[INFO] fetching crate genet-abi 0.5.0...
[INFO] testing genet-abi-0.5.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate genet-abi 0.5.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate genet-abi 0.5.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate genet-abi 0.5.0
[INFO] finished tweaking crates.io crate genet-abi 0.5.0
[INFO] tweaked toml for crates.io crate genet-abi 0.5.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", 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] 474f5e1472bfe72f813727e31019ccf8620463a7d439f628edc35f9bf7dfa372
[INFO] running `Command { std: "docker" "start" "-a" "474f5e1472bfe72f813727e31019ccf8620463a7d439f628edc35f9bf7dfa372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "474f5e1472bfe72f813727e31019ccf8620463a7d439f628edc35f9bf7dfa372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "474f5e1472bfe72f813727e31019ccf8620463a7d439f628edc35f9bf7dfa372", kill_on_drop: false }`
[INFO] [stdout] 474f5e1472bfe72f813727e31019ccf8620463a7d439f628edc35f9bf7dfa372
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 97b425ca1151aaa9b684fd79d2381f5863c9b8ae1285b971764b3b22a0933307
[INFO] running `Command { std: "docker" "start" "-a" "97b425ca1151aaa9b684fd79d2381f5863c9b8ae1285b971764b3b22a0933307", kill_on_drop: false }`
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling genet-abi v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/cast.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn cast(&self, &slice::ByteSlice) -> Result<Variant>;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &slice::ByteSlice`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:26
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &LayerStack`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:53
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                                                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Parent`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:95:26
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout]    |                          ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/attr.rs:360:61
[INFO] [stdout]     |
[INFO] [stdout] 360 |             unsafe { *err = Error::new(::std::error::Error::description(&*e)) }
[INFO] [stdout]     |                                                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/attr.rs:213:26
[INFO] [stdout]     |
[INFO] [stdout] 213 |             start = mem::uninitialized();
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/attr.rs:214:24
[INFO] [stdout]     |
[INFO] [stdout] 214 |             end = mem::uninitialized();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |         write!(f, "Error: {}", error::Error::description(self))
[INFO] [stdout]    |                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 |         write!(f, "{}", error::Error::description(self))
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/io.rs:47:54
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut out: WriterWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/io.rs:120:54
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut out: ReaderWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/attr.rs:134:22
[INFO] [stdout]     |
[INFO] [stdout] 134 |     cast: Option<Box<Cast>>,
[INFO] [stdout]     |                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 134 -     cast: Option<Box<Cast>>,
[INFO] [stdout] 134 +     cast: Option<Box<dyn Cast>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/attr.rs:184:22
[INFO] [stdout]     |
[INFO] [stdout] 184 |     cast: Option<Box<Cast>>,
[INFO] [stdout]     |                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 -     cast: Option<Box<Cast>>,
[INFO] [stdout] 184 +     cast: Option<Box<dyn Cast>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |     worker: *mut Box<Worker>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 -     worker: *mut Box<Worker>,
[INFO] [stdout] 39 +     worker: *mut Box<dyn Worker>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:175:22
[INFO] [stdout]     |
[INFO] [stdout] 175 |     worker: *mut Box<WriterWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -     worker: *mut Box<WriterWorker>,
[INFO] [stdout] 175 +     worker: *mut Box<dyn WriterWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:170:28
[INFO] [stdout]     |
[INFO] [stdout] 170 |     extern "C" fn(*mut Box<WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -     extern "C" fn(*mut Box<WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout] 170 +     extern "C" fn(*mut Box<dyn WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:172:45
[INFO] [stdout]     |
[INFO] [stdout] 172 | type WriterEndFunc = extern "C" fn(*mut Box<WriterWorker>, *mut Error) -> u8;
[INFO] [stdout]     |                                             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 172 - type WriterEndFunc = extern "C" fn(*mut Box<WriterWorker>, *mut Error) -> u8;
[INFO] [stdout] 172 + type WriterEndFunc = extern "C" fn(*mut Box<dyn WriterWorker>, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:178:34
[INFO] [stdout]     |
[INFO] [stdout] 178 |     drop: extern "C" fn(*mut Box<WriterWorker>),
[INFO] [stdout]     |                                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 178 -     drop: extern "C" fn(*mut Box<WriterWorker>),
[INFO] [stdout] 178 +     drop: extern "C" fn(*mut Box<dyn WriterWorker>),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:229:22
[INFO] [stdout]     |
[INFO] [stdout] 229 |     worker: *mut Box<ReaderWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 229 -     worker: *mut Box<ReaderWorker>,
[INFO] [stdout] 229 +     worker: *mut Box<dyn ReaderWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:226:28
[INFO] [stdout]     |
[INFO] [stdout] 226 |     extern "C" fn(*mut Box<ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 226 -     extern "C" fn(*mut Box<ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout] 226 +     extern "C" fn(*mut Box<dyn ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:231:34
[INFO] [stdout]     |
[INFO] [stdout] 231 |     drop: extern "C" fn(*mut Box<ReaderWorker>),
[INFO] [stdout]     |                                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 231 -     drop: extern "C" fn(*mut Box<ReaderWorker>),
[INFO] [stdout] 231 +     drop: extern "C" fn(*mut Box<dyn ReaderWorker>),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:128:23
[INFO] [stdout]     |
[INFO] [stdout] 128 |     decoder: *mut Box<Decoder>,
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 -     decoder: *mut Box<Decoder>,
[INFO] [stdout] 128 +     decoder: *mut Box<dyn Decoder>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:19:22
[INFO] [stdout]    |
[INFO] [stdout] 19 |     writer: *mut Box<Writer>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 -     writer: *mut Box<Writer>,
[INFO] [stdout] 19 +     writer: *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:20:32
[INFO] [stdout]    |
[INFO] [stdout] 20 |     id: extern "C" fn(*mut Box<Writer>) -> SafeString,
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 -     id: extern "C" fn(*mut Box<Writer>) -> SafeString,
[INFO] [stdout] 20 +     id: extern "C" fn(*mut Box<dyn Writer>) -> SafeString,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:22:18
[INFO] [stdout]    |
[INFO] [stdout] 22 |         *mut Box<Writer>,
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 -         *mut Box<Writer>,
[INFO] [stdout] 22 +         *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:92:22
[INFO] [stdout]    |
[INFO] [stdout] 92 |     reader: *mut Box<Reader>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     reader: *mut Box<Reader>,
[INFO] [stdout] 92 +     reader: *mut Box<dyn Reader>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:93:32
[INFO] [stdout]    |
[INFO] [stdout] 93 |     id: extern "C" fn(*mut Box<Reader>) -> SafeString,
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 93 -     id: extern "C" fn(*mut Box<Reader>) -> SafeString,
[INFO] [stdout] 93 +     id: extern "C" fn(*mut Box<dyn Reader>) -> SafeString,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:95:18
[INFO] [stdout]    |
[INFO] [stdout] 95 |         *mut Box<Reader>,
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 95 -         *mut Box<Reader>,
[INFO] [stdout] 95 +         *mut Box<dyn Reader>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/result.rs:4:44
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stdout]   |                                            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 - pub type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stdout] 4 + pub type Result<T> = result::Result<T, Box<dyn Error>>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:32:20
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Clone for Box<Cast> {
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 - impl Clone for Box<Cast> {
[INFO] [stdout] 32 + impl Clone for Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn clone_box(&self) -> Box<Cast>;
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 -     fn clone_box(&self) -> Box<Cast>;
[INFO] [stdout] 15 +     fn clone_box(&self) -> Box<dyn Cast>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:16:30
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn into_box(self) -> Box<Cast>;
[INFO] [stdout]    |                              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     fn into_box(self) -> Box<Cast>;
[INFO] [stdout] 16 +     fn into_box(self) -> Box<dyn Cast>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn clone_box(&self) -> Box<Cast> {
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 -     fn clone_box(&self) -> Box<Cast> {
[INFO] [stdout] 23 +     fn clone_box(&self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:27:30
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn into_box(self) -> Box<Cast> {
[INFO] [stdout]    |                              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 -     fn into_box(self) -> Box<Cast> {
[INFO] [stdout] 27 +     fn into_box(self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn clone(&self) -> Box<Cast> {
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 -     fn clone(&self) -> Box<Cast> {
[INFO] [stdout] 33 +     fn clone(&self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl Clone for Box<Decoder> {
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 117 - impl Clone for Box<Decoder> {
[INFO] [stdout] 117 + impl Clone for Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:95:43
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout]    |                                           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 95 -     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout] 95 +     fn new_worker(&self, &Context) -> Box<dyn Worker>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:100:32
