[INFO] fetching crate slog-html 0.1.3... [INFO] testing slog-html-0.1.3 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] extracting crate slog-html 0.1.3 into /workspace/builds/worker-115/source [INFO] validating manifest of crates.io crate slog-html 0.1.3 on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-115/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 08726b56d9914489861d9d132abd5ab40e0d301a189c1b87e2eea2588cd51d4e [INFO] running `Command { std: "docker" "start" "-a" "08726b56d9914489861d9d132abd5ab40e0d301a189c1b87e2eea2588cd51d4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "08726b56d9914489861d9d132abd5ab40e0d301a189c1b87e2eea2588cd51d4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "08726b56d9914489861d9d132abd5ab40e0d301a189c1b87e2eea2588cd51d4e", kill_on_drop: false }` [INFO] [stdout] 08726b56d9914489861d9d132abd5ab40e0d301a189c1b87e2eea2588cd51d4e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 87c667525060a6090a93410a4b7eac0c9890e9517e4976aea852f29891abed6d [INFO] running `Command { std: "docker" "start" "-a" "87c667525060a6090a93410a4b7eac0c9890e9517e4976aea852f29891abed6d", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.108 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling slog v1.7.1 [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-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling time v0.1.44 [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: 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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/decorator.rs:46:9 [INFO] [stdout] | [INFO] [stdout] 46 | try!(write!(io, " 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 macro `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 macro `try`: use the `?` operator instead [INFO] [stdout] --> src/decorator.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | try!(write!(io, "")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead [INFO] [stdout] --> src/decorator.rs:73:9 [INFO] [stdout] | [INFO] [stdout] 73 | try!(write!(io, " 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 macro `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 macro `try`: use the `?` operator instead [INFO] [stdout] --> src/decorator.rs:90:9 [INFO] [stdout] | [INFO] [stdout] 90 | try!(write!(io, "")); [INFO] [stdout] | ^^^ [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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: 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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `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: 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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `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, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 39 | s!(self, key, "None"); [INFO] [stdout] | --------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 39 | s!(self, key, "None"); [INFO] [stdout] | --------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 39 | s!(self, key, "None"); [INFO] [stdout] | --------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 39 | s!(self, key, "None"); [INFO] [stdout] | --------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 39 | s!(self, key, "None"); [INFO] [stdout] | --------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 39 | s!(self, key, "None"); [INFO] [stdout] | --------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 44 | s!(self, key, "()"); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 44 | s!(self, key, "()"); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 44 | s!(self, key, "()"); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 44 | s!(self, key, "()"); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 44 | s!(self, key, "()"); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 44 | s!(self, key, "()"); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 49 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 49 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 49 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 49 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 49 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 49 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 54 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 54 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 54 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 54 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 54 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 54 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 59 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 59 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 59 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 59 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 59 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 59 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 64 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 64 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 64 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 64 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 64 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 64 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 69 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 69 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 69 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 69 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 69 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 69 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 74 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 74 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 74 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 74 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 74 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 74 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 79 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 79 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 79 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 79 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 79 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 79 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 84 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 84 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 84 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 84 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 84 