[INFO] fetching crate r2d2-memcache 0.1.1...
[INFO] extracting crate r2d2-memcache 0.1.1 into work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/r2d2-memcache/0.1.1
[INFO] extracting crate r2d2-memcache 0.1.1 into work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/r2d2-memcache/0.1.1
[INFO] validating manifest of r2d2-memcache-0.1.1 on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of r2d2-memcache-0.1.1 on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing r2d2-memcache-0.1.1
[INFO] finished frobbing r2d2-memcache-0.1.1
[INFO] frobbed toml for r2d2-memcache-0.1.1 written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/r2d2-memcache/0.1.1/Cargo.toml
[INFO] started frobbing r2d2-memcache-0.1.1
[INFO] finished frobbing r2d2-memcache-0.1.1
[INFO] frobbed toml for r2d2-memcache-0.1.1 written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/r2d2-memcache/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memcache v0.7.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking r2d2-memcache-0.1.1 against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-5/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/r2d2-memcache/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=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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 07409994d7b78737a5e35fda7610bfda1e00b392d1101b4ef583da8dbf9673a4
[INFO] running `"docker" "start" "-a" "07409994d7b78737a5e35fda7610bfda1e00b392d1101b4ef583da8dbf9673a4"`
[INFO] [stderr]     Checking memcache v0.7.1
[INFO] [stderr]     Checking r2d2-memcache v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 |         match self.cause() {
[INFO] [stderr]    |                    ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:32:42
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Error::Other(ref err) => err.cause()
[INFO] [stderr]    |                                          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 |         match self.cause() {
[INFO] [stderr]    |                    ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:32:42
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Error::Other(ref err) => err.cause()
[INFO] [stderr]    |                                          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pool`
[INFO] [stderr]   --> tests/test_connection.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let pool = r2d2::Pool::new(config, manager).unwrap();
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_pool`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `"docker" "inspect" "07409994d7b78737a5e35fda7610bfda1e00b392d1101b4ef583da8dbf9673a4"`
[INFO] running `"docker" "rm" "-f" "07409994d7b78737a5e35fda7610bfda1e00b392d1101b4ef583da8dbf9673a4"`
[INFO] [stdout] 07409994d7b78737a5e35fda7610bfda1e00b392d1101b4ef583da8dbf9673a4