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn clone_box(&self) -> Box<Decoder>;
[INFO] [stdout]     |                                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     fn clone_box(&self) -> Box<Decoder>;
[INFO] [stdout] 100 +     fn clone_box(&self) -> Box<dyn Decoder>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:101:30
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn into_box(self) -> Box<Decoder>;
[INFO] [stdout]     |                              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 101 -     fn into_box(self) -> Box<Decoder>;
[INFO] [stdout] 101 +     fn into_box(self) -> Box<dyn Decoder>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn new(worker: Box<Worker>) -> WorkerBox {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 43 -     fn new(worker: Box<Worker>) -> WorkerBox {
[INFO] [stdout] 43 +     fn new(worker: Box<dyn Worker>) -> WorkerBox {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:108:32
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn clone_box(&self) -> Box<Decoder> {
[INFO] [stdout]     |                                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 -     fn clone_box(&self) -> Box<Decoder> {
[INFO] [stdout] 108 +     fn clone_box(&self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:112:30
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn into_box(self) -> Box<Decoder> {
[INFO] [stdout]     |                              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 112 -     fn into_box(self) -> Box<Decoder> {
[INFO] [stdout] 112 +     fn into_box(self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:118:28
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn clone(&self) -> Box<Decoder> {
[INFO] [stdout]     |                            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -     fn clone(&self) -> Box<Decoder> {
[INFO] [stdout] 118 +     fn clone(&self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:58:46
[INFO] [stdout]    |
[INFO] [stdout] 58 | extern "C" fn abi_writer_id(writer: *mut Box<Writer>) -> SafeString {
[INFO] [stdout]    |                                              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 58 - extern "C" fn abi_writer_id(writer: *mut Box<Writer>) -> SafeString {
[INFO] [stdout] 58 + extern "C" fn abi_writer_id(writer: *mut Box<dyn Writer>) -> SafeString {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:63:22
[INFO] [stdout]    |
[INFO] [stdout] 63 |     writer: *mut Box<Writer>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     writer: *mut Box<Writer>,
[INFO] [stdout] 63 +     writer: *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:131:46
[INFO] [stdout]     |
[INFO] [stdout] 131 | extern "C" fn abi_reader_id(reader: *mut Box<Reader>) -> SafeString {
[INFO] [stdout]     |                                              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 131 - extern "C" fn abi_reader_id(reader: *mut Box<Reader>) -> SafeString {
[INFO] [stdout] 131 + extern "C" fn abi_reader_id(reader: *mut Box<dyn Reader>) -> SafeString {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:136:22
[INFO] [stdout]     |
[INFO] [stdout] 136 |     reader: *mut Box<Reader>,
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 136 -     reader: *mut Box<Reader>,
[INFO] [stdout] 136 +     reader: *mut Box<dyn Reader>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:268:55
[INFO] [stdout]     |
[INFO] [stdout] 268 | extern "C" fn abi_writer_worker_drop(worker: *mut Box<WriterWorker>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 268 - extern "C" fn abi_writer_worker_drop(worker: *mut Box<WriterWorker>) {
[INFO] [stdout] 268 + extern "C" fn abi_writer_worker_drop(worker: *mut Box<dyn WriterWorker>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:272:55
[INFO] [stdout]     |
[INFO] [stdout] 272 | extern "C" fn abi_reader_worker_drop(worker: *mut Box<ReaderWorker>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 272 - extern "C" fn abi_reader_worker_drop(worker: *mut Box<ReaderWorker>) {
[INFO] [stdout] 272 + extern "C" fn abi_reader_worker_drop(worker: *mut Box<dyn ReaderWorker>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:277:22
[INFO] [stdout]     |
[INFO] [stdout] 277 |     worker: *mut Box<WriterWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 277 -     worker: *mut Box<WriterWorker>,
[INFO] [stdout] 277 +     worker: *mut Box<dyn WriterWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:294:54
[INFO] [stdout]     |
[INFO] [stdout] 294 | extern "C" fn abi_writer_worker_end(worker: *mut Box<WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 294 - extern "C" fn abi_writer_worker_end(worker: *mut Box<WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout] 294 + extern "C" fn abi_writer_worker_end(worker: *mut Box<dyn WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:306:22
[INFO] [stdout]     |
[INFO] [stdout] 306 |     worker: *mut Box<ReaderWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 306 -     worker: *mut Box<ReaderWorker>,
[INFO] [stdout] 306 +     worker: *mut Box<dyn ReaderWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:12:67
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<WriterWorker>>;
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<WriterWorker>>;
[INFO] [stdout] 12 +     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<dyn WriterWorker>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:85:66
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<ReaderWorker>>;
[INFO] [stdout]    |                                                                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 85 -     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<ReaderWorker>>;
[INFO] [stdout] 85 +     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<dyn ReaderWorker>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:184:28
[INFO] [stdout]     |
[INFO] [stdout] 184 |     pub fn new(worker: Box<WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 -     pub fn new(worker: Box<WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout] 184 +     pub fn new(worker: Box<dyn WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:237:28
[INFO] [stdout]     |
[INFO] [stdout] 237 |     pub fn new(worker: Box<ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 237 -     pub fn new(worker: Box<ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout] 237 +     pub fn new(worker: Box<dyn ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/decoder.rs:86:50
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 ptr::write(error, Error::new(err.description()));
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:135:23
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let diss: Box<Decoder> = Box::new(diss);
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 135 -         let diss: Box<Decoder> = Box::new(diss);
[INFO] [stdout] 135 +         let diss: Box<dyn Decoder> = Box::new(diss);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let writer: Box<Writer> = Box::new(writer);
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 34 -         let writer: Box<Writer> = Box::new(writer);
[INFO] [stdout] 34 +         let writer: Box<dyn Writer> = Box::new(writer);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/io.rs:77:42
[INFO] [stdout]    |
[INFO] [stdout] 77 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]    |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:107:25
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let reader: Box<Reader> = Box::new(reader);
[INFO] [stdout]     |                         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 107 -         let reader: Box<Reader> = Box::new(reader);
[INFO] [stdout] 107 +         let reader: Box<dyn Reader> = Box::new(reader);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:150:42
[INFO] [stdout]     |
[INFO] [stdout] 150 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:288:42
[INFO] [stdout]     |
[INFO] [stdout] 288 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:299:42
[INFO] [stdout]     |
[INFO] [stdout] 299 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:321:42
[INFO] [stdout]     |
[INFO] [stdout] 321 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `WriterWorkerBox` does not permit being left uninitialized
[INFO] [stdout]    --> src/io.rs:47:49
[INFO] [stdout]     |
[INFO] [stdout] 47  |         let mut out: WriterWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                                 |
[INFO] [stdout]     |                                                 this code causes undefined behavior when executed
[INFO] [stdout]     |                                                 help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] note: function pointers must be non-null (in this struct field)
[INFO] [stdout]    --> src/io.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 176 |     write: WriterFunc,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `ReaderWorkerBox` does not permit being left uninitialized
[INFO] [stdout]    --> src/io.rs:120:49
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut out: ReaderWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                                 |
[INFO] [stdout]     |                                                 this code causes undefined behavior when executed
[INFO] [stdout]     |                                                 help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout] note: function pointers must be non-null (in this struct field)
[INFO] [stdout]    --> src/io.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     read: ReaderFunc,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 68 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.75s
[INFO] running `Command { std: "docker" "inspect" "97b425ca1151aaa9b684fd79d2381f5863c9b8ae1285b971764b3b22a0933307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97b425ca1151aaa9b684fd79d2381f5863c9b8ae1285b971764b3b22a0933307", kill_on_drop: false }`
[INFO] [stdout] 97b425ca1151aaa9b684fd79d2381f5863c9b8ae1285b971764b3b22a0933307
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a12a718f601573361adb5f6a4752a07bfe79831bfb21b6990d85e5cc3497d2e1
[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" "a12a718f601573361adb5f6a4752a07bfe79831bfb21b6990d85e5cc3497d2e1", kill_on_drop: false }`
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/cast.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn cast(&self, &slice::ByteSlice) -> Result<Variant>;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &slice::ByteSlice`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:26
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &LayerStack`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:53
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                                                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Parent`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:95:26
