[INFO] fetching crate ia 0.1.2...
[INFO] testing ia-0.1.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate ia 0.1.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate ia 0.1.2 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 ia 0.1.2
[INFO] finished tweaking crates.io crate ia 0.1.2
[INFO] tweaked toml for crates.io crate ia 0.1.2 written to /workspace/builds/worker-9/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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 0d22ced41efc948952577606a71c74ebd1625cbb044e5a66b85db21e7fe8eb6b
[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" "0d22ced41efc948952577606a71c74ebd1625cbb044e5a66b85db21e7fe8eb6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d22ced41efc948952577606a71c74ebd1625cbb044e5a66b85db21e7fe8eb6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d22ced41efc948952577606a71c74ebd1625cbb044e5a66b85db21e7fe8eb6b", kill_on_drop: false }`
[INFO] [stdout] 0d22ced41efc948952577606a71c74ebd1625cbb044e5a66b85db21e7fe8eb6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] e2926120db46e28887413fa5cf82f49aa710b0f2db852c4ace87792412238ac3
[INFO] running `Command { std: "docker" "start" "-a" "e2926120db46e28887413fa5cf82f49aa710b0f2db852c4ace87792412238ac3", kill_on_drop: false }`
[INFO] [stderr]    Compiling ia v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]   --> src/raw.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::boxed::FnBox;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]  --> src/executor.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fut: UnsafeCell<Box<Future<Item = (), Error = !> + 'static>>
[INFO] [stdout]   |                                                   ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/executor.rs:11:47
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn new(fut: Box<Future<Item = (), Error = !> + 'static>) -> TaskInfo {
[INFO] [stdout]    |                                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/executor.rs:17:64
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn get_future(&self) -> &mut Box<Future<Item = (), Error = !> + 'static> {
[INFO] [stdout]    |                                                                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/utils.rs:14:18
[INFO] [stdout]    |
[INFO] [stdout] 14 |     type Error = !;
[INFO] [stdout]    |                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/utils.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ) -> Result<Async<()>, !> {
[INFO] [stdout]    |                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/net.rs:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 |     type Error = !;
[INFO] [stdout]    |                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]   --> src/net.rs:22:47
[INFO] [stdout]    |
[INFO] [stdout] 22 |     ) -> Result<Async<Option<TcpConnection>>, !> {
[INFO] [stdout]    |                                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 | #![feature(fnbox)]
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `fnbox`
[INFO] [stdout]   --> src/lib.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 | #![feature(fnbox)]
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 |         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 | impl_wrap_callback!();
[INFO] [stdout]     | --------------------- in this macro invocation
[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]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout] 170 +         impl WrapCallback for Box<dyn Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 |         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 204 | impl_wrap_callback!(a: i32, );
[INFO] [stdout]     | ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout] 170 +         impl WrapCallback for Box<dyn Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 |         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 | impl_wrap_callback!(a: i32, b: i32, );
[INFO] [stdout]     | ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout] 170 +         impl WrapCallback for Box<dyn Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 |         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 206 | impl_wrap_callback!(a: i32, b: i32, c: i32, );
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout] 170 +         impl WrapCallback for Box<dyn Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 |         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, );
[INFO] [stdout]     | ----------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout] 170 +         impl WrapCallback for Box<dyn Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 |         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 208 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, e: i32, );
[INFO] [stdout]     | ------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout] 170 +         impl WrapCallback for Box<dyn Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 |         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, e: i32, f: i32, );
[INFO] [stdout]     | --------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -         impl WrapCallback for Box<Fn($($arg_t, )*) -> i32> {
[INFO] [stdout] 170 +         impl WrapCallback for Box<dyn Fn($($arg_t, )*) -> i32> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/executor.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fut: UnsafeCell<Box<Future<Item = (), Error = !> + 'static>>
[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] 7 -     fut: UnsafeCell<Box<Future<Item = (), Error = !> + 'static>>
[INFO] [stdout] 7 +     fut: UnsafeCell<Box<dyn Future<Item = (), Error = !> + 'static>>
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/executor.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn new(fut: Box<Future<Item = (), Error = !> + 'static>) -> TaskInfo {
[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] 11 -     fn new(fut: Box<Future<Item = (), Error = !> + 'static>) -> TaskInfo {
[INFO] [stdout] 11 +     fn new(fut: Box<dyn Future<Item = (), Error = !> + 'static>) -> TaskInfo {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/executor.rs:17:38
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn get_future(&self) -> &mut Box<Future<Item = (), Error = !> + 'static> {
[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] 17 -     fn get_future(&self) -> &mut Box<Future<Item = (), Error = !> + 'static> {
[INFO] [stdout] 17 +     fn get_future(&self) -> &mut Box<dyn Future<Item = (), Error = !> + 'static> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:336:17
[INFO] [stdout]     |
[INFO] [stdout] 336 |     let cb: Box<Fn(i32) -> i32> = Box::new(move |stream_tid| {
[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] 336 -     let cb: Box<Fn(i32) -> i32> = Box::new(move |stream_tid| {
[INFO] [stdout] 336 +     let cb: Box<dyn Fn(i32) -> i32> = Box::new(move |stream_tid| {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 | impl_wrap_callback!();
