[INFO] fetching crate quickcheck_seedable 0.3.1...
[INFO] testing quickcheck_seedable-0.3.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate quickcheck_seedable 0.3.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate quickcheck_seedable 0.3.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate quickcheck_seedable 0.3.1
[INFO] finished tweaking crates.io crate quickcheck_seedable 0.3.1
[INFO] tweaked toml for crates.io crate quickcheck_seedable 0.3.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.60.0" "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] c53835a650ac6d2e279a4fef8b8cc2c4dae3d50adf87a7ca1e58129af35f9e30
[INFO] running `Command { std: "docker" "start" "-a" "c53835a650ac6d2e279a4fef8b8cc2c4dae3d50adf87a7ca1e58129af35f9e30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c53835a650ac6d2e279a4fef8b8cc2c4dae3d50adf87a7ca1e58129af35f9e30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c53835a650ac6d2e279a4fef8b8cc2c4dae3d50adf87a7ca1e58129af35f9e30", kill_on_drop: false }`
[INFO] [stdout] c53835a650ac6d2e279a4fef8b8cc2c4dae3d50adf87a7ca1e58129af35f9e30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.60.0" "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] 7da608fbd275af1ccc38a29637b2ce360d29f37e9ea75805f844f28217edfbe8
[INFO] running `Command { std: "docker" "start" "-a" "7da608fbd275af1ccc38a29637b2ce360d29f37e9ea75805f844f28217edfbe8", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling quickcheck_seedable v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:420:14
[INFO] [stdout]     |
[INFO] [stdout] 420 |             0...49 => {
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:424:15
[INFO] [stdout]     |
[INFO] [stdout] 424 |             50...59 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:433:15
[INFO] [stdout]     |
[INFO] [stdout] 433 |             60...84 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:445:15
[INFO] [stdout]     |
[INFO] [stdout] 445 |             85...89 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:471:15
[INFO] [stdout]     |
[INFO] [stdout] 471 |             90...94 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:475:15
[INFO] [stdout]     |
[INFO] [stdout] 475 |             95...99 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/tester.rs:229:30
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn result<G: Gen>(&self, &mut G) -> TestResult;
[INFO] [stdout]     |                              ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut G`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:224:27
[INFO] [stdout]     |
[INFO] [stdout] 224 |     element_shrinker: Box<Iterator<Item=A>>
[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] 224 -     element_shrinker: Box<Iterator<Item=A>>
[INFO] [stdout] 224 +     element_shrinker: Box<dyn Iterator<Item=A>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:62:44
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn empty_shrinker<A: 'static>() -> Box<Iterator<Item=A>> {
[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] 62 - pub fn empty_shrinker<A: 'static>() -> Box<Iterator<Item=A>> {
[INFO] [stdout] 62 + pub fn empty_shrinker<A: 'static>() -> Box<dyn Iterator<Item=A>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:67:53
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn single_shrinker<A: 'static>(value: A) -> Box<Iterator<Item=A>> {
[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] 67 - pub fn single_shrinker<A: 'static>(value: A) -> Box<Iterator<Item=A>> {
[INFO] [stdout] 67 + pub fn single_shrinker<A: 'static>(value: A) -> Box<dyn Iterator<Item=A>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[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] 86 -     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout] 86 +     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:98:29
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn shrink(&self) -> Box<Iterator<Item=bool>> {
[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] 98 -     fn shrink(&self) -> Box<Iterator<Item=bool>> {
[INFO] [stdout] 98 +     fn shrink(&self) -> Box<dyn Iterator<Item=bool>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:117:30
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn shrink(&self)  -> Box<Iterator<Item=Option<A>>> {
[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 -     fn shrink(&self)  -> Box<Iterator<Item=Option<A>>> {
[INFO] [stdout] 117 +     fn shrink(&self)  -> Box<dyn Iterator<Item=Option<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:137:29
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn shrink(&self) -> Box<Iterator<Item=Result<A, B>>> {
[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] 137 -     fn shrink(&self) -> Box<Iterator<Item=Result<A, B>>> {
[INFO] [stdout] 137 +     fn shrink(&self) -> Box<dyn Iterator<Item=Result<A, B>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 185 | impl_arb_for_tuple!((a, A));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 | impl_arb_for_tuple!((a, A), (b, B));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_arb_for_tuple!((a, A), (b, B), (c, C));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 189 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 190 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 191 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 192 | |                     (g, G));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 194 | |                     (g, G), (h, H));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 195 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 196 | |                     (g, G), (h, H), (i, I));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 197 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 198 | |                     (g, G), (h, H), (i, I), (j, J));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 200 | |                     (g, G), (h, H), (i, I), (j, J), (k, K));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 202 | |                     (g, G), (h, H), (i, I), (j, J), (k, K), (l, L));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:210:29
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn shrink(&self) -> Box<Iterator<Item=Vec<A>>> {
[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] 210 -     fn shrink(&self) -> Box<Iterator<Item=Vec<A>>> {
[INFO] [stdout] 210 +     fn shrink(&self) -> Box<dyn Iterator<Item=Vec<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:229:33
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn new(seed: Vec<A>) -> Box<Iterator<Item=Vec<A>>> {
[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 -     fn new(seed: Vec<A>) -> Box<Iterator<Item=Vec<A>>> {
[INFO] [stdout] 229 +     fn new(seed: Vec<A>) -> Box<dyn Iterator<Item=Vec<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:316:29
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn shrink(&self) -> Box<Iterator<Item=BTreeMap<K, V>>> {
[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] 316 -     fn shrink(&self) -> Box<Iterator<Item=BTreeMap<K, V>>> {
[INFO] [stdout] 316 +     fn shrink(&self) -> Box<dyn Iterator<Item=BTreeMap<K, V>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:329:29
[INFO] [stdout]     |