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout]    |                          ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/attr.rs:360:61
[INFO] [stdout]     |
[INFO] [stdout] 360 |             unsafe { *err = Error::new(::std::error::Error::description(&*e)) }
[INFO] [stdout]     |                                                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/attr.rs:213:26
[INFO] [stdout]     |
[INFO] [stdout] 213 |             start = mem::uninitialized();
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/attr.rs:214:24
[INFO] [stdout]     |
[INFO] [stdout] 214 |             end = mem::uninitialized();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |         write!(f, "Error: {}", error::Error::description(self))
[INFO] [stdout]    |                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 |         write!(f, "{}", error::Error::description(self))
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/io.rs:47:54
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut out: WriterWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/io.rs:120:54
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut out: ReaderWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/attr.rs:134:22
[INFO] [stdout]     |
[INFO] [stdout] 134 |     cast: Option<Box<Cast>>,
[INFO] [stdout]     |                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 134 -     cast: Option<Box<Cast>>,
[INFO] [stdout] 134 +     cast: Option<Box<dyn Cast>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/attr.rs:184:22
[INFO] [stdout]     |
[INFO] [stdout] 184 |     cast: Option<Box<Cast>>,
[INFO] [stdout]     |                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 -     cast: Option<Box<Cast>>,
[INFO] [stdout] 184 +     cast: Option<Box<dyn Cast>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |     worker: *mut Box<Worker>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 -     worker: *mut Box<Worker>,
[INFO] [stdout] 39 +     worker: *mut Box<dyn Worker>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:175:22
[INFO] [stdout]     |
[INFO] [stdout] 175 |     worker: *mut Box<WriterWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -     worker: *mut Box<WriterWorker>,
[INFO] [stdout] 175 +     worker: *mut Box<dyn WriterWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:170:28
[INFO] [stdout]     |
[INFO] [stdout] 170 |     extern "C" fn(*mut Box<WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -     extern "C" fn(*mut Box<WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout] 170 +     extern "C" fn(*mut Box<dyn WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:172:45
[INFO] [stdout]     |
[INFO] [stdout] 172 | type WriterEndFunc = extern "C" fn(*mut Box<WriterWorker>, *mut Error) -> u8;
[INFO] [stdout]     |                                             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 172 - type WriterEndFunc = extern "C" fn(*mut Box<WriterWorker>, *mut Error) -> u8;
[INFO] [stdout] 172 + type WriterEndFunc = extern "C" fn(*mut Box<dyn WriterWorker>, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:178:34
[INFO] [stdout]     |
[INFO] [stdout] 178 |     drop: extern "C" fn(*mut Box<WriterWorker>),
[INFO] [stdout]     |                                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 178 -     drop: extern "C" fn(*mut Box<WriterWorker>),
[INFO] [stdout] 178 +     drop: extern "C" fn(*mut Box<dyn WriterWorker>),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:229:22
[INFO] [stdout]     |
[INFO] [stdout] 229 |     worker: *mut Box<ReaderWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 229 -     worker: *mut Box<ReaderWorker>,
[INFO] [stdout] 229 +     worker: *mut Box<dyn ReaderWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:226:28
[INFO] [stdout]     |
[INFO] [stdout] 226 |     extern "C" fn(*mut Box<ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 226 -     extern "C" fn(*mut Box<ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout] 226 +     extern "C" fn(*mut Box<dyn ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:231:34
[INFO] [stdout]     |
[INFO] [stdout] 231 |     drop: extern "C" fn(*mut Box<ReaderWorker>),
[INFO] [stdout]     |                                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 231 -     drop: extern "C" fn(*mut Box<ReaderWorker>),
[INFO] [stdout] 231 +     drop: extern "C" fn(*mut Box<dyn ReaderWorker>),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:128:23
[INFO] [stdout]     |
[INFO] [stdout] 128 |     decoder: *mut Box<Decoder>,
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 -     decoder: *mut Box<Decoder>,
[INFO] [stdout] 128 +     decoder: *mut Box<dyn Decoder>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:19:22
[INFO] [stdout]    |
[INFO] [stdout] 19 |     writer: *mut Box<Writer>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 -     writer: *mut Box<Writer>,
[INFO] [stdout] 19 +     writer: *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:20:32
[INFO] [stdout]    |
[INFO] [stdout] 20 |     id: extern "C" fn(*mut Box<Writer>) -> SafeString,
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 -     id: extern "C" fn(*mut Box<Writer>) -> SafeString,
[INFO] [stdout] 20 +     id: extern "C" fn(*mut Box<dyn Writer>) -> SafeString,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:22:18
[INFO] [stdout]    |
[INFO] [stdout] 22 |         *mut Box<Writer>,
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 -         *mut Box<Writer>,
[INFO] [stdout] 22 +         *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:92:22
[INFO] [stdout]    |
[INFO] [stdout] 92 |     reader: *mut Box<Reader>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     reader: *mut Box<Reader>,
[INFO] [stdout] 92 +     reader: *mut Box<dyn Reader>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling genet-abi v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:93:32
[INFO] [stdout]    |
[INFO] [stdout] 93 |     id: extern "C" fn(*mut Box<Reader>) -> SafeString,
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 93 -     id: extern "C" fn(*mut Box<Reader>) -> SafeString,
[INFO] [stdout] 93 +     id: extern "C" fn(*mut Box<dyn Reader>) -> SafeString,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:95:18
[INFO] [stdout]    |
[INFO] [stdout] 95 |         *mut Box<Reader>,
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 95 -         *mut Box<Reader>,
[INFO] [stdout] 95 +         *mut Box<dyn Reader>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/result.rs:4:44
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stdout]   |                                            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 - pub type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stdout] 4 + pub type Result<T> = result::Result<T, Box<dyn Error>>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:32:20
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Clone for Box<Cast> {
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 - impl Clone for Box<Cast> {
[INFO] [stdout] 32 + impl Clone for Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn clone_box(&self) -> Box<Cast>;
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 -     fn clone_box(&self) -> Box<Cast>;
[INFO] [stdout] 15 +     fn clone_box(&self) -> Box<dyn Cast>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:16:30
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn into_box(self) -> Box<Cast>;
[INFO] [stdout]    |                              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     fn into_box(self) -> Box<Cast>;
[INFO] [stdout] 16 +     fn into_box(self) -> Box<dyn Cast>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn clone_box(&self) -> Box<Cast> {
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 -     fn clone_box(&self) -> Box<Cast> {
[INFO] [stdout] 23 +     fn clone_box(&self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:27:30
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn into_box(self) -> Box<Cast> {
[INFO] [stdout]    |                              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 -     fn into_box(self) -> Box<Cast> {
[INFO] [stdout] 27 +     fn into_box(self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn clone(&self) -> Box<Cast> {
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 -     fn clone(&self) -> Box<Cast> {
[INFO] [stdout] 33 +     fn clone(&self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl Clone for Box<Decoder> {
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 117 - impl Clone for Box<Decoder> {
[INFO] [stdout] 117 + impl Clone for Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:95:43
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout]    |                                           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 95 -     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout] 95 +     fn new_worker(&self, &Context) -> Box<dyn Worker>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:100:32
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn clone_box(&self) -> Box<Decoder>;
[INFO] [stdout]     |                                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     fn clone_box(&self) -> Box<Decoder>;
[INFO] [stdout] 100 +     fn clone_box(&self) -> Box<dyn Decoder>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:101:30
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn into_box(self) -> Box<Decoder>;
[INFO] [stdout]     |                              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 101 -     fn into_box(self) -> Box<Decoder>;
[INFO] [stdout] 101 +     fn into_box(self) -> Box<dyn Decoder>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn new(worker: Box<Worker>) -> WorkerBox {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 43 -     fn new(worker: Box<Worker>) -> WorkerBox {
[INFO] [stdout] 43 +     fn new(worker: Box<dyn Worker>) -> WorkerBox {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:108:32
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn clone_box(&self) -> Box<Decoder> {
[INFO] [stdout]     |                                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 -     fn clone_box(&self) -> Box<Decoder> {
[INFO] [stdout] 108 +     fn clone_box(&self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:112:30
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn into_box(self) -> Box<Decoder> {
[INFO] [stdout]     |                              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 112 -     fn into_box(self) -> Box<Decoder> {
[INFO] [stdout] 112 +     fn into_box(self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:118:28
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn clone(&self) -> Box<Decoder> {
