[INFO] fetching crate nickel 0.11.0...
[INFO] testing nickel-0.11.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate nickel 0.11.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate nickel 0.11.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3327f2a256c22d3e069adcbda4aededc97f63321558931eea56682b927126a6b
[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" "3327f2a256c22d3e069adcbda4aededc97f63321558931eea56682b927126a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3327f2a256c22d3e069adcbda4aededc97f63321558931eea56682b927126a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3327f2a256c22d3e069adcbda4aededc97f63321558931eea56682b927126a6b", kill_on_drop: false }`
[INFO] [stdout] 3327f2a256c22d3e069adcbda4aededc97f63321558931eea56682b927126a6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f00063398e9f1e7aa3887b5e77f66d7a22af844ea16c24faaea495e26ce359e8
[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" "f00063398e9f1e7aa3887b5e77f66d7a22af844ea16c24faaea495e26ce359e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling groupable v0.2.0
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling 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]    = note: `#[warn(anonymous_parameters)]` on by default
[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:39:73
[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: 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]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<D> + Send + Sync + 'static`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]     |                                                                                       ^^^^^^^^ help: use `dyn`: `dyn StdError`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]     |                                                                                        ^^^^^^^^ help: use `dyn`: `dyn StdError`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Response<'a, D, Fresh>)`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<D> + Send + Sync`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorHandler<D> + Send + Sync`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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/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]     = 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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                           ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.22s
[INFO] running `Command { std: "docker" "inspect" "f00063398e9f1e7aa3887b5e77f66d7a22af844ea16c24faaea495e26ce359e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f00063398e9f1e7aa3887b5e77f66d7a22af844ea16c24faaea495e26ce359e8", kill_on_drop: false }`
[INFO] [stdout] f00063398e9f1e7aa3887b5e77f66d7a22af844ea16c24faaea495e26ce359e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64fbb187dae48fe78cdbe390ad5d0f99b041cc2c590e4e6aa6bed8eb9ae08ec8
[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" "64fbb187dae48fe78cdbe390ad5d0f99b041cc2c590e4e6aa6bed8eb9ae08ec8", kill_on_drop: false }`
[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]    = note: `#[warn(anonymous_parameters)]` on by default
[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:39:73
[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: 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]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<D> + Send + Sync + 'static`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]     |                                                                                       ^^^^^^^^ help: use `dyn`: `dyn StdError`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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] [stderr]    Compiling nickel v0.11.0 (/opt/rustwide/workdir)
[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: 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]     |                                                                                        ^^^^^^^^ help: use `dyn`: `dyn StdError`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Response<'a, D, Fresh>)`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<D> + Send + Sync`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorHandler<D> + Send + Sync`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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/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]     = 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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                           ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 28 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<Database>
[INFO] [stdout]    |                   ^^^^^^^^ help: use `dyn`: `dyn Database`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                                                               ^^^^^^^^ help: use `dyn`: `dyn StdError`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                   ^^^^^^^^ help: use `dyn`: `dyn Database`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                                                               ^^^^^^^^ help: use `dyn`: `dyn StdError`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = note: `#[warn(anonymous_parameters)]` on by default
[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:39:73
[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: 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]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<D> + Send + Sync + 'static`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]     |                                                                                       ^^^^^^^^ help: use `dyn`: `dyn StdError`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]     |                                                                                        ^^^^^^^^ help: use `dyn`: `dyn StdError`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Response<'a, D, Fresh>)`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Middleware<D> + Send + Sync`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ErrorHandler<D> + Send + Sync`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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/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]     = 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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                           ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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] [stderr] error: could not compile `nickel`; 28 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nickel src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test -C metadata=f596ee57d1afe0f3 -C extra-filename=-f596ee57d1afe0f3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern groupable=/opt/rustwide/target/debug/deps/libgroupable-5b9aa83c3f9d6d47.rlib --extern hyper=/opt/rustwide/target/debug/deps/libhyper-52bd2f5ba137d45c.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rlib --extern log=/opt/rustwide/target/debug/deps/liblog-8baeb7cea712979c.rlib --extern modifier=/opt/rustwide/target/debug/deps/libmodifier-afc384a5eba98018.rlib --extern mustache=/opt/rustwide/target/debug/deps/libmustache-a52aa3d6834e955a.rlib --extern plugin=/opt/rustwide/target/debug/deps/libplugin-9710501802cea3f7.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-27bd9e77ed307a48.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-e1e7584dcba0a5cc.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-8fe885f1d4439ddc.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-3de8b5c3752d5467.rlib --extern time=/opt/rustwide/target/debug/deps/libtime-b622af9a9e06a5dc.rlib --extern typemap=/opt/rustwide/target/debug/deps/libtypemap-4551cc97c9215e3e.rlib --extern url=/opt/rustwide/target/debug/deps/liburl-2e78d1b0e2702257.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" "64fbb187dae48fe78cdbe390ad5d0f99b041cc2c590e4e6aa6bed8eb9ae08ec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64fbb187dae48fe78cdbe390ad5d0f99b041cc2c590e4e6aa6bed8eb9ae08ec8", kill_on_drop: false }`
[INFO] [stdout] 64fbb187dae48fe78cdbe390ad5d0f99b041cc2c590e4e6aa6bed8eb9ae08ec8