[INFO] crate slog 2.5.2 is already in cache
[INFO] checking slog-2.5.2 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate slog 2.5.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate slog 2.5.2 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate slog 2.5.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate slog 2.5.2
[INFO] tweaked toml for crates.io crate slog 2.5.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 09aef2d27156a34e9a39c2232dc76c1dc8ebdff4edf3a23a0788d75a468d1a8a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "09aef2d27156a34e9a39c2232dc76c1dc8ebdff4edf3a23a0788d75a468d1a8a"`
[INFO] [stderr]    Compiling slog v2.5.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:1251:9
[INFO] [stderr]      |
[INFO] [stderr] 1251 |         try!(write!(f, "Logger{:?}", self.list));
[INFO] [stderr]      |         ^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3226:9
[INFO] [stderr]      |
[INFO] [stderr] 3226 |         try!(self.0.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3350:9
[INFO] [stderr]      |
[INFO] [stderr] 3350 |         try!(self.kv.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3351:9
[INFO] [stderr]      |
[INFO] [stderr] 3351 |         try!(self.next_node.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3363:9
[INFO] [stderr]      |
[INFO] [stderr] 3363 |         try!(self.next_node.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3364:9
[INFO] [stderr]      |
[INFO] [stderr] 3364 |         try!(self.node.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3376:9
[INFO] [stderr]      |
[INFO] [stderr] 3376 |         try!(self.node.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3384:9
[INFO] [stderr]      |
[INFO] [stderr] 3384 |         try!(write!(f, "("));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3390:21
[INFO] [stderr]      |
[INFO] [stderr] 3390 |                     try!(write!(f, ", "));
[INFO] [stderr]      |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3393:17
[INFO] [stderr]      |
[INFO] [stderr] 3393 |                 try!(write!(f, "{}", key));
[INFO] [stderr]      |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3399:13
[INFO] [stderr]      |
[INFO] [stderr] 3399 |             try!(
[INFO] [stderr]      |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3413:9
[INFO] [stderr]      |
[INFO] [stderr] 3413 |         try!(write!(f, ")"));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1079:27
[INFO] [stderr]      |
[INFO] [stderr] 1079 | pub struct Logger<D = Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
[INFO] [stderr]      |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1124:24
[INFO] [stderr]      |
[INFO] [stderr] 1124 |                 as Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1222:21
[INFO] [stderr]      |
[INFO] [stderr] 1222 |     ) -> Logger<Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
[INFO] [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1228:24
[INFO] [stderr]      |
[INFO] [stderr] 1228 |                 as Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1238:21
[INFO] [stderr]      |
[INFO] [stderr] 1238 |     ) -> Logger<Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
[INFO] [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1807:17
[INFO] [stderr]      |
[INFO] [stderr] 1807 |     map_fn: Box<MapErrFn<D::Err, E, Output = E>>,
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MapErrFn<D::Err, E, Output = E>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1995:32
[INFO] [stderr]      |
[INFO] [stderr] 1995 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stderr]      |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2768:26
[INFO] [stderr]      |
[INFO] [stderr] 2768 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2780:26
[INFO] [stderr]      |
[INFO] [stderr] 2780 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2800 | impl_value_for!(usize, emit_usize);
[INFO] [stderr]      | ----------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2801 | impl_value_for!(isize, emit_isize);
[INFO] [stderr]      | ----------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2802 | impl_value_for!(bool, emit_bool);
[INFO] [stderr]      | --------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2803 | impl_value_for!(char, emit_char);
[INFO] [stderr]      | --------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2804 | impl_value_for!(u8, emit_u8);
[INFO] [stderr]      | ----------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2805 | impl_value_for!(i8, emit_i8);
[INFO] [stderr]      | ----------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2806 | impl_value_for!(u16, emit_u16);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2807 | impl_value_for!(i16, emit_i16);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2808 | impl_value_for!(u32, emit_u32);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2809 | impl_value_for!(i32, emit_i32);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2810 | impl_value_for!(f32, emit_f32);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2811 | impl_value_for!(u64, emit_u64);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2812 | impl_value_for!(i64, emit_i64);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2813 | impl_value_for!(f64, emit_f64);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2815 | impl_value_for!(u128, emit_u128);