[INFO] [stdout]     |                            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -     fn clone(&self) -> Box<Decoder> {
[INFO] [stdout] 118 +     fn clone(&self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:58:46
[INFO] [stdout]    |
[INFO] [stdout] 58 | extern "C" fn abi_writer_id(writer: *mut Box<Writer>) -> SafeString {
[INFO] [stdout]    |                                              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 58 - extern "C" fn abi_writer_id(writer: *mut Box<Writer>) -> SafeString {
[INFO] [stdout] 58 + extern "C" fn abi_writer_id(writer: *mut Box<dyn Writer>) -> SafeString {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:63:22
[INFO] [stdout]    |
[INFO] [stdout] 63 |     writer: *mut Box<Writer>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     writer: *mut Box<Writer>,
[INFO] [stdout] 63 +     writer: *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:131:46
[INFO] [stdout]     |
[INFO] [stdout] 131 | extern "C" fn abi_reader_id(reader: *mut Box<Reader>) -> SafeString {
[INFO] [stdout]     |                                              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 131 - extern "C" fn abi_reader_id(reader: *mut Box<Reader>) -> SafeString {
[INFO] [stdout] 131 + extern "C" fn abi_reader_id(reader: *mut Box<dyn Reader>) -> SafeString {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:136:22
[INFO] [stdout]     |
[INFO] [stdout] 136 |     reader: *mut Box<Reader>,
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 136 -     reader: *mut Box<Reader>,
[INFO] [stdout] 136 +     reader: *mut Box<dyn Reader>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:268:55
[INFO] [stdout]     |
[INFO] [stdout] 268 | extern "C" fn abi_writer_worker_drop(worker: *mut Box<WriterWorker>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 268 - extern "C" fn abi_writer_worker_drop(worker: *mut Box<WriterWorker>) {
[INFO] [stdout] 268 + extern "C" fn abi_writer_worker_drop(worker: *mut Box<dyn WriterWorker>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:272:55
[INFO] [stdout]     |
[INFO] [stdout] 272 | extern "C" fn abi_reader_worker_drop(worker: *mut Box<ReaderWorker>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 272 - extern "C" fn abi_reader_worker_drop(worker: *mut Box<ReaderWorker>) {
[INFO] [stdout] 272 + extern "C" fn abi_reader_worker_drop(worker: *mut Box<dyn ReaderWorker>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:277:22
[INFO] [stdout]     |
[INFO] [stdout] 277 |     worker: *mut Box<WriterWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 277 -     worker: *mut Box<WriterWorker>,
[INFO] [stdout] 277 +     worker: *mut Box<dyn WriterWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:294:54
[INFO] [stdout]     |
[INFO] [stdout] 294 | extern "C" fn abi_writer_worker_end(worker: *mut Box<WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 294 - extern "C" fn abi_writer_worker_end(worker: *mut Box<WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout] 294 + extern "C" fn abi_writer_worker_end(worker: *mut Box<dyn WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:306:22
[INFO] [stdout]     |
[INFO] [stdout] 306 |     worker: *mut Box<ReaderWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 306 -     worker: *mut Box<ReaderWorker>,
[INFO] [stdout] 306 +     worker: *mut Box<dyn ReaderWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:12:67
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<WriterWorker>>;
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<WriterWorker>>;
[INFO] [stdout] 12 +     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<dyn WriterWorker>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:85:66
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<ReaderWorker>>;
[INFO] [stdout]    |                                                                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 85 -     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<ReaderWorker>>;
[INFO] [stdout] 85 +     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<dyn ReaderWorker>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:184:28
[INFO] [stdout]     |
[INFO] [stdout] 184 |     pub fn new(worker: Box<WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 -     pub fn new(worker: Box<WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout] 184 +     pub fn new(worker: Box<dyn WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:237:28
[INFO] [stdout]     |
[INFO] [stdout] 237 |     pub fn new(worker: Box<ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 237 -     pub fn new(worker: Box<ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout] 237 +     pub fn new(worker: Box<dyn ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/decoder.rs:86:50
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 ptr::write(error, Error::new(err.description()));
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:135:23
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let diss: Box<Decoder> = Box::new(diss);
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 135 -         let diss: Box<Decoder> = Box::new(diss);
[INFO] [stdout] 135 +         let diss: Box<dyn Decoder> = Box::new(diss);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let writer: Box<Writer> = Box::new(writer);
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 34 -         let writer: Box<Writer> = Box::new(writer);
[INFO] [stdout] 34 +         let writer: Box<dyn Writer> = Box::new(writer);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/io.rs:77:42
[INFO] [stdout]    |
[INFO] [stdout] 77 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]    |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:107:25
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let reader: Box<Reader> = Box::new(reader);
[INFO] [stdout]     |                         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 107 -         let reader: Box<Reader> = Box::new(reader);
[INFO] [stdout] 107 +         let reader: Box<dyn Reader> = Box::new(reader);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:150:42
[INFO] [stdout]     |
[INFO] [stdout] 150 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:288:42
[INFO] [stdout]     |
[INFO] [stdout] 288 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:299:42
[INFO] [stdout]     |
[INFO] [stdout] 299 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:321:42
[INFO] [stdout]     |
[INFO] [stdout] 321 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `WriterWorkerBox` does not permit being left uninitialized
[INFO] [stdout]    --> src/io.rs:47:49
[INFO] [stdout]     |
[INFO] [stdout] 47  |         let mut out: WriterWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                                 |
[INFO] [stdout]     |                                                 this code causes undefined behavior when executed
[INFO] [stdout]     |                                                 help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] note: function pointers must be non-null (in this struct field)
[INFO] [stdout]    --> src/io.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 176 |     write: WriterFunc,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `ReaderWorkerBox` does not permit being left uninitialized
[INFO] [stdout]    --> src/io.rs:120:49
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut out: ReaderWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                                 |
[INFO] [stdout]     |                                                 this code causes undefined behavior when executed
[INFO] [stdout]     |                                                 help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout] note: function pointers must be non-null (in this struct field)
[INFO] [stdout]    --> src/io.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     read: ReaderFunc,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 68 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]    --> src/attr.rs:374:9
[INFO] [stdout]     |
[INFO] [stdout] 374 |         error,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/cast.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn cast(&self, &slice::ByteSlice) -> Result<Variant>;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &slice::ByteSlice`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:26
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &LayerStack`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:26:53
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stdout]    |                                                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Parent`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/decoder.rs:95:26
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout]    |                          ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/attr.rs:360:61
[INFO] [stdout]     |
[INFO] [stdout] 360 |             unsafe { *err = Error::new(::std::error::Error::description(&*e)) }
[INFO] [stdout]     |                                                             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/attr.rs:213:26
[INFO] [stdout]     |
[INFO] [stdout] 213 |             start = mem::uninitialized();
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/attr.rs:214:24
[INFO] [stdout]     |
[INFO] [stdout] 214 |             end = mem::uninitialized();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |         write!(f, "Error: {}", error::Error::description(self))
[INFO] [stdout]    |                                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 |         write!(f, "{}", error::Error::description(self))
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/io.rs:47:54
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut out: WriterWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/io.rs:120:54
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut out: ReaderWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 |         assert_eq!(error::Error::description(&err), msg);
[INFO] [stdout]    |                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/attr.rs:134:22
[INFO] [stdout]     |
[INFO] [stdout] 134 |     cast: Option<Box<Cast>>,
[INFO] [stdout]     |                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 134 -     cast: Option<Box<Cast>>,
[INFO] [stdout] 134 +     cast: Option<Box<dyn Cast>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/attr.rs:184:22
[INFO] [stdout]     |
[INFO] [stdout] 184 |     cast: Option<Box<Cast>>,
[INFO] [stdout]     |                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 -     cast: Option<Box<Cast>>,
[INFO] [stdout] 184 +     cast: Option<Box<dyn Cast>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |     worker: *mut Box<Worker>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 -     worker: *mut Box<Worker>,
