[INFO] crate rust_redlock 0.4.0 is already in cache
[INFO] extracting crate rust_redlock 0.4.0 into work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/rust_redlock/0.4.0
[INFO] extracting crate rust_redlock 0.4.0 into work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/rust_redlock/0.4.0
[INFO] validating manifest of rust_redlock-0.4.0 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rust_redlock-0.4.0 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rust_redlock-0.4.0
[INFO] finished frobbing rust_redlock-0.4.0
[INFO] frobbed toml for rust_redlock-0.4.0 written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/rust_redlock/0.4.0/Cargo.toml
[INFO] started frobbing rust_redlock-0.4.0
[INFO] finished frobbing rust_redlock-0.4.0
[INFO] frobbed toml for rust_redlock-0.4.0 written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/rust_redlock/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rust_redlock-0.4.0 against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-3/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/rust_redlock/0.4.0:/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=forbid" "-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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4d9f57b7e896b7ab58f6b2b6fd1de442c9bafddedd60a30b476e8094595757ee
[INFO] running `"docker" "start" "-a" "4d9f57b7e896b7ab58f6b2b6fd1de442c9bafddedd60a30b476e8094595757ee"`
[INFO] [stderr]     Checking redis v0.5.4
[INFO] [stderr]     Checking rust_redlock v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/redlock.rs:165:25
[INFO] [stderr]     |
[INFO] [stderr] 165 |                         lock.unlock().is_ok(); // Just ingore the result
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/redlock.rs:174:29
[INFO] [stderr]     |
[INFO] [stderr] 174 |                             lock.unlock().is_ok(); // Just ingore the result
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/redlock.rs:165:25
[INFO] [stderr]     |
[INFO] [stderr] 165 |                         lock.unlock().is_ok(); // Just ingore the result
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/redlock.rs:174:29
[INFO] [stderr]     |
[INFO] [stderr] 174 |                             lock.unlock().is_ok(); // Just ingore the result
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.10s
[INFO] running `"docker" "inspect" "4d9f57b7e896b7ab58f6b2b6fd1de442c9bafddedd60a30b476e8094595757ee"`
[INFO] running `"docker" "rm" "-f" "4d9f57b7e896b7ab58f6b2b6fd1de442c9bafddedd60a30b476e8094595757ee"`
[INFO] [stdout] 4d9f57b7e896b7ab58f6b2b6fd1de442c9bafddedd60a30b476e8094595757ee