[INFO] crate r2d2-memcache 0.1.1 is already in cache
[INFO] extracting crate r2d2-memcache 0.1.1 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/r2d2-memcache/0.1.1
[INFO] extracting crate r2d2-memcache 0.1.1 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/r2d2-memcache/0.1.1
[INFO] validating manifest of r2d2-memcache-0.1.1 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of r2d2-memcache-0.1.1 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-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-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/r2d2-memcache/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building r2d2-memcache-0.1.1 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 3d3d07eb6050f8f3a4498a8c8d89701e70b57830820fac88916bd685568064ba
[INFO] running `"docker" "start" "-a" "3d3d07eb6050f8f3a4498a8c8d89701e70b57830820fac88916bd685568064ba"`
[INFO] [stderr]    Compiling memcache v0.7.1
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `"docker" "inspect" "3d3d07eb6050f8f3a4498a8c8d89701e70b57830820fac88916bd685568064ba"`
[INFO] running `"docker" "rm" "-f" "3d3d07eb6050f8f3a4498a8c8d89701e70b57830820fac88916bd685568064ba"`
[INFO] [stdout] 3d3d07eb6050f8f3a4498a8c8d89701e70b57830820fac88916bd685568064ba
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2283f8fb777e8d3d4cf377d0d20b2b9f0a54f1edb8eec422071406a8e1d5cd87
[INFO] running `"docker" "start" "-a" "2283f8fb777e8d3d4cf377d0d20b2b9f0a54f1edb8eec422071406a8e1d5cd87"`
[INFO] [stderr]    Compiling 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: 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 2.12s
[INFO] running `"docker" "inspect" "2283f8fb777e8d3d4cf377d0d20b2b9f0a54f1edb8eec422071406a8e1d5cd87"`
[INFO] running `"docker" "rm" "-f" "2283f8fb777e8d3d4cf377d0d20b2b9f0a54f1edb8eec422071406a8e1d5cd87"`
[INFO] [stdout] 2283f8fb777e8d3d4cf377d0d20b2b9f0a54f1edb8eec422071406a8e1d5cd87