[INFO] [stdout] 39 +     worker: *mut Box<dyn Worker>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:175:22
[INFO] [stdout]     |
[INFO] [stdout] 175 |     worker: *mut Box<WriterWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -     worker: *mut Box<WriterWorker>,
[INFO] [stdout] 175 +     worker: *mut Box<dyn WriterWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:170:28
[INFO] [stdout]     |
[INFO] [stdout] 170 |     extern "C" fn(*mut Box<WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -     extern "C" fn(*mut Box<WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout] 170 +     extern "C" fn(*mut Box<dyn WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:172:45
[INFO] [stdout]     |
[INFO] [stdout] 172 | type WriterEndFunc = extern "C" fn(*mut Box<WriterWorker>, *mut Error) -> u8;
[INFO] [stdout]     |                                             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 172 - type WriterEndFunc = extern "C" fn(*mut Box<WriterWorker>, *mut Error) -> u8;
[INFO] [stdout] 172 + type WriterEndFunc = extern "C" fn(*mut Box<dyn WriterWorker>, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:178:34
[INFO] [stdout]     |
[INFO] [stdout] 178 |     drop: extern "C" fn(*mut Box<WriterWorker>),
[INFO] [stdout]     |                                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 178 -     drop: extern "C" fn(*mut Box<WriterWorker>),
[INFO] [stdout] 178 +     drop: extern "C" fn(*mut Box<dyn WriterWorker>),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:229:22
[INFO] [stdout]     |
[INFO] [stdout] 229 |     worker: *mut Box<ReaderWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 229 -     worker: *mut Box<ReaderWorker>,
[INFO] [stdout] 229 +     worker: *mut Box<dyn ReaderWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:226:28
[INFO] [stdout]     |
[INFO] [stdout] 226 |     extern "C" fn(*mut Box<ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 226 -     extern "C" fn(*mut Box<ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout] 226 +     extern "C" fn(*mut Box<dyn ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:231:34
[INFO] [stdout]     |
[INFO] [stdout] 231 |     drop: extern "C" fn(*mut Box<ReaderWorker>),
[INFO] [stdout]     |                                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 231 -     drop: extern "C" fn(*mut Box<ReaderWorker>),
[INFO] [stdout] 231 +     drop: extern "C" fn(*mut Box<dyn ReaderWorker>),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:128:23
[INFO] [stdout]     |
[INFO] [stdout] 128 |     decoder: *mut Box<Decoder>,
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 -     decoder: *mut Box<Decoder>,
[INFO] [stdout] 128 +     decoder: *mut Box<dyn Decoder>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:19:22
[INFO] [stdout]    |
[INFO] [stdout] 19 |     writer: *mut Box<Writer>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 -     writer: *mut Box<Writer>,
[INFO] [stdout] 19 +     writer: *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:20:32
[INFO] [stdout]    |
[INFO] [stdout] 20 |     id: extern "C" fn(*mut Box<Writer>) -> SafeString,
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 -     id: extern "C" fn(*mut Box<Writer>) -> SafeString,
[INFO] [stdout] 20 +     id: extern "C" fn(*mut Box<dyn Writer>) -> SafeString,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:22:18
[INFO] [stdout]    |
[INFO] [stdout] 22 |         *mut Box<Writer>,
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 -         *mut Box<Writer>,
[INFO] [stdout] 22 +         *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:92:22
[INFO] [stdout]    |
[INFO] [stdout] 92 |     reader: *mut Box<Reader>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     reader: *mut Box<Reader>,
[INFO] [stdout] 92 +     reader: *mut Box<dyn Reader>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:93:32
[INFO] [stdout]    |
[INFO] [stdout] 93 |     id: extern "C" fn(*mut Box<Reader>) -> SafeString,
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 93 -     id: extern "C" fn(*mut Box<Reader>) -> SafeString,
[INFO] [stdout] 93 +     id: extern "C" fn(*mut Box<dyn Reader>) -> SafeString,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:95:18
[INFO] [stdout]    |
[INFO] [stdout] 95 |         *mut Box<Reader>,
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 95 -         *mut Box<Reader>,
[INFO] [stdout] 95 +         *mut Box<dyn Reader>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/result.rs:4:44
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stdout]   |                                            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 - pub type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stdout] 4 + pub type Result<T> = result::Result<T, Box<dyn Error>>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:32:20
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Clone for Box<Cast> {
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 32 - impl Clone for Box<Cast> {
[INFO] [stdout] 32 + impl Clone for Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:15:32
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn clone_box(&self) -> Box<Cast>;
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 -     fn clone_box(&self) -> Box<Cast>;
[INFO] [stdout] 15 +     fn clone_box(&self) -> Box<dyn Cast>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:16:30
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn into_box(self) -> Box<Cast>;
[INFO] [stdout]    |                              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     fn into_box(self) -> Box<Cast>;
[INFO] [stdout] 16 +     fn into_box(self) -> Box<dyn Cast>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn clone_box(&self) -> Box<Cast> {
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 -     fn clone_box(&self) -> Box<Cast> {
[INFO] [stdout] 23 +     fn clone_box(&self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:27:30
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn into_box(self) -> Box<Cast> {
[INFO] [stdout]    |                              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 -     fn into_box(self) -> Box<Cast> {
[INFO] [stdout] 27 +     fn into_box(self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cast.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn clone(&self) -> Box<Cast> {
[INFO] [stdout]    |                            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 33 -     fn clone(&self) -> Box<Cast> {
[INFO] [stdout] 33 +     fn clone(&self) -> Box<dyn Cast> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl Clone for Box<Decoder> {
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 117 - impl Clone for Box<Decoder> {
[INFO] [stdout] 117 + impl Clone for Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:95:43
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout]    |                                           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 95 -     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stdout] 95 +     fn new_worker(&self, &Context) -> Box<dyn Worker>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:100:32
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn clone_box(&self) -> Box<Decoder>;
[INFO] [stdout]     |                                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     fn clone_box(&self) -> Box<Decoder>;
[INFO] [stdout] 100 +     fn clone_box(&self) -> Box<dyn Decoder>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:101:30
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn into_box(self) -> Box<Decoder>;
[INFO] [stdout]     |                              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 101 -     fn into_box(self) -> Box<Decoder>;
[INFO] [stdout] 101 +     fn into_box(self) -> Box<dyn Decoder>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/decoder.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn new(worker: Box<Worker>) -> WorkerBox {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 43 -     fn new(worker: Box<Worker>) -> WorkerBox {
[INFO] [stdout] 43 +     fn new(worker: Box<dyn Worker>) -> WorkerBox {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:108:32
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn clone_box(&self) -> Box<Decoder> {
[INFO] [stdout]     |                                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 -     fn clone_box(&self) -> Box<Decoder> {
[INFO] [stdout] 108 +     fn clone_box(&self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:112:30
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn into_box(self) -> Box<Decoder> {
[INFO] [stdout]     |                              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 112 -     fn into_box(self) -> Box<Decoder> {
[INFO] [stdout] 112 +     fn into_box(self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:118:28
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn clone(&self) -> Box<Decoder> {
[INFO] [stdout]     |                            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -     fn clone(&self) -> Box<Decoder> {
[INFO] [stdout] 118 +     fn clone(&self) -> Box<dyn Decoder> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:58:46
[INFO] [stdout]    |
[INFO] [stdout] 58 | extern "C" fn abi_writer_id(writer: *mut Box<Writer>) -> SafeString {
[INFO] [stdout]    |                                              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 58 - extern "C" fn abi_writer_id(writer: *mut Box<Writer>) -> SafeString {
[INFO] [stdout] 58 + extern "C" fn abi_writer_id(writer: *mut Box<dyn Writer>) -> SafeString {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:63:22
[INFO] [stdout]    |
[INFO] [stdout] 63 |     writer: *mut Box<Writer>,
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     writer: *mut Box<Writer>,
[INFO] [stdout] 63 +     writer: *mut Box<dyn Writer>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:131:46
[INFO] [stdout]     |
[INFO] [stdout] 131 | extern "C" fn abi_reader_id(reader: *mut Box<Reader>) -> SafeString {
[INFO] [stdout]     |                                              ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 131 - extern "C" fn abi_reader_id(reader: *mut Box<Reader>) -> SafeString {
[INFO] [stdout] 131 + extern "C" fn abi_reader_id(reader: *mut Box<dyn Reader>) -> SafeString {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:136:22
[INFO] [stdout]     |
[INFO] [stdout] 136 |     reader: *mut Box<Reader>,
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 136 -     reader: *mut Box<Reader>,
[INFO] [stdout] 136 +     reader: *mut Box<dyn Reader>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:268:55
[INFO] [stdout]     |
[INFO] [stdout] 268 | extern "C" fn abi_writer_worker_drop(worker: *mut Box<WriterWorker>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 268 - extern "C" fn abi_writer_worker_drop(worker: *mut Box<WriterWorker>) {
