[INFO] cloning repository comnik/declarative-dataflow
[INFO] running `"git" "clone" "--bare" "git://github.com/comnik/declarative-dataflow.git" "work/cache/sources/gh/comnik/declarative-dataflow"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/comnik/declarative-dataflow'...
[INFO] running `"git" "clone" "work/cache/sources/gh/comnik/declarative-dataflow" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/comnik/declarative-dataflow"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/comnik/declarative-dataflow'...
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[INFO] running `"git" "clone" "work/cache/sources/gh/comnik/declarative-dataflow" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/comnik/declarative-dataflow"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/comnik/declarative-dataflow'...
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[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a9589e9d0b9db8d3bba8b55450c5f4036b69bd06
[INFO] sha for GitHub repo comnik/declarative-dataflow: a9589e9d0b9db8d3bba8b55450c5f4036b69bd06
[INFO] validating manifest of comnik/declarative-dataflow 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 comnik/declarative-dataflow 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 comnik/declarative-dataflow
[INFO] finished frobbing comnik/declarative-dataflow
[INFO] frobbed toml for comnik/declarative-dataflow written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/comnik/declarative-dataflow/Cargo.toml
[INFO] started frobbing comnik/declarative-dataflow
[INFO] finished frobbing comnik/declarative-dataflow
[INFO] frobbed toml for comnik/declarative-dataflow written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/comnik/declarative-dataflow/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] [stderr]     Updating git repository `https://github.com/TimelyDataflow/differential-dataflow`
[INFO] [stderr]     Updating git repository `https://github.com/TimelyDataflow/timely-dataflow`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Updating git repository `https://github.com/TimelyDataflow/differential-dataflow`
[INFO] [stderr]     Updating git repository `https://github.com/TimelyDataflow/timely-dataflow`
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fixed v0.3.2
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking comnik/declarative-dataflow against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-4/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/comnik/declarative-dataflow:/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] 2a4cdfbfa9878c69cdc8ccdf20bfb187be569e67f05e4378402601c722f38863
[INFO] running `"docker" "start" "-a" "2a4cdfbfa9878c69cdc8ccdf20bfb187be569e67f05e4378402601c722f38863"`
[INFO] [stderr]     Checking abomonation v0.7.2
[INFO] [stderr]     Checking timely_logging v0.9.0 (https://github.com/TimelyDataflow/timely-dataflow#9430c46a)
[INFO] [stderr]     Checking timely_bytes v0.9.0 (https://github.com/TimelyDataflow/timely-dataflow#9430c46a)
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling abomonation_derive v0.3.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling abomonation_derive v0.4.0
[INFO] [stderr]     Checking timely_communication v0.9.0 (https://github.com/TimelyDataflow/timely-dataflow#9430c46a)
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking timely v0.9.0 (https://github.com/TimelyDataflow/timely-dataflow#9430c46a)
[INFO] [stderr]     Checking num-bigint v0.2.2
[INFO] [stderr]     Checking differential-dataflow v0.9.0 (https://github.com/TimelyDataflow/differential-dataflow#92134466)
[INFO] [stderr]     Checking declarative-dataflow v0.1.0 (/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:523:41
[INFO] [stderr]     |
[INFO] [stderr] 523 |     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:527:44
[INFO] [stderr]     |
[INFO] [stderr] 527 |     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:764:40
[INFO] [stderr]     |
[INFO] [stderr] 764 |     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:771:43
[INFO] [stderr]     |
[INFO] [stderr] 771 |     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: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:523:41
[INFO] [stderr]     |
[INFO] [stderr] 523 |     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:527:44
[INFO] [stderr]     |
[INFO] [stderr] 527 |     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:764:40
[INFO] [stderr]     |
[INFO] [stderr] 764 |     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:771:43
[INFO] [stderr]     |
[INFO] [stderr] 771 |     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] 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 54.47s
[INFO] running `"docker" "inspect" "2a4cdfbfa9878c69cdc8ccdf20bfb187be569e67f05e4378402601c722f38863"`
[INFO] running `"docker" "rm" "-f" "2a4cdfbfa9878c69cdc8ccdf20bfb187be569e67f05e4378402601c722f38863"`
[INFO] [stdout] 2a4cdfbfa9878c69cdc8ccdf20bfb187be569e67f05e4378402601c722f38863