[INFO] fetching crate nickel 0.11.0... [INFO] checking nickel-0.11.0 against beta for pr-78714 [INFO] extracting crate nickel 0.11.0 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate nickel 0.11.0 on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate nickel 0.11.0 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate nickel 0.11.0 [INFO] tweaked toml for crates.io crate nickel 0.11.0 written to /workspace/builds/worker-0/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 45f44e7b90676d4d5fbd3b2186c790ca8d8ee92d50b18063271fc40612ee1f71 [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" "45f44e7b90676d4d5fbd3b2186c790ca8d8ee92d50b18063271fc40612ee1f71", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "45f44e7b90676d4d5fbd3b2186c790ca8d8ee92d50b18063271fc40612ee1f71", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "45f44e7b90676d4d5fbd3b2186c790ca8d8ee92d50b18063271fc40612ee1f71", kill_on_drop: false }` [INFO] [stdout] 45f44e7b90676d4d5fbd3b2186c790ca8d8ee92d50b18063271fc40612ee1f71 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] df444b7ce5df78039ec09a440cd1bfb893d735e1822237481d4f3837cdbf6484 [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" "df444b7ce5df78039ec09a440cd1bfb893d735e1822237481d4f3837cdbf6484", kill_on_drop: false }` [INFO] [stderr] Checking mustache v0.9.0 [INFO] [stderr] Checking nickel v0.11.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/server.rs:51:26 [INFO] [stdout] | [INFO] [stdout] 51 | let mut server = try!(HyperServer::http(addr)); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/server.rs:72:26 [INFO] [stdout] | [INFO] [stdout] 72 | let mut server = try!(HyperServer::https(addr, ssl)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/nickel.rs:240:13 [INFO] [stdout] | [INFO] [stdout] 240 | try!(server.serve("localhost:0", [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/nickel.rs:244:13 [INFO] [stdout] | [INFO] [stdout] 244 | try!(server.serve(addr, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/nickel.rs:314:13 [INFO] [stdout] | [INFO] [stdout] 314 | try!(server.serve_https("localhost:0", [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/nickel.rs:319:13 [INFO] [stdout] | [INFO] [stdout] 319 | try!(server.serve_https(addr, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/response.rs:136:26 [INFO] [stdout] | [INFO] [stdout] 136 | let mut stream = try!(self.start()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/responder.rs:72:34 [INFO] [stdout] | [INFO] [stdout] 72 | let mut stream = try!(res.start()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/responder.rs:114:34 [INFO] [stdout] | [INFO] [stdout] 114 | let mut stream = try!(res.start()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/body_parser.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | try!(req.origin.read_to_string(&mut buf)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/body_parser.rs:46:28 [INFO] [stdout] | [INFO] [stdout] 46 | let body = try!(req.get_ref::()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/router/router.rs:15:22 [INFO] [stdout] | [INFO] [stdout] 15 | pub handler: Box + Send + Sync + 'static>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware + Send + Sync + 'static` [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/nickel.rs:228:87 [INFO] [stdout] | [INFO] [stdout] 228 | pub fn listen(mut self, addr: T) -> Result> { [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn StdError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/nickel.rs:300:88 [INFO] [stdout] | [INFO] [stdout] 300 | pub fn listen_https(mut self, addr: T, ssl: S) -> Result> [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn StdError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/response.rs:30:22 [INFO] [stdout] | [INFO] [stdout] 30 | on_send: Vec)>> [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Response<'a, D, Fresh>)` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/middleware.rs:42:23 [INFO] [stdout] | [INFO] [stdout] 42 | handlers: Vec + Send + Sync>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware + Send + Sync` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/middleware.rs:43:29 [INFO] [stdout] | [INFO] [stdout] 43 | error_handlers: Vec + Send + Sync>> [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorHandler + Send + Sync` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/body_parser.rs:115:32 [INFO] [stdout] | [INFO] [stdout] 115 | fn cause(&self) -> Option<&StdError> { [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn StdError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/nickel_error.rs:73:27 [INFO] [stdout] | [INFO] [stdout] 73 | where T: Into> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/server.rs:51:26 [INFO] [stdout] | [INFO] [stdout] 51 | let mut server = try!(HyperServer::http(addr)); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/server.rs:72:26 [INFO] [stdout] | [INFO] [stdout] 72 | let mut server = try!(HyperServer::https(addr, ssl)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/nickel.rs:240:13 [INFO] [stdout] | [INFO] [stdout] 240 | try!(server.serve("localhost:0", [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/nickel.rs:244:13 [INFO] [stdout] | [INFO] [stdout] 244 | try!(server.serve(addr, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/nickel.rs:314:13 [INFO] [stdout] | [INFO] [stdout] 314 | try!