[INFO] [stdout] 329 |     fn shrink(&self) -> Box<Iterator<Item=HashMap<K, V>>> {
[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] 329 -     fn shrink(&self) -> Box<Iterator<Item=HashMap<K, V>>> {
[INFO] [stdout] 329 +     fn shrink(&self) -> Box<dyn Iterator<Item=HashMap<K, V>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:342:29
[INFO] [stdout]     |
[INFO] [stdout] 342 |     fn shrink(&self) -> Box<Iterator<Item=BTreeSet<T>>> {
[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] 342 -     fn shrink(&self) -> Box<Iterator<Item=BTreeSet<T>>> {
[INFO] [stdout] 342 +     fn shrink(&self) -> Box<dyn Iterator<Item=BTreeSet<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:354:29
[INFO] [stdout]     |
[INFO] [stdout] 354 |     fn shrink(&self) -> Box<Iterator<Item=BinaryHeap<T>>> {
[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] 354 -     fn shrink(&self) -> Box<Iterator<Item=BinaryHeap<T>>> {
[INFO] [stdout] 354 +     fn shrink(&self) -> Box<dyn Iterator<Item=BinaryHeap<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:367:29
[INFO] [stdout]     |
[INFO] [stdout] 367 |     fn shrink(&self) -> Box<Iterator<Item=HashSet<T>>> {
[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] 367 -     fn shrink(&self) -> Box<Iterator<Item=HashSet<T>>> {
[INFO] [stdout] 367 +     fn shrink(&self) -> Box<dyn Iterator<Item=HashSet<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:379:29
[INFO] [stdout]     |
[INFO] [stdout] 379 |     fn shrink(&self) -> Box<Iterator<Item=LinkedList<T>>> {
[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] 379 -     fn shrink(&self) -> Box<Iterator<Item=LinkedList<T>>> {
[INFO] [stdout] 379 +     fn shrink(&self) -> Box<dyn Iterator<Item=LinkedList<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:392:29
[INFO] [stdout]     |
[INFO] [stdout] 392 |     fn shrink(&self) -> Box<Iterator<Item=VecDeque<T>>> {
[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] 392 -     fn shrink(&self) -> Box<Iterator<Item=VecDeque<T>>> {
[INFO] [stdout] 392 +     fn shrink(&self) -> Box<dyn Iterator<Item=VecDeque<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:409:29
[INFO] [stdout]     |
[INFO] [stdout] 409 |     fn shrink(&self) -> Box<Iterator<Item=String>> {
[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] 409 -     fn shrink(&self) -> Box<Iterator<Item=String>> {
[INFO] [stdout] 409 +     fn shrink(&self) -> Box<dyn Iterator<Item=String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:483:29
[INFO] [stdout]     |
[INFO] [stdout] 483 |     fn shrink(&self) -> Box<Iterator<Item=char>> {
[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] 483 -     fn shrink(&self) -> Box<Iterator<Item=char>> {
[INFO] [stdout] 483 +     fn shrink(&self) -> Box<dyn Iterator<Item=char>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:539:41
[INFO] [stdout]     |
[INFO] [stdout] 539 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 539 -                 fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 539 +                 fn shrink(&self) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 602 -                 fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 602 +                 fn shrink(&self) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:619:29
[INFO] [stdout]     |
[INFO] [stdout] 619 |     fn shrink(&self) -> Box<Iterator<Item=f32>> {
[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] 619 -     fn shrink(&self) -> Box<Iterator<Item=f32>> {
[INFO] [stdout] 619 +     fn shrink(&self) -> Box<dyn Iterator<Item=f32>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:630:29
[INFO] [stdout]     |
[INFO] [stdout] 630 |     fn shrink(&self) -> Box<Iterator<Item=f64>> {
[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] 630 -     fn shrink(&self) -> Box<Iterator<Item=f64>> {
[INFO] [stdout] 630 +     fn shrink(&self) -> Box<dyn Iterator<Item=f64>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:641:29
[INFO] [stdout]     |
[INFO] [stdout] 641 |     fn shrink(&self) -> Box<Iterator<Item=Range<T>>> {
[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] 641 -     fn shrink(&self) -> Box<Iterator<Item=Range<T>>> {
[INFO] [stdout] 641 +     fn shrink(&self) -> Box<dyn Iterator<Item=Range<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:652:29
[INFO] [stdout]     |
[INFO] [stdout] 652 |     fn shrink(&self) -> Box<Iterator<Item=RangeFrom<T>>> {
[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] 652 -     fn shrink(&self) -> Box<Iterator<Item=RangeFrom<T>>> {
[INFO] [stdout] 652 +     fn shrink(&self) -> Box<dyn Iterator<Item=RangeFrom<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:661:29
[INFO] [stdout]     |
[INFO] [stdout] 661 |     fn shrink(&self) -> Box<Iterator<Item=RangeTo<T>>> {
[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] 661 -     fn shrink(&self) -> Box<Iterator<Item=RangeTo<T>>> {
[INFO] [stdout] 661 +     fn shrink(&self) -> Box<dyn Iterator<Item=RangeTo<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:677:29
[INFO] [stdout]     |
[INFO] [stdout] 677 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[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] 677 -     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout] 677 +     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 620 |         signed_shrinker!(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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 631 |         signed_shrinker!(i64);
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/tester.rs:118:35
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Err(result) => panic!(result.failed_msg()),
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Err(result) => panic!("{}", result.failed_msg()),
[INFO] [stdout]     |                                   +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 58 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.39s
[INFO] running `Command { std: "docker" "inspect" "7da608fbd275af1ccc38a29637b2ce360d29f37e9ea75805f844f28217edfbe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7da608fbd275af1ccc38a29637b2ce360d29f37e9ea75805f844f28217edfbe8", kill_on_drop: false }`
[INFO] [stdout] 7da608fbd275af1ccc38a29637b2ce360d29f37e9ea75805f844f28217edfbe8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1ec6272e46a58bc17341b3a149f625e21b421436c0bb12a112c0a6980e81ba7
[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" "e1ec6272e46a58bc17341b3a149f625e21b421436c0bb12a112c0a6980e81ba7", kill_on_drop: false }`
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:420:14
[INFO] [stdout]     |
[INFO] [stdout] 420 |             0...49 => {
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:424:15
[INFO] [stdout]     |
[INFO] [stdout] 424 |             50...59 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:433:15
[INFO] [stdout]     |
[INFO] [stdout] 433 |             60...84 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:445:15
[INFO] [stdout]     |
[INFO] [stdout] 445 |             85...89 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:471:15
[INFO] [stdout]     |
[INFO] [stdout] 471 |             90...94 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:475:15
[INFO] [stdout]     |
