[INFO] crate declarative-dataflow 0.2.0 is already in cache
[INFO] extracting crate declarative-dataflow 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/declarative-dataflow/0.2.0
[INFO] extracting crate declarative-dataflow 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/declarative-dataflow/0.2.0
[INFO] validating manifest of declarative-dataflow-0.2.0 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 declarative-dataflow-0.2.0 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 declarative-dataflow-0.2.0
[INFO] finished frobbing declarative-dataflow-0.2.0
[INFO] frobbed toml for declarative-dataflow-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/declarative-dataflow/0.2.0/Cargo.toml
[INFO] started frobbing declarative-dataflow-0.2.0
[INFO] finished frobbing declarative-dataflow-0.2.0
[INFO] frobbed toml for declarative-dataflow-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/declarative-dataflow/0.2.0/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 declarative-dataflow-0.2.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/declarative-dataflow/0.2.0:/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=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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] f95f91ce6cc2768590e39ad4c72b887bd13b3c3b5309ccdd2b56fc0ef1a9f3f3
[INFO] running `"docker" "start" "-a" "f95f91ce6cc2768590e39ad4c72b887bd13b3c3b5309ccdd2b56fc0ef1a9f3f3"`
[INFO] [stderr]    Compiling timely_bytes v0.10.0
[INFO] [stderr]    Compiling timely_logging v0.10.0
[INFO] [stderr]    Compiling abomonation v0.7.3
[INFO] [stderr]    Compiling timely_sort v0.1.6
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling abomonation_derive v0.3.0
[INFO] [stderr]    Compiling abomonation_derive v0.4.0
[INFO] [stderr]    Compiling timely_communication v0.10.0
[INFO] [stderr]    Compiling timely v0.10.0
[INFO] [stderr]    Compiling differential-dataflow v0.10.0
[INFO] [stderr]    Compiling declarative-dataflow v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:20:43
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>>;
[INFO] [stderr]    |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:24:40
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var>;
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn can_extend(&self, prefix: &AsBinding, target: Var) -> bool {
[INFO] [stderr]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:42:41
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn ready_to_extend(&self, _prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]    |                                         ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:46:44
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn required_to_extend(&self, _prefix: &AsBinding, _target: Var) -> Option<Option<Var>> {
[INFO] [stderr]    |                                            ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:113:40
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:122:43
[INFO] [stderr]     |
[INFO] [stderr] 122 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:156:40
[INFO] [stderr]     |
[INFO] [stderr] 156 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:168:43
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:220:40
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:224:43
[INFO] [stderr]     |
[INFO] [stderr] 224 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:257:40
[INFO] [stderr]     |
[INFO] [stderr] 257 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:265:43
[INFO] [stderr]     |
[INFO] [stderr] 265 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:323:40
[INFO] [stderr]     |
[INFO] [stderr] 323 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:335:43
[INFO] [stderr]     |
[INFO] [stderr] 335 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:524:41
[INFO] [stderr]     |
[INFO] [stderr] 524 |     fn ready_to_extend(&self, _prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:528:44
[INFO] [stderr]     |
[INFO] [stderr] 528 |     fn required_to_extend(&self, _prefix: &AsBinding, _target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:765:40
[INFO] [stderr]     |
[INFO] [stderr] 765 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:772:43
[INFO] [stderr]     |
[INFO] [stderr] 772 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/sinks/mod.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |             _ => unimplemented!(),
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `context`
[INFO] [stderr]   --> src/sinks/mod.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |         context: SinkingContext,
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_context`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.52s
[INFO] running `"docker" "inspect" "f95f91ce6cc2768590e39ad4c72b887bd13b3c3b5309ccdd2b56fc0ef1a9f3f3"`
[INFO] running `"docker" "rm" "-f" "f95f91ce6cc2768590e39ad4c72b887bd13b3c3b5309ccdd2b56fc0ef1a9f3f3"`
