[INFO] fetching crate tower-buffer 0.1.1...
[INFO] extracting crate tower-buffer 0.1.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/tower-buffer/0.1.1
[INFO] extracting crate tower-buffer 0.1.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tower-buffer/0.1.1
[INFO] validating manifest of tower-buffer-0.1.1 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 tower-buffer-0.1.1 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 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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/reg/tower-buffer/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 tower-buffer-0.1.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 4be855e492b34702821240f05005df34dfe8779101f7f3a9c3d0956a1cabe26f
[INFO] running `"docker" "start" "-a" "4be855e492b34702821240f05005df34dfe8779101f7f3a9c3d0956a1cabe26f"`
[INFO] [stderr]    Compiling tracing-core v0.1.2
[INFO] [stderr]    Compiling tracing v0.1.3
[INFO] [stderr]    Compiling tower-buffer v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.66s
[INFO] running `"docker" "inspect" "4be855e492b34702821240f05005df34dfe8779101f7f3a9c3d0956a1cabe26f"`
[INFO] running `"docker" "rm" "-f" "4be855e492b34702821240f05005df34dfe8779101f7f3a9c3d0956a1cabe26f"`
[INFO] [stdout] 4be855e492b34702821240f05005df34dfe8779101f7f3a9c3d0956a1cabe26f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6195facbc42dd54be05fd819018070fbc5c8c91ad85636bbbe3f0230ab28507c
[INFO] running `"docker" "start" "-a" "6195facbc42dd54be05fd819018070fbc5c8c91ad85636bbbe3f0230ab28507c"`
[INFO] [stderr]    Compiling tower-discover v0.1.0
[INFO] [stderr]    Compiling tower-load-shed v0.1.0
[INFO] [stderr]    Compiling tower-buffer v0.1.1
[INFO] [stderr]    Compiling tower-retry v0.1.0
[INFO] [stderr]    Compiling tower-limit v0.1.0
[INFO] [stderr]    Compiling tower-timeout v0.1.1
[INFO] [stderr]    Compiling tower-util 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 6.00s
[INFO] running `"docker" "inspect" "6195facbc42dd54be05fd819018070fbc5c8c91ad85636bbbe3f0230ab28507c"`
[INFO] running `"docker" "rm" "-f" "6195facbc42dd54be05fd819018070fbc5c8c91ad85636bbbe3f0230ab28507c"`
[INFO] [stdout] 6195facbc42dd54be05fd819018070fbc5c8c91ad85636bbbe3f0230ab28507c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] da7e694e7945a9817b4e061b750fac8da10de9b3367d975049bc3ab016f45a43
[INFO] running `"docker" "start" "-a" "da7e694e7945a9817b4e061b750fac8da10de9b3367d975049bc3ab016f45a43"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tower_buffer-e231094012373f33
[INFO] [stderr]      Running /opt/crater/target/debug/deps/buffer-8b0eb7e4ccb76b99
[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 when_spawn_fails ... ok
[INFO] [stdout] test poll_ready_when_worker_is_dropped_early ... ok
[INFO] [stdout] test req_and_res ... ok
[INFO] [stdout] test response_future_when_worker_is_dropped_early ... ok
[INFO] [stdout] test clears_canceled_requests ... ok
[INFO] [stdout] test when_inner_is_not_ready ... ok
[INFO] [stderr]    Doc-tests tower-buffer
[INFO] [stdout] test when_inner_fails ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 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" "da7e694e7945a9817b4e061b750fac8da10de9b3367d975049bc3ab016f45a43"`
[INFO] running `"docker" "rm" "-f" "da7e694e7945a9817b4e061b750fac8da10de9b3367d975049bc3ab016f45a43"`
[INFO] [stdout] da7e694e7945a9817b4e061b750fac8da10de9b3367d975049bc3ab016f45a43