[INFO] fetching crate tokio-trace-core 0.2.0...
[INFO] building tokio-trace-core-0.2.0 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate tokio-trace-core 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tokio-trace-core 0.2.0 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-trace-core 0.2.0
[INFO] finished tweaking crates.io crate tokio-trace-core 0.2.0
[INFO] tweaked toml for crates.io crate tokio-trace-core 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64f2d4540d00010b8400e3790b526e27ccc379b30aafa072f6556db6c895e5df
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "64f2d4540d00010b8400e3790b526e27ccc379b30aafa072f6556db6c895e5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64f2d4540d00010b8400e3790b526e27ccc379b30aafa072f6556db6c895e5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f2d4540d00010b8400e3790b526e27ccc379b30aafa072f6556db6c895e5df", kill_on_drop: false }`
[INFO] [stdout] 64f2d4540d00010b8400e3790b526e27ccc379b30aafa072f6556db6c895e5df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3b1580314dc2852300ca113073ad8f5ee56b75a756c33acc0e69664ade20ca2d
[INFO] running `Command { std: "docker" "start" "-a" "3b1580314dc2852300ca113073ad8f5ee56b75a756c33acc0e69664ade20ca2d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling tokio-trace-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:23:29
[INFO] [stdout]    |
[INFO] [stdout] 23 |     callsites: Vec<&'static Callsite>,
[INFO] [stdout]    |                             ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:28:60
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn rebuild_callsite_interest(&self, callsite: &'static Callsite) {
[INFO] [stdout]    |                                                            ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub &'static Callsite,
[INFO] [stdout]    |                  ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/callsite.rs:107:36
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn register(callsite: &'static Callsite) {
[INFO] [stdout]     |                                    ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/callsite.rs:140:27
[INFO] [stdout]     |
[INFO] [stdout] 140 |         (self.0 as *const Callsite).hash(state)
[INFO] [stdout]     |                           ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/dispatcher.rs:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |     subscriber: Arc<Subscriber + Send + Sync>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Subscriber + Send + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:100:34
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub(crate) struct Registrar(Weak<Subscriber + Send + Sync>);
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Subscriber + Send + Sync`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event.rs:41:40
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 |     values: &'a [(&'a Field, Option<&'a (Value + 'a)>)],
[INFO] [stdout]    |                                          ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:209:55
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug);
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:221:49
[INFO] [stdout]     |
[INFO] [stdout] 221 |     fn record(&self, key: &Field, visitor: &mut Visit);
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:253:55
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:259:55
[INFO] [stdout]     |
[INFO] [stdout] 259 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:266:23
[INFO] [stdout]     |
[INFO] [stdout] 266 |     F: FnMut(&Field, &fmt::Debug),
[INFO] [stdout]     |                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:268:55
[INFO] [stdout]     |
[INFO] [stdout] 268 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:304:35
[INFO] [stdout]     |
[INFO] [stdout] 304 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:304:35
[INFO] [stdout]     |
[INFO] [stdout] 304 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:326:49
[INFO] [stdout]     |
[INFO] [stdout] 326 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:337:49
[INFO] [stdout]     |
[INFO] [stdout] 337 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:345:49
[INFO] [stdout]     |
[INFO] [stdout] 345 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:358:49
[INFO] [stdout]     |
[INFO] [stdout] 358 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:377:49
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:581:47
[INFO] [stdout]     |
[INFO] [stdout] 581 |     pub(crate) fn record(&self, visitor: &mut Visit) {
[INFO] [stdout]     |                                               ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:656:61
[INFO] [stdout]     |
[INFO] [stdout] 656 |     pub trait ValidLen<'a>: Borrow<[(&'a Field, Option<&'a (Value + 'a)>)]> {}
[INFO] [stdout]     |                                                             ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:663:42
[INFO] [stdout]     |
[INFO] [stdout] 663 |                   [(&'a Field, Option<&'a (Value + 'a)>); $len] {}
[INFO] [stdout]     |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout] ...