[INFO] [stdout] f95f91ce6cc2768590e39ad4c72b887bd13b3c3b5309ccdd2b56fc0ef1a9f3f3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/declarative-dataflow/0.2.0:/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=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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 247557ea263abcbe3ed7df985b0d24cde2424ea4cb2f9728ed60af2b2692ae04
[INFO] running `"docker" "start" "-a" "247557ea263abcbe3ed7df985b0d24cde2424ea4cb2f9728ed60af2b2692ae04"`
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling declarative-dataflow v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:20:43
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>>;
[INFO] [stderr]    |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:24:40
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var>;
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn can_extend(&self, prefix: &AsBinding, target: Var) -> bool {
[INFO] [stderr]    |                                   ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:42:41
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn ready_to_extend(&self, _prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]    |                                         ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/binding/mod.rs:46:44
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn required_to_extend(&self, _prefix: &AsBinding, _target: Var) -> Option<Option<Var>> {
[INFO] [stderr]    |                                            ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:113:40
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:122:43
[INFO] [stderr]     |
[INFO] [stderr] 122 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:156:40
[INFO] [stderr]     |
[INFO] [stderr] 156 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:168:43
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:220:40
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:224:43
[INFO] [stderr]     |
[INFO] [stderr] 224 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:257:40
[INFO] [stderr]     |
[INFO] [stderr] 257 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:265:43
[INFO] [stderr]     |
[INFO] [stderr] 265 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:323:40
[INFO] [stderr]     |
[INFO] [stderr] 323 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/binding/mod.rs:335:43
[INFO] [stderr]     |
[INFO] [stderr] 335 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:524:41
[INFO] [stderr]     |
[INFO] [stderr] 524 |     fn ready_to_extend(&self, _prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:528:44
[INFO] [stderr]     |
[INFO] [stderr] 528 |     fn required_to_extend(&self, _prefix: &AsBinding, _target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:765:40
[INFO] [stderr]     |
[INFO] [stderr] 765 |     fn ready_to_extend(&self, prefix: &AsBinding) -> Option<Var> {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:772:43
[INFO] [stderr]     |
[INFO] [stderr] 772 |     fn required_to_extend(&self, prefix: &AsBinding, target: Var) -> Option<Option<Var>> {
[INFO] [stderr]     |                                           ^^^^^^^^^ help: use `dyn`: `dyn AsBinding`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/sinks/mod.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |             _ => unimplemented!(),
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `context`
[INFO] [stderr]   --> src/sinks/mod.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |         context: SinkingContext,
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_context`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `declarative-dataflow`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name not_test tests/not_test.rs --color never --emit=dep-info,link -C debuginfo=2 --test -C metadata=2992c6f87344d122 -C extra-filename=-2992c6f87344d122 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern declarative_dataflow=/opt/crater/target/debug/deps/libdeclarative_dataflow-8e3eae4bce401e31.rlib --extern differential_dataflow=/opt/crater/target/debug/deps/libdifferential_dataflow-bd1b1d1e3054f4be.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-e5852fac43339a59.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern num_rational=/opt/crater/target/debug/deps/libnum_rational-8aca5453ca53f69c.rlib --extern serde=/opt/crater/target/debug/deps/libserde-5125a48878b1da57.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern timely=/opt/crater/target/debug/deps/libtimely-dd5712137b4670f3.rlib --extern timely_sort=/opt/crater/target/debug/deps/libtimely_sort-70cc55ec2b1962cc.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `declarative-dataflow`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name or_test tests/or_test.rs --color never --emit=dep-info,link -C debuginfo=2 --test -C metadata=5985e08f58616fd2 -C extra-filename=-5985e08f58616fd2 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern declarative_dataflow=/opt/crater/target/debug/deps/libdeclarative_dataflow-8e3eae4bce401e31.rlib --extern differential_dataflow=/opt/crater/target/debug/deps/libdifferential_dataflow-bd1b1d1e3054f4be.