(server.serve_https("localhost:0", [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/nickel.rs:319:13 [INFO] [stdout] | [INFO] [stdout] 319 | try!(server.serve_https(addr, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/response.rs:136:26 [INFO] [stdout] | [INFO] [stdout] 136 | let mut stream = try!(self.start()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/responder.rs:72:34 [INFO] [stdout] | [INFO] [stdout] 72 | let mut stream = try!(res.start()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/responder.rs:114:34 [INFO] [stdout] | [INFO] [stdout] 114 | let mut stream = try!(res.start()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/body_parser.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | try!(req.origin.read_to_string(&mut buf)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/body_parser.rs:46:28 [INFO] [stdout] | [INFO] [stdout] 46 | let body = try!(req.get_ref::()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/router/router.rs:15:22 [INFO] [stdout] | [INFO] [stdout] 15 | pub handler: Box + Send + Sync + 'static>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware + Send + Sync + 'static` [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/nickel.rs:228:87 [INFO] [stdout] | [INFO] [stdout] 228 | pub fn listen(mut self, addr: T) -> Result> { [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn StdError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/nickel.rs:300:88 [INFO] [stdout] | [INFO] [stdout] 300 | pub fn listen_https(mut self, addr: T, ssl: S) -> Result> [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn StdError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/response.rs:30:22 [INFO] [stdout] | [INFO] [stdout] 30 | on_send: Vec)>> [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Response<'a, D, Fresh>)` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/middleware.rs:42:23 [INFO] [stdout] | [INFO] [stdout] 42 | handlers: Vec + Send + Sync>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware + Send + Sync` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/middleware.rs:43:29 [INFO] [stdout] | [INFO] [stdout] 43 | error_handlers: Vec + Send + Sync>> [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorHandler + Send + Sync` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/body_parser.rs:115:32 [INFO] [stdout] | [INFO] [stdout] 115 | fn cause(&self) -> Option<&StdError> { [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn StdError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/nickel_error.rs:73:27 [INFO] [stdout] | [INFO] [stdout] 73 | where T: Into> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static` [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/body_parser.rs:110:43 [INFO] [stdout] | [INFO] [stdout] 110 | BodyError::Io(ref err) => err.description(), [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/body_parser.rs:125:32 [INFO] [stdout] | [INFO] [stdout] 125 | write!(out, "{}", self.description()) [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/nickel_error.rs:76:35 [INFO] [stdout] | [INFO] [stdout] 76 | NickelError::new(res, err.description().to_string(), errorcode) [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/body_parser.rs:110:43 [INFO] [stdout] | [INFO] [stdout] 110 | BodyError::Io(ref err) => err.description(), [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/body_parser.rs:125:32 [INFO] [stdout] | [INFO] [stdout] 125 | write!(out, "{}", self.description()) [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/nickel_error.rs:76:35 [INFO] [stdout] | [INFO] [stdout] 76 | NickelError::new(res, err.description().to_string(), errorcode) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> examples/https.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #[macro_use] extern crate nickel; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> tests/example_tests.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #[macro_use] extern crate serde_derive; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/examples/../../examples/integration_testing.rs:38:19 [INFO] [stdout] | [INFO] [stdout] 38 | database: Box [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn Database` [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/examples/../../examples/integration_testing.rs:68:79 [INFO] [stdout] | [INFO] [stdout] 68 | fn start_server(address: &str, database: D) -> Result> [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn StdError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> examples/integration_testing.rs:38:19 [INFO] [stdout] | [INFO] [stdout] 38 | database: Box [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn Database` [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] --> examples/integration_testing.rs:68:79 [INFO] [stdout] | [INFO] [stdout] 68 | fn start_server(address: &str, database: D) -> Result> [INFO] [stdout] | ^^^^^^^^ help: use `dyn`: `dyn StdError` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.44s [INFO] running `Command { std: "docker" "inspect" "df444b7ce5df78039ec09a440cd1bfb893d735e1822237481d4f3837cdbf6484", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "df444b7ce5df78039ec09a440cd1bfb893d735e1822237481d4f3837cdbf6484", kill_on_drop: false }` [INFO] [stdout] df444b7ce5df78039ec09a440cd1bfb893d735e1822237481d4f3837cdbf6484