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 84 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 89 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 89 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 89 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 89 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 89 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 89 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 94 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 94 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 94 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 94 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 94 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 94 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 99 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 99 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 99 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 99 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 99 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 99 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 104 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 104 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 104 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 104 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 104 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 104 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 109 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 109 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 109 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 109 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 109 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 109 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 114 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 114 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 114 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 114 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 114 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 114 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 119 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 119 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 119 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 119 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 119 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 119 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 124 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:32:9 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 124 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/serializer.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v))); [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 124 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:31:58 [INFO] [stdout] | [INFO] [stdout] 31 | try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 124 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:32:64 [INFO] [stdout] | [INFO] [stdout] 32 | try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": "))); [INFO] [stdout] | ^^^^^^^^^ help: use `dyn`: `dyn io::Write` [INFO] [stdout] ... [INFO] [stdout] 124 | s!(self, key, val); [INFO] [stdout] | ------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/serializer.rs:33:60 [INFO] [stdout] | [INFO] [stdout] 33 | try!($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] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lib.rs:142:9 [INFO] [stdout] | [INFO] [stdout] 142 | try!(io.write_all(b"
"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |         try!(io.write_all(b"
"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:183:17
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 try!(io.write_all(b"
"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 try!(io.write_all(b"
\n"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `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 9.79s
[INFO] running `Command { std: "docker" "inspect" "87c667525060a6090a93410a4b7eac0c9890e9517e4976aea852f29891abed6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87c667525060a6090a93410a4b7eac0c9890e9517e4976aea852f29891abed6d", kill_on_drop: false }`
[INFO] [stdout] 87c667525060a6090a93410a4b7eac0c9890e9517e4976aea852f29891abed6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44f62f001e23744f667b4421d73d1437f6eaa9d15423d530178c61fb7c45316c
[INFO] running `Command { std: "docker" "start" "-a" "44f62f001e23744f667b4421d73d1437f6eaa9d15423d530178c61fb7c45316c", kill_on_drop: false }`
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         try!(write!(io, " 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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         try!(write!(io, ""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         try!(write!(io, " 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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         try!(write!(io, ""));
[INFO] [stdout]    |         ^^^
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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: 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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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: 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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         try!(io.write_all(b"
"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling slog-html v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |         try!(io.write_all(b"
"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:183:17
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 try!(io.write_all(b"
"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 try!(io.write_all(b"
\n"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `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: 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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         try!(write!(io, " 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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         try!(write!(io, ""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         try!(write!(io, " 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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decorator.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         try!(write!(io, ""));
[INFO] [stdout]    |         ^^^