[INFO] [stdout] 475 |             95...99 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/tester.rs:229:30
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn result<G: Gen>(&self, &mut G) -> TestResult;
[INFO] [stdout]     |                              ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut G`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:224:27
[INFO] [stdout]     |
[INFO] [stdout] 224 |     element_shrinker: Box<Iterator<Item=A>>
[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] 224 -     element_shrinker: Box<Iterator<Item=A>>
[INFO] [stdout] 224 +     element_shrinker: Box<dyn Iterator<Item=A>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:62:44
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn empty_shrinker<A: 'static>() -> Box<Iterator<Item=A>> {
[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] 62 - pub fn empty_shrinker<A: 'static>() -> Box<Iterator<Item=A>> {
[INFO] [stdout] 62 + pub fn empty_shrinker<A: 'static>() -> Box<dyn Iterator<Item=A>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:67:53
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn single_shrinker<A: 'static>(value: A) -> Box<Iterator<Item=A>> {
[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] 67 - pub fn single_shrinker<A: 'static>(value: A) -> Box<Iterator<Item=A>> {
[INFO] [stdout] 67 + pub fn single_shrinker<A: 'static>(value: A) -> Box<dyn Iterator<Item=A>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[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] 86 -     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout] 86 +     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:98:29
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn shrink(&self) -> Box<Iterator<Item=bool>> {
[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] 98 -     fn shrink(&self) -> Box<Iterator<Item=bool>> {
[INFO] [stdout] 98 +     fn shrink(&self) -> Box<dyn Iterator<Item=bool>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:117:30
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn shrink(&self)  -> Box<Iterator<Item=Option<A>>> {
[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 -     fn shrink(&self)  -> Box<Iterator<Item=Option<A>>> {
[INFO] [stdout] 117 +     fn shrink(&self)  -> Box<dyn Iterator<Item=Option<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:137:29
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn shrink(&self) -> Box<Iterator<Item=Result<A, B>>> {
[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] 137 -     fn shrink(&self) -> Box<Iterator<Item=Result<A, B>>> {
[INFO] [stdout] 137 +     fn shrink(&self) -> Box<dyn Iterator<Item=Result<A, B>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 185 | impl_arb_for_tuple!((a, A));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 | impl_arb_for_tuple!((a, A), (b, B));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_arb_for_tuple!((a, A), (b, B), (c, C));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 189 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 190 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 191 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 192 | |                     (g, G));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 194 | |                     (g, G), (h, H));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 195 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 196 | |                     (g, G), (h, H), (i, I));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 197 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 198 | |                     (g, G), (h, H), (i, I), (j, J));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 200 | |                     (g, G), (h, H), (i, I), (j, J), (k, K));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 202 | |                     (g, G), (h, H), (i, I), (j, J), (k, K), (l, L));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:210:29
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn shrink(&self) -> Box<Iterator<Item=Vec<A>>> {
[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] 210 -     fn shrink(&self) -> Box<Iterator<Item=Vec<A>>> {
[INFO] [stdout] 210 +     fn shrink(&self) -> Box<dyn Iterator<Item=Vec<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:229:33
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn new(seed: Vec<A>) -> Box<Iterator<Item=Vec<A>>> {
[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 -     fn new(seed: Vec<A>) -> Box<Iterator<Item=Vec<A>>> {
[INFO] [stdout] 229 +     fn new(seed: Vec<A>) -> Box<dyn Iterator<Item=Vec<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:316:29
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn shrink(&self) -> Box<Iterator<Item=BTreeMap<K, V>>> {
[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] 316 -     fn shrink(&self) -> Box<Iterator<Item=BTreeMap<K, V>>> {
[INFO] [stdout] 316 +     fn shrink(&self) -> Box<dyn Iterator<Item=BTreeMap<K, V>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:329:29
[INFO] [stdout]     |
[INFO] [stdout] 329 |     fn shrink(&self) -> Box<Iterator<Item=HashMap<K, V>>> {
[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] 329 -     fn shrink(&self) -> Box<Iterator<Item=HashMap<K, V>>> {
[INFO] [stdout] 329 +     fn shrink(&self) -> Box<dyn Iterator<Item=HashMap<K, V>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:342:29
[INFO] [stdout]     |
[INFO] [stdout] 342 |     fn shrink(&self) -> Box<Iterator<Item=BTreeSet<T>>> {
[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] 342 -     fn shrink(&self) -> Box<Iterator<Item=BTreeSet<T>>> {
[INFO] [stdout] 342 +     fn shrink(&self) -> Box<dyn Iterator<Item=BTreeSet<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:354:29
[INFO] [stdout]     |
[INFO] [stdout] 354 |     fn shrink(&self) -> Box<Iterator<Item=BinaryHeap<T>>> {
[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] 354 -     fn shrink(&self) -> Box<Iterator<Item=BinaryHeap<T>>> {
[INFO] [stdout] 354 +     fn shrink(&self) -> Box<dyn Iterator<Item=BinaryHeap<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:367:29
[INFO] [stdout]     |
[INFO] [stdout] 367 |     fn shrink(&self) -> Box<Iterator<Item=HashSet<T>>> {
[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] 367 -     fn shrink(&self) -> Box<Iterator<Item=HashSet<T>>> {
[INFO] [stdout] 367 +     fn shrink(&self) -> Box<dyn Iterator<Item=HashSet<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:379:29
[INFO] [stdout]     |
[INFO] [stdout] 379 |     fn shrink(&self) -> Box<Iterator<Item=LinkedList<T>>> {
[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] 379 -     fn shrink(&self) -> Box<Iterator<Item=LinkedList<T>>> {
[INFO] [stdout] 379 +     fn shrink(&self) -> Box<dyn Iterator<Item=LinkedList<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:392:29
[INFO] [stdout]     |
[INFO] [stdout] 392 |     fn shrink(&self) -> Box<Iterator<Item=VecDeque<T>>> {
[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] 392 -     fn shrink(&self) -> Box<Iterator<Item=VecDeque<T>>> {
[INFO] [stdout] 392 +     fn shrink(&self) -> Box<dyn Iterator<Item=VecDeque<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:409:29
[INFO] [stdout]     |
[INFO] [stdout] 409 |     fn shrink(&self) -> Box<Iterator<Item=String>> {