[INFO] [stderr]      | --------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2817 | impl_value_for!(i128, emit_i128);
[INFO] [stderr]      | --------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2824:26
[INFO] [stderr]      |
[INFO] [stderr] 2824 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2835:26
[INFO] [stderr]      |
[INFO] [stderr] 2835 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2846:26
[INFO] [stderr]      |
[INFO] [stderr] 2846 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2857:26
[INFO] [stderr]      |
[INFO] [stderr] 2857 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2868:26
[INFO] [stderr]      |
[INFO] [stderr] 2868 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2885:26
[INFO] [stderr]      |
[INFO] [stderr] 2885 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2898:26
[INFO] [stderr]      |
[INFO] [stderr] 2898 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2912:26
[INFO] [stderr]      |
[INFO] [stderr] 2912 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2926:26
[INFO] [stderr]      |
[INFO] [stderr] 2926 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2938:26
[INFO] [stderr]      |
[INFO] [stderr] 2938 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2950:26
[INFO] [stderr]      |
[INFO] [stderr] 2950 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2969:26
[INFO] [stderr]      |
[INFO] [stderr] 2969 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2986:25
[INFO] [stderr]      |
[INFO] [stderr] 2986 |     serializer: &'a mut Serializer,
[INFO] [stderr]      |                         ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3064:26
[INFO] [stderr]      |
[INFO] [stderr] 3064 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3133:59
[INFO] [stderr]      |
[INFO] [stderr] 3133 |     fn serialize(&self, record: &Record, serializer: &mut Serializer)
[INFO] [stderr]      |                                                           ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3144:26
[INFO] [stderr]      |
[INFO] [stderr] 3144 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3204:26
[INFO] [stderr]      |
[INFO] [stderr] 3204 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3214:27
[INFO] [stderr]      |
[INFO] [stderr] 3214 |         _serializer: &mut Serializer,
[INFO] [stderr]      |                           ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3224:26
[INFO] [stderr]      |
[INFO] [stderr] 3224 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3238:26
[INFO] [stderr]      |
[INFO] [stderr] 3238 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3251:26
[INFO] [stderr]      |
[INFO] [stderr] 3251 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3264:26
[INFO] [stderr]      |
[INFO] [stderr] 3264 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3274:26
[INFO] [stderr]      |
[INFO] [stderr] 3274 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3316:13
[INFO] [stderr]      |
[INFO] [stderr] 3316 |     pub &'a KV,
[INFO] [stderr]      |             ^^ help: use `dyn`: `dyn KV`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3326:20
[INFO] [stderr]      |
[INFO] [stderr] 3326 |     next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3331:20
[INFO] [stderr]      |
[INFO] [stderr] 3331 |     next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3332:15
[INFO] [stderr]      |
[INFO] [stderr] 3332 |     node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3338:15
[INFO] [stderr]      |
[INFO] [stderr] 3338 |     node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3348:26
[INFO] [stderr]      |
[INFO] [stderr] 3348 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3361:26
[INFO] [stderr]      |
[INFO] [stderr] 3361 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3374:26
[INFO] [stderr]      |
[INFO] [stderr] 3374 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3435:24
[INFO] [stderr]      |
[INFO] [stderr] 3435 |         next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3524:32
[INFO] [stderr]      |
[INFO] [stderr] 3524 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stderr]      |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3613:22
[INFO] [stderr]      |
[INFO] [stderr] 3613 | pub type Serialize = Value;
[INFO] [stderr]      |                      ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tests.rs:162:35
[INFO] [stderr]     |
[INFO] [stderr] 162 |                 _serializer: &mut Serializer,
[INFO] [stderr]     |                                   ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:1251:9
[INFO] [stderr]      |
[INFO] [stderr] 1251 |         try!(write!(f, "Logger{:?}", self.list));