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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: 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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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: 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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 39 |         s!(self, key, "None");
[INFO] [stdout]    |         --------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 44 |         s!(self, key, "()");
[INFO] [stdout]    |         ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 49 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 54 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 59 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 64 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 69 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 74 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 79 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 84 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 89 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 94 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/serializer.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:31:58
[INFO] [stdout]    |
[INFO] [stdout] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:32:64
[INFO] [stdout]    |
[INFO] [stdout] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/serializer.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 99 |         s!(self, key, val);
[INFO] [stdout]    |         ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see 
[INFO] [stdout]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 104 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 109 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 114 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 119 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:31:9
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:32:9
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/serializer.rs:33:9
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:31:58
[INFO] [stdout]     |
[INFO] [stdout] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stdout]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:32:64
[INFO] [stdout]     |
[INFO] [stdout] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stdout]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] ...
[INFO] [stdout] 124 |         s!(self, key, val);
[INFO] [stdout]     |         ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/serializer.rs:33:60
[INFO] [stdout]     |
[INFO] [stdout] 33  |         try!($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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         try!(io.write_all(b"
"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |         try!(io.write_all(b"
"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:183:17
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 try!(io.write_all(b"
"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:186:17
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 try!(io.write_all(b"
\n"));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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: 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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `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 1.55s
[INFO] running `Command { std: "docker" "inspect" "44f62f001e23744f667b4421d73d1437f6eaa9d15423d530178c61fb7c45316c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44f62f001e23744f667b4421d73d1437f6eaa9d15423d530178c61fb7c45316c", kill_on_drop: false }`
[INFO] [stdout] 44f62f001e23744f667b4421d73d1437f6eaa9d15423d530178c61fb7c45316c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9ef64eb27f1fb56004cd67cb610fa8fbe04c4b9ed5dd57cf9ba1e6c358cee85a
[INFO] running `Command { std: "docker" "start" "-a" "9ef64eb27f1fb56004cd67cb610fa8fbe04c4b9ed5dd57cf9ba1e6c358cee85a", kill_on_drop: false }`
[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]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         try!(write!(io, " src/decorator.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         try!(write!(io, "\">"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         try!(write!(io, ""));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         try!(write!(io, " src/decorator.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(write!(io, "\">"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/decorator.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         try!(write!(io, ""));
[INFO] [stderr]    |         ^^^
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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: 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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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/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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         --------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         --------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         --------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         --------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         --------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 39 |         s!(self, key, "None");
[INFO] [stderr]    |         --------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 44 |         s!(self, key, "()");
[INFO] [stderr]    |         ------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 49 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 54 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 59 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 64 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 69 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 74 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 79 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 84 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 89 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 94 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/serializer.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:31:58
[INFO] [stderr]    |
[INFO] [stderr] 31 |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]    |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:32:64
[INFO] [stderr]    |
[INFO] [stderr] 32 |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]    |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/serializer.rs:33:60