[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] 409 -     fn shrink(&self) -> Box<Iterator<Item=String>> {
[INFO] [stdout] 409 +     fn shrink(&self) -> Box<dyn Iterator<Item=String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:483:29
[INFO] [stdout]     |
[INFO] [stdout] 483 |     fn shrink(&self) -> Box<Iterator<Item=char>> {
[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] 483 -     fn shrink(&self) -> Box<Iterator<Item=char>> {
[INFO] [stdout] 483 +     fn shrink(&self) -> Box<dyn Iterator<Item=char>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:539:41
[INFO] [stdout]     |
[INFO] [stdout] 539 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 539 -                 fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 539 +                 fn shrink(&self) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 602 -                 fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 602 +                 fn shrink(&self) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:619:29
[INFO] [stdout]     |
[INFO] [stdout] 619 |     fn shrink(&self) -> Box<Iterator<Item=f32>> {
[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] 619 -     fn shrink(&self) -> Box<Iterator<Item=f32>> {
[INFO] [stdout] 619 +     fn shrink(&self) -> Box<dyn Iterator<Item=f32>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:630:29
[INFO] [stdout]     |
[INFO] [stdout] 630 |     fn shrink(&self) -> Box<Iterator<Item=f64>> {
[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] 630 -     fn shrink(&self) -> Box<Iterator<Item=f64>> {
[INFO] [stdout] 630 +     fn shrink(&self) -> Box<dyn Iterator<Item=f64>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:641:29
[INFO] [stdout]     |
[INFO] [stdout] 641 |     fn shrink(&self) -> Box<Iterator<Item=Range<T>>> {
[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] 641 -     fn shrink(&self) -> Box<Iterator<Item=Range<T>>> {
[INFO] [stdout] 641 +     fn shrink(&self) -> Box<dyn Iterator<Item=Range<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:652:29
[INFO] [stdout]     |
[INFO] [stdout] 652 |     fn shrink(&self) -> Box<Iterator<Item=RangeFrom<T>>> {
[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] 652 -     fn shrink(&self) -> Box<Iterator<Item=RangeFrom<T>>> {
[INFO] [stdout] 652 +     fn shrink(&self) -> Box<dyn Iterator<Item=RangeFrom<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:661:29
[INFO] [stdout]     |
[INFO] [stdout] 661 |     fn shrink(&self) -> Box<Iterator<Item=RangeTo<T>>> {
[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] 661 -     fn shrink(&self) -> Box<Iterator<Item=RangeTo<T>>> {
[INFO] [stdout] 661 +     fn shrink(&self) -> Box<dyn Iterator<Item=RangeTo<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:677:29
[INFO] [stdout]     |
[INFO] [stdout] 677 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[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] 677 -     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout] 677 +     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quickcheck_seedable v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 620 |         signed_shrinker!(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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 631 |         signed_shrinker!(i64);
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/tester.rs:118:35
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Err(result) => panic!(result.failed_msg()),
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Err(result) => panic!("{}", result.failed_msg()),
[INFO] [stdout]     |                                   +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 58 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:420:14
[INFO] [stdout]     |
[INFO] [stdout] 420 |             0...49 => {
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:424:15
[INFO] [stdout]     |
[INFO] [stdout] 424 |             50...59 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:433:15
[INFO] [stdout]     |
[INFO] [stdout] 433 |             60...84 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:445:15
[INFO] [stdout]     |
[INFO] [stdout] 445 |             85...89 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:471:15
[INFO] [stdout]     |
[INFO] [stdout] 471 |             90...94 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:475:15
[INFO] [stdout]     |
[INFO] [stdout] 475 |             95...99 => {
[INFO] [stdout]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/tester.rs:229:30
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn result<G: Gen>(&self, &mut G) -> TestResult;
[INFO] [stdout]     |                              ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut G`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:224:27
[INFO] [stdout]     |
[INFO] [stdout] 224 |     element_shrinker: Box<Iterator<Item=A>>
[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] 224 -     element_shrinker: Box<Iterator<Item=A>>
[INFO] [stdout] 224 +     element_shrinker: Box<dyn Iterator<Item=A>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:62:44
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn empty_shrinker<A: 'static>() -> Box<Iterator<Item=A>> {
[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] 62 - pub fn empty_shrinker<A: 'static>() -> Box<Iterator<Item=A>> {
[INFO] [stdout] 62 + pub fn empty_shrinker<A: 'static>() -> Box<dyn Iterator<Item=A>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:67:53
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn single_shrinker<A: 'static>(value: A) -> Box<Iterator<Item=A>> {
[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] 67 - pub fn single_shrinker<A: 'static>(value: A) -> Box<Iterator<Item=A>> {
[INFO] [stdout] 67 + pub fn single_shrinker<A: 'static>(value: A) -> Box<dyn Iterator<Item=A>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[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] 86 -     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout] 86 +     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/arbitrary.rs:98:29
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn shrink(&self) -> Box<Iterator<Item=bool>> {
[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] 98 -     fn shrink(&self) -> Box<Iterator<Item=bool>> {
[INFO] [stdout] 98 +     fn shrink(&self) -> Box<dyn Iterator<Item=bool>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:117:30
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn shrink(&self)  -> Box<Iterator<Item=Option<A>>> {
[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 -     fn shrink(&self)  -> Box<Iterator<Item=Option<A>>> {
[INFO] [stdout] 117 +     fn shrink(&self)  -> Box<dyn Iterator<Item=Option<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:137:29
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn shrink(&self) -> Box<Iterator<Item=Result<A, B>>> {
[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] 137 -     fn shrink(&self) -> Box<Iterator<Item=Result<A, B>>> {