[INFO] [stderr]      |         ^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3226:9
[INFO] [stderr]      |
[INFO] [stderr] 3226 |         try!(self.0.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3350:9
[INFO] [stderr]      |
[INFO] [stderr] 3350 |         try!(self.kv.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3351:9
[INFO] [stderr]      |
[INFO] [stderr] 3351 |         try!(self.next_node.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3363:9
[INFO] [stderr]      |
[INFO] [stderr] 3363 |         try!(self.next_node.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3364:9
[INFO] [stderr]      |
[INFO] [stderr] 3364 |         try!(self.node.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3376:9
[INFO] [stderr]      |
[INFO] [stderr] 3376 |         try!(self.node.serialize(record, serializer));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3384:9
[INFO] [stderr]      |
[INFO] [stderr] 3384 |         try!(write!(f, "("));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3390:21
[INFO] [stderr]      |
[INFO] [stderr] 3390 |                     try!(write!(f, ", "));
[INFO] [stderr]      |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3393:17
[INFO] [stderr]      |
[INFO] [stderr] 3393 |                 try!(write!(f, "{}", key));
[INFO] [stderr]      |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3399:13
[INFO] [stderr]      |
[INFO] [stderr] 3399 |             try!(
[INFO] [stderr]      |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/lib.rs:3413:9
[INFO] [stderr]      |
[INFO] [stderr] 3413 |         try!(write!(f, ")"));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1079:27
[INFO] [stderr]      |
[INFO] [stderr] 1079 | pub struct Logger<D = Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
[INFO] [stderr]      |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1124:24
[INFO] [stderr]      |
[INFO] [stderr] 1124 |                 as Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1222:21
[INFO] [stderr]      |
[INFO] [stderr] 1222 |     ) -> Logger<Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
[INFO] [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1228:24
[INFO] [stderr]      |
[INFO] [stderr] 1228 |                 as Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1238:21
[INFO] [stderr]      |
[INFO] [stderr] 1238 |     ) -> Logger<Arc<SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>>>
[INFO] [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeDrain<Ok = (), Err = Never>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1807:17
[INFO] [stderr]      |
[INFO] [stderr] 1807 |     map_fn: Box<MapErrFn<D::Err, E, Output = E>>,
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MapErrFn<D::Err, E, Output = E>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:1995:32
[INFO] [stderr]      |
[INFO] [stderr] 1995 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stderr]      |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2768:26
[INFO] [stderr]      |
[INFO] [stderr] 2768 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2780:26
[INFO] [stderr]      |
[INFO] [stderr] 2780 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2800 | impl_value_for!(usize, emit_usize);
[INFO] [stderr]      | ----------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2801 | impl_value_for!(isize, emit_isize);
[INFO] [stderr]      | ----------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2802 | impl_value_for!(bool, emit_bool);
[INFO] [stderr]      | --------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2803 | impl_value_for!(char, emit_char);
[INFO] [stderr]      | --------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2804 | impl_value_for!(u8, emit_u8);
[INFO] [stderr]      | ----------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2805 | impl_value_for!(i8, emit_i8);
[INFO] [stderr]      | ----------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2806 | impl_value_for!(u16, emit_u16);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2807 | impl_value_for!(i16, emit_i16);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2808 | impl_value_for!(u32, emit_u32);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2809 | impl_value_for!(i32, emit_i32);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2810 | impl_value_for!(f32, emit_f32);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2811 | impl_value_for!(u64, emit_u64);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2812 | impl_value_for!(i64, emit_i64);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2813 | impl_value_for!(f64, emit_f64);
[INFO] [stderr]      | ------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2815 | impl_value_for!(u128, emit_u128);
[INFO] [stderr]      | --------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2792:44
[INFO] [stderr]      |
[INFO] [stderr] 2792 |                          serializer : &mut Serializer
[INFO] [stderr]      |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] ...
