[INFO] crate ferrum 0.2.1 is already in cache
[INFO] extracting crate ferrum 0.2.1 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/ferrum/0.2.1
[INFO] extracting crate ferrum 0.2.1 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/ferrum/0.2.1
[INFO] validating manifest of ferrum-0.2.1 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ferrum-0.2.1 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ferrum-0.2.1
[INFO] finished frobbing ferrum-0.2.1
[INFO] frobbed toml for ferrum-0.2.1 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/ferrum/0.2.1/Cargo.toml
[INFO] started frobbing ferrum-0.2.1
[INFO] finished frobbing ferrum-0.2.1
[INFO] frobbed toml for ferrum-0.2.1 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/ferrum/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ferrum-0.2.1 against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/ferrum/0.2.1:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cd1105fcd96018da7d954ad6c77f838030cb985d9f6c9ea81812c5e52fee09a7
[INFO] running `"docker" "start" "-a" "cd1105fcd96018da7d954ad6c77f838030cb985d9f6c9ea81812c5e52fee09a7"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking ferrum-plugin v0.3.0
[INFO] [stderr]     Checking ferrum v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:30:20
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub error: Box<Error + Send>,
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send`
[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/error.rs:59:32
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:49:29
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub type TypeMapInner = UnsafeAny + Send + Sync;
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn UnsafeAny + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:197:34
[INFO] [stderr]     |
[INFO] [stderr] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stderr]     |                                  ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:197:51
[INFO] [stderr]     |
[INFO] [stderr] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stderr]     |                                                   ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:206:22
[INFO] [stderr]     |
[INFO] [stderr] 206 |     befores: Vec<Box<BeforeMiddleware>>,
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:207:21
[INFO] [stderr]     |
[INFO] [stderr] 207 |     afters: Vec<Box<AfterMiddleware>>,
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:210:25
[INFO] [stderr]     |
[INFO] [stderr] 210 |     handler: Option<Box<Handler>>
[INFO] [stderr]     |                         ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:219:52
[INFO] [stderr]     |
[INFO] [stderr] 219 |             handler: Some(Box::new(handler) as Box<Handler>)
[INFO] [stderr]     |                                                    ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:231:51
[INFO] [stderr]     |
[INFO] [stderr] 231 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:232:49
[INFO] [stderr]     |
[INFO] [stderr] 232 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:241:51
[INFO] [stderr]     |
[INFO] [stderr] 241 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:250:49
[INFO] [stderr]     |
[INFO] [stderr] 250 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:396:22
[INFO] [stderr]     |
[INFO] [stderr] 396 | impl Handler for Box<Handler> {
[INFO] [stderr]     |                      ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:410:31
[INFO] [stderr]     |
[INFO] [stderr] 410 | impl BeforeMiddleware for Box<BeforeMiddleware> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:440:30
[INFO] [stderr]     |
[INFO] [stderr] 440 | impl AfterMiddleware for Box<AfterMiddleware> {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:461:25
[INFO] [stderr]     |
[INFO] [stderr] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stderr]     |                         ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:461:42
[INFO] [stderr]     |
[INFO] [stderr] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stderr]     |                                          ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:463:34
[INFO] [stderr]     |
[INFO] [stderr] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stderr]     |                                  ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:463:51
[INFO] [stderr]     |
[INFO] [stderr] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stderr]     |                                                   ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:30:20
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub error: Box<Error + Send>,
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send`
[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/error.rs:59:32
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:49:29
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub type TypeMapInner = UnsafeAny + Send + Sync;
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn UnsafeAny + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:197:34
[INFO] [stderr]     |
[INFO] [stderr] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stderr]     |                                  ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:197:51
[INFO] [stderr]     |
[INFO] [stderr] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stderr]     |                                                   ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:206:22
[INFO] [stderr]     |
[INFO] [stderr] 206 |     befores: Vec<Box<BeforeMiddleware>>,
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:207:21
[INFO] [stderr]     |
[INFO] [stderr] 207 |     afters: Vec<Box<AfterMiddleware>>,
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:210:25
[INFO] [stderr]     |
[INFO] [stderr] 210 |     handler: Option<Box<Handler>>
[INFO] [stderr]     |                         ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:219:52
[INFO] [stderr]     |
[INFO] [stderr] 219 |             handler: Some(Box::new(handler) as Box<Handler>)
[INFO] [stderr]     |                                                    ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:231:51
[INFO] [stderr]     |
[INFO] [stderr] 231 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:232:49
[INFO] [stderr]     |
[INFO] [stderr] 232 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:241:51
[INFO] [stderr]     |
[INFO] [stderr] 241 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:250:49
[INFO] [stderr]     |
[INFO] [stderr] 250 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:396:22
[INFO] [stderr]     |
[INFO] [stderr] 396 | impl Handler for Box<Handler> {
[INFO] [stderr]     |                      ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:410:31
[INFO] [stderr]     |
[INFO] [stderr] 410 | impl BeforeMiddleware for Box<BeforeMiddleware> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:440:30
[INFO] [stderr]     |
[INFO] [stderr] 440 | impl AfterMiddleware for Box<AfterMiddleware> {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:461:25
[INFO] [stderr]     |
[INFO] [stderr] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stderr]     |                         ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:461:42
[INFO] [stderr]     |
[INFO] [stderr] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stderr]     |                                          ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:463:34
[INFO] [stderr]     |
[INFO] [stderr] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stderr]     |                                  ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/mod.rs:463:51
[INFO] [stderr]     |
[INFO] [stderr] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stderr]     |                                                   ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/test.rs:195:37
[INFO] [stderr]     |
[INFO] [stderr] 195 |         .map(|m| Box::new(m) as Box<BeforeMiddleware>)
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BeforeMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/test.rs:202:37
[INFO] [stderr]     |
[INFO] [stderr] 202 |         .map(|m| Box::new(m) as Box<AfterMiddleware>)
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/middleware/test.rs:207:48
[INFO] [stderr]     |
[INFO] [stderr] 207 |         handler: Some(Box::new(handler) as Box<Handler>),
[INFO] [stderr]     |                                                ^^^^^^^ help: use `dyn`: `dyn Handler`
[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:60:20
[INFO] [stderr]    |
[INFO] [stderr] 60 |         self.error.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:60:20
[INFO] [stderr]    |
[INFO] [stderr] 60 |         self.error.cause()
[INFO] [stderr]    |                    ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/simple_routing.rs:12:33
[INFO] [stderr]    |
[INFO] [stderr] 12 |     routes: HashMap<String, Box<Handler>>
[INFO] [stderr]    |                                 ^^^^^^^ help: use `dyn`: `dyn Handler`
[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]   --> examples/around.rs:47:34
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stderr]    |                                  ^^^^^^^ help: use `dyn`: `dyn Handler`
[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]   --> examples/around.rs:47:51
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stderr]    |                                                   ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/around.rs:51:19
[INFO] [stderr]    |
[INFO] [stderr] 51 |         }) as Box<Handler>
[INFO] [stderr]    |                   ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.44s
[INFO] running `"docker" "inspect" "cd1105fcd96018da7d954ad6c77f838030cb985d9f6c9ea81812c5e52fee09a7"`
[INFO] running `"docker" "rm" "-f" "cd1105fcd96018da7d954ad6c77f838030cb985d9f6c9ea81812c5e52fee09a7"`
[INFO] [stdout] cd1105fcd96018da7d954ad6c77f838030cb985d9f6c9ea81812c5e52fee09a7