[INFO] fetching crate ferrum 0.2.1...
[INFO] testing ferrum-0.2.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate ferrum 0.2.1 into /workspace/builds/worker-25/source
[INFO] validating manifest of crates.io crate ferrum 0.2.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ferrum 0.2.1
[INFO] finished tweaking crates.io crate ferrum 0.2.1
[INFO] tweaked toml for crates.io crate ferrum 0.2.1 written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stdout] 09685cb918ae6a423cd48231f03400944aaabf9aed09ba4889e4fd57dace2b06
[INFO] running `Command { std: "docker" "start" "-a" "09685cb918ae6a423cd48231f03400944aaabf9aed09ba4889e4fd57dace2b06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09685cb918ae6a423cd48231f03400944aaabf9aed09ba4889e4fd57dace2b06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09685cb918ae6a423cd48231f03400944aaabf9aed09ba4889e4fd57dace2b06", kill_on_drop: false }`
[INFO] [stdout] 09685cb918ae6a423cd48231f03400944aaabf9aed09ba4889e4fd57dace2b06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be1d706fa7188b64abfbe1bb34193c2f6779b514675eeb0123d379e9880825b5
[INFO] running `Command { std: "docker" "start" "-a" "be1d706fa7188b64abfbe1bb34193c2f6779b514675eeb0123d379e9880825b5", kill_on_drop: false }`
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[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:206:22
[INFO] [stdout]     |
[INFO] [stdout] 206 |     befores: Vec<Box<BeforeMiddleware>>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 206 -     befores: Vec<Box<BeforeMiddleware>>,
[INFO] [stdout] 206 +     befores: Vec<Box<dyn BeforeMiddleware>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:207:21
[INFO] [stdout]     |
[INFO] [stdout] 207 |     afters: Vec<Box<AfterMiddleware>>,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 207 -     afters: Vec<Box<AfterMiddleware>>,
[INFO] [stdout] 207 +     afters: Vec<Box<dyn AfterMiddleware>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:210:25
[INFO] [stdout]     |
[INFO] [stdout] 210 |     handler: Option<Box<Handler>>
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 210 -     handler: Option<Box<Handler>>
[INFO] [stdout] 210 +     handler: Option<Box<dyn Handler>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:49:29
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub type TypeMapInner = UnsafeAny + Send + Sync;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 -     pub type TypeMapInner = UnsafeAny + Send + Sync;
[INFO] [stdout] 49 +     pub type TypeMapInner = dyn UnsafeAny + Send + Sync;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub error: Box<Error + Send>,
[INFO] [stdout]    |                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 -     pub error: Box<Error + Send>,
[INFO] [stdout] 30 +     pub error: Box<dyn Error + Send>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:59:32
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 59 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 59 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:396:22
[INFO] [stdout]     |
[INFO] [stdout] 396 | impl Handler for Box<Handler> {
[INFO] [stdout]     |                      ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 396 - impl Handler for Box<Handler> {
[INFO] [stdout] 396 + impl Handler for Box<dyn Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:410:31
[INFO] [stdout]     |
[INFO] [stdout] 410 | impl BeforeMiddleware for Box<BeforeMiddleware> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 410 - impl BeforeMiddleware for Box<BeforeMiddleware> {
[INFO] [stdout] 410 + impl BeforeMiddleware for Box<dyn BeforeMiddleware> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:440:30
[INFO] [stdout]     |
[INFO] [stdout] 440 | impl AfterMiddleware for Box<AfterMiddleware> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 440 - impl AfterMiddleware for Box<AfterMiddleware> {
[INFO] [stdout] 440 + impl AfterMiddleware for Box<dyn AfterMiddleware> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:461:25
[INFO] [stdout]     |
[INFO] [stdout] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 461 -     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout] 461 +     where F: FnOnce(Box<dyn Handler>) -> Box<Handler>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:461:42
[INFO] [stdout]     |
[INFO] [stdout] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout]     |                                          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 461 -     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout] 461 +     where F: FnOnce(Box<Handler>) -> Box<dyn Handler>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:197:51
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout]     |                                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 197 -     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout] 197 +     fn around(self, handler: Box<Handler>) -> Box<dyn Handler>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:197:34
