[INFO] crate slog-html 0.1.3 is already in cache
[INFO] testing slog-html-0.1.3 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate slog-html 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate slog-html 0.1.3 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog-html 0.1.3
[INFO] finished tweaking crates.io crate slog-html 0.1.3
[INFO] tweaked toml for crates.io crate slog-html 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9eed640081b0ad59f885534c2f22874367011302095350f980973b8bb8c5c1a6
[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" "9eed640081b0ad59f885534c2f22874367011302095350f980973b8bb8c5c1a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9eed640081b0ad59f885534c2f22874367011302095350f980973b8bb8c5c1a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eed640081b0ad59f885534c2f22874367011302095350f980973b8bb8c5c1a6", kill_on_drop: false }`
[INFO] [stdout] 9eed640081b0ad59f885534c2f22874367011302095350f980973b8bb8c5c1a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d0059ff710c15c917982d15f6e8c0b088f37fff84319cc5eaf4494389efb11a
[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" "2d0059ff710c15c917982d15f6e8c0b088f37fff84319cc5eaf4494389efb11a", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v1.7.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling slog-extra v0.1.2
[INFO] [stderr]    Compiling slog-stream v1.2.1
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling slog-html v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         try!(write!(io, "<span style=\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             try!(write!(io, "color:#{};", color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             try!(write!(io, "font-style:italic;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |             try!(write!(io, "{}", custom));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(write!(io, "\">"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         try!(write!(io, "</span>"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         try!(write!(io, "<span style=\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |             try!(write!(io, "color:#{};", color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write!(io, "color:#{};", self.level_color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             try!(write!(io, "font-style:italic;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             try!(write!(io, "{}", custom));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(write!(io, "\">"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         try!(write!(io, "</span>"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:172:38
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut record_value_stack = try!(self.record_value_stack(record, logger_values));
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:183:17
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 try!(self.print_indent(io, i));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |                 try!(io.write_all(&record_value_stack[i]));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 try!(io.write_all(b"</pre>\n"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |         try!(self.print_indent(io, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:206:13
[INFO] [stdout]     |
[INFO] [stdout] 206 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:230:21
[INFO] [stdout]     |
[INFO] [stdout] 230 |                     try!(serializer.print_comma());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:247:29
[INFO] [stdout]     |
[INFO] [stdout] 247 |             let mut value = try!(self.record_value_stack(record, parent));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 256 |             try!(write!(io, "  "));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:84:1
[INFO] [stdout]    |
[INFO] [stdout] 84 | #[macro_use]
[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]   --> src/decorator.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn fmt(io: &mut io::Write,
[INFO] [stdout]    |                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stdout]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:70:27
[INFO] [stdout]    |
[INFO] [stdout] 70 |                  io: &mut io::Write,
[INFO] [stdout]    |                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:71:30
[INFO] [stdout]    |
[INFO] [stdout] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:95:25
[INFO] [stdout]    |
[INFO] [stdout] 95 |                io: &mut io::Write,
[INFO] [stdout]    |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:96:20
[INFO] [stdout]    |
[INFO] [stdout] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:96:28
[INFO] [stdout]    |
[INFO] [stdout] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:102:25
[INFO] [stdout]     |
[INFO] [stdout] 102 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:103:20
[INFO] [stdout]     |
[INFO] [stdout] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:103:28
[INFO] [stdout]     |
[INFO] [stdout] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:109:25
[INFO] [stdout]     |
[INFO] [stdout] 109 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:110:28
[INFO] [stdout]     |
[INFO] [stdout] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:117:28
[INFO] [stdout]     |
[INFO] [stdout] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:123:25
[INFO] [stdout]     |
[INFO] [stdout] 123 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:124:20
[INFO] [stdout]     |
[INFO] [stdout] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:124:28
[INFO] [stdout]     |
[INFO] [stdout] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:20:68
[INFO] [stdout]    |
[INFO] [stdout] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stdout]    |                                                                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:135:29
[INFO] [stdout]     |
[INFO] [stdout] 135 |                    io: &mut io::Write,
[INFO] [stdout]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:166:32
[INFO] [stdout]     |
[INFO] [stdout] 166 |                       io: &mut io::Write,
[INFO] [stdout]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:254:37
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn print_indent(&self, io: &mut io::Write, indent: usize) -> io::Result<()> {
[INFO] [stdout]     |                                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:264:24
[INFO] [stdout]     |
[INFO] [stdout] 264 |               io: &mut io::Write,
[INFO] [stdout]     |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:276:24
