[INFO] fetching crate quickcheck_seedable 0.3.1...
[INFO] fixing quickcheck_seedable-0.3.1 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=end=2015,2024 for pr-157817-2
[INFO] extracting crate quickcheck_seedable 0.3.1 into /workspace/builds/worker-0-tc2/source
[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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate quickcheck_seedable 0.3.1 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.3.5 (available: v0.11.10)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.33)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `quickcheck_seedable` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b41cdb29d7e6612c9f3f30451aa82517ce61753c93be589d1243833ad7979396
[INFO] running `Command { std: "docker" "start" "b41cdb29d7e6612c9f3f30451aa82517ce61753c93be589d1243833ad7979396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b41cdb29d7e6612c9f3f30451aa82517ce61753c93be589d1243833ad7979396" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b41cdb29d7e6612c9f3f30451aa82517ce61753c93be589d1243833ad7979396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b41cdb29d7e6612c9f3f30451aa82517ce61753c93be589d1243833ad7979396" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=end=2015,2024", kill_on_drop: false }`
[INFO] [stderr] crater-edition-check: migrating to next edition
[INFO] [stderr]    Migrating Cargo.toml from 2015 edition to 2018
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `quickcheck_seedable` (manifest) generated 1 warning
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking quickcheck_seedable v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Migrating src/lib.rs from 2015 edition to 2018
[INFO] [stderr]        Fixed src/lib.rs (2 fixes)
[INFO] [stderr]        Fixed src/tester.rs (3 fixes)
[INFO] [stderr]        Fixed src/tester.rs (1 fix)
[INFO] [stderr]    Migrating examples/sort.rs from 2015 edition to 2018
[INFO] [stderr]    Migrating examples/sieve.rs from 2015 edition to 2018
[INFO] [stderr]    Migrating examples/reverse.rs from 2015 edition to 2018
[INFO] [stderr]    Migrating examples/reverse_single.rs from 2015 edition to 2018
[INFO] [stderr]    Migrating examples/out_of_bounds.rs from 2015 edition to 2018
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.71s
[INFO] [stderr] crater-edition-check: quickcheck_seedable v0.3.1 (/opt/rustwide/workdir) updating edition from 2015 to 2018
[INFO] [stderr]     Checking 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]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn shrink(&self) -> Box<dyn Iterator<Item=bool>> {
[INFO] [stdout]    |                             +++
[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]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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:224:27
[INFO] [stdout]     |
[INFO] [stdout] 224 |     element_shrinker: Box<Iterator<Item=A>>
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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: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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AShow` is never used
[INFO] [stdout]    --> src/tester.rs:335:7
[INFO] [stdout]     |
[INFO] [stdout] 335 | trait AShow : Arbitrary + Debug {}
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: 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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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: trait `AShow` is never used
[INFO] [stdout]    --> src/tester.rs:335:7
[INFO] [stdout]     |
[INFO] [stdout] 335 | trait AShow : Arbitrary + Debug {}
[INFO] [stdout]     |       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: 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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.72s
[INFO] [stderr] crater-edition-check: migrating to next edition
[INFO] [stderr]    Migrating Cargo.toml from 2015 edition to 2018
[INFO] [stderr]     Checking quickcheck_seedable v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/arbitrary.rs (30 fixes)
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2021-compatibility`
[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] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/tester.rs (1 fix)
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating examples/reverse.rs from 2018 edition to 2021
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2021-compatibility`
[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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: this warning originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[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 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/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] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating examples/out_of_bounds.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/sieve.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/reverse_single.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/sort.rs from 2018 edition to 2021
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.44s
[INFO] [stderr] crater-edition-check: quickcheck_seedable v0.3.1 (/opt/rustwide/workdir) updating edition from 2018 to 2021
[INFO] [stderr]     Checking quickcheck_seedable v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[INFO] [stdout]    --> src/arbitrary.rs:539:41
[INFO] [stdout]     |
[INFO] [stdout] 539 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$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]     = note: this error originates in the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `impl_arb_for_tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[INFO] [stdout]    --> src/arbitrary.rs:539:41
[INFO] [stdout]     |
[INFO] [stdout] 539 |                   fn shrink(&self) -> Box<Iterator<Item=$ty>> {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 548 | / unsigned_arbitrary! {
[INFO] [stdout] 549 | |     usize, u8, u16, u32, u64
[INFO] [stdout] 550 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[INFO] [stdout]    --> src/arbitrary.rs:602:41
[INFO] [stdout]     |
[INFO] [stdout] 602 |                   fn shrink(&self) -> Box<Iterator<Item=$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]     = note: this error originates in the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `unsigned_shrinker` which comes from the expansion of the macro `unsigned_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` which comes from the expansion of the macro `signed_arbitrary` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0782]: expected a type, found a trait
[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]     = note: this error originates in the macro `signed_shrinker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0782`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `quickcheck_seedable` (lib) due to 26 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0782`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `quickcheck_seedable` (lib test) due to 26 previous errors
[INFO] running `Command { std: "docker" "inspect" "b41cdb29d7e6612c9f3f30451aa82517ce61753c93be589d1243833ad7979396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b41cdb29d7e6612c9f3f30451aa82517ce61753c93be589d1243833ad7979396", kill_on_drop: false }`
[INFO] [stdout] b41cdb29d7e6612c9f3f30451aa82517ce61753c93be589d1243833ad7979396
