[INFO] fetching crate log4rs-routing-appender 0.4.0... [INFO] checking log4rs-routing-appender-0.4.0 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819 [INFO] extracting crate log4rs-routing-appender 0.4.0 into /workspace/builds/worker-13/source [INFO] validating manifest of crates.io crate log4rs-routing-appender 0.4.0 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate log4rs-routing-appender 0.4.0 [INFO] finished tweaking crates.io crate log4rs-routing-appender 0.4.0 [INFO] tweaked toml for crates.io crate log4rs-routing-appender 0.4.0 written to /workspace/builds/worker-13/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "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" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c6725d2d10b3d080bd50f60295b559330a8c9119ebad442d14d9c9878c55593f [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "c6725d2d10b3d080bd50f60295b559330a8c9119ebad442d14d9c9878c55593f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c6725d2d10b3d080bd50f60295b559330a8c9119ebad442d14d9c9878c55593f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c6725d2d10b3d080bd50f60295b559330a8c9119ebad442d14d9c9878c55593f", kill_on_drop: false }` [INFO] [stdout] c6725d2d10b3d080bd50f60295b559330a8c9119ebad442d14d9c9878c55593f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 978d4adf5320e55cbd15579f7aa21167ffc08db8a5519b769a98fe8050eda94c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "978d4adf5320e55cbd15579f7aa21167ffc08db8a5519b769a98fe8050eda94c", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking log-mdc v0.1.0 [INFO] [stderr] Checking yaml-rust v0.4.5 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Checking ordered-float v1.1.1 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking ordered-float v0.5.2 [INFO] [stderr] Checking serde-value v0.5.3 [INFO] [stderr] Checking serde_yaml v0.7.5 [INFO] [stderr] Checking log4rs v0.8.3 [INFO] [stderr] Checking log4rs-routing-appender v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/template.rs:17:57 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn new(pattern: &Value) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/template.rs:38:47 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn expand(&self) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/template.rs:143:56 [INFO] [stdout] | [INFO] [stdout] 143 | fn new(value: &Value) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/template.rs:262:43 [INFO] [stdout] | [INFO] [stdout] 262 | fn expand(&self) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/mod.rs:72:76 [INFO] [stdout] | [INFO] [stdout] 72 | fn route(&self, _: &Record, cache: &mut Cache) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/mod.rs:99:18 [INFO] [stdout] | [INFO] [stdout] 99 | type Trait = Route; [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/mod.rs:106:21 [INFO] [stdout] | [INFO] [stdout] 106 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/mod.rs:106:33 [INFO] [stdout] | [INFO] [stdout] 106 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:92:28 [INFO] [stdout] | [INFO] [stdout] 92 | F: FnOnce() -> Box, [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:120:36 [INFO] [stdout] | [INFO] [stdout] 120 | pub fn insert(self, value: Box) -> Appender { [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:132:29 [INFO] [stdout] | [INFO] [stdout] 132 | pub struct Appender(Arc>); [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:135:28 [INFO] [stdout] | [INFO] [stdout] 135 | fn appender(&self) -> &Append { [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:147:31 [INFO] [stdout] | [INFO] [stdout] 147 | ) -> Result>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:151:25 [INFO] [stdout] | [INFO] [stdout] 151 | impl Deserializable for Route { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:113:17 [INFO] [stdout] | [INFO] [stdout] 113 | router: Box, [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:126:57 [INFO] [stdout] | [INFO] [stdout] 126 | fn append(&self, record: &Record) -> Result<(), Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:159:36 [INFO] [stdout] | [INFO] [stdout] 159 | pub fn build(self, router: Box) -> RoutingAppender { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:194:18 [INFO] [stdout] | [INFO] [stdout] 194 | type Trait = Append; [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:201:21 [INFO] [stdout] | [INFO] [stdout] 201 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:201:34 [INFO] [stdout] | [INFO] [stdout] 201 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:281:28 [INFO] [stdout] | [INFO] [stdout] 281 | fn appender(&self) -> &Append; [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/template.rs:17:57 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn new(pattern: &Value) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/template.rs:38:47 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn expand(&self) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/template.rs:143:56 [INFO] [stdout] | [INFO] [stdout] 143 | fn new(value: &Value) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/template.rs:262:43 [INFO] [stdout] | [INFO] [stdout] 262 | fn expand(&self) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/mod.rs:72:76 [INFO] [stdout] | [INFO] [stdout] 72 | fn route(&self, _: &Record, cache: &mut Cache) -> Result> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/mod.rs:99:18 [INFO] [stdout] | [INFO] [stdout] 99 | type Trait = Route; [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/mod.rs:106:21 [INFO] [stdout] | [INFO] [stdout] 106 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/pattern/mod.rs:106:33 [INFO] [stdout] | [INFO] [stdout] 106 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:92:28 [INFO] [stdout] | [INFO] [stdout] 92 | F: FnOnce() -> Box, [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:120:36 [INFO] [stdout] | [INFO] [stdout] 120 | pub fn insert(self, value: Box) -> Appender { [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:132:29 [INFO] [stdout] | [INFO] [stdout] 132 | pub struct Appender(Arc>); [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:135:28 [INFO] [stdout] | [INFO] [stdout] 135 | fn appender(&self) -> &Append { [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:147:31 [INFO] [stdout] | [INFO] [stdout] 147 | ) -> Result>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/route/mod.rs:151:25 [INFO] [stdout] | [INFO] [stdout] 151 | impl Deserializable for Route { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:113:17 [INFO] [stdout] | [INFO] [stdout] 113 | router: Box, [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:126:57 [INFO] [stdout] | [INFO] [stdout] 126 | fn append(&self, record: &Record) -> Result<(), Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:159:36 [INFO] [stdout] | [INFO] [stdout] 159 | pub fn build(self, router: Box) -> RoutingAppender { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Route` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:194:18 [INFO] [stdout] | [INFO] [stdout] 194 | type Trait = Append; [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:201:21 [INFO] [stdout] | [INFO] [stdout] 201 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:201:34 [INFO] [stdout] | [INFO] [stdout] 201 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:281:28 [INFO] [stdout] | [INFO] [stdout] 281 | fn appender(&self) -> &Append; [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/pattern.rs:29:52 [INFO] [stdout] | [INFO] [stdout] 29 | fn append(&self, _: &Record) -> Result<(), Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/pattern.rs:41:18 [INFO] [stdout] | [INFO] [stdout] 41 | type Trait = Append; [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/pattern.rs:47:21 [INFO] [stdout] | [INFO] [stdout] 47 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Append` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/pattern.rs:47:34 [INFO] [stdout] | [INFO] [stdout] 47 | ) -> Result, Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Sync + Send` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 13.01s [INFO] running `Command { std: "docker" "inspect" "978d4adf5320e55cbd15579f7aa21167ffc08db8a5519b769a98fe8050eda94c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "978d4adf5320e55cbd15579f7aa21167ffc08db8a5519b769a98fe8050eda94c", kill_on_drop: false }` [INFO] [stdout] 978d4adf5320e55cbd15579f7aa21167ffc08db8a5519b769a98fe8050eda94c