[INFO] [stdout] 268 + extern "C" fn abi_writer_worker_drop(worker: *mut Box<dyn WriterWorker>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:272:55
[INFO] [stdout]     |
[INFO] [stdout] 272 | extern "C" fn abi_reader_worker_drop(worker: *mut Box<ReaderWorker>) {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 272 - extern "C" fn abi_reader_worker_drop(worker: *mut Box<ReaderWorker>) {
[INFO] [stdout] 272 + extern "C" fn abi_reader_worker_drop(worker: *mut Box<dyn ReaderWorker>) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:277:22
[INFO] [stdout]     |
[INFO] [stdout] 277 |     worker: *mut Box<WriterWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 277 -     worker: *mut Box<WriterWorker>,
[INFO] [stdout] 277 +     worker: *mut Box<dyn WriterWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:294:54
[INFO] [stdout]     |
[INFO] [stdout] 294 | extern "C" fn abi_writer_worker_end(worker: *mut Box<WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 294 - extern "C" fn abi_writer_worker_end(worker: *mut Box<WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout] 294 + extern "C" fn abi_writer_worker_end(worker: *mut Box<dyn WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:306:22
[INFO] [stdout]     |
[INFO] [stdout] 306 |     worker: *mut Box<ReaderWorker>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 306 -     worker: *mut Box<ReaderWorker>,
[INFO] [stdout] 306 +     worker: *mut Box<dyn ReaderWorker>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:12:67
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<WriterWorker>>;
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<WriterWorker>>;
[INFO] [stdout] 12 +     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<dyn WriterWorker>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:85:66
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<ReaderWorker>>;
[INFO] [stdout]    |                                                                  ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 85 -     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<ReaderWorker>>;
[INFO] [stdout] 85 +     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<dyn ReaderWorker>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:184:28
[INFO] [stdout]     |
[INFO] [stdout] 184 |     pub fn new(worker: Box<WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 -     pub fn new(worker: Box<WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout] 184 +     pub fn new(worker: Box<dyn WriterWorker>) -> WriterWorkerBox {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:237:28
[INFO] [stdout]     |
[INFO] [stdout] 237 |     pub fn new(worker: Box<ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 237 -     pub fn new(worker: Box<ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout] 237 +     pub fn new(worker: Box<dyn ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:200:57
[INFO] [stdout]     |
[INFO] [stdout] 200 |             fn new_worker(&self, _ctx: &Context) -> Box<Worker> {
[INFO] [stdout]     |                                                         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 200 -             fn new_worker(&self, _ctx: &Context) -> Box<Worker> {
[INFO] [stdout] 200 +             fn new_worker(&self, _ctx: &Context) -> Box<dyn Worker> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/decoder.rs:86:50
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 ptr::write(error, Error::new(err.description()));
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/decoder.rs:135:23
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let diss: Box<Decoder> = Box::new(diss);
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 135 -         let diss: Box<Decoder> = Box::new(diss);
[INFO] [stdout] 135 +         let diss: Box<dyn Decoder> = Box::new(diss);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io.rs:34:25
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let writer: Box<Writer> = Box::new(writer);
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 34 -         let writer: Box<Writer> = Box::new(writer);
[INFO] [stdout] 34 +         let writer: Box<dyn Writer> = Box::new(writer);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/io.rs:77:42
[INFO] [stdout]    |
[INFO] [stdout] 77 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]    |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/io.rs:107:25
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let reader: Box<Reader> = Box::new(reader);
[INFO] [stdout]     |                         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 107 -         let reader: Box<Reader> = Box::new(reader);
[INFO] [stdout] 107 +         let reader: Box<dyn Reader> = Box::new(reader);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:150:42
[INFO] [stdout]     |
[INFO] [stdout] 150 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:288:42
[INFO] [stdout]     |
[INFO] [stdout] 288 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:299:42
[INFO] [stdout]     |
[INFO] [stdout] 299 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/io.rs:321:42
[INFO] [stdout]     |
[INFO] [stdout] 321 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stdout]     |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/attr.rs:581:40
[INFO] [stdout]     |
[INFO] [stdout] 581 |             Err(err) => assert_eq!(err.description(), "oh no!"),
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `WriterWorkerBox` does not permit being left uninitialized
[INFO] [stdout]    --> src/io.rs:47:49
[INFO] [stdout]     |
[INFO] [stdout] 47  |         let mut out: WriterWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                                 |
[INFO] [stdout]     |                                                 this code causes undefined behavior when executed
[INFO] [stdout]     |                                                 help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] note: function pointers must be non-null (in this struct field)
[INFO] [stdout]    --> src/io.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 176 |     write: WriterFunc,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `ReaderWorkerBox` does not permit being left uninitialized
[INFO] [stdout]    --> src/io.rs:120:49
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut out: ReaderWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                                 |
[INFO] [stdout]     |                                                 this code causes undefined behavior when executed
[INFO] [stdout]     |                                                 help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]     |
[INFO] [stdout] note: function pointers must be non-null (in this struct field)
[INFO] [stdout]    --> src/io.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     read: ReaderFunc,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 72 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.65s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/genet_abi-fde5178399748815)
[INFO] running `Command { std: "docker" "inspect" "a12a718f601573361adb5f6a4752a07bfe79831bfb21b6990d85e5cc3497d2e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a12a718f601573361adb5f6a4752a07bfe79831bfb21b6990d85e5cc3497d2e1", kill_on_drop: false }`
[INFO] [stdout] a12a718f601573361adb5f6a4752a07bfe79831bfb21b6990d85e5cc3497d2e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] 3a319fe5c914b19db9f3f5821b1e237350054b366d4996292f511d35c3c98daa
[INFO] running `Command { std: "docker" "start" "-a" "3a319fe5c914b19db9f3f5821b1e237350054b366d4996292f511d35c3c98daa", kill_on_drop: false }`
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/cast.rs:11:20
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn cast(&self, &slice::ByteSlice) -> Result<Variant>;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &slice::ByteSlice`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/decoder.rs:26:26
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stderr]    |                          ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/decoder.rs:26:40
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stderr]    |                                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &LayerStack`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/decoder.rs:26:53
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn decode(&mut self, &mut Context, &LayerStack, &mut Parent) -> Result<Status>;
[INFO] [stderr]    |                                                     ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Parent`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/decoder.rs:95:26
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stderr]    |                          ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/attr.rs:360:61
[INFO] [stderr]     |
[INFO] [stderr] 360 |             unsafe { *err = Error::new(::std::error::Error::description(&*e)) }
[INFO] [stderr]     |                                                             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/attr.rs:213:26
[INFO] [stderr]     |
[INFO] [stderr] 213 |             start = mem::uninitialized();
[INFO] [stderr]     |                          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/attr.rs:214:24
[INFO] [stderr]     |
[INFO] [stderr] 214 |             end = mem::uninitialized();
[INFO] [stderr]     |                        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:22:46
[INFO] [stderr]    |
[INFO] [stderr] 22 |         write!(f, "Error: {}", error::Error::description(self))
[INFO] [stderr]    |                                              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:28:39
[INFO] [stderr]    |
[INFO] [stderr] 28 |         write!(f, "{}", error::Error::description(self))
[INFO] [stderr]    |                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/io.rs:47:54
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let mut out: WriterWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/io.rs:120:54
[INFO] [stderr]     |
[INFO] [stderr] 120 |         let mut out: ReaderWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/attr.rs:134:22
[INFO] [stderr]     |
[INFO] [stderr] 134 |     cast: Option<Box<Cast>>,
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 134 -     cast: Option<Box<Cast>>,
[INFO] [stderr] 134 +     cast: Option<Box<dyn Cast>>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/attr.rs:184:22
[INFO] [stderr]     |
[INFO] [stderr] 184 |     cast: Option<Box<Cast>>,
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 184 -     cast: Option<Box<Cast>>,
[INFO] [stderr] 184 +     cast: Option<Box<dyn Cast>>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decoder.rs:39:22
[INFO] [stderr]    |
[INFO] [stderr] 39 |     worker: *mut Box<Worker>,
[INFO] [stderr]    |                      ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 39 -     worker: *mut Box<Worker>,