[INFO] [stdout] 668 | / impl_valid_len! {
[INFO] [stdout] 669 | |     0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
[INFO] [stdout] 670 | |     21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32
[INFO] [stdout] 671 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/metadata.rs:160:28
[INFO] [stdout]     |
[INFO] [stdout] 160 |         callsite: &'static Callsite,
[INFO] [stdout]     |                            ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/span.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/span.rs:175:40
[INFO] [stdout]     |
[INFO] [stdout] 175 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/subscriber.rs:355:6
[INFO] [stdout]     |
[INFO] [stdout] 355 | impl Subscriber {
[INFO] [stdout]     |      ^^^^^^^^^^ help: use `dyn`: `dyn Subscriber`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |         Subscriber::is::<T>(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:274:9
[INFO] [stdout]     |
[INFO] [stdout] 274 |         Subscriber::downcast_ref(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "3b1580314dc2852300ca113073ad8f5ee56b75a756c33acc0e69664ade20ca2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b1580314dc2852300ca113073ad8f5ee56b75a756c33acc0e69664ade20ca2d", kill_on_drop: false }`
[INFO] [stdout] 3b1580314dc2852300ca113073ad8f5ee56b75a756c33acc0e69664ade20ca2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec3279d16839b7a6b9d18e2115ae69f6dce3511267303f2301cb6accb67c2f66
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ec3279d16839b7a6b9d18e2115ae69f6dce3511267303f2301cb6accb67c2f66", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:23:29
[INFO] [stdout]    |
[INFO] [stdout] 23 |     callsites: Vec<&'static Callsite>,
[INFO] [stdout]    |                             ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:28:60
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn rebuild_callsite_interest(&self, callsite: &'static Callsite) {
[INFO] [stdout]    |                                                            ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub &'static Callsite,
[INFO] [stdout]    |                  ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/callsite.rs:107:36
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn register(callsite: &'static Callsite) {
[INFO] [stdout]     |                                    ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/callsite.rs:140:27
[INFO] [stdout]     |
[INFO] [stdout] 140 |         (self.0 as *const Callsite).hash(state)
[INFO] [stdout]     |                           ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/dispatcher.rs:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |     subscriber: Arc<Subscriber + Send + Sync>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Subscriber + Send + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:100:34
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub(crate) struct Registrar(Weak<Subscriber + Send + Sync>);
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Subscriber + Send + Sync`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event.rs:41:40
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 |     values: &'a [(&'a Field, Option<&'a (Value + 'a)>)],
[INFO] [stdout]    |                                          ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:209:55
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug);
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:221:49
[INFO] [stdout]     |
[INFO] [stdout] 221 |     fn record(&self, key: &Field, visitor: &mut Visit);
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:253:55
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:259:55
[INFO] [stdout]     |
[INFO] [stdout] 259 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:266:23
[INFO] [stdout]     |
[INFO] [stdout] 266 |     F: FnMut(&Field, &fmt::Debug),
[INFO] [stdout]     |                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:268:55
[INFO] [stdout]     |
[INFO] [stdout] 268 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:304:35
[INFO] [stdout]     |
[INFO] [stdout] 304 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:304:35
[INFO] [stdout]     |
[INFO] [stdout] 304 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:326:49
[INFO] [stdout]     |
[INFO] [stdout] 326 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:337:49
[INFO] [stdout]     |
[INFO] [stdout] 337 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:345:49
[INFO] [stdout]     |
[INFO] [stdout] 345 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:358:49
[INFO] [stdout]     |
[INFO] [stdout] 358 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:377:49
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:581:47
[INFO] [stdout]     |
[INFO] [stdout] 581 |     pub(crate) fn record(&self, visitor: &mut Visit) {
[INFO] [stdout]     |                                               ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:656:61
[INFO] [stdout]     |
[INFO] [stdout] 656 |     pub trait ValidLen<'a>: Borrow<[(&'a Field, Option<&'a (Value + 'a)>)]> {}
[INFO] [stdout]     |                                                             ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:663:42
[INFO] [stdout]     |
[INFO] [stdout] 663 |                   [(&'a Field, Option<&'a (Value + 'a)>); $len] {}
[INFO] [stdout]     |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout] ...