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]    |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 99 |         s!(self, key, val);
[INFO] [stderr]    |         ------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see 
[INFO] [stderr]    = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 104 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 109 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 114 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 119 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:31:9
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:32:9
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/serializer.rs:33:9
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($s.decorator.fmt_value(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $v)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:31:58
[INFO] [stderr]     |
[INFO] [stderr] 31  |         try!($s.decorator.fmt_key(&mut $s.io, &|io: &mut io::Write| write!(io, "{}", $k)));
[INFO] [stderr]     |                                                          ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:32:64
[INFO] [stderr]     |
[INFO] [stderr] 32  |         try!($s.decorator.fmt_separator(&mut $s.io, &|io: &mut io::Write| write!(io, ": ")));
[INFO] [stderr]     |                                                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] ...
[INFO] [stderr] 124 |         s!(self, key, val);
[INFO] [stderr]     |         ------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/serializer.rs:33:60
[INFO] [stderr]     |
[INFO] [stderr] 33  |         try!($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]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr]     = note: this warning originates in the macro `s` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         try!(io.write_all(b"
"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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: 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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |         try!(io.write_all(b"
"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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 macro `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: 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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 try!(io.write_all(b"
"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:186:17
[INFO] [stderr]     |
[INFO] [stderr] 186 |                 try!(io.write_all(b"
\n"));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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: 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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `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: 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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[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: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `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: `slog-html` (lib) generated 186 warnings
[INFO] [stderr] warning: `slog-html` (lib test) generated 186 warnings (186 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slog_html-cd470ae26787c4ef)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests slog-html
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 40) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 7) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[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:     0x556e3195536c - std::backtrace_rs::backtrace::libunwind::trace::h7630ba4cba718aa0
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x556e3195536c - std::backtrace_rs::backtrace::trace_unsynchronized::he7498e79c157f5ac
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x556e3195536c - std::sys_common::backtrace::_print_fmt::hdaebadaee17bca49
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x556e3195536c - ::fmt::h82b0e3aaf8a96140
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x556e3197399c - core::fmt::write::h72801a82c94e6ff1
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/core/src/fmt/mod.rs:1149:17
[INFO] [stdout]    5:     0x556e31952ce5 - std::io::Write::write_fmt::hc2da38dc44811df8
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/io/mod.rs:1697:15
[INFO] [stdout]    6:     0x556e31956ba0 - std::sys_common::backtrace::_print::h1c9a1d19c48821c1
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x556e31956ba0 - std::sys_common::backtrace::print::h7ce8802039fa9d0e
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x556e31956ba0 - std::panicking::default_hook::{{closure}}::hb2a74a8c1499c326
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:211:50
[INFO] [stdout]    9:     0x556e3195674b - std::panicking::default_hook::hf4f180b00076f2b2
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:228:9
[INFO] [stdout]   10:     0x556e31957254 - std::panicking::rust_panic_with_hook::he85ce8435493b711
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:606:17
[INFO] [stdout]   11:     0x556e31956d30 - std::panicking::begin_panic_handler::{{closure}}::h31e15f69e6235bd2
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:502:13
[INFO] [stdout]   12:     0x556e31955824 - std::sys_common::backtrace::__rust_end_short_backtrace::hfce2fadb61aaa3ae
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:139:18
[INFO] [stdout]   13:     0x556e31956c99 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:498:5
[INFO] [stdout]   14:     0x556e31900cd1 - core::panicking::panic_fmt::h7b8580d81fcbbacd
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/core/src/panicking.rs:107:14
[INFO] [stdout]   15:     0x556e31900dc3 - core::result::unwrap_failed::h885d3f7beb571353
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/core/src/result.rs:1613:5
[INFO] [stdout]   16:     0x556e3190cc29 - core::result::Result::unwrap::h709c328c8fa863f8
[INFO] [stdout]   17:     0x556e3191e4d6 - rust_out::main::h61823b600df25383
[INFO] [stdout]   18:     0x556e319081a3 - core::ops::function::FnOnce::call_once::h827fb1f4029b40e6
[INFO] [stdout]   19:     0x556e31901b19 - std::sys_common::backtrace::__rust_begin_short_backtrace::h14f53ef84fb8b5f7
[INFO] [stdout]   20:     0x556e31902b59 - std::rt::lang_start::{{closure}}::h5922618cc8a7ae58
[INFO] [stdout]   21:     0x556e31954bb1 - core::ops::function::impls:: for &F>::call_once::h0e73392810ecd318
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/core/src/ops/function.rs:259:13
