[INFO] fetching crate nickel 0.11.0...
[INFO] checking nickel-0.11.0 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate nickel 0.11.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate nickel 0.11.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded groupable v0.2.0
[INFO] [stderr]   Downloaded mustache v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e8858e61ac5ed572998ef11bcdff53e4bea745b16e2f4948313c98e15e7502c
[INFO] running `Command { std: "docker" "start" "-a" "9e8858e61ac5ed572998ef11bcdff53e4bea745b16e2f4948313c98e15e7502c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e8858e61ac5ed572998ef11bcdff53e4bea745b16e2f4948313c98e15e7502c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e8858e61ac5ed572998ef11bcdff53e4bea745b16e2f4948313c98e15e7502c", kill_on_drop: false }`
[INFO] [stdout] 9e8858e61ac5ed572998ef11bcdff53e4bea745b16e2f4948313c98e15e7502c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bb1f1f56b798f51973a08d09d613d7a11967b5bfb208155fec47d1c9eea1f22
[INFO] running `Command { std: "docker" "start" "-a" "0bb1f1f56b798f51973a08d09d613d7a11967b5bfb208155fec47d1c9eea1f22", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking groupable v0.2.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking nickel v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/router/http_router.rs:39:65
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn add_route<M: Into<Matcher>, H: Middleware<D>>(&mut self, Method, M, H) -> &mut Self;
[INFO] [stdout]    |                                                                 ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Method`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/router/http_router.rs:39:73
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn add_route<M: Into<Matcher>, H: Middleware<D>>(&mut self, Method, M, H) -> &mut Self;
[INFO] [stdout]    |                                                                         ^ help: try naming the parameter or explicitly ignoring it: `_: M`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/router/http_router.rs:39:76
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn add_route<M: Into<Matcher>, H: Middleware<D>>(&mut self, Method, M, H) -> &mut Self;
[INFO] [stdout]    |                                                                            ^ help: try naming the parameter or explicitly ignoring it: `_: H`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[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: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/middleware.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn handle_error(&self, &mut NickelError<D>, &mut Request<D>) -> Action;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut NickelError<D>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/middleware.rs:32:49
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn handle_error(&self, &mut NickelError<D>, &mut Request<D>) -> Action;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Request<D>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/responder.rs:25:26
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn respond<'a>(self, Response<'a, D>) -> MiddlewareResult<'a, D>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Response<'a, D>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[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::<BodyReader>());
[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<Middleware<D> + Send + Sync + 'static>,
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub handler: Box<dyn Middleware<D> + Send + Sync + 'static>,
[INFO] [stdout]    |                      +++
[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<Box<FnMut(&mut Response<'a, D, Fresh>)>>
[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 |     on_send: Vec<Box<dyn FnMut(&mut Response<'a, D, Fresh>)>>
[INFO] [stdout]    |                      +++
[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<Box<Middleware<D> + 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] 42 |     handlers: Vec<Box<dyn Middleware<D> + Send + Sync>>,
[INFO] [stdout]    |                       +++
[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<Box<ErrorHandler<D> + 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] 43 |     error_handlers: Vec<Box<dyn ErrorHandler<D> + Send + Sync>>
[INFO] [stdout]    |                             +++
[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<T: ToSocketAddrs>(mut self, addr: T) -> Result<ListeningServer, Box<StdError>> {
[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] 228 |     pub fn listen<T: ToSocketAddrs>(mut self, addr: T) -> Result<ListeningServer, Box<dyn StdError>> {
[INFO] [stdout]     |                                                                                       +++
[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<T,S>(mut self, addr: T, ssl: S) -> Result<ListeningServer, Box<StdError>>
[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] 300 |     pub fn listen_https<T,S>(mut self, addr: T, ssl: S) -> Result<ListeningServer, Box<dyn StdError>>
[INFO] [stdout]     |                                                                                        +++
[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]     |                                ^^^^^^^^
[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] 115 |     fn cause(&self) -> Option<&dyn StdError> {
[INFO] [stdout]     |                                +++
[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<Box<Error + 'static>> {
[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] 73 |         where T: Into<Box<dyn Error + 'static>> {
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `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 method `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 method `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: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.196
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/integration_testing.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 |     database: Box<Database>