[INFO] [stdout] 668 | / impl_valid_len! {
[INFO] [stdout] 669 | |     0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
[INFO] [stdout] 670 | |     21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32
[INFO] [stdout] 671 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/metadata.rs:160:28
[INFO] [stdout]     |
[INFO] [stdout] 160 |         callsite: &'static Callsite,
[INFO] [stdout]     |                            ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/span.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/span.rs:175:40
[INFO] [stdout]     |
[INFO] [stdout] 175 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/subscriber.rs:355:6
[INFO] [stdout]     |
[INFO] [stdout] 355 | impl Subscriber {
[INFO] [stdout]     |      ^^^^^^^^^^ help: use `dyn`: `dyn Subscriber`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |         Subscriber::is::<T>(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:274:9
[INFO] [stdout]     |
[INFO] [stdout] 274 |         Subscriber::downcast_ref(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio-trace-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:23:29
[INFO] [stdout]    |
[INFO] [stdout] 23 |     callsites: Vec<&'static Callsite>,
[INFO] [stdout]    |                             ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:24
[INFO] [stdout]    |
[INFO] [stdout] 3  | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:28:60
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn rebuild_callsite_interest(&self, callsite: &'static Callsite) {
[INFO] [stdout]    |                                                            ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/callsite.rs:83:18
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub &'static Callsite,
[INFO] [stdout]    |                  ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/callsite.rs:107:36
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn register(callsite: &'static Callsite) {
[INFO] [stdout]     |                                    ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/callsite.rs:140:27
[INFO] [stdout]     |
[INFO] [stdout] 140 |         (self.0 as *const Callsite).hash(state)
[INFO] [stdout]     |                           ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/dispatcher.rs:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |     subscriber: Arc<Subscriber + Send + Sync>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Subscriber + Send + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:100:34
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub(crate) struct Registrar(Weak<Subscriber + Send + Sync>);
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Subscriber + Send + Sync`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/event.rs:41:40
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:89:42
[INFO] [stdout]    |
[INFO] [stdout] 89 |     values: &'a [(&'a Field, Option<&'a (Value + 'a)>)],
[INFO] [stdout]    |                                          ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:209:55
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug);
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:221:49
[INFO] [stdout]     |
[INFO] [stdout] 221 |     fn record(&self, key: &Field, visitor: &mut Visit);
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:253:55
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:259:55
[INFO] [stdout]     |
[INFO] [stdout] 259 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:266:23
[INFO] [stdout]     |
[INFO] [stdout] 266 |     F: FnMut(&Field, &fmt::Debug),
[INFO] [stdout]     |                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:268:55
[INFO] [stdout]     |
[INFO] [stdout] 268 |     fn record_debug(&mut self, field: &Field, value: &fmt::Debug) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:304:35
[INFO] [stdout]     |
[INFO] [stdout] 304 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:304:35
[INFO] [stdout]     |
[INFO] [stdout] 304 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:290:35
[INFO] [stdout]     |
[INFO] [stdout] 290 |                       visitor: &mut $crate::field::Visit,
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn $crate::field::Visit`
[INFO] [stdout] ...
[INFO] [stdout] 315 | / impl_values! {
[INFO] [stdout] 316 | |     record_u64(u64),
[INFO] [stdout] 317 | |     record_u64(usize, u32, u16 as u64),
[INFO] [stdout] 318 | |     record_i64(i64),
[INFO] [stdout] 319 | |     record_i64(isize, i32, i16, i8 as i64),
[INFO] [stdout] 320 | |     record_bool(bool)
[INFO] [stdout] 321 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:326:49
[INFO] [stdout]     |
[INFO] [stdout] 326 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:337:49
[INFO] [stdout]     |
[INFO] [stdout] 337 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:345:49
[INFO] [stdout]     |
[INFO] [stdout] 345 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:358:49
[INFO] [stdout]     |
[INFO] [stdout] 358 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:377:49
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn record(&self, key: &Field, visitor: &mut Visit) {
[INFO] [stdout]     |                                                 ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:581:47
[INFO] [stdout]     |
[INFO] [stdout] 581 |     pub(crate) fn record(&self, visitor: &mut Visit) {
[INFO] [stdout]     |                                               ^^^^^ help: use `dyn`: `dyn Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:656:61
[INFO] [stdout]     |
[INFO] [stdout] 656 |     pub trait ValidLen<'a>: Borrow<[(&'a Field, Option<&'a (Value + 'a)>)]> {}
[INFO] [stdout]     |                                                             ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:663:42
[INFO] [stdout]     |
[INFO] [stdout] 663 |                   [(&'a Field, Option<&'a (Value + 'a)>); $len] {}
[INFO] [stdout]     |                                            ^^^^^^^^^^ help: use `dyn`: `dyn Value + 'a`
[INFO] [stdout] ...