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout]     |                                  ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 197 -     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout] 197 +     fn around(self, handler: Box<dyn Handler>) -> Box<Handler>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:463:51
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout]     |                                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 463 -     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout] 463 +     fn around(self, handler: Box<Handler>) -> Box<dyn Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:463:34
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout]     |                                  ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 463 -     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout] 463 +     fn around(self, handler: Box<dyn Handler>) -> Box<Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.error.description()
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:60:20
[INFO] [stdout]    |
[INFO] [stdout] 60 |         self.error.cause()
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:219:52
[INFO] [stdout]     |
[INFO] [stdout] 219 |             handler: Some(Box::new(handler) as Box<Handler>)
[INFO] [stdout]     |                                                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 219 -             handler: Some(Box::new(handler) as Box<Handler>)
[INFO] [stdout] 219 +             handler: Some(Box::new(handler) as Box<dyn Handler>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:231:51
[INFO] [stdout]     |
[INFO] [stdout] 231 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 231 -         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout] 231 +         self.befores.push(Box::new(before) as Box<dyn BeforeMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:232:49
[INFO] [stdout]     |
[INFO] [stdout] 232 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 232 -         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout] 232 +         self.afters.push(Box::new(after) as Box<dyn AfterMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:241:51
[INFO] [stdout]     |
[INFO] [stdout] 241 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 241 -         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout] 241 +         self.befores.push(Box::new(before) as Box<dyn BeforeMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:250:49
[INFO] [stdout]     |
[INFO] [stdout] 250 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 250 -         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout] 250 +         self.afters.push(Box::new(after) as Box<dyn AfterMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.15s
[INFO] running `Command { std: "docker" "inspect" "be1d706fa7188b64abfbe1bb34193c2f6779b514675eeb0123d379e9880825b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be1d706fa7188b64abfbe1bb34193c2f6779b514675eeb0123d379e9880825b5", kill_on_drop: false }`
[INFO] [stdout] be1d706fa7188b64abfbe1bb34193c2f6779b514675eeb0123d379e9880825b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0a0e40282b4ba1a0645aa9efca562e34479c5832add35504fe9718440003e4c
[INFO] running `Command { std: "docker" "start" "-a" "d0a0e40282b4ba1a0645aa9efca562e34479c5832add35504fe9718440003e4c", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:206:22
[INFO] [stdout]     |
[INFO] [stdout] 206 |     befores: Vec<Box<BeforeMiddleware>>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 206 -     befores: Vec<Box<BeforeMiddleware>>,
[INFO] [stdout] 206 +     befores: Vec<Box<dyn BeforeMiddleware>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:207:21
[INFO] [stdout]     |
[INFO] [stdout] 207 |     afters: Vec<Box<AfterMiddleware>>,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 207 -     afters: Vec<Box<AfterMiddleware>>,
[INFO] [stdout] 207 +     afters: Vec<Box<dyn AfterMiddleware>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:210:25
[INFO] [stdout]     |
[INFO] [stdout] 210 |     handler: Option<Box<Handler>>
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 210 -     handler: Option<Box<Handler>>
[INFO] [stdout] 210 +     handler: Option<Box<dyn Handler>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:49:29
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub type TypeMapInner = UnsafeAny + Send + Sync;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 -     pub type TypeMapInner = UnsafeAny + Send + Sync;
[INFO] [stdout] 49 +     pub type TypeMapInner = dyn UnsafeAny + Send + Sync;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub error: Box<Error + Send>,
[INFO] [stdout]    |                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 -     pub error: Box<Error + Send>,
[INFO] [stdout] 30 +     pub error: Box<dyn Error + Send>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:59:32
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 59 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 59 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:396:22
[INFO] [stdout]     |
[INFO] [stdout] 396 | impl Handler for Box<Handler> {