[INFO] [stderr] 39 +     worker: *mut Box<dyn Worker>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:175:22
[INFO] [stderr]     |
[INFO] [stderr] 175 |     worker: *mut Box<WriterWorker>,
[INFO] [stderr]     |                      ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 175 -     worker: *mut Box<WriterWorker>,
[INFO] [stderr] 175 +     worker: *mut Box<dyn WriterWorker>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:170:28
[INFO] [stderr]     |
[INFO] [stderr] 170 |     extern "C" fn(*mut Box<WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stderr]     |                            ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 170 -     extern "C" fn(*mut Box<WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stderr] 170 +     extern "C" fn(*mut Box<dyn WriterWorker>, u32, *const *const Layer, u64, *mut Error) -> u8;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:172:45
[INFO] [stderr]     |
[INFO] [stderr] 172 | type WriterEndFunc = extern "C" fn(*mut Box<WriterWorker>, *mut Error) -> u8;
[INFO] [stderr]     |                                             ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 172 - type WriterEndFunc = extern "C" fn(*mut Box<WriterWorker>, *mut Error) -> u8;
[INFO] [stderr] 172 + type WriterEndFunc = extern "C" fn(*mut Box<dyn WriterWorker>, *mut Error) -> u8;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:178:34
[INFO] [stderr]     |
[INFO] [stderr] 178 |     drop: extern "C" fn(*mut Box<WriterWorker>),
[INFO] [stderr]     |                                  ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 178 -     drop: extern "C" fn(*mut Box<WriterWorker>),
[INFO] [stderr] 178 +     drop: extern "C" fn(*mut Box<dyn WriterWorker>),
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:229:22
[INFO] [stderr]     |
[INFO] [stderr] 229 |     worker: *mut Box<ReaderWorker>,
[INFO] [stderr]     |                      ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 229 -     worker: *mut Box<ReaderWorker>,
[INFO] [stderr] 229 +     worker: *mut Box<dyn ReaderWorker>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:226:28
[INFO] [stderr]     |
[INFO] [stderr] 226 |     extern "C" fn(*mut Box<ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stderr]     |                            ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 226 -     extern "C" fn(*mut Box<ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stderr] 226 +     extern "C" fn(*mut Box<dyn ReaderWorker>, *mut SafeVec<MutFixed<Layer>>, *mut Error) -> u8;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:231:34
[INFO] [stderr]     |
[INFO] [stderr] 231 |     drop: extern "C" fn(*mut Box<ReaderWorker>),
[INFO] [stderr]     |                                  ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 231 -     drop: extern "C" fn(*mut Box<ReaderWorker>),
[INFO] [stderr] 231 +     drop: extern "C" fn(*mut Box<dyn ReaderWorker>),
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:128:23
[INFO] [stderr]     |
[INFO] [stderr] 128 |     decoder: *mut Box<Decoder>,
[INFO] [stderr]     |                       ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 128 -     decoder: *mut Box<Decoder>,
[INFO] [stderr] 128 +     decoder: *mut Box<dyn Decoder>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 |     writer: *mut Box<Writer>,
[INFO] [stderr]    |                      ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 19 -     writer: *mut Box<Writer>,
[INFO] [stderr] 19 +     writer: *mut Box<dyn Writer>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:20:32
[INFO] [stderr]    |
[INFO] [stderr] 20 |     id: extern "C" fn(*mut Box<Writer>) -> SafeString,
[INFO] [stderr]    |                                ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 20 -     id: extern "C" fn(*mut Box<Writer>) -> SafeString,
[INFO] [stderr] 20 +     id: extern "C" fn(*mut Box<dyn Writer>) -> SafeString,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:22:18
[INFO] [stderr]    |
[INFO] [stderr] 22 |         *mut Box<Writer>,
[INFO] [stderr]    |                  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 22 -         *mut Box<Writer>,
[INFO] [stderr] 22 +         *mut Box<dyn Writer>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:92:22
[INFO] [stderr]    |
[INFO] [stderr] 92 |     reader: *mut Box<Reader>,
[INFO] [stderr]    |                      ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 92 -     reader: *mut Box<Reader>,
[INFO] [stderr] 92 +     reader: *mut Box<dyn Reader>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:93:32
[INFO] [stderr]    |
[INFO] [stderr] 93 |     id: extern "C" fn(*mut Box<Reader>) -> SafeString,
[INFO] [stderr]    |                                ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 93 -     id: extern "C" fn(*mut Box<Reader>) -> SafeString,
[INFO] [stderr] 93 +     id: extern "C" fn(*mut Box<dyn Reader>) -> SafeString,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 |         *mut Box<Reader>,
[INFO] [stderr]    |                  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 95 -         *mut Box<Reader>,
[INFO] [stderr] 95 +         *mut Box<dyn Reader>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/result.rs:4:44
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stderr]   |                                            ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 4 - pub type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stderr] 4 + pub type Result<T> = result::Result<T, Box<dyn Error>>;
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cast.rs:32:20
[INFO] [stderr]    |
[INFO] [stderr] 32 | impl Clone for Box<Cast> {
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 32 - impl Clone for Box<Cast> {
[INFO] [stderr] 32 + impl Clone for Box<dyn Cast> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cast.rs:15:32
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn clone_box(&self) -> Box<Cast>;
[INFO] [stderr]    |                                ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 15 -     fn clone_box(&self) -> Box<Cast>;
[INFO] [stderr] 15 +     fn clone_box(&self) -> Box<dyn Cast>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cast.rs:16:30
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn into_box(self) -> Box<Cast>;
[INFO] [stderr]    |                              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 16 -     fn into_box(self) -> Box<Cast>;
[INFO] [stderr] 16 +     fn into_box(self) -> Box<dyn Cast>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cast.rs:23:32
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn clone_box(&self) -> Box<Cast> {
[INFO] [stderr]    |                                ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 23 -     fn clone_box(&self) -> Box<Cast> {
[INFO] [stderr] 23 +     fn clone_box(&self) -> Box<dyn Cast> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cast.rs:27:30
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn into_box(self) -> Box<Cast> {
[INFO] [stderr]    |                              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 27 -     fn into_box(self) -> Box<Cast> {
[INFO] [stderr] 27 +     fn into_box(self) -> Box<dyn Cast> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cast.rs:33:28
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn clone(&self) -> Box<Cast> {
[INFO] [stderr]    |                            ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 33 -     fn clone(&self) -> Box<Cast> {
[INFO] [stderr] 33 +     fn clone(&self) -> Box<dyn Cast> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:117:20
[INFO] [stderr]     |
[INFO] [stderr] 117 | impl Clone for Box<Decoder> {
[INFO] [stderr]     |                    ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 117 - impl Clone for Box<Decoder> {
[INFO] [stderr] 117 + impl Clone for Box<dyn Decoder> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decoder.rs:95:43
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stderr]    |                                           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 95 -     fn new_worker(&self, &Context) -> Box<Worker>;
[INFO] [stderr] 95 +     fn new_worker(&self, &Context) -> Box<dyn Worker>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:100:32
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn clone_box(&self) -> Box<Decoder>;
[INFO] [stderr]     |                                ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 100 -     fn clone_box(&self) -> Box<Decoder>;
[INFO] [stderr] 100 +     fn clone_box(&self) -> Box<dyn Decoder>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:101:30
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn into_box(self) -> Box<Decoder>;
[INFO] [stderr]     |                              ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 101 -     fn into_box(self) -> Box<Decoder>;
[INFO] [stderr] 101 +     fn into_box(self) -> Box<dyn Decoder>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decoder.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn new(worker: Box<Worker>) -> WorkerBox {
[INFO] [stderr]    |                        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 43 -     fn new(worker: Box<Worker>) -> WorkerBox {
[INFO] [stderr] 43 +     fn new(worker: Box<dyn Worker>) -> WorkerBox {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:108:32
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn clone_box(&self) -> Box<Decoder> {
[INFO] [stderr]     |                                ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 108 -     fn clone_box(&self) -> Box<Decoder> {
[INFO] [stderr] 108 +     fn clone_box(&self) -> Box<dyn Decoder> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:112:30
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn into_box(self) -> Box<Decoder> {
[INFO] [stderr]     |                              ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 112 -     fn into_box(self) -> Box<Decoder> {
[INFO] [stderr] 112 +     fn into_box(self) -> Box<dyn Decoder> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:118:28
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn clone(&self) -> Box<Decoder> {
[INFO] [stderr]     |                            ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 118 -     fn clone(&self) -> Box<Decoder> {
[INFO] [stderr] 118 +     fn clone(&self) -> Box<dyn Decoder> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:58:46
[INFO] [stderr]    |
[INFO] [stderr] 58 | extern "C" fn abi_writer_id(writer: *mut Box<Writer>) -> SafeString {
[INFO] [stderr]    |                                              ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 58 - extern "C" fn abi_writer_id(writer: *mut Box<Writer>) -> SafeString {
[INFO] [stderr] 58 + extern "C" fn abi_writer_id(writer: *mut Box<dyn Writer>) -> SafeString {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:63:22
