[INFO] crate mobc-redis 0.2.6 is already in cache
[INFO] checking mobc-redis-0.2.6 against try#bcff76bad586cfb6874f179a4b66448e6b8a832c for pr-66919
[INFO] extracting crate mobc-redis 0.2.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate mobc-redis 0.2.6 on toolchain bcff76bad586cfb6874f179a4b66448e6b8a832c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bcff76bad586cfb6874f179a4b66448e6b8a832c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mobc-redis 0.2.6
[INFO] finished tweaking crates.io crate mobc-redis 0.2.6
[INFO] tweaked toml for crates.io crate mobc-redis 0.2.6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate mobc-redis 0.2.6 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bcff76bad586cfb6874f179a4b66448e6b8a832c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bcff76bad586cfb6874f179a4b66448e6b8a832c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 57af0719787c14fd17e94c81fcf63b2db662eee30c79b9b442900470861cafa5
[INFO] running `"docker" "start" "-a" "57af0719787c14fd17e94c81fcf63b2db662eee30c79b9b442900470861cafa5"`
[INFO] [stderr]     Checking pin-project-lite v0.1.1
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking async-task v1.0.0
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking tracing v0.1.10
[INFO] [stderr]     Checking tokio-io v0.2.0-alpha.6
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-codec v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.6
[INFO] [stderr]     Checking broadcaster v0.2.6
[INFO] [stderr]     Checking async-std v1.0.1
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.6
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking tokio-fs v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-net v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-timer v0.3.0-alpha.6
[INFO] [stderr]     Checking tokio v0.2.0-alpha.6
[INFO] [stderr]     Checking mobc v0.2.7
[INFO] [stderr]     Checking redis v0.13.0
[INFO] [stderr]     Checking mobc-redis v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `unwrap` found for type `()` in the current scope
[INFO] [stderr]   --> examples/new_runtime.rs:46:40
[INFO] [stderr]    |
[INFO] [stderr] 46 |         executor.spawn(Box::pin(task)).unwrap();
[INFO] [stderr]    |                                        ^^^^^^ method not found in `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `mobc-redis`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "57af0719787c14fd17e94c81fcf63b2db662eee30c79b9b442900470861cafa5"`
[INFO] running `"docker" "rm" "-f" "57af0719787c14fd17e94c81fcf63b2db662eee30c79b9b442900470861cafa5"`
[INFO] [stdout] 57af0719787c14fd17e94c81fcf63b2db662eee30c79b9b442900470861cafa5