[INFO] [stdout]     |                      ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 396 - impl Handler for Box<Handler> {
[INFO] [stdout] 396 + impl Handler for Box<dyn Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:410:31
[INFO] [stdout]     |
[INFO] [stdout] 410 | impl BeforeMiddleware for Box<BeforeMiddleware> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 410 - impl BeforeMiddleware for Box<BeforeMiddleware> {
[INFO] [stdout] 410 + impl BeforeMiddleware for Box<dyn BeforeMiddleware> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:440:30
[INFO] [stdout]     |
[INFO] [stdout] 440 | impl AfterMiddleware for Box<AfterMiddleware> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 440 - impl AfterMiddleware for Box<AfterMiddleware> {
[INFO] [stdout] 440 + impl AfterMiddleware for Box<dyn AfterMiddleware> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:461:25
[INFO] [stdout]     |
[INFO] [stdout] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 461 -     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout] 461 +     where F: FnOnce(Box<dyn Handler>) -> Box<Handler>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:461:42
[INFO] [stdout]     |
[INFO] [stdout] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout]     |                                          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 461 -     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout] 461 +     where F: FnOnce(Box<Handler>) -> Box<dyn Handler>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:197:51
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout]     |                                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 197 -     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout] 197 +     fn around(self, handler: Box<Handler>) -> Box<dyn Handler>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:197:34
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout]     |                                  ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 197 -     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout] 197 +     fn around(self, handler: Box<dyn Handler>) -> Box<Handler>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:463:51
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout]     |                                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 463 -     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout] 463 +     fn around(self, handler: Box<Handler>) -> Box<dyn Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:463:34
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout]     |                                  ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 463 -     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout] 463 +     fn around(self, handler: Box<dyn Handler>) -> Box<Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.error.description()
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:60:20
[INFO] [stdout]    |
[INFO] [stdout] 60 |         self.error.cause()
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:219:52
[INFO] [stdout]     |
[INFO] [stdout] 219 |             handler: Some(Box::new(handler) as Box<Handler>)
[INFO] [stdout]     |                                                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 219 -             handler: Some(Box::new(handler) as Box<Handler>)
[INFO] [stdout] 219 +             handler: Some(Box::new(handler) as Box<dyn Handler>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:231:51
[INFO] [stdout]     |
[INFO] [stdout] 231 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 231 -         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout] 231 +         self.befores.push(Box::new(before) as Box<dyn BeforeMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:232:49
[INFO] [stdout]     |
[INFO] [stdout] 232 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 232 -         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout] 232 +         self.afters.push(Box::new(after) as Box<dyn AfterMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:241:51
[INFO] [stdout]     |
[INFO] [stdout] 241 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 241 -         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout] 241 +         self.befores.push(Box::new(before) as Box<dyn BeforeMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:250:49
[INFO] [stdout]     |
[INFO] [stdout] 250 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 250 -         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout] 250 +         self.afters.push(Box::new(after) as Box<dyn AfterMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ferrum v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/around.rs:47:51
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout]    |                                                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 -     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout] 47 +     fn around(self, handler: Box<Handler>) -> Box<dyn Handler> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/around.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 -     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout] 47 +     fn around(self, handler: Box<dyn Handler>) -> Box<Handler> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/around.rs:51:19