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()> + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:276:32
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stdout]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:283:33
[INFO] [stdout]     |
[INFO] [stdout] 283 | pub fn timestamp_local(io: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:290:31
[INFO] [stdout]     |
[INFO] [stdout] 290 | pub fn timestamp_utc(io: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:381:26
[INFO] [stdout]     |
[INFO] [stdout] 381 |         where F: Fn(&mut io::Write) -> io::Result<()> + 'static + Send + Sync
[INFO] [stdout]     |                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
[INFO] [stdout]    --> src/lib.rs:246:54
[INFO] [stdout]     |
[INFO] [stdout] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
[INFO] [stdout]     |                                                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let (mut io, _) = serializer.finish();
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:209:14
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let (mut io, _) = serializer.finish();
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 186 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.26s
[INFO] running `Command { std: "docker" "inspect" "2d0059ff710c15c917982d15f6e8c0b088f37fff84319cc5eaf4494389efb11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d0059ff710c15c917982d15f6e8c0b088f37fff84319cc5eaf4494389efb11a", kill_on_drop: false }`
[INFO] [stdout] 2d0059ff710c15c917982d15f6e8c0b088f37fff84319cc5eaf4494389efb11a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6da2a8dd06935de8a76a0af90164db55a2f8df71f500819fffea45f5080b230
[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" "b6da2a8dd06935de8a76a0af90164db55a2f8df71f500819fffea45f5080b230", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling slog-html v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         try!(write!(io, "<span style=\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             try!(write!(io, "color:#{};", color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             try!(write!(io, "font-style:italic;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |             try!(write!(io, "{}", custom));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(write!(io, "\">"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         try!(write!(io, "</span>"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         try!(write!(io, "<span style=\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |             try!(write!(io, "color:#{};", color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write!(io, "color:#{};", self.level_color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             try!(write!(io, "font-style:italic;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             try!(write!(io, "{}", custom));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(write!(io, "\">"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         try!(write!(io, "</span>"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:172:38
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut record_value_stack = try!(self.record_value_stack(record, logger_values));
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:183:17
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 try!(self.print_indent(io, i));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |                 try!(io.write_all(&record_value_stack[i]));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 try!(io.write_all(b"</pre>\n"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |         try!(self.print_indent(io, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:206:13
[INFO] [stdout]     |
[INFO] [stdout] 206 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:230:21
[INFO] [stdout]     |
[INFO] [stdout] 230 |                     try!(serializer.print_comma());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:247:29
[INFO] [stdout]     |
[INFO] [stdout] 247 |             let mut value = try!(self.record_value_stack(record, parent));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 256 |             try!(write!(io, "  "));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:84:1
[INFO] [stdout]    |
[INFO] [stdout] 84 | #[macro_use]
[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]   --> src/decorator.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn fmt(io: &mut io::Write,
[INFO] [stdout]    |                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stdout]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:70:27
[INFO] [stdout]    |
[INFO] [stdout] 70 |                  io: &mut io::Write,
[INFO] [stdout]    |                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:71:30
[INFO] [stdout]    |
[INFO] [stdout] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:95:25
[INFO] [stdout]    |
[INFO] [stdout] 95 |                io: &mut io::Write,
[INFO] [stdout]    |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:96:20
[INFO] [stdout]    |
[INFO] [stdout] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:96:28
[INFO] [stdout]    |
[INFO] [stdout] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:102:25
[INFO] [stdout]     |
[INFO] [stdout] 102 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:103:20
[INFO] [stdout]     |
[INFO] [stdout] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:103:28
[INFO] [stdout]     |
[INFO] [stdout] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:109:25
[INFO] [stdout]     |
[INFO] [stdout] 109 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:110:28
[INFO] [stdout]     |
[INFO] [stdout] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:117:28
[INFO] [stdout]     |
[INFO] [stdout] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:123:25
[INFO] [stdout]     |
[INFO] [stdout] 123 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:124:20
[INFO] [stdout]     |
[INFO] [stdout] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:124:28
[INFO] [stdout]     |
[INFO] [stdout] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:20:68
[INFO] [stdout]    |
[INFO] [stdout] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stdout]    |                                                                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:135:29
[INFO] [stdout]     |
[INFO] [stdout] 135 |                    io: &mut io::Write,
[INFO] [stdout]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:166:32
[INFO] [stdout]     |
