INFO] running `"docker" "inspect" "c55cfc473be3a8b6373b233a57f40f3356d583b6962029b36bf842823ab9c504"`
[INFO] running `"docker" "rm" "-f" "c55cfc473be3a8b6373b233a57f40f3356d583b6962029b36bf842823ab9c504"`
[INFO] [stdout] c55cfc473be3a8b6373b233a57f40f3356d583b6962029b36bf842823ab9c504
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tower-buffer/0.1.1:/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] 77d0ee4a7ae06849551535ac0e37d99f8f8899e189f8855d2f155ac7589bc3ce
[INFO] running `"docker" "start" "-a" "77d0ee4a7ae06849551535ac0e37d99f8f8899e189f8855d2f155ac7589bc3ce"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tower_buffer-219681a3eee7af08
[INFO] [stderr]      Running /opt/crater/target/debug/deps/buffer-c7e47b5f53d4a260
[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] [stdout] running 7 tests
[INFO] [stdout] test poll_ready_when_worker_is_dropped_early ... ok
[INFO] [stdout] test when_spawn_fails ... ok
[INFO] [stdout] test response_future_when_worker_is_dropped_early ... ok
[INFO] [stdout] test clears_canceled_requests ... ok
[INFO] [stdout] test req_and_res ... ok
[INFO] [stdout] test when_inner_fails ... ok
[INFO] [stdout] test when_inner_is_not_ready ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tower-buffer
[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" "77d0ee4a7ae06849551535ac0e37d99f8f8899e189f8855d2f155ac7589bc3ce"`
[INFO] running `"docker" "rm" "-f" "77d0ee4a7ae06849551535ac0e37d99f8f8899e189f8855d2f155ac7589bc3ce"`
[INFO] [stdout] 77d0ee4a7ae06849551535ac0e37d99f8f8899e189f8855d2f155ac7589bc3ce