[INFO] [stdout] 137 +     fn shrink(&self) -> Box<dyn Iterator<Item=Result<A, B>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 185 | impl_arb_for_tuple!((a, A));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 186 | impl_arb_for_tuple!((a, A), (b, B));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_arb_for_tuple!((a, A), (b, B), (c, C));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 189 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 190 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 191 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 192 | |                     (g, G));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 194 | |                     (g, G), (h, H));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 195 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 196 | |                     (g, G), (h, H), (i, I));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 197 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 198 | |                     (g, G), (h, H), (i, I), (j, J));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 200 | |                     (g, G), (h, H), (i, I), (j, J), (k, K));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:168:29
[INFO] [stdout]     |
[INFO] [stdout] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stdout] 202 | |                     (g, G), (h, H), (i, I), (j, J), (k, K), (l, L));
[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_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:210:29
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn shrink(&self) -> Box<Iterator<Item=Vec<A>>> {
[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] 210 -     fn shrink(&self) -> Box<Iterator<Item=Vec<A>>> {
[INFO] [stdout] 210 +     fn shrink(&self) -> Box<dyn Iterator<Item=Vec<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:229:33
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn new(seed: Vec<A>) -> Box<Iterator<Item=Vec<A>>> {
[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 -     fn new(seed: Vec<A>) -> Box<Iterator<Item=Vec<A>>> {
[INFO] [stdout] 229 +     fn new(seed: Vec<A>) -> Box<dyn Iterator<Item=Vec<A>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:316:29
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn shrink(&self) -> Box<Iterator<Item=BTreeMap<K, V>>> {
[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] 316 -     fn shrink(&self) -> Box<Iterator<Item=BTreeMap<K, V>>> {
[INFO] [stdout] 316 +     fn shrink(&self) -> Box<dyn Iterator<Item=BTreeMap<K, V>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:329:29
[INFO] [stdout]     |
[INFO] [stdout] 329 |     fn shrink(&self) -> Box<Iterator<Item=HashMap<K, V>>> {
[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] 329 -     fn shrink(&self) -> Box<Iterator<Item=HashMap<K, V>>> {
[INFO] [stdout] 329 +     fn shrink(&self) -> Box<dyn Iterator<Item=HashMap<K, V>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:342:29
[INFO] [stdout]     |
[INFO] [stdout] 342 |     fn shrink(&self) -> Box<Iterator<Item=BTreeSet<T>>> {
[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] 342 -     fn shrink(&self) -> Box<Iterator<Item=BTreeSet<T>>> {
[INFO] [stdout] 342 +     fn shrink(&self) -> Box<dyn Iterator<Item=BTreeSet<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:354:29
[INFO] [stdout]     |
[INFO] [stdout] 354 |     fn shrink(&self) -> Box<Iterator<Item=BinaryHeap<T>>> {
[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] 354 -     fn shrink(&self) -> Box<Iterator<Item=BinaryHeap<T>>> {
[INFO] [stdout] 354 +     fn shrink(&self) -> Box<dyn Iterator<Item=BinaryHeap<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:367:29
[INFO] [stdout]     |
[INFO] [stdout] 367 |     fn shrink(&self) -> Box<Iterator<Item=HashSet<T>>> {
[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] 367 -     fn shrink(&self) -> Box<Iterator<Item=HashSet<T>>> {
[INFO] [stdout] 367 +     fn shrink(&self) -> Box<dyn Iterator<Item=HashSet<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:379:29
[INFO] [stdout]     |
[INFO] [stdout] 379 |     fn shrink(&self) -> Box<Iterator<Item=LinkedList<T>>> {
[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] 379 -     fn shrink(&self) -> Box<Iterator<Item=LinkedList<T>>> {
[INFO] [stdout] 379 +     fn shrink(&self) -> Box<dyn Iterator<Item=LinkedList<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:392:29
[INFO] [stdout]     |
[INFO] [stdout] 392 |     fn shrink(&self) -> Box<Iterator<Item=VecDeque<T>>> {
[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] 392 -     fn shrink(&self) -> Box<Iterator<Item=VecDeque<T>>> {
[INFO] [stdout] 392 +     fn shrink(&self) -> Box<dyn Iterator<Item=VecDeque<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:409:29
[INFO] [stdout]     |
[INFO] [stdout] 409 |     fn shrink(&self) -> Box<Iterator<Item=String>> {
[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] 409 -     fn shrink(&self) -> Box<Iterator<Item=String>> {
[INFO] [stdout] 409 +     fn shrink(&self) -> Box<dyn Iterator<Item=String>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:483:29
[INFO] [stdout]     |
[INFO] [stdout] 483 |     fn shrink(&self) -> Box<Iterator<Item=char>> {
[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] 483 -     fn shrink(&self) -> Box<Iterator<Item=char>> {
[INFO] [stdout] 483 +     fn shrink(&self) -> Box<dyn Iterator<Item=char>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:539:41
[INFO] [stdout]     |
[INFO] [stdout] 539 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 539 -                 fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 539 +                 fn shrink(&self) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 602 -                 fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 602 +                 fn shrink(&self) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:619:29
[INFO] [stdout]     |
[INFO] [stdout] 619 |     fn shrink(&self) -> Box<Iterator<Item=f32>> {
[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] 619 -     fn shrink(&self) -> Box<Iterator<Item=f32>> {
[INFO] [stdout] 619 +     fn shrink(&self) -> Box<dyn Iterator<Item=f32>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:630:29
[INFO] [stdout]     |
[INFO] [stdout] 630 |     fn shrink(&self) -> Box<Iterator<Item=f64>> {
[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] 630 -     fn shrink(&self) -> Box<Iterator<Item=f64>> {
[INFO] [stdout] 630 +     fn shrink(&self) -> Box<dyn Iterator<Item=f64>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:641:29
[INFO] [stdout]     |
[INFO] [stdout] 641 |     fn shrink(&self) -> Box<Iterator<Item=Range<T>>> {
[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] 641 -     fn shrink(&self) -> Box<Iterator<Item=Range<T>>> {
[INFO] [stdout] 641 +     fn shrink(&self) -> Box<dyn Iterator<Item=Range<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:652:29
[INFO] [stdout]     |
[INFO] [stdout] 652 |     fn shrink(&self) -> Box<Iterator<Item=RangeFrom<T>>> {
[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] 652 -     fn shrink(&self) -> Box<Iterator<Item=RangeFrom<T>>> {
[INFO] [stdout] 652 +     fn shrink(&self) -> Box<dyn Iterator<Item=RangeFrom<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:661:29
[INFO] [stdout]     |
[INFO] [stdout] 661 |     fn shrink(&self) -> Box<Iterator<Item=RangeTo<T>>> {
[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] 661 -     fn shrink(&self) -> Box<Iterator<Item=RangeTo<T>>> {