[INFO] [stdout] 166 |                       io: &mut io::Write,
[INFO] [stdout]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:254:37
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn print_indent(&self, io: &mut io::Write, indent: usize) -> io::Result<()> {
[INFO] [stdout]     |                                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:264:24
[INFO] [stdout]     |
[INFO] [stdout] 264 |               io: &mut io::Write,
[INFO] [stdout]     |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:276:24
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()> + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:276:32
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stdout]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:283:33
[INFO] [stdout]     |
[INFO] [stdout] 283 | pub fn timestamp_local(io: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:290:31
[INFO] [stdout]     |
[INFO] [stdout] 290 | pub fn timestamp_utc(io: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:381:26
[INFO] [stdout]     |
[INFO] [stdout] 381 |         where F: Fn(&mut io::Write) -> io::Result<()> + 'static + Send + Sync
[INFO] [stdout]     |                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
[INFO] [stdout]    --> src/lib.rs:246:54
[INFO] [stdout]     |
[INFO] [stdout] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
[INFO] [stdout]     |                                                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let (mut io, _) = serializer.finish();
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:209:14
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let (mut io, _) = serializer.finish();
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 186 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         try!(write!(io, "<span style=\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             try!(write!(io, "color:#{};", color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             try!(write!(io, "font-style:italic;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |             try!(write!(io, "{}", custom));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(write!(io, "\">"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         try!(write!(io, "</span>"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         try!(write!(io, "<span style=\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |             try!(write!(io, "color:#{};", color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |             try!(write!(io, "color:#{};", self.level_color));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             try!(write!(io, "font-style:italic;"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             try!(write!(io, "{}", custom));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(write!(io, "\">"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         try!(f(io));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         try!(write!(io, "</span>"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:172:38
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut record_value_stack = try!(self.record_value_stack(record, logger_values));
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:183:17
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 try!(self.print_indent(io, i));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:185:17
[INFO] [stdout]     |
[INFO] [stdout] 185 |                 try!(io.write_all(&record_value_stack[i]));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 try!(io.write_all(b"</pre>\n"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |         try!(self.print_indent(io, indent));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:200:9
[INFO] [stdout]     |
[INFO] [stdout] 200 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             try!(serializer.print_comma());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:206:13
[INFO] [stdout]     |
[INFO] [stdout] 206 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:230:21
[INFO] [stdout]     |
[INFO] [stdout] 230 |                     try!(serializer.print_comma());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 try!(v.serialize(record, k, &mut serializer));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:247:29
[INFO] [stdout]     |
[INFO] [stdout] 247 |             let mut value = try!(self.record_value_stack(record, parent));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 256 |             try!(write!(io, "  "));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:84:1
[INFO] [stdout]    |
[INFO] [stdout] 84 | #[macro_use]
[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]   --> src/decorator.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn fmt(io: &mut io::Write,
[INFO] [stdout]    |                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stdout]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:70:27
[INFO] [stdout]    |
[INFO] [stdout] 70 |                  io: &mut io::Write,
[INFO] [stdout]    |                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:71:30
[INFO] [stdout]    |
[INFO] [stdout] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:95:25
[INFO] [stdout]    |
[INFO] [stdout] 95 |                io: &mut io::Write,
[INFO] [stdout]    |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:96:20
[INFO] [stdout]    |
[INFO] [stdout] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decorator.rs:96:28
[INFO] [stdout]    |
[INFO] [stdout] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:102:25
[INFO] [stdout]     |
[INFO] [stdout] 102 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:103:20
[INFO] [stdout]     |
[INFO] [stdout] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:103:28
[INFO] [stdout]     |
[INFO] [stdout] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:109:25
[INFO] [stdout]     |
[INFO] [stdout] 109 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:110:28
[INFO] [stdout]     |
[INFO] [stdout] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:117:28
[INFO] [stdout]     |
[INFO] [stdout] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:123:25
[INFO] [stdout]     |
[INFO] [stdout] 123 |                io: &mut io::Write,
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:124:20
[INFO] [stdout]     |
[INFO] [stdout] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decorator.rs:124:28
[INFO] [stdout]     |
[INFO] [stdout] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stdout]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:20:68
[INFO] [stdout]    |