[INFO] [stdout]   22:     0x556e31954bb1 - std::panicking::try::do_call::h12dcb4a4f352a507
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:406:40
[INFO] [stdout]   23:     0x556e31954bb1 - std::panicking::try::h0d978c76ab4a3863
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:370:19
[INFO] [stdout]   24:     0x556e31954bb1 - std::panic::catch_unwind::hab40227675186980
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panic.rs:133:14
[INFO] [stdout]   25:     0x556e31954bb1 - std::rt::lang_start_internal::{{closure}}::hc34786299e7d2cf7
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/rt.rs:128:48
[INFO] [stdout]   26:     0x556e31954bb1 - std::panicking::try::do_call::h38e7a9128f21d387
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:406:40
[INFO] [stdout]   27:     0x556e31954bb1 - std::panicking::try::h32d4e72fd8922bce
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:370:19
[INFO] [stdout]   28:     0x556e31954bb1 - std::panic::catch_unwind::h9a345671d889d41f
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panic.rs:133:14
[INFO] [stdout]   29:     0x556e31954bb1 - std::rt::lang_start_internal::h9e691a4f557eb2a3
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/rt.rs:128:20
[INFO] [stdout]   30:     0x556e31902b41 - std::rt::lang_start::h886614fd12d1e379
[INFO] [stdout]   31:     0x556e3191ea33 - main
[INFO] [stdout]   32:     0x7fc0dbd130b3 - __libc_start_main
[INFO] [stdout]   33:     0x556e3190144e - _start
[INFO] [stdout]   34:                0x0 - 
[INFO] [stdout] 
[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:     0x561e6cbba03c - std::backtrace_rs::backtrace::libunwind::trace::h7630ba4cba718aa0
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x561e6cbba03c - std::backtrace_rs::backtrace::trace_unsynchronized::he7498e79c157f5ac
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x561e6cbba03c - std::sys_common::backtrace::_print_fmt::hdaebadaee17bca49
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x561e6cbba03c - ::fmt::h82b0e3aaf8a96140
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x561e6cbd866c - core::fmt::write::h72801a82c94e6ff1
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/core/src/fmt/mod.rs:1149:17
[INFO] [stdout]    5:     0x561e6cbb79b5 - std::io::Write::write_fmt::hc2da38dc44811df8
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/io/mod.rs:1697:15
[INFO] [stdout]    6:     0x561e6cbbb870 - std::sys_common::backtrace::_print::h1c9a1d19c48821c1
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x561e6cbbb870 - std::sys_common::backtrace::print::h7ce8802039fa9d0e
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x561e6cbbb870 - std::panicking::default_hook::{{closure}}::hb2a74a8c1499c326
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:211:50
[INFO] [stdout]    9:     0x561e6cbbb41b - std::panicking::default_hook::hf4f180b00076f2b2
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:228:9
[INFO] [stdout]   10:     0x561e6cbbbf24 - std::panicking::rust_panic_with_hook::he85ce8435493b711
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:606:17
[INFO] [stdout]   11:     0x561e6cbbba00 - std::panicking::begin_panic_handler::{{closure}}::h31e15f69e6235bd2
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:502:13
[INFO] [stdout]   12:     0x561e6cbba4f4 - std::sys_common::backtrace::__rust_end_short_backtrace::hfce2fadb61aaa3ae
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/sys_common/backtrace.rs:139:18
[INFO] [stdout]   13:     0x561e6cbbb969 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:498:5
[INFO] [stdout]   14:     0x561e6cb65cd1 - core::panicking::panic_fmt::h7b8580d81fcbbacd
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/core/src/panicking.rs:107:14
[INFO] [stdout]   15:     0x561e6cb65dc3 - core::result::unwrap_failed::h885d3f7beb571353
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/core/src/result.rs:1613:5
[INFO] [stdout]   16:     0x561e6cb71c29 - core::result::Result::unwrap::h709c328c8fa863f8
[INFO] [stdout]   17:     0x561e6cb834ce - rust_out::main::h61823b600df25383
[INFO] [stdout]   18:     0x561e6cb6d1a3 - core::ops::function::FnOnce::call_once::h827fb1f4029b40e6
[INFO] [stdout]   19:     0x561e6cb66b19 - std::sys_common::backtrace::__rust_begin_short_backtrace::h14f53ef84fb8b5f7
[INFO] [stdout]   20:     0x561e6cb67b59 - std::rt::lang_start::{{closure}}::h5922618cc8a7ae58
[INFO] [stdout]   21:     0x561e6cbb9881 - core::ops::function::impls:: for &F>::call_once::h0e73392810ecd318
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/core/src/ops/function.rs:259:13
[INFO] [stdout]   22:     0x561e6cbb9881 - std::panicking::try::do_call::h12dcb4a4f352a507
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:406:40
[INFO] [stdout]   23:     0x561e6cbb9881 - std::panicking::try::h0d978c76ab4a3863
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:370:19
[INFO] [stdout]   24:     0x561e6cbb9881 - std::panic::catch_unwind::hab40227675186980
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panic.rs:133:14
[INFO] [stdout]   25:     0x561e6cbb9881 - std::rt::lang_start_internal::{{closure}}::hc34786299e7d2cf7
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/rt.rs:128:48
[INFO] [stdout]   26:     0x561e6cbb9881 - std::panicking::try::do_call::h38e7a9128f21d387
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:406:40
[INFO] [stdout]   27:     0x561e6cbb9881 - std::panicking::try::h32d4e72fd8922bce
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panicking.rs:370:19
[INFO] [stdout]   28:     0x561e6cbb9881 - std::panic::catch_unwind::h9a345671d889d41f
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/panic.rs:133:14
[INFO] [stdout]   29:     0x561e6cbb9881 - std::rt::lang_start_internal::h9e691a4f557eb2a3
[INFO] [stdout]                                at /rustc/722e1797249a965b6335aebd65d777f917e498f1/library/std/src/rt.rs:128:20
[INFO] [stdout]   30:     0x561e6cb67b41 - std::rt::lang_start::h886614fd12d1e379
[INFO] [stdout]   31:     0x561e6cb83853 - main
[INFO] [stdout]   32:     0x7f84957410b3 - __libc_start_main
[INFO] [stdout]   33:     0x561e6cb6644e - _start
[INFO] [stdout]   34:                0x0 - 
[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; finished in 1.33s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9ef64eb27f1fb56004cd67cb610fa8fbe04c4b9ed5dd57cf9ba1e6c358cee85a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ef64eb27f1fb56004cd67cb610fa8fbe04c4b9ed5dd57cf9ba1e6c358cee85a", kill_on_drop: false }`
[INFO] [stdout] 9ef64eb27f1fb56004cd67cb610fa8fbe04c4b9ed5dd57cf9ba1e6c358cee85a