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     database: Box<dyn Database>
[INFO] [stdout]    |                   +++
[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<D>(address: &str, database: D) -> Result<ListeningServer, Box<StdError>>
[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] 68 | fn start_server<D>(address: &str, database: D) -> Result<ListeningServer, Box<dyn StdError>>
[INFO] [stdout]    |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/router/http_router.rs:39:65
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn add_route<M: Into<Matcher>, H: Middleware<D>>(&mut self, Method, M, H) -> &mut Self;
[INFO] [stdout]    |                                                                 ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Method`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/router/http_router.rs:39:73
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn add_route<M: Into<Matcher>, H: Middleware<D>>(&mut self, Method, M, H) -> &mut Self;
[INFO] [stdout]    |                                                                         ^ help: try naming the parameter or explicitly ignoring it: `_: M`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/router/http_router.rs:39:76
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn add_route<M: Into<Matcher>, H: Middleware<D>>(&mut self, Method, M, H) -> &mut Self;
[INFO] [stdout]    |                                                                            ^ help: try naming the parameter or explicitly ignoring it: `_: H`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[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: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/middleware.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn handle_error(&self, &mut NickelError<D>, &mut Request<D>) -> Action;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut NickelError<D>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/middleware.rs:32:49
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn handle_error(&self, &mut NickelError<D>, &mut Request<D>) -> Action;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Request<D>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/responder.rs:25:26
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn respond<'a>(self, Response<'a, D>) -> MiddlewareResult<'a, D>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Response<'a, D>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[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::<BodyReader>());
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[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<Middleware<D> + Send + Sync + 'static>,
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub handler: Box<dyn Middleware<D> + Send + Sync + 'static>,
[INFO] [stdout]    |                      +++
[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<Box<FnMut(&mut Response<'a, D, Fresh>)>>
[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 |     on_send: Vec<Box<dyn FnMut(&mut Response<'a, D, Fresh>)>>
[INFO] [stdout]    |                      +++
[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<Box<Middleware<D> + 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] 42 |     handlers: Vec<Box<dyn Middleware<D> + Send + Sync>>,
[INFO] [stdout]    |                       +++
[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<Box<ErrorHandler<D> + 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] 43 |     error_handlers: Vec<Box<dyn ErrorHandler<D> + Send + Sync>>
[INFO] [stdout]    |                             +++
[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<T: ToSocketAddrs>(mut self, addr: T) -> Result<ListeningServer, Box<StdError>> {
[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] 228 |     pub fn listen<T: ToSocketAddrs>(mut self, addr: T) -> Result<ListeningServer, Box<dyn StdError>> {
[INFO] [stdout]     |                                                                                       +++
[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<T,S>(mut self, addr: T, ssl: S) -> Result<ListeningServer, Box<StdError>>
[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] 300 |     pub fn listen_https<T,S>(mut self, addr: T, ssl: S) -> Result<ListeningServer, Box<dyn StdError>>
[INFO] [stdout]     |                                                                                        +++
[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]     |                                ^^^^^^^^
[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] 115 |     fn cause(&self) -> Option<&dyn StdError> {
[INFO] [stdout]     |                                +++
[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<Box<Error + 'static>> {
[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] 73 |         where T: Into<Box<dyn Error + 'static>> {
[INFO] [stdout]    |                           +++
[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<Database>
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |     database: Box<dyn Database>
[INFO] [stdout]    |                   +++
[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<D>(address: &str, database: D) -> Result<ListeningServer, Box<StdError>>
[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] 68 | fn start_server<D>(address: &str, database: D) -> Result<ListeningServer, Box<dyn StdError>>
[INFO] [stdout]    |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `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 method `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 method `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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.80s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "0bb1f1f56b798f51973a08d09d613d7a11967b5bfb208155fec47d1c9eea1f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bb1f1f56b798f51973a08d09d613d7a11967b5bfb208155fec47d1c9eea1f22", kill_on_drop: false }`
[INFO] [stdout] 0bb1f1f56b798f51973a08d09d613d7a11967b5bfb208155fec47d1c9eea1f22