[INFO] [stdout] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stdout]    |                                                                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         ---------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:135:29
[INFO] [stdout]     |
[INFO] [stdout] 135 |                    io: &mut io::Write,
[INFO] [stdout]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:166:32
[INFO] [stdout]     |
[INFO] [stdout] 166 |                       io: &mut io::Write,
[INFO] [stdout]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:254:37
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn print_indent(&self, io: &mut io::Write, indent: usize) -> io::Result<()> {
[INFO] [stdout]     |                                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:264:24
[INFO] [stdout]     |
[INFO] [stdout] 264 |               io: &mut io::Write,
[INFO] [stdout]     |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:276:24
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()> + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:276:32
[INFO] [stdout]     |
[INFO] [stdout] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stdout]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:283:33
[INFO] [stdout]     |
[INFO] [stdout] 283 | pub fn timestamp_local(io: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:290:31
[INFO] [stdout]     |
[INFO] [stdout] 290 | pub fn timestamp_utc(io: &mut io::Write) -> io::Result<()> {
[INFO] [stdout]     |                               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:381:26
[INFO] [stdout]     |
[INFO] [stdout] 381 |         where F: Fn(&mut io::Write) -> io::Result<()> + 'static + Send + Sync
[INFO] [stdout]     |                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
[INFO] [stdout]    --> src/lib.rs:246:54
[INFO] [stdout]     |
[INFO] [stdout] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
[INFO] [stdout]     |                                                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:160:14
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let (mut io, _) = serializer.finish();
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:209:14
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let (mut io, _) = serializer.finish();
[INFO] [stdout]     |              ----^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 186 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "b6da2a8dd06935de8a76a0af90164db55a2f8df71f500819fffea45f5080b230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6da2a8dd06935de8a76a0af90164db55a2f8df71f500819fffea45f5080b230", kill_on_drop: false }`
[INFO] [stdout] b6da2a8dd06935de8a76a0af90164db55a2f8df71f500819fffea45f5080b230
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 702a823d0e2b039832fc9fb11cff3befa8616945f816dbafd62d2921fe8f9130
[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" "702a823d0e2b039832fc9fb11cff3befa8616945f816dbafd62d2921fe8f9130", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         try!(write!(io, "<span style=\""));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |             try!(write!(io, "color:#{};", color));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             try!(write!(io, "font-style:italic;"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |             try!(write!(io, "{}", custom));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         try!(write!(io, "\">"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         try!(f(io));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         try!(write!(io, "</span>"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         try!(f(io));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         try!(write!(io, "<span style=\""));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |             try!(write!(io, "color:#{};", color));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             try!(write!(io, "color:#{};", self.level_color));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             try!(write!(io, "font-style:italic;"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             try!(write!(io, "{}", custom));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(write!(io, "\">"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         try!(f(io));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         try!(write!(io, "</span>"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:151:13
[INFO] [stderr]     |
[INFO] [stderr] 151 |             try!(serializer.print_comma());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:156:13
[INFO] [stderr]     |
[INFO] [stderr] 156 |             try!(serializer.print_comma());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:157:13
[INFO] [stderr]     |
[INFO] [stderr] 157 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:172:38
[INFO] [stderr]     |
[INFO] [stderr] 172 |         let mut record_value_stack = try!(self.record_value_stack(record, logger_values));
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |                 try!(self.print_indent(io, i));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 try!(io.write_all(&record_value_stack[i]));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:186:17
[INFO] [stderr]     |
[INFO] [stderr] 186 |                 try!(io.write_all(b"</pre>\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 |         try!(self.print_indent(io, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:198:9
[INFO] [stderr]     |
[INFO] [stderr] 198 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:205:13
[INFO] [stderr]     |
[INFO] [stderr] 205 |             try!(serializer.print_comma());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:206:13
[INFO] [stderr]     |
[INFO] [stderr] 206 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:230:21
[INFO] [stderr]     |
[INFO] [stderr] 230 |                     try!(serializer.print_comma());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 try!(v.serialize(record, k, &mut serializer));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:247:29
[INFO] [stderr]     |
[INFO] [stderr] 247 |             let mut value = try!(self.record_value_stack(record, parent));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:256:13
[INFO] [stderr]     |
[INFO] [stderr] 256 |             try!(write!(io, "  "));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn fmt(io: &mut io::Write,
[INFO] [stderr]    |                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:42:12
[INFO] [stderr]    |