[INFO] [stdout] 661 +     fn shrink(&self) -> Box<dyn Iterator<Item=RangeTo<T>>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:677:29
[INFO] [stdout]     |
[INFO] [stdout] 677 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[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] 677 -     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout] 677 +     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:497:43
[INFO] [stdout]     |
[INFO] [stdout] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[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 `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 611 | / signed_arbitrary! {
[INFO] [stdout] 612 | |     isize, i8, i16, i32, i64
[INFO] [stdout] 613 | | }
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 620 |         signed_shrinker!(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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:561:43
[INFO] [stdout]     |
[INFO] [stdout] 561 |                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 631 |         signed_shrinker!(i64);
[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 `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/tester.rs:118:35
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Err(result) => panic!(result.failed_msg()),
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Err(result) => panic!("{}", result.failed_msg()),
[INFO] [stdout]     |                                   +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 58 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.67s
[INFO] running `Command { std: "docker" "inspect" "e1ec6272e46a58bc17341b3a149f625e21b421436c0bb12a112c0a6980e81ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1ec6272e46a58bc17341b3a149f625e21b421436c0bb12a112c0a6980e81ba7", kill_on_drop: false }`
[INFO] [stdout] e1ec6272e46a58bc17341b3a149f625e21b421436c0bb12a112c0a6980e81ba7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.60.0" "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] 7696175f07f4dfde6291c58582400806bc1949b51260efa1a98580ddd455bd63
[INFO] running `Command { std: "docker" "start" "-a" "7696175f07f4dfde6291c58582400806bc1949b51260efa1a98580ddd455bd63", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:420:14
[INFO] [stderr]     |
[INFO] [stderr] 420 |             0...49 => {
[INFO] [stderr]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:424:15
[INFO] [stderr]     |
[INFO] [stderr] 424 |             50...59 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:433:15
[INFO] [stderr]     |
[INFO] [stderr] 433 |             60...84 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:445:15
[INFO] [stderr]     |
[INFO] [stderr] 445 |             85...89 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:471:15
[INFO] [stderr]     |
[INFO] [stderr] 471 |             90...94 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:475:15
[INFO] [stderr]     |
[INFO] [stderr] 475 |             95...99 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]    --> src/tester.rs:229:30
[INFO] [stderr]     |
[INFO] [stderr] 229 |     fn result<G: Gen>(&self, &mut G) -> TestResult;
[INFO] [stderr]     |                              ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut G`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:224:27
[INFO] [stderr]     |
[INFO] [stderr] 224 |     element_shrinker: Box<Iterator<Item=A>>
[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] 224 -     element_shrinker: Box<Iterator<Item=A>>
[INFO] [stderr] 224 +     element_shrinker: Box<dyn Iterator<Item=A>>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/arbitrary.rs:62:44
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn empty_shrinker<A: 'static>() -> Box<Iterator<Item=A>> {
[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] 62 - pub fn empty_shrinker<A: 'static>() -> Box<Iterator<Item=A>> {
[INFO] [stderr] 62 + pub fn empty_shrinker<A: 'static>() -> Box<dyn Iterator<Item=A>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/arbitrary.rs:67:53
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn single_shrinker<A: 'static>(value: A) -> Box<Iterator<Item=A>> {
[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] 67 - pub fn single_shrinker<A: 'static>(value: A) -> Box<Iterator<Item=A>> {
[INFO] [stderr] 67 + pub fn single_shrinker<A: 'static>(value: A) -> Box<dyn Iterator<Item=A>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/arbitrary.rs:86:29
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[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] 86 -     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stderr] 86 +     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/arbitrary.rs:98:29
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn shrink(&self) -> Box<Iterator<Item=bool>> {
[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] 98 -     fn shrink(&self) -> Box<Iterator<Item=bool>> {
[INFO] [stderr] 98 +     fn shrink(&self) -> Box<dyn Iterator<Item=bool>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:117:30
[INFO] [stderr]     |
[INFO] [stderr] 117 |     fn shrink(&self)  -> Box<Iterator<Item=Option<A>>> {
[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 -     fn shrink(&self)  -> Box<Iterator<Item=Option<A>>> {
[INFO] [stderr] 117 +     fn shrink(&self)  -> Box<dyn Iterator<Item=Option<A>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:137:29
[INFO] [stderr]     |
[INFO] [stderr] 137 |     fn shrink(&self) -> Box<Iterator<Item=Result<A, B>>> {
[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] 137 -     fn shrink(&self) -> Box<Iterator<Item=Result<A, B>>> {
[INFO] [stderr] 137 +     fn shrink(&self) -> Box<dyn Iterator<Item=Result<A, B>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 185 | impl_arb_for_tuple!((a, A));
[INFO] [stderr]     | --------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 186 | impl_arb_for_tuple!((a, A), (b, B));
[INFO] [stderr]     | ----------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_arb_for_tuple!((a, A), (b, B), (c, C));
[INFO] [stderr]     | ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 188 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D));
[INFO] [stderr]     | --------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 189 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E));
[INFO] [stderr]     | ----------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 190 | impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F));
[INFO] [stderr]     | ------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 191 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stderr] 192 | |                     (g, G));
[INFO] [stderr]     | |___________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 193 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stderr] 194 | |                     (g, G), (h, H));
[INFO] [stderr]     | |___________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 195 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stderr] 196 | |                     (g, G), (h, H), (i, I));
[INFO] [stderr]     | |___________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 197 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stderr] 198 | |                     (g, G), (h, H), (i, I), (j, J));