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-e5852fac43339a59.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern num_rational=/opt/crater/target/debug/deps/libnum_rational-8aca5453ca53f69c.rlib --extern serde=/opt/crater/target/debug/deps/libserde-5125a48878b1da57.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern timely=/opt/crater/target/debug/deps/libtimely-dd5712137b4670f3.rlib --extern timely_sort=/opt/crater/target/debug/deps/libtimely_sort-70cc55ec2b1962cc.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `declarative-dataflow`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name pull_test tests/pull_test.rs --color never --emit=dep-info,link -C debuginfo=2 --test -C metadata=475e9d3b155743eb -C extra-filename=-475e9d3b155743eb --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern declarative_dataflow=/opt/crater/target/debug/deps/libdeclarative_dataflow-8e3eae4bce401e31.rlib --extern differential_dataflow=/opt/crater/target/debug/deps/libdifferential_dataflow-bd1b1d1e3054f4be.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-e5852fac43339a59.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern num_rational=/opt/crater/target/debug/deps/libnum_rational-8aca5453ca53f69c.rlib --extern serde=/opt/crater/target/debug/deps/libserde-5125a48878b1da57.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern timely=/opt/crater/target/debug/deps/libtimely-dd5712137b4670f3.rlib --extern timely_sort=/opt/crater/target/debug/deps/libtimely_sort-70cc55ec2b1962cc.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `declarative-dataflow`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name query_test tests/query_test.rs --color never --emit=dep-info,link -C debuginfo=2 --test -C metadata=26fab44f972f9ec0 -C extra-filename=-26fab44f972f9ec0 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern declarative_dataflow=/opt/crater/target/debug/deps/libdeclarative_dataflow-8e3eae4bce401e31.rlib --extern differential_dataflow=/opt/crater/target/debug/deps/libdifferential_dataflow-bd1b1d1e3054f4be.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-e5852fac43339a59.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern num_rational=/opt/crater/target/debug/deps/libnum_rational-8aca5453ca53f69c.rlib --extern serde=/opt/crater/target/debug/deps/libserde-5125a48878b1da57.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern timely=/opt/crater/target/debug/deps/libtimely-dd5712137b4670f3.rlib --extern timely_sort=/opt/crater/target/debug/deps/libtimely_sort-70cc55ec2b1962cc.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `declarative-dataflow`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name aggregation_test tests/aggregation_test.rs --color never --emit=dep-info,link -C debuginfo=2 --test -C metadata=08c078d157ea6e0c -C extra-filename=-08c078d157ea6e0c --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern declarative_dataflow=/opt/crater/target/debug/deps/libdeclarative_dataflow-8e3eae4bce401e31.rlib --extern differential_dataflow=/opt/crater/target/debug/deps/libdifferential_dataflow-bd1b1d1e3054f4be.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-e5852fac43339a59.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern num_rational=/opt/crater/target/debug/deps/libnum_rational-8aca5453ca53f69c.rlib --extern serde=/opt/crater/target/debug/deps/libserde-5125a48878b1da57.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern timely=/opt/crater/target/debug/deps/libtimely-dd5712137b4670f3.rlib --extern timely_sort=/opt/crater/target/debug/deps/libtimely_sort-70cc55ec2b1962cc.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `declarative-dataflow`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name cardinality_one tests/cardinality_one.rs --color never --emit=dep-info,link -C debuginfo=2 --test -C metadata=7c10b71e00649c62 -C extra-filename=-7c10b71e00649c62 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern declarative_dataflow=/opt/crater/target/debug/deps/libdeclarative_dataflow-8e3eae4bce401e31.rlib --extern differential_dataflow=/opt/crater/target/debug/deps/libdifferential_dataflow-bd1b1d1e3054f4be.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-e5852fac43339a59.rlib --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib --extern num_rational=/opt/crater/target/debug/deps/libnum_rational-8aca5453ca53f69c.rlib --extern serde=/opt/crater/target/debug/deps/libserde-5125a48878b1da57.rlib --extern serde_derive=/opt/crater/target/debug/deps/libserde_derive-080adf51b2cd98e4.so --extern timely=/opt/crater/target/debug/deps/libtimely-dd5712137b4670f3.rlib --extern timely_sort=/opt/crater/target/debug/deps/libtimely_sort-70cc55ec2b1962cc.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "247557ea263abcbe3ed7df985b0d24cde2424ea4cb2f9728ed60af2b2692ae04"`
[INFO] running `"docker" "rm" "-f" "247557ea263abcbe3ed7df985b0d24cde2424ea4cb2f9728ed60af2b2692ae04"`
[INFO] [stdout] 247557ea263abcbe3ed7df985b0d24cde2424ea4cb2f9728ed60af2b2692ae04