[INFO] [stderr] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:42:20
[INFO] [stderr]    |
[INFO] [stderr] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:70:27
[INFO] [stderr]    |
[INFO] [stderr] 70 |                  io: &mut io::Write,
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         try!(write!(io, "<span style=\""));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |             try!(write!(io, "color:#{};", color));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             try!(write!(io, "font-style:italic;"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:71:30
[INFO] [stderr]    |
[INFO] [stderr] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:95:25
[INFO] [stderr]    |
[INFO] [stderr] 95 |                io: &mut io::Write,
[INFO] [stderr]    |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:96:20
[INFO] [stderr]    |
[INFO] [stderr] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |             try!(write!(io, "{}", custom));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         try!(write!(io, "\">"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         try!(f(io));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:96:28
[INFO] [stderr]    |
[INFO] [stderr] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         try!(write!(io, "</span>"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:102:25
[INFO] [stderr]     |
[INFO] [stderr] 102 |                io: &mut io::Write,
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         try!(f(io));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         try!(write!(io, "<span style=\""));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:103:20
[INFO] [stderr]     |
[INFO] [stderr] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:103:28
[INFO] [stderr]     |
[INFO] [stderr] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |             try!(write!(io, "color:#{};", color));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:109:25
[INFO] [stderr]     |
[INFO] [stderr] 109 |                io: &mut io::Write,
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             try!(write!(io, "color:#{};", self.level_color));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |             try!(write!(io, "font-weight:bold;"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             try!(write!(io, "font-style:italic;"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:110:20
[INFO] [stderr]     |
[INFO] [stderr] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:110:28
[INFO] [stderr]     |
[INFO] [stderr] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:116:25
[INFO] [stderr]     |
[INFO] [stderr] 116 |                io: &mut io::Write,
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             try!(write!(io, "{}", custom));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(write!(io, "\">"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         try!(f(io));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:117:20
[INFO] [stderr]     |
[INFO] [stderr] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:117:28
[INFO] [stderr]     |
[INFO] [stderr] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         try!(write!(io, "</span>"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:123:25
[INFO] [stderr]     |
[INFO] [stderr] 123 |                io: &mut io::Write,
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:124:20
[INFO] [stderr]     |
[INFO] [stderr] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:124:28
[INFO] [stderr]     |
[INFO] [stderr] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:20:68
[INFO] [stderr]    |
[INFO] [stderr] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stderr]    |                                                                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:151:13
[INFO] [stderr]     |
[INFO] [stderr] 151 |             try!(serializer.print_comma());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:156:13
[INFO] [stderr]     |
[INFO] [stderr] 156 |             try!(serializer.print_comma());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:157:13
[INFO] [stderr]     |
[INFO] [stderr] 157 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:172:38
[INFO] [stderr]     |
[INFO] [stderr] 172 |         let mut record_value_stack = try!(self.record_value_stack(record, logger_values));
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |                 try!(self.print_indent(io, i));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 try!(io.write_all(&record_value_stack[i]));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:186:17
[INFO] [stderr]     |
[INFO] [stderr] 186 |                 try!(io.write_all(b"</pre>\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |         try!(io.write_all(b"<pre style=\"margin-bottom:-0.5em\">"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 |         try!(self.print_indent(io, indent));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:198:9
[INFO] [stderr]     |
[INFO] [stderr] 198 |         try!(r_decorator.fmt_timestamp(io, &*self.fn_timestamp));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |         try!(r_decorator.fmt_level(io, &|io| write!(io, " {} ", record.level().as_short_str())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |         try!(r_decorator.fmt_msg(io, &|io| write!(io, "{}", record.msg())));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:205:13
[INFO] [stderr]     |
[INFO] [stderr] 205 |             try!(serializer.print_comma());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:206:13
[INFO] [stderr]     |
[INFO] [stderr] 206 |             try!(v.serialize(record, k, &mut serializer));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:230:21
[INFO] [stderr]     |
[INFO] [stderr] 230 |                     try!(serializer.print_comma());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 try!(v.serialize(record, k, &mut serializer));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:247:29
[INFO] [stderr]     |
[INFO] [stderr] 247 |             let mut value = try!(self.record_value_stack(record, parent));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:256:13
[INFO] [stderr]     |
[INFO] [stderr] 256 |             try!(write!(io, "  "));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn fmt(io: &mut io::Write,
[INFO] [stderr]    |                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:42:12
[INFO] [stderr]    |
[INFO] [stderr] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:42:20
[INFO] [stderr]    |
[INFO] [stderr] 42 |        f: &Fn(&mut io::Write) -> io::Result<()>,
