[INFO] crate ns-router 0.1.6 is already in cache
[INFO] extracting crate ns-router 0.1.6 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/ns-router/0.1.6
[INFO] extracting crate ns-router 0.1.6 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/ns-router/0.1.6
[INFO] validating manifest of ns-router-0.1.6 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ns-router-0.1.6 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ns-router-0.1.6
[INFO] finished frobbing ns-router-0.1.6
[INFO] frobbed toml for ns-router-0.1.6 written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/ns-router/0.1.6/Cargo.toml
[INFO] started frobbing ns-router-0.1.6
[INFO] finished frobbing ns-router-0.1.6
[INFO] frobbed toml for ns-router-0.1.6 written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/ns-router/0.1.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ns-router-0.1.6 against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-7/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/ns-router/0.1.6:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1f78f731faf8a1c62733ac80f1ba1aba3649209d62835c61feccc4d2945e9072
[INFO] running `"docker" "start" "-a" "1f78f731faf8a1c62733ac80f1ba1aba3649209d62835c61feccc4d2945e9072"`
[INFO] [stderr]     Checking ns-router v0.1.6 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:21:46
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub(crate) suffixes: HashMap<String, Arc<Resolver>>,
[INFO] [stderr]    |                                              ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[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/config.rs:22:26
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub(crate) root: Arc<Resolver>,
[INFO] [stderr]    |                          ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:26:35
[INFO] [stderr]    |
[INFO] [stderr] 26 |     futures: FuturesUnordered<Box<Future<Item=FutureResult, Error=Void>>>,
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=FutureResult, Error=Void>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:40:19
[INFO] [stderr]    |
[INFO] [stderr] 40 |         next: Box<Future<Item=FutureResult, Error=Void>>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=FutureResult, Error=Void>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:43:19
[INFO] [stderr]    |
[INFO] [stderr] 43 |         task: Box<Continuation>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:46:19
[INFO] [stderr]    |
[INFO] [stderr] 46 |         task: Box<Continuation>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:74:20
[INFO] [stderr]    |
[INFO] [stderr] 74 |             as Box<Future<Item=FutureResult, Error=Void>>);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=FutureResult, Error=Void>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:92:75
[INFO] [stderr]    |
[INFO] [stderr] 92 | pub(crate) fn get_suffix<'x>(cfg: &'x Arc<Config>, name: &str) -> &'x Arc<Resolver> {
[INFO] [stderr]    |                                                                           ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/coroutine.rs:109:20
[INFO] [stderr]     |
[INFO] [stderr] 109 |             as Box<Future<Item=FutureResult, Error=Void>>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=FutureResult, Error=Void>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/coroutine.rs:232:34
[INFO] [stderr]     |
[INFO] [stderr] 232 |                         ) as Box<Future<Item=_, Error=_>>);
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=_, Error=_>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal.rs:17:14
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Task(Box<Continuation+Send>),
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal_traits.rs:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 |         sub: &Arc<Resolver>, cfg: &Arc<Config>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal_traits.rs:29:19
[INFO] [stderr]    |
[INFO] [stderr] 29 |         sub: &Arc<Resolver>, cfg: &Arc<Config>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal_traits.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sub: &Arc<Resolver>, _cfg: &Arc<Config>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal_traits.rs:96:19
[INFO] [stderr]    |
[INFO] [stderr] 96 |         sub: &Arc<Resolver>, _cfg: &Arc<Config>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/internal_traits.rs:130:20
[INFO] [stderr]     |
[INFO] [stderr] 130 |         _sub: &Arc<Resolver>, _cfg: &Arc<Config>,
[INFO] [stderr]     |                    ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/internal_traits.rs:137:20
[INFO] [stderr]     |
[INFO] [stderr] 137 |         _sub: &Arc<Resolver>, _cfg: &Arc<Config>,
[INFO] [stderr]     |                    ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:38:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub subscriber: Arc<Resolver>,
[INFO] [stderr]    |                         ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:45:25
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub subscriber: Arc<Resolver>,
[INFO] [stderr]    |                         ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:69:45
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub(crate) fn wrap_send(task: T) -> Box<Continuation + Send> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:70:46
[INFO] [stderr]    |
[INFO] [stderr] 70 |         Box::new(Wrapper(Some(task))) as Box<Continuation + Send>