[INFO] [stdout] 668 | / impl_valid_len! {
[INFO] [stdout] 669 | |     0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
[INFO] [stdout] 670 | |     21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32
[INFO] [stdout] 671 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:743:57
[INFO] [stdout]     |
[INFO] [stdout] 743 |             (&fields.field("foo").unwrap(), Some(&1 as &Value)),
[INFO] [stdout]     |                                                         ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:744:57
[INFO] [stdout]     |
[INFO] [stdout] 744 |             (&fields.field("bar").unwrap(), Some(&2 as &Value)),
[INFO] [stdout]     |                                                         ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:745:57
[INFO] [stdout]     |
[INFO] [stdout] 745 |             (&fields.field("baz").unwrap(), Some(&3 as &Value)),
[INFO] [stdout]     |                                                         ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:756:58
[INFO] [stdout]     |
[INFO] [stdout] 756 |             (&fields.field("bar").unwrap(), Some(&57 as &Value)),
[INFO] [stdout]     |                                                          ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:770:30
[INFO] [stdout]     |
[INFO] [stdout] 770 |                 Some(&57 as &Value),
[INFO] [stdout]     |                              ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:777:59
[INFO] [stdout]     |
[INFO] [stdout] 777 |             fn record_debug(&mut self, field: &Field, _: &::std::fmt::Debug) {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::fmt::Debug)`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:789:57
[INFO] [stdout]     |
[INFO] [stdout] 789 |             (&fields.field("foo").unwrap(), Some(&1 as &Value)),
[INFO] [stdout]     |                                                         ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:790:57
[INFO] [stdout]     |
[INFO] [stdout] 790 |             (&fields.field("bar").unwrap(), Some(&2 as &Value)),
[INFO] [stdout]     |                                                         ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:791:57
[INFO] [stdout]     |
[INFO] [stdout] 791 |             (&fields.field("baz").unwrap(), Some(&3 as &Value)),
[INFO] [stdout]     |                                                         ^^^^^ help: use `dyn`: `dyn Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/field.rs:795:50
[INFO] [stdout]     |
[INFO] [stdout] 795 |         valueset.record(&mut |_: &Field, value: &fmt::Debug| {
[INFO] [stdout]     |                                                  ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/metadata.rs:160:28
[INFO] [stdout]     |
[INFO] [stdout] 160 |         callsite: &'static Callsite,
[INFO] [stdout]     |                            ^^^^^^^^ help: use `dyn`: `dyn Callsite`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/span.rs:148:40
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/span.rs:175:40
[INFO] [stdout]     |
[INFO] [stdout] 175 |     pub fn record(&self, visitor: &mut field::Visit) {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn field::Visit`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/subscriber.rs:355:6
[INFO] [stdout]     |
[INFO] [stdout] 355 | impl Subscriber {
[INFO] [stdout]     |      ^^^^^^^^^^ help: use `dyn`: `dyn Subscriber`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |         Subscriber::is::<T>(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/dispatcher.rs:274:9
[INFO] [stdout]     |
[INFO] [stdout] 274 |         Subscriber::downcast_ref(&*self.subscriber)
[INFO] [stdout]     |         ^^^^^^^^^^ help: use `dyn`: `<dyn Subscriber>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-trace-core`
[INFO] [stdout] error: aborting due to 44 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ec3279d16839b7a6b9d18e2115ae69f6dce3511267303f2301cb6accb67c2f66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec3279d16839b7a6b9d18e2115ae69f6dce3511267303f2301cb6accb67c2f66", kill_on_drop: false }`
[INFO] [stdout] ec3279d16839b7a6b9d18e2115ae69f6dce3511267303f2301cb6accb67c2f66