[INFO] [stderr]    |                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:70:27
[INFO] [stderr]    |
[INFO] [stderr] 70 |                  io: &mut io::Write,
[INFO] [stderr]    |                           ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:71:30
[INFO] [stderr]    |
[INFO] [stderr] 71 |                  f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]    |                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:95:25
[INFO] [stderr]    |
[INFO] [stderr] 95 |                io: &mut io::Write,
[INFO] [stderr]    |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:96:20
[INFO] [stderr]    |
[INFO] [stderr] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decorator.rs:96:28
[INFO] [stderr]    |
[INFO] [stderr] 96 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:135:29
[INFO] [stderr]     |
[INFO] [stderr] 135 |                    io: &mut io::Write,
[INFO] [stderr]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:102:25
[INFO] [stderr]     |
[INFO] [stderr] 102 |                io: &mut io::Write,
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:103:20
[INFO] [stderr]     |
[INFO] [stderr] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:166:32
[INFO] [stderr]     |
[INFO] [stderr] 166 |                       io: &mut io::Write,
[INFO] [stderr]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:254:37
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn print_indent(&self, io: &mut io::Write, indent: usize) -> io::Result<()> {
[INFO] [stderr]     |                                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:264:24
[INFO] [stderr]     |
[INFO] [stderr] 264 |               io: &mut io::Write,
[INFO] [stderr]     |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:103:28
[INFO] [stderr]     |
[INFO] [stderr] 103 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:109:25
[INFO] [stderr]     |
[INFO] [stderr] 109 |                io: &mut io::Write,
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:110:20
[INFO] [stderr]     |
[INFO] [stderr] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:276:24
[INFO] [stderr]     |
[INFO] [stderr] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:276:32
[INFO] [stderr]     |
[INFO] [stderr] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stderr]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:110:28
[INFO] [stderr]     |
[INFO] [stderr] 110 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:116:25
[INFO] [stderr]     |
[INFO] [stderr] 116 |                io: &mut io::Write,
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:283:33
[INFO] [stderr]     |
[INFO] [stderr] 283 | pub fn timestamp_local(io: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:290:31
[INFO] [stderr]     |
[INFO] [stderr] 290 | pub fn timestamp_utc(io: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:117:20
[INFO] [stderr]     |
[INFO] [stderr] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:117:28
[INFO] [stderr]     |
[INFO] [stderr] 117 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:123:25
[INFO] [stderr]     |
[INFO] [stderr] 123 |                io: &mut io::Write,
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:124:20
[INFO] [stderr]     |
[INFO] [stderr] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:381:26
[INFO] [stderr]     |
[INFO] [stderr] 381 |         where F: Fn(&mut io::Write) -> io::Result<()> + 'static + Send + Sync
[INFO] [stderr]     |                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
[INFO] [stderr]    --> src/lib.rs:246:54
[INFO] [stderr]     |
[INFO] [stderr] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
[INFO] [stderr]     |                                                      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:160:14
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let (mut io, _) = serializer.finish();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decorator.rs:124:28
[INFO] [stderr]     |
[INFO] [stderr] 124 |                f: &Fn(&mut io::Write) -> io::Result<()>)
[INFO] [stderr]     |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:20:68
[INFO] [stderr]    |
[INFO] [stderr] 20 |         try!(self.decorator.fmt_separator(&mut self.io, &|io: &mut io::Write| write!(io, ", ")));
[INFO] [stderr]    |                                                                    ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:209:14
[INFO] [stderr]     |
[INFO] [stderr] 209 |         let (mut io, _) = serializer.finish();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 186 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         -------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout] 
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:135:29
[INFO] [stderr]     |
[INFO] [stderr] 135 |                    io: &mut io::Write,
[INFO] [stderr]     |                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:166:32
[INFO] [stderr]     |
[INFO] [stderr] 166 |                       io: &mut io::Write,
[INFO] [stderr]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:254:37
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn print_indent(&self, io: &mut io::Write, indent: usize) -> io::Result<()> {
[INFO] [stderr]     |                                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:264:24
[INFO] [stderr]     |
[INFO] [stderr] 264 |               io: &mut io::Write,
[INFO] [stderr]     |                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:276:24
[INFO] [stderr]     |
[INFO] [stderr] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut io::Write) -> io::Result<()> + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:276:32
[INFO] [stderr]     |
[INFO] [stderr] 276 | pub type TimestampFn = Fn(&mut io::Write) -> io::Result<()> + Send + Sync;
[INFO] [stderr]     |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:283:33
[INFO] [stderr]     |
[INFO] [stderr] 283 | pub fn timestamp_local(io: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                 ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:290:31
[INFO] [stderr]     |
[INFO] [stderr] 290 | pub fn timestamp_utc(io: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                               ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:381:26
[INFO] [stderr]     |
[INFO] [stderr] 381 |         where F: Fn(&mut io::Write) -> io::Result<()> + 'static + Send + Sync
[INFO] [stderr]     |                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'slog::OwnedKeyValueList::parent': &Option<...> is a stupid type to return. Use `get_parent` for now.