[INFO] [stderr]     | |___________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 199 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stderr] 200 | |                     (g, G), (h, H), (i, I), (j, J), (k, K));
[INFO] [stderr]     | |___________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:168:29
[INFO] [stderr]     |
[INFO] [stderr] 168 |                        -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 201 | / impl_arb_for_tuple!((a, A), (b, B), (c, C), (d, D), (e, E), (f, F),
[INFO] [stderr] 202 | |                     (g, G), (h, H), (i, I), (j, J), (k, K), (l, L));
[INFO] [stderr]     | |___________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 168 -                      -> Box<Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr] 168 +                      -> Box<dyn Iterator<Item=($type_a, $($type_n),*)>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:210:29
[INFO] [stderr]     |
[INFO] [stderr] 210 |     fn shrink(&self) -> Box<Iterator<Item=Vec<A>>> {
[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] 210 -     fn shrink(&self) -> Box<Iterator<Item=Vec<A>>> {
[INFO] [stderr] 210 +     fn shrink(&self) -> Box<dyn Iterator<Item=Vec<A>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:229:33
[INFO] [stderr]     |
[INFO] [stderr] 229 |     fn new(seed: Vec<A>) -> Box<Iterator<Item=Vec<A>>> {
[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 -     fn new(seed: Vec<A>) -> Box<Iterator<Item=Vec<A>>> {
[INFO] [stderr] 229 +     fn new(seed: Vec<A>) -> Box<dyn Iterator<Item=Vec<A>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:316:29
[INFO] [stderr]     |
[INFO] [stderr] 316 |     fn shrink(&self) -> Box<Iterator<Item=BTreeMap<K, V>>> {
[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] 316 -     fn shrink(&self) -> Box<Iterator<Item=BTreeMap<K, V>>> {
[INFO] [stderr] 316 +     fn shrink(&self) -> Box<dyn Iterator<Item=BTreeMap<K, V>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:329:29
[INFO] [stderr]     |
[INFO] [stderr] 329 |     fn shrink(&self) -> Box<Iterator<Item=HashMap<K, V>>> {
[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] 329 -     fn shrink(&self) -> Box<Iterator<Item=HashMap<K, V>>> {
[INFO] [stderr] 329 +     fn shrink(&self) -> Box<dyn Iterator<Item=HashMap<K, V>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:342:29
[INFO] [stderr]     |
[INFO] [stderr] 342 |     fn shrink(&self) -> Box<Iterator<Item=BTreeSet<T>>> {
[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] 342 -     fn shrink(&self) -> Box<Iterator<Item=BTreeSet<T>>> {
[INFO] [stderr] 342 +     fn shrink(&self) -> Box<dyn Iterator<Item=BTreeSet<T>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:354:29
[INFO] [stderr]     |
[INFO] [stderr] 354 |     fn shrink(&self) -> Box<Iterator<Item=BinaryHeap<T>>> {
[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] 354 -     fn shrink(&self) -> Box<Iterator<Item=BinaryHeap<T>>> {
[INFO] [stderr] 354 +     fn shrink(&self) -> Box<dyn Iterator<Item=BinaryHeap<T>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:367:29
[INFO] [stderr]     |
[INFO] [stderr] 367 |     fn shrink(&self) -> Box<Iterator<Item=HashSet<T>>> {
[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] 367 -     fn shrink(&self) -> Box<Iterator<Item=HashSet<T>>> {
[INFO] [stderr] 367 +     fn shrink(&self) -> Box<dyn Iterator<Item=HashSet<T>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:379:29
[INFO] [stderr]     |
[INFO] [stderr] 379 |     fn shrink(&self) -> Box<Iterator<Item=LinkedList<T>>> {
[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] 379 -     fn shrink(&self) -> Box<Iterator<Item=LinkedList<T>>> {
[INFO] [stderr] 379 +     fn shrink(&self) -> Box<dyn Iterator<Item=LinkedList<T>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:392:29
[INFO] [stderr]     |
[INFO] [stderr] 392 |     fn shrink(&self) -> Box<Iterator<Item=VecDeque<T>>> {
[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] 392 -     fn shrink(&self) -> Box<Iterator<Item=VecDeque<T>>> {
[INFO] [stderr] 392 +     fn shrink(&self) -> Box<dyn Iterator<Item=VecDeque<T>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:409:29
[INFO] [stderr]     |
[INFO] [stderr] 409 |     fn shrink(&self) -> Box<Iterator<Item=String>> {
[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] 409 -     fn shrink(&self) -> Box<Iterator<Item=String>> {
[INFO] [stderr] 409 +     fn shrink(&self) -> Box<dyn Iterator<Item=String>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:483:29
[INFO] [stderr]     |
[INFO] [stderr] 483 |     fn shrink(&self) -> Box<Iterator<Item=char>> {
[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] 483 -     fn shrink(&self) -> Box<Iterator<Item=char>> {
[INFO] [stderr] 483 +     fn shrink(&self) -> Box<dyn Iterator<Item=char>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:539:41
[INFO] [stderr]     |
[INFO] [stderr] 539 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 548 | / unsigned_arbitrary! {
[INFO] [stderr] 549 | |     usize, u8, u16, u32, u64
[INFO] [stderr] 550 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 539 -                 fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr] 539 +                 fn shrink(&self) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:602:41
[INFO] [stderr]     |
[INFO] [stderr] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 611 | / signed_arbitrary! {
[INFO] [stderr] 612 | |     isize, i8, i16, i32, i64
[INFO] [stderr] 613 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 602 -                 fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr] 602 +                 fn shrink(&self) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:619:29
[INFO] [stderr]     |
[INFO] [stderr] 619 |     fn shrink(&self) -> Box<Iterator<Item=f32>> {
[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] 619 -     fn shrink(&self) -> Box<Iterator<Item=f32>> {
[INFO] [stderr] 619 +     fn shrink(&self) -> Box<dyn Iterator<Item=f32>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:630:29
[INFO] [stderr]     |
[INFO] [stderr] 630 |     fn shrink(&self) -> Box<Iterator<Item=f64>> {
[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] 630 -     fn shrink(&self) -> Box<Iterator<Item=f64>> {
[INFO] [stderr] 630 +     fn shrink(&self) -> Box<dyn Iterator<Item=f64>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:641:29
[INFO] [stderr]     |
[INFO] [stderr] 641 |     fn shrink(&self) -> Box<Iterator<Item=Range<T>>> {
[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] 641 -     fn shrink(&self) -> Box<Iterator<Item=Range<T>>> {
[INFO] [stderr] 641 +     fn shrink(&self) -> Box<dyn Iterator<Item=Range<T>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:652:29
[INFO] [stderr]     |
[INFO] [stderr] 652 |     fn shrink(&self) -> Box<Iterator<Item=RangeFrom<T>>> {
[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] 652 -     fn shrink(&self) -> Box<Iterator<Item=RangeFrom<T>>> {
[INFO] [stderr] 652 +     fn shrink(&self) -> Box<dyn Iterator<Item=RangeFrom<T>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:661:29
[INFO] [stderr]     |
[INFO] [stderr] 661 |     fn shrink(&self) -> Box<Iterator<Item=RangeTo<T>>> {