[INFO] [stdout]    |
[INFO] [stdout] 51 |         }) as Box<Handler>
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 51 -         }) as Box<Handler>
[INFO] [stdout] 51 +         }) as Box<dyn Handler>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/simple_routing.rs:12:33
[INFO] [stdout]    |
[INFO] [stdout] 12 |     routes: HashMap<String, Box<Handler>>
[INFO] [stdout]    |                                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     routes: HashMap<String, Box<Handler>>
[INFO] [stdout] 12 +     routes: HashMap<String, Box<dyn Handler>>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:206:22
[INFO] [stdout]     |
[INFO] [stdout] 206 |     befores: Vec<Box<BeforeMiddleware>>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 206 -     befores: Vec<Box<BeforeMiddleware>>,
[INFO] [stdout] 206 +     befores: Vec<Box<dyn BeforeMiddleware>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:207:21
[INFO] [stdout]     |
[INFO] [stdout] 207 |     afters: Vec<Box<AfterMiddleware>>,
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 207 -     afters: Vec<Box<AfterMiddleware>>,
[INFO] [stdout] 207 +     afters: Vec<Box<dyn AfterMiddleware>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:210:25
[INFO] [stdout]     |
[INFO] [stdout] 210 |     handler: Option<Box<Handler>>
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 210 -     handler: Option<Box<Handler>>
[INFO] [stdout] 210 +     handler: Option<Box<dyn Handler>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:49:29
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub type TypeMapInner = UnsafeAny + Send + Sync;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 -     pub type TypeMapInner = UnsafeAny + Send + Sync;
[INFO] [stdout] 49 +     pub type TypeMapInner = dyn UnsafeAny + Send + Sync;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub error: Box<Error + Send>,
[INFO] [stdout]    |                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 -     pub error: Box<Error + Send>,
[INFO] [stdout] 30 +     pub error: Box<dyn Error + Send>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:59:32
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 59 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 59 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:396:22
[INFO] [stdout]     |
[INFO] [stdout] 396 | impl Handler for Box<Handler> {
[INFO] [stdout]     |                      ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 396 - impl Handler for Box<Handler> {
[INFO] [stdout] 396 + impl Handler for Box<dyn Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:410:31
[INFO] [stdout]     |
[INFO] [stdout] 410 | impl BeforeMiddleware for Box<BeforeMiddleware> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 410 - impl BeforeMiddleware for Box<BeforeMiddleware> {
[INFO] [stdout] 410 + impl BeforeMiddleware for Box<dyn BeforeMiddleware> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:440:30
[INFO] [stdout]     |
[INFO] [stdout] 440 | impl AfterMiddleware for Box<AfterMiddleware> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 440 - impl AfterMiddleware for Box<AfterMiddleware> {
[INFO] [stdout] 440 + impl AfterMiddleware for Box<dyn AfterMiddleware> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:461:25
[INFO] [stdout]     |
[INFO] [stdout] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 461 -     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout] 461 +     where F: FnOnce(Box<dyn Handler>) -> Box<Handler>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:461:42
[INFO] [stdout]     |
[INFO] [stdout] 461 |     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout]     |                                          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 461 -     where F: FnOnce(Box<Handler>) -> Box<Handler>
[INFO] [stdout] 461 +     where F: FnOnce(Box<Handler>) -> Box<dyn Handler>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:197:51
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout]     |                                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 197 -     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout] 197 +     fn around(self, handler: Box<Handler>) -> Box<dyn Handler>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:197:34
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout]     |                                  ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 197 -     fn around(self, handler: Box<Handler>) -> Box<Handler>;
[INFO] [stdout] 197 +     fn around(self, handler: Box<dyn Handler>) -> Box<Handler>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:463:51
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout]     |                                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 463 -     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout] 463 +     fn around(self, handler: Box<Handler>) -> Box<dyn Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:463:34