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 180 -                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout] 180 +                 let f: Box<Box<dyn Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:175:33
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 | impl_wrap_callback!();
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout] 175 +                     let f: &Box<dyn Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:176:48
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 | impl_wrap_callback!();
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 -                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout] 176 +                         &* (addr as *const Box<dyn Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 204 | impl_wrap_callback!(a: i32, );
[INFO] [stdout]     | ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 180 -                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout] 180 +                 let f: Box<Box<dyn Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:175:33
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 204 | impl_wrap_callback!(a: i32, );
[INFO] [stdout]     | ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout] 175 +                     let f: &Box<dyn Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:176:48
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 204 | impl_wrap_callback!(a: i32, );
[INFO] [stdout]     | ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 -                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout] 176 +                         &* (addr as *const Box<dyn Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 | impl_wrap_callback!(a: i32, b: i32, );
[INFO] [stdout]     | ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 180 -                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout] 180 +                 let f: Box<Box<dyn Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:175:33
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 | impl_wrap_callback!(a: i32, b: i32, );
[INFO] [stdout]     | ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout] 175 +                     let f: &Box<dyn Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:176:48
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 | impl_wrap_callback!(a: i32, b: i32, );
[INFO] [stdout]     | ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 -                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout] 176 +                         &* (addr as *const Box<dyn Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 206 | impl_wrap_callback!(a: i32, b: i32, c: i32, );
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 180 -                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout] 180 +                 let f: Box<Box<dyn Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:175:33
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 206 | impl_wrap_callback!(a: i32, b: i32, c: i32, );
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout] 175 +                     let f: &Box<dyn Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:176:48
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 206 | impl_wrap_callback!(a: i32, b: i32, c: i32, );
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 -                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout] 176 +                         &* (addr as *const Box<dyn Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, );
[INFO] [stdout]     | ----------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 180 -                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout] 180 +                 let f: Box<Box<dyn Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:175:33
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, );
[INFO] [stdout]     | ----------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout] 175 +                     let f: &Box<dyn Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:176:48
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, );
[INFO] [stdout]     | ----------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 -                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout] 176 +                         &* (addr as *const Box<dyn Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 208 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, e: i32, );
[INFO] [stdout]     | ------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 180 -                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout] 180 +                 let f: Box<Box<dyn Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:175:33
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 208 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, e: i32, );
[INFO] [stdout]     | ------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout] 175 +                     let f: &Box<dyn Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:176:48
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 208 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, e: i32, );
[INFO] [stdout]     | ------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 -                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout] 176 +                         &* (addr as *const Box<dyn Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:180:32
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, e: i32, f: i32, );
[INFO] [stdout]     | --------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 180 -                 let f: Box<Box<Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout] 180 +                 let f: Box<Box<dyn Fn($($arg_t, )*) -> i32>> = Box::new(self);
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:175:33
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, e: i32, f: i32, );
[INFO] [stdout]     | --------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 -                     let f: &Box<Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout] 175 +                     let f: &Box<dyn Fn($($arg_t, )*) -> i32> = unsafe {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/raw.rs:176:48
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 | impl_wrap_callback!(a: i32, b: i32, c: i32, d: i32, e: i32, f: i32, );
[INFO] [stdout]     | --------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `impl_wrap_callback` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 176 -                         &* (addr as *const Box<Fn($($arg_t, )*) -> i32>)
[INFO] [stdout] 176 +                         &* (addr as *const Box<dyn Fn($($arg_t, )*) -> i32>)
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ia` due to 11 previous errors; 32 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e2926120db46e28887413fa5cf82f49aa710b0f2db852c4ace87792412238ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2926120db46e28887413fa5cf82f49aa710b0f2db852c4ace87792412238ac3", kill_on_drop: false }`
[INFO] [stdout] e2926120db46e28887413fa5cf82f49aa710b0f2db852c4ace87792412238ac3