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:75:40
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub(crate) fn wrap(task: T) -> Box<Continuation> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:76:46
[INFO] [stderr]    |
[INFO] [stderr] 76 |         Box::new(Wrapper(Some(task))) as Box<Continuation>
[INFO] [stderr]    |                                              ^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:21:46
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub(crate) suffixes: HashMap<String, Arc<Resolver>>,
[INFO] [stderr]    |                                              ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[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/config.rs:22:26
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub(crate) root: Arc<Resolver>,
[INFO] [stderr]    |                          ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:26:35
[INFO] [stderr]    |
[INFO] [stderr] 26 |     futures: FuturesUnordered<Box<Future<Item=FutureResult, Error=Void>>>,
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=FutureResult, Error=Void>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:40:19
[INFO] [stderr]    |
[INFO] [stderr] 40 |         next: Box<Future<Item=FutureResult, Error=Void>>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=FutureResult, Error=Void>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:43:19
[INFO] [stderr]    |
[INFO] [stderr] 43 |         task: Box<Continuation>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:46:19
[INFO] [stderr]    |
[INFO] [stderr] 46 |         task: Box<Continuation>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:74:20
[INFO] [stderr]    |
[INFO] [stderr] 74 |             as Box<Future<Item=FutureResult, Error=Void>>);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=FutureResult, Error=Void>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coroutine.rs:92:75
[INFO] [stderr]    |
[INFO] [stderr] 92 | pub(crate) fn get_suffix<'x>(cfg: &'x Arc<Config>, name: &str) -> &'x Arc<Resolver> {
[INFO] [stderr]    |                                                                           ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/coroutine.rs:109:20
[INFO] [stderr]     |
[INFO] [stderr] 109 |             as Box<Future<Item=FutureResult, Error=Void>>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=FutureResult, Error=Void>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/coroutine.rs:232:34
[INFO] [stderr]     |
[INFO] [stderr] 232 |                         ) as Box<Future<Item=_, Error=_>>);
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=_, Error=_>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal.rs:17:14
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Task(Box<Continuation+Send>),
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal_traits.rs:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 |         sub: &Arc<Resolver>, cfg: &Arc<Config>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal_traits.rs:29:19
[INFO] [stderr]    |
[INFO] [stderr] 29 |         sub: &Arc<Resolver>, cfg: &Arc<Config>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal_traits.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sub: &Arc<Resolver>, _cfg: &Arc<Config>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/internal_traits.rs:96:19
[INFO] [stderr]    |
[INFO] [stderr] 96 |         sub: &Arc<Resolver>, _cfg: &Arc<Config>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/internal_traits.rs:130:20
[INFO] [stderr]     |
[INFO] [stderr] 130 |         _sub: &Arc<Resolver>, _cfg: &Arc<Config>,
[INFO] [stderr]     |                    ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/internal_traits.rs:137:20
[INFO] [stderr]     |
[INFO] [stderr] 137 |         _sub: &Arc<Resolver>, _cfg: &Arc<Config>,
[INFO] [stderr]     |                    ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:38:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub subscriber: Arc<Resolver>,
[INFO] [stderr]    |                         ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:45:25
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub subscriber: Arc<Resolver>,
[INFO] [stderr]    |                         ^^^^^^^^ help: use `dyn`: `dyn Resolver`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:69:45
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub(crate) fn wrap_send(task: T) -> Box<Continuation + Send> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:70:46
[INFO] [stderr]    |
[INFO] [stderr] 70 |         Box::new(Wrapper(Some(task))) as Box<Continuation + Send>
[INFO] [stderr]    |                                              ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:75:40
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub(crate) fn wrap(task: T) -> Box<Continuation> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/subscr.rs:76:46
[INFO] [stderr]    |
[INFO] [stderr] 76 |         Box::new(Wrapper(Some(task))) as Box<Continuation>
[INFO] [stderr]    |                                              ^^^^^^^^^^^^ help: use `dyn`: `dyn Continuation`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.61s
[INFO] running `"docker" "inspect" "1f78f731faf8a1c62733ac80f1ba1aba3649209d62835c61feccc4d2945e9072"`
[INFO] running `"docker" "rm" "-f" "1f78f731faf8a1c62733ac80f1ba1aba3649209d62835c61feccc4d2945e9072"`
[INFO] [stdout] 1f78f731faf8a1c62733ac80f1ba1aba3649209d62835c61feccc4d2945e9072