[INFO] [stdout]     |
[INFO] [stdout] 463 |     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout]     |                                  ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 463 -     fn around(self, handler: Box<Handler>) -> Box<Handler> {
[INFO] [stdout] 463 +     fn around(self, handler: Box<dyn Handler>) -> Box<Handler> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |         self.error.description()
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:60:20
[INFO] [stdout]    |
[INFO] [stdout] 60 |         self.error.cause()
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:219:52
[INFO] [stdout]     |
[INFO] [stdout] 219 |             handler: Some(Box::new(handler) as Box<Handler>)
[INFO] [stdout]     |                                                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 219 -             handler: Some(Box::new(handler) as Box<Handler>)
[INFO] [stdout] 219 +             handler: Some(Box::new(handler) as Box<dyn Handler>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:231:51
[INFO] [stdout]     |
[INFO] [stdout] 231 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 231 -         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout] 231 +         self.befores.push(Box::new(before) as Box<dyn BeforeMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:232:49
[INFO] [stdout]     |
[INFO] [stdout] 232 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 232 -         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout] 232 +         self.afters.push(Box::new(after) as Box<dyn AfterMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:241:51
[INFO] [stdout]     |
[INFO] [stdout] 241 |         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 241 -         self.befores.push(Box::new(before) as Box<BeforeMiddleware>);
[INFO] [stdout] 241 +         self.befores.push(Box::new(before) as Box<dyn BeforeMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/mod.rs:250:49
[INFO] [stdout]     |
[INFO] [stdout] 250 |         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 250 -         self.afters.push(Box::new(after) as Box<AfterMiddleware>);
[INFO] [stdout] 250 +         self.afters.push(Box::new(after) as Box<dyn AfterMiddleware>);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/test.rs:195:37
[INFO] [stdout]     |
[INFO] [stdout] 195 |         .map(|m| Box::new(m) as Box<BeforeMiddleware>)
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 195 -         .map(|m| Box::new(m) as Box<BeforeMiddleware>)
[INFO] [stdout] 195 +         .map(|m| Box::new(m) as Box<dyn BeforeMiddleware>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/test.rs:202:37
[INFO] [stdout]     |
[INFO] [stdout] 202 |         .map(|m| Box::new(m) as Box<AfterMiddleware>)
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 202 -         .map(|m| Box::new(m) as Box<AfterMiddleware>)
[INFO] [stdout] 202 +         .map(|m| Box::new(m) as Box<dyn AfterMiddleware>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/middleware/test.rs:207:48
[INFO] [stdout]     |
[INFO] [stdout] 207 |         handler: Some(Box::new(handler) as Box<Handler>),
[INFO] [stdout]     |                                                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 207 -         handler: Some(Box::new(handler) as Box<Handler>),
[INFO] [stdout] 207 +         handler: Some(Box::new(handler) as Box<dyn Handler>),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ferrum`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name time examples/time.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=8ab445e66a46a2cf -C extra-filename=-8ab445e66a46a2cf --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern ferrum=/opt/rustwide/target/debug/deps/libferrum-86edc3780aca5860.rlib --extern ferrum_plugin=/opt/rustwide/target/debug/deps/libferrum_plugin-cb80e633393f9c8c.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-0f39203b7bbc7621.rlib --extern futures_cpupool=/opt/rustwide/target/debug/deps/libfutures_cpupool-90f13d3c261fe643.rlib --extern hyper=/opt/rustwide/target/debug/deps/libhyper-d5926195f78d4481.rlib --extern mime=/opt/rustwide/target/debug/deps/libmime-6adaefd5c465bdcc.rlib --extern mime_guess=/opt/rustwide/target/debug/deps/libmime_guess-a7e1770aa3abb538.rlib --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-0cf63326fa2cd96b.rlib --extern time=/opt/rustwide/target/debug/deps/libtime-cfedab4feb1161c9.rlib --extern unsafe_any=/opt/rustwide/target/debug/deps/libunsafe_any-a9c620ab08bf6f2d.rlib --extern url=/opt/rustwide/target/debug/deps/liburl-25de54750ac01ffc.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 `Command { std: "docker" "inspect" "d0a0e40282b4ba1a0645aa9efca562e34479c5832add35504fe9718440003e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0a0e40282b4ba1a0645aa9efca562e34479c5832add35504fe9718440003e4c", kill_on_drop: false }`
[INFO] [stdout] d0a0e40282b4ba1a0645aa9efca562e34479c5832add35504fe9718440003e4c