[INFO] [stderr]    --> src/lib.rs:246:54
[INFO] [stderr]     |
[INFO] [stderr] 246 |         if let Some(ref parent) = *logger_values_ref.parent() {
[INFO] [stderr]     |                                                      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:160:14
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let (mut io, _) = serializer.finish();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:209:14
[INFO] [stderr]     |
[INFO] [stderr] 209 |         let (mut io, _) = serializer.finish();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 186 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/slog_html-61eb0b0ee614cbf6
[INFO] [stderr]    Doc-tests slog-html
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 7) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 40) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 7) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/lib.rs:16:34
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x557ca514cea5 - backtrace::backtrace::libunwind::trace::h5e2646fa3eddf2ea
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stdout]    1:     0x557ca514cea5 - backtrace::backtrace::trace_unsynchronized::hb95dd7f77ce47877
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x557ca514cea5 - std::sys_common::backtrace::_print_fmt::h5e71b67af43fd70d
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stdout]    3:     0x557ca514cea5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdb4a83d2b61107e5
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stdout]    4:     0x557ca516ed7c - core::fmt::write::ha20e7262fa3e8a7a
[INFO] [stdout]                                at src/libcore/fmt/mod.rs:1076
[INFO] [stdout]    5:     0x557ca514b572 - std::io::Write::write_fmt::h1aebfe8a5a79e36d
[INFO] [stdout]                                at src/libstd/io/mod.rs:1537
[INFO] [stdout]    6:     0x557ca514f310 - std::sys_common::backtrace::_print::h9c07314cc66ba539
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stdout]    7:     0x557ca514f310 - std::sys_common::backtrace::print::hd1fd65f49a2d8544
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stdout]    8:     0x557ca514f310 - std::panicking::default_hook::{{closure}}::h222da46485ab36fc
[INFO] [stdout]                                at src/libstd/panicking.rs:198
[INFO] [stdout]    9:     0x557ca514f05c - std::panicking::default_hook::hc5868949d129ed00
[INFO] [stdout]                                at src/libstd/panicking.rs:217
[INFO] [stdout]   10:     0x557ca514f953 - std::panicking::rust_panic_with_hook::h26a6ab8b0993c0c8
[INFO] [stdout]                                at src/libstd/panicking.rs:526
[INFO] [stdout]   11:     0x557ca514f54b - rust_begin_unwind
[INFO] [stdout]                                at src/libstd/panicking.rs:437
[INFO] [stdout]   12:     0x557ca516cce1 - core::panicking::panic_fmt::h17139c2000299725
[INFO] [stdout]                                at src/libcore/panicking.rs:85
[INFO] [stdout]   13:     0x557ca516cb03 - core::option::expect_none_failed::h972f96abb4ec8952
[INFO] [stdout]                                at src/libcore/option.rs:1269
[INFO] [stdout]   14:     0x557ca5112d7b - core::result::Result<T,E>::unwrap::hd0a36c8c8b914130
[INFO] [stdout]   15:     0x557ca512351a - rust_out::main::h405f65324f7b53be
[INFO] [stdout]   16:     0x557ca510a863 - std::rt::lang_start::{{closure}}::ha8395b9615e12984
[INFO] [stdout]   17:     0x557ca514fd23 - std::rt::lang_start_internal::{{closure}}::h84a998219831fa70
[INFO] [stdout]                                at src/libstd/rt.rs:52
[INFO] [stdout]   18:     0x557ca514fd23 - std::panicking::try::do_call::he8e1d689a3e26def
[INFO] [stdout]                                at src/libstd/panicking.rs:348
[INFO] [stdout]   19:     0x557ca514fd23 - std::panicking::try::h264b6eebc2fa7bbf
[INFO] [stdout]                                at src/libstd/panicking.rs:325
[INFO] [stdout]   20:     0x557ca514fd23 - std::panic::catch_unwind::hbf28fafa723b2128
[INFO] [stdout]                                at src/libstd/panic.rs:394
[INFO] [stdout]   21:     0x557ca514fd23 - std::rt::lang_start_internal::he959aa59bc3ec202
[INFO] [stdout]                                at src/libstd/rt.rs:51
[INFO] [stdout]   22:     0x557ca510a848 - std::rt::lang_start::hf91fc87199e1c84e
