[INFO] crate r2d2_postgres 0.15.0-rc.1 is already in cache
[INFO] extracting crate r2d2_postgres 0.15.0-rc.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/r2d2_postgres/0.15.0-rc.1
[INFO] extracting crate r2d2_postgres 0.15.0-rc.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/r2d2_postgres/0.15.0-rc.1
[INFO] validating manifest of r2d2_postgres-0.15.0-rc.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of r2d2_postgres-0.15.0-rc.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing r2d2_postgres-0.15.0-rc.1
[INFO] finished frobbing r2d2_postgres-0.15.0-rc.1
[INFO] frobbed toml for r2d2_postgres-0.15.0-rc.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/r2d2_postgres/0.15.0-rc.1/Cargo.toml
[INFO] started frobbing r2d2_postgres-0.15.0-rc.1
[INFO] finished frobbing r2d2_postgres-0.15.0-rc.1
[INFO] frobbed toml for r2d2_postgres-0.15.0-rc.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/r2d2_postgres/0.15.0-rc.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing r2d2_postgres-0.15.0-rc.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/r2d2_postgres/0.15.0-rc.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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f34f307b0fe9d11e1f8bbce3afbae57797231aaee9f7dba369c006552c3cb23b
[INFO] running `"docker" "start" "-a" "f34f307b0fe9d11e1f8bbce3afbae57797231aaee9f7dba369c006552c3cb23b"`
[INFO] [stderr]    Compiling rent_to_own v0.1.0
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.2
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling postgres-protocol v0.4.1
[INFO] [stderr]    Compiling r2d2 v0.8.5
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling derive_state_machine_future v0.2.0
[INFO] [stderr]    Compiling state_machine_future v0.2.0
[INFO] [stderr]    Compiling tokio-postgres v0.4.0-rc.3
[INFO] [stderr] warning[E0381]: use of possibly uninitialized variable: `_`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-postgres-0.4.0-rc.3/src/proto/copy_in.rs:171:44
[INFO] [stderr]     |
[INFO] [stderr] 171 |               let buf: Box<dyn Buf + Send> = loop {
[INFO] [stderr]     |  ____________________________________________^
[INFO] [stderr] 172 | |                 match try_ready!(state.stream.poll().map_err(Error::copy_in_stream)) {
[INFO] [stderr] 173 | |                     Some(buf) => {
[INFO] [stderr] 174 | |                         let buf = buf.into_buf();
[INFO] [stderr] ...   |
[INFO] [stderr] 191 | |                 }
[INFO] [stderr] 192 | |             };
[INFO] [stderr]     | |_____________^ use of possibly uninitialized value
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling postgres v0.16.0-rc.2
[INFO] [stderr]    Compiling r2d2_postgres v0.15.0-rc.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.21s
[INFO] running `"docker" "inspect" "f34f307b0fe9d11e1f8bbce3afbae57797231aaee9f7dba369c006552c3cb23b"`
[INFO] running `"docker" "rm" "-f" "f34f307b0fe9d11e1f8bbce3afbae57797231aaee9f7dba369c006552c3cb23b"`
[INFO] [stdout] f34f307b0fe9d11e1f8bbce3afbae57797231aaee9f7dba369c006552c3cb23b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/r2d2_postgres/0.15.0-rc.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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8e2723e115c38baea2c6bbb2a8e139e1822c2160a61c1e4d51ee84c95cf4f092
[INFO] running `"docker" "start" "-a" "8e2723e115c38baea2c6bbb2a8e139e1822c2160a61c1e4d51ee84c95cf4f092"`
[INFO] [stderr]    Compiling r2d2_postgres v0.15.0-rc.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `"docker" "inspect" "8e2723e115c38baea2c6bbb2a8e139e1822c2160a61c1e4d51ee84c95cf4f092"`
[INFO] running `"docker" "rm" "-f" "8e2723e115c38baea2c6bbb2a8e139e1822c2160a61c1e4d51ee84c95cf4f092"`
[INFO] [stdout] 8e2723e115c38baea2c6bbb2a8e139e1822c2160a61c1e4d51ee84c95cf4f092
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/r2d2_postgres/0.15.0-rc.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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 59cac1faa9ca2412eaa555c4ffbdd95b7f77b3e75154b97b7304f194c6bfdd0f
[INFO] running `"docker" "start" "-a" "59cac1faa9ca2412eaa555c4ffbdd95b7f77b3e75154b97b7304f194c6bfdd0f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/r2d2_postgres-3ffc378c5ce10294
[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] [stderr]    Doc-tests r2d2_postgres
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - PostgresConnectionManager (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "59cac1faa9ca2412eaa555c4ffbdd95b7f77b3e75154b97b7304f194c6bfdd0f"`
[INFO] running `"docker" "rm" "-f" "59cac1faa9ca2412eaa555c4ffbdd95b7f77b3e75154b97b7304f194c6bfdd0f"`
[INFO] [stdout] 59cac1faa9ca2412eaa555c4ffbdd95b7f77b3e75154b97b7304f194c6bfdd0f