[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] 661 -     fn shrink(&self) -> Box<Iterator<Item=RangeTo<T>>> {
[INFO] [stderr] 661 +     fn shrink(&self) -> Box<dyn Iterator<Item=RangeTo<T>>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:677:29
[INFO] [stderr]     |
[INFO] [stderr] 677 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[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] 677 -     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stderr] 677 +     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:497:43
[INFO] [stderr]     |
[INFO] [stderr] 497 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 548 | / unsigned_arbitrary! {
[INFO] [stderr] 549 | |     usize, u8, u16, u32, u64
[INFO] [stderr] 550 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `unsigned_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 497 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr] 497 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:561:43
[INFO] [stderr]     |
[INFO] [stderr] 561 |                   pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 611 | / signed_arbitrary! {
[INFO] [stderr] 612 | |     isize, i8, i16, i32, i64
[INFO] [stderr] 613 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:561:43
[INFO] [stderr]     |
[INFO] [stderr] 561 |                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 620 |         signed_shrinker!(i32);
[INFO] [stderr]     |         --------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/arbitrary.rs:561:43
[INFO] [stderr]     |
[INFO] [stderr] 561 |                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 631 |         signed_shrinker!(i64);
[INFO] [stderr]     |         --------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: this warning originates in the macro `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 561 -                 pub fn new(x: $ty) -> Box<Iterator<Item=$ty>> {
[INFO] [stderr] 561 +                 pub fn new(x: $ty) -> Box<dyn Iterator<Item=$ty>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/tester.rs:118:35
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Err(result) => panic!(result.failed_msg()),
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Err(result) => panic!("{}", result.failed_msg()),
[INFO] [stderr]     |                                   +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `quickcheck_seedable` (lib) generated 58 warnings (8 duplicates)
[INFO] [stderr] warning: `quickcheck_seedable` (lib test) generated 58 warnings (58 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/quickcheck-a470968907346528)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test arbitrary::test::bools ... ok
[INFO] [stdout] test arbitrary::test::binaryheaps ... ok
[INFO] [stdout] test arbitrary::test::ints8 ... ok
[INFO] [stdout] test arbitrary::test::quads ... ok
[INFO] [stdout] test arbitrary::test::options ... ok
[INFO] [stdout] test arbitrary::test::ints ... ok
[INFO] [stdout] test arbitrary::test::btreemap ... ok
[INFO] [stdout] test arbitrary::test::arby_uint ... ok
[INFO] [stdout] test arbitrary::test::ints32 ... ok
[INFO] [stdout] test arbitrary::test::chars ... ok
[INFO] [stdout] test arbitrary::test::ints64 ... ok
[INFO] [stdout] test arbitrary::test::hashsets ... ok
[INFO] [stdout] test arbitrary::test::uints32 ... ok
[INFO] [stdout] test arbitrary::test::unit ... ok
[INFO] [stdout] test arbitrary::test::vecdeques ... ok
[INFO] [stdout] test arbitrary::test::vecs ... ok
[INFO] [stdout] test tester::test::shrinking_regression_issue_126 ... ok
[INFO] [stdout] test arbitrary::test::uints64 ... ok
[INFO] [stdout] test arbitrary::test::btreesets ... ok
[INFO] [stdout] test arbitrary::test::uints8 ... ok
[INFO] [stdout] test arbitrary::test::uints ... ok
[INFO] [stdout] test arbitrary::test::triples ... ok
[INFO] [stdout] test arbitrary::test::tuples ... ok
[INFO] [stdout] test arbitrary::test::linkedlists ... ok
[INFO] [stdout] test arbitrary::test::hashmap ... ok
[INFO] [stdout] test arbitrary::test::ranges ... ok
[INFO] [stdout] test arbitrary::test::results ... ok
[INFO] [stdout] test arbitrary::test::ints16 ... ok
[INFO] [stdout] test arbitrary::test::uints16 ... ok
[INFO] [stdout] test arbitrary::test::arby_int ... ok
[INFO] [stdout] test arbitrary::test::arby_unit ... ok
[INFO] [stdout] test tests::max ... ok
[INFO] [stdout] test tests::testable_result ... ok
[INFO] [stdout] test tests::regression_issue_83_signed ... ok
[INFO] [stdout] test tests::prop_reverse_reverse_macro ... ok
[INFO] [stdout] test tests::regression_issue_83 ... ok
[INFO] [stdout] test tests::testable_unit ... ok
[INFO] [stdout] test tests::sort ... ok
[INFO] [stdout] test tests::prop_reverse_reverse ... ok
[INFO] [stdout] test tests::reverse_app ... ok
[INFO] [stdout] test tests::sieve_not_prime - should panic ... ok
[INFO] [stdout] test tests::testable_result_err - should panic ... ok
[INFO] [stdout] test tests::panic_msg_2 - should panic ... ok
[INFO] [stdout] test tests::sieve_not_all_primes - should panic ... ok
[INFO] [stdout] test tests::prop_oob ... ok
[INFO] [stdout] test tests::regression_issue_107_hang - should panic ... ok
[INFO] [stdout] test tests::testable_unit_panic ... ok
[INFO] [stdout] test tests::panic_msg_3 - should panic ... ok
[INFO] [stdout] test tests::panic_msg_1 - should panic ... ok
[INFO] [stdout] test tests::reverse_single ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 50 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.57s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests quickcheck
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/rustwide/workdir/src/arbitrary.rs:420:14
[INFO] [stderr]     |
[INFO] [stderr] 420 |             0...49 => {
[INFO] [stderr]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/rustwide/workdir/src/arbitrary.rs:424:15
[INFO] [stderr]     |
[INFO] [stderr] 424 |             50...59 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/rustwide/workdir/src/arbitrary.rs:433:15
[INFO] [stderr]     |
[INFO] [stderr] 433 |             60...84 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/rustwide/workdir/src/arbitrary.rs:445:15
[INFO] [stderr]     |
[INFO] [stderr] 445 |             85...89 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/rustwide/workdir/src/arbitrary.rs:471:15
[INFO] [stderr]     |
[INFO] [stderr] 471 |             90...94 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/rustwide/workdir/src/arbitrary.rs:475:15
[INFO] [stderr]     |
[INFO] [stderr] 475 |             95...99 => {
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[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] 
[INFO] [stdout] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stdout] running 2 tests
[INFO] [stderr] 
[INFO] [stdout] test src/lib.rs - quickcheck (line 31) ... ok
[INFO] [stdout] test src/tester.rs - tester::QuickCheck<G>::quickcheck (line 100) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7696175f07f4dfde6291c58582400806bc1949b51260efa1a98580ddd455bd63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7696175f07f4dfde6291c58582400806bc1949b51260efa1a98580ddd455bd63", kill_on_drop: false }`
[INFO] [stdout] 7696175f07f4dfde6291c58582400806bc1949b51260efa1a98580ddd455bd63