[INFO] [stdout]   23:     0x557ca512384b - main
[INFO] [stdout]   24:     0x7f82207740b3 - __libc_start_main
[INFO] [stdout]   25:     0x557ca510917e - _start
[INFO] [stdout]   26:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 40) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/lib.rs:16:34
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x556096a9f205 - backtrace::backtrace::libunwind::trace::h5e2646fa3eddf2ea
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stdout]    1:     0x556096a9f205 - backtrace::backtrace::trace_unsynchronized::hb95dd7f77ce47877
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x556096a9f205 - std::sys_common::backtrace::_print_fmt::h5e71b67af43fd70d
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stdout]    3:     0x556096a9f205 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdb4a83d2b61107e5
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stdout]    4:     0x556096ac10dc - core::fmt::write::ha20e7262fa3e8a7a
[INFO] [stdout]                                at src/libcore/fmt/mod.rs:1076
[INFO] [stdout]    5:     0x556096a9d8d2 - std::io::Write::write_fmt::h1aebfe8a5a79e36d
[INFO] [stdout]                                at src/libstd/io/mod.rs:1537
[INFO] [stdout]    6:     0x556096aa1670 - std::sys_common::backtrace::_print::h9c07314cc66ba539
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stdout]    7:     0x556096aa1670 - std::sys_common::backtrace::print::hd1fd65f49a2d8544
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stdout]    8:     0x556096aa1670 - std::panicking::default_hook::{{closure}}::h222da46485ab36fc
[INFO] [stdout]                                at src/libstd/panicking.rs:198
[INFO] [stdout]    9:     0x556096aa13bc - std::panicking::default_hook::hc5868949d129ed00
[INFO] [stdout]                                at src/libstd/panicking.rs:217
[INFO] [stdout]   10:     0x556096aa1cb3 - std::panicking::rust_panic_with_hook::h26a6ab8b0993c0c8
[INFO] [stdout]                                at src/libstd/panicking.rs:526
[INFO] [stdout]   11:     0x556096aa18ab - rust_begin_unwind
[INFO] [stdout]                                at src/libstd/panicking.rs:437
[INFO] [stdout]   12:     0x556096abf041 - core::panicking::panic_fmt::h17139c2000299725
[INFO] [stdout]                                at src/libcore/panicking.rs:85
[INFO] [stdout]   13:     0x556096abee63 - core::option::expect_none_failed::h972f96abb4ec8952
[INFO] [stdout]                                at src/libcore/option.rs:1269
[INFO] [stdout]   14:     0x556096a64d7b - core::result::Result<T,E>::unwrap::hd0a36c8c8b914130
[INFO] [stdout]   15:     0x556096a75522 - rust_out::main::h405f65324f7b53be
[INFO] [stdout]   16:     0x556096a5c863 - std::rt::lang_start::{{closure}}::ha8395b9615e12984
[INFO] [stdout]   17:     0x556096aa2083 - std::rt::lang_start_internal::{{closure}}::h84a998219831fa70
[INFO] [stdout]                                at src/libstd/rt.rs:52
[INFO] [stdout]   18:     0x556096aa2083 - std::panicking::try::do_call::he8e1d689a3e26def
[INFO] [stdout]                                at src/libstd/panicking.rs:348
[INFO] [stdout]   19:     0x556096aa2083 - std::panicking::try::h264b6eebc2fa7bbf
[INFO] [stdout]                                at src/libstd/panicking.rs:325
[INFO] [stdout]   20:     0x556096aa2083 - std::panic::catch_unwind::hbf28fafa723b2128
[INFO] [stdout]                                at src/libstd/panic.rs:394
[INFO] [stdout]   21:     0x556096aa2083 - std::rt::lang_start_internal::he959aa59bc3ec202
[INFO] [stdout]                                at src/libstd/rt.rs:51
[INFO] [stdout]   22:     0x556096a5c848 - std::rt::lang_start::hf91fc87199e1c84e
[INFO] [stdout]   23:     0x556096a75a2b - main
[INFO] [stdout]   24:     0x7f5acc5090b3 - __libc_start_main
[INFO] [stdout]   25:     0x556096a5b17e - _start
[INFO] [stdout]   26:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 40)
[INFO] [stdout]     src/lib.rs - (line 7)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "702a823d0e2b039832fc9fb11cff3befa8616945f816dbafd62d2921fe8f9130", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "702a823d0e2b039832fc9fb11cff3befa8616945f816dbafd62d2921fe8f9130", kill_on_drop: false }`
[INFO] [stdout] 702a823d0e2b039832fc9fb11cff3befa8616945f816dbafd62d2921fe8f9130