[INFO] [stderr] 2817 | impl_value_for!(i128, emit_i128);
[INFO] [stderr]      | --------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2824:26
[INFO] [stderr]      |
[INFO] [stderr] 2824 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2835:26
[INFO] [stderr]      |
[INFO] [stderr] 2835 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2846:26
[INFO] [stderr]      |
[INFO] [stderr] 2846 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2857:26
[INFO] [stderr]      |
[INFO] [stderr] 2857 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2868:26
[INFO] [stderr]      |
[INFO] [stderr] 2868 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2885:26
[INFO] [stderr]      |
[INFO] [stderr] 2885 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2898:26
[INFO] [stderr]      |
[INFO] [stderr] 2898 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2912:26
[INFO] [stderr]      |
[INFO] [stderr] 2912 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2926:26
[INFO] [stderr]      |
[INFO] [stderr] 2926 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2938:26
[INFO] [stderr]      |
[INFO] [stderr] 2938 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2950:26
[INFO] [stderr]      |
[INFO] [stderr] 2950 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2969:26
[INFO] [stderr]      |
[INFO] [stderr] 2969 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2986:25
[INFO] [stderr]      |
[INFO] [stderr] 2986 |     serializer: &'a mut Serializer,
[INFO] [stderr]      |                         ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3064:26
[INFO] [stderr]      |
[INFO] [stderr] 3064 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3133:59
[INFO] [stderr]      |
[INFO] [stderr] 3133 |     fn serialize(&self, record: &Record, serializer: &mut Serializer)
[INFO] [stderr]      |                                                           ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3144:26
[INFO] [stderr]      |
[INFO] [stderr] 3144 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3204:26
[INFO] [stderr]      |
[INFO] [stderr] 3204 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3214:27
[INFO] [stderr]      |
[INFO] [stderr] 3214 |         _serializer: &mut Serializer,
[INFO] [stderr]      |                           ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3224:26
[INFO] [stderr]      |
[INFO] [stderr] 3224 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3238:26
[INFO] [stderr]      |
[INFO] [stderr] 3238 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3251:26
[INFO] [stderr]      |
[INFO] [stderr] 3251 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3264:26
[INFO] [stderr]      |
[INFO] [stderr] 3264 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3274:26
[INFO] [stderr]      |
[INFO] [stderr] 3274 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3316:13
[INFO] [stderr]      |
[INFO] [stderr] 3316 |     pub &'a KV,
[INFO] [stderr]      |             ^^ help: use `dyn`: `dyn KV`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3326:20
[INFO] [stderr]      |
[INFO] [stderr] 3326 |     next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3331:20
[INFO] [stderr]      |
[INFO] [stderr] 3331 |     next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3332:15
[INFO] [stderr]      |
[INFO] [stderr] 3332 |     node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3338:15
[INFO] [stderr]      |
[INFO] [stderr] 3338 |     node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3348:26
[INFO] [stderr]      |
[INFO] [stderr] 3348 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3361:26
[INFO] [stderr]      |
[INFO] [stderr] 3361 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3374:26
[INFO] [stderr]      |
[INFO] [stderr] 3374 |         serializer: &mut Serializer,
[INFO] [stderr]      |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3435:24
[INFO] [stderr]      |
[INFO] [stderr] 3435 |         next_node: Arc<SendSyncRefUnwindSafeKV + 'static>,
[INFO] [stderr]      |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SendSyncRefUnwindSafeKV + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3524:32
[INFO] [stderr]      |
[INFO] [stderr] 3524 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stderr]      |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:3613:22
[INFO] [stderr]      |
[INFO] [stderr] 3613 | pub type Serialize = Value;
[INFO] [stderr]      |                      ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]     --> src/lib.rs:1991:48
[INFO] [stderr]      |
[INFO] [stderr] 1991 |             MutexDrainError::Drain(ref e) => e.description(),
[INFO] [stderr]      |                                                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]     --> src/lib.rs:1991:48
[INFO] [stderr]      |
[INFO] [stderr] 1991 |             MutexDrainError::Drain(ref e) => e.description(),
[INFO] [stderr]      |                                                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]     --> src/lib.rs:3518:35
[INFO] [stderr]      |
[INFO] [stderr] 3518 |             Error::Io(ref e) => e.description(),
[INFO] [stderr]      |                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]     --> src/lib.rs:3518:35
[INFO] [stderr]      |
[INFO] [stderr] 3518 |             Error::Io(ref e) => e.description(),
[INFO] [stderr]      |                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/tests.rs:183:13
[INFO] [stderr]     |
[INFO] [stderr] 183 |           { 3 + 3; 2};
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/tests.rs:185:22
[INFO] [stderr]     |
[INFO] [stderr] 185 |           "foo" => { 3 + 3; 2},
[INFO] [stderr]     |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> examples/struct-log-self.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[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]   --> examples/struct-log-self.rs:25:60
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn serialize(&self, _record: &Record, serializer: &mut Serializer) -> Result {
[INFO] [stderr]    |                                                            ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `"docker" "inspect" "09aef2d27156a34e9a39c2232dc76c1dc8ebdff4edf3a23a0788d75a468d1a8a"`
[INFO] running `"docker" "rm" "-f" "09aef2d27156a34e9a39c2232dc76c1dc8ebdff4edf3a23a0788d75a468d1a8a"`
[INFO] [stdout] 09aef2d27156a34e9a39c2232dc76c1dc8ebdff4edf3a23a0788d75a468d1a8a