[INFO] [stderr]    |
[INFO] [stderr] 63 |     writer: *mut Box<Writer>,
[INFO] [stderr]    |                      ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 63 -     writer: *mut Box<Writer>,
[INFO] [stderr] 63 +     writer: *mut Box<dyn Writer>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:131:46
[INFO] [stderr]     |
[INFO] [stderr] 131 | extern "C" fn abi_reader_id(reader: *mut Box<Reader>) -> SafeString {
[INFO] [stderr]     |                                              ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 131 - extern "C" fn abi_reader_id(reader: *mut Box<Reader>) -> SafeString {
[INFO] [stderr] 131 + extern "C" fn abi_reader_id(reader: *mut Box<dyn Reader>) -> SafeString {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:136:22
[INFO] [stderr]     |
[INFO] [stderr] 136 |     reader: *mut Box<Reader>,
[INFO] [stderr]     |                      ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 136 -     reader: *mut Box<Reader>,
[INFO] [stderr] 136 +     reader: *mut Box<dyn Reader>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:268:55
[INFO] [stderr]     |
[INFO] [stderr] 268 | extern "C" fn abi_writer_worker_drop(worker: *mut Box<WriterWorker>) {
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 268 - extern "C" fn abi_writer_worker_drop(worker: *mut Box<WriterWorker>) {
[INFO] [stderr] 268 + extern "C" fn abi_writer_worker_drop(worker: *mut Box<dyn WriterWorker>) {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:272:55
[INFO] [stderr]     |
[INFO] [stderr] 272 | extern "C" fn abi_reader_worker_drop(worker: *mut Box<ReaderWorker>) {
[INFO] [stderr]     |                                                       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 272 - extern "C" fn abi_reader_worker_drop(worker: *mut Box<ReaderWorker>) {
[INFO] [stderr] 272 + extern "C" fn abi_reader_worker_drop(worker: *mut Box<dyn ReaderWorker>) {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:277:22
[INFO] [stderr]     |
[INFO] [stderr] 277 |     worker: *mut Box<WriterWorker>,
[INFO] [stderr]     |                      ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 277 -     worker: *mut Box<WriterWorker>,
[INFO] [stderr] 277 +     worker: *mut Box<dyn WriterWorker>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:294:54
[INFO] [stderr]     |
[INFO] [stderr] 294 | extern "C" fn abi_writer_worker_end(worker: *mut Box<WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 294 - extern "C" fn abi_writer_worker_end(worker: *mut Box<WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stderr] 294 + extern "C" fn abi_writer_worker_end(worker: *mut Box<dyn WriterWorker>, err: *mut Error) -> u8 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:306:22
[INFO] [stderr]     |
[INFO] [stderr] 306 |     worker: *mut Box<ReaderWorker>,
[INFO] [stderr]     |                      ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 306 -     worker: *mut Box<ReaderWorker>,
[INFO] [stderr] 306 +     worker: *mut Box<dyn ReaderWorker>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:12:67
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<WriterWorker>>;
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 12 -     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<WriterWorker>>;
[INFO] [stderr] 12 +     fn new_worker(&self, ctx: &Context, args: &str) -> Result<Box<dyn WriterWorker>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:85:66
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<ReaderWorker>>;
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 85 -     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<ReaderWorker>>;
[INFO] [stderr] 85 +     fn new_worker(&self, ctx: &Context, arg: &str) -> Result<Box<dyn ReaderWorker>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:184:28
[INFO] [stderr]     |
[INFO] [stderr] 184 |     pub fn new(worker: Box<WriterWorker>) -> WriterWorkerBox {
[INFO] [stderr]     |                            ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 184 -     pub fn new(worker: Box<WriterWorker>) -> WriterWorkerBox {
[INFO] [stderr] 184 +     pub fn new(worker: Box<dyn WriterWorker>) -> WriterWorkerBox {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:237:28
[INFO] [stderr]     |
[INFO] [stderr] 237 |     pub fn new(worker: Box<ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stderr]     |                            ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 237 -     pub fn new(worker: Box<ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stderr] 237 +     pub fn new(worker: Box<dyn ReaderWorker>) -> ReaderWorkerBox {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/decoder.rs:86:50
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 ptr::write(error, Error::new(err.description()));
[INFO] [stderr]    |                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:135:23
[INFO] [stderr]     |
[INFO] [stderr] 135 |         let diss: Box<Decoder> = Box::new(diss);
[INFO] [stderr]     |                       ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 135 -         let diss: Box<Decoder> = Box::new(diss);
[INFO] [stderr] 135 +         let diss: Box<dyn Decoder> = Box::new(diss);
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io.rs:34:25
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let writer: Box<Writer> = Box::new(writer);
[INFO] [stderr]    |                         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 34 -         let writer: Box<Writer> = Box::new(writer);
[INFO] [stderr] 34 +         let writer: Box<dyn Writer> = Box::new(writer);
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/io.rs:77:42
[INFO] [stderr]    |
[INFO] [stderr] 77 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stderr]    |                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:107:25
[INFO] [stderr]     |
[INFO] [stderr] 107 |         let reader: Box<Reader> = Box::new(reader);
[INFO] [stderr]     |                         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 107 -         let reader: Box<Reader> = Box::new(reader);
[INFO] [stderr] 107 +         let reader: Box<dyn Reader> = Box::new(reader);
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/io.rs:150:42
[INFO] [stderr]     |
[INFO] [stderr] 150 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/io.rs:288:42
[INFO] [stderr]     |
[INFO] [stderr] 288 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/io.rs:299:42
[INFO] [stderr]     |
[INFO] [stderr] 299 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/io.rs:321:42
[INFO] [stderr]     |
[INFO] [stderr] 321 |             unsafe { *err = Error::new(e.description()) };
[INFO] [stderr]     |                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the type `WriterWorkerBox` does not permit being left uninitialized
[INFO] [stderr]    --> src/io.rs:47:49
[INFO] [stderr]     |
[INFO] [stderr] 47  |         let mut out: WriterWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                                 |
[INFO] [stderr]     |                                                 this code causes undefined behavior when executed
[INFO] [stderr]     |                                                 help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] note: function pointers must be non-null (in this struct field)
[INFO] [stderr]    --> src/io.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     write: WriterFunc,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the type `ReaderWorkerBox` does not permit being left uninitialized
[INFO] [stderr]    --> src/io.rs:120:49
[INFO] [stderr]     |
[INFO] [stderr] 120 |         let mut out: ReaderWorkerBox = unsafe { mem::uninitialized() };
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                                 |
[INFO] [stderr]     |                                                 this code causes undefined behavior when executed
[INFO] [stderr]     |                                                 help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]     |
[INFO] [stderr] note: function pointers must be non-null (in this struct field)
[INFO] [stderr]    --> src/io.rs:230:5
[INFO] [stderr]     |
[INFO] [stderr] 230 |     read: ReaderFunc,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error`
[INFO] [stderr]    --> src/attr.rs:374:9
[INFO] [stderr]     |
[INFO] [stderr] 374 |         error,
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:47:34
[INFO] [stderr]    |
[INFO] [stderr] 47 |         assert_eq!(error::Error::description(&err), msg);
[INFO] [stderr]    |                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/decoder.rs:200:57
[INFO] [stderr]     |
[INFO] [stderr] 200 |             fn new_worker(&self, _ctx: &Context) -> Box<Worker> {
[INFO] [stderr]     |                                                         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 200 -             fn new_worker(&self, _ctx: &Context) -> Box<Worker> {
[INFO] [stderr] 200 +             fn new_worker(&self, _ctx: &Context) -> Box<dyn Worker> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/attr.rs:581:40
[INFO] [stderr]     |
[INFO] [stderr] 581 |             Err(err) => assert_eq!(err.description(), "oh no!"),
[INFO] [stderr]     |                                        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `genet-abi` (lib) generated 68 warnings
[INFO] [stderr] warning: `genet-abi` (lib test) generated 72 warnings (68 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/genet_abi-fde5178399748815)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test attr::tests::buffer ... ok
[INFO] [stdout] test attr::tests::bool ... ok
[INFO] [stdout] test layer::tests::id ... ok
[INFO] [stdout] test decoder::tests::decode ... ok
[INFO] [stdout] test attr::tests::u64 ... ok
[INFO] [stdout] test layer::tests::payloads ... ok
[INFO] [stdout] test layer::tests::data ... ok
[INFO] [stdout] test string::tests::as_str ... ok
[INFO] [stdout] test string::tests::eq ... ok
[INFO] [stdout] test attr::tests::string ... ok
[INFO] [stdout] test attr::tests::i64 ... ok
[INFO] [stdout] test attr::tests::error ... ok
[INFO] [stdout] test fixed::tests::new ... ok
[INFO] [stdout] test env::tests::token ... ok
[INFO] [stdout] test error::tests::description ... ok
[INFO] [stdout] test vec::tests::into_raw ... ok
[INFO] [stdout] test layer::tests::attrs ... ok
[INFO] [stdout] test vec::tests::push ... ok
[INFO] [stdout] test vec::tests::clone ... ok
[INFO] [stdout] test attr::tests::slice ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests genet-abi
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3a319fe5c914b19db9f3f5821b1e237350054b366d4996292f511d35c3c98daa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a319fe5c914b19db9f3f5821b1e237350054b366d4996292f511d35c3c98daa", kill_on_drop: false }`
[INFO] [stdout] 3a319fe5c914b19db9f3f5821b1e237350054b366d4996292f511d35c3c98daa