[INFO] fetching crate efficient_enum 0.3.1...
[INFO] checking efficient_enum-0.3.1 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate efficient_enum 0.3.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate efficient_enum 0.3.1 on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate efficient_enum 0.3.1
[INFO] finished tweaking crates.io crate efficient_enum 0.3.1
[INFO] tweaked toml for crates.io crate efficient_enum 0.3.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68c521f5e77e0c1cc70afdf1803ffdf8d1498846027a3e24f331c08b9a521041
[INFO] running `Command { std: "docker" "start" "-a" "68c521f5e77e0c1cc70afdf1803ffdf8d1498846027a3e24f331c08b9a521041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68c521f5e77e0c1cc70afdf1803ffdf8d1498846027a3e24f331c08b9a521041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68c521f5e77e0c1cc70afdf1803ffdf8d1498846027a3e24f331c08b9a521041", kill_on_drop: false }`
[INFO] [stdout] 68c521f5e77e0c1cc70afdf1803ffdf8d1498846027a3e24f331c08b9a521041
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e180c295c1754189c3f2465569c58b0ba5f5664ee03c23dad6a6011386468330
[INFO] running `Command { std: "docker" "start" "-a" "e180c295c1754189c3f2465569c58b0ba5f5664ee03c23dad6a6011386468330", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking efficient_enum v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/tag.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::{size_of, uninitialized};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/option.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem::{replace,uninitialized};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/option.rs:143:26
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let b = unsafe { uninitialized() };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/option.rs:651:46
[INFO] [stdout]     |
[INFO] [stdout] 651 |         let b = self.ref_1().map_or(unsafe { uninitialized() }, Clone::clone);
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/option.rs:743:26
[INFO] [stdout]     |
[INFO] [stdout] 743 |         let b = unsafe { uninitialized() };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/tag.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/tag.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem::{size_of, uninitialized};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]  --> src/option.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem::{replace,uninitialized};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/option.rs:143:26
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let b = unsafe { uninitialized() };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/option.rs:651:46
[INFO] [stdout]     |
[INFO] [stdout] 651 |         let b = self.ref_1().map_or(unsafe { uninitialized() }, Clone::clone);
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/option.rs:743:26
[INFO] [stdout]     |
[INFO] [stdout] 743 |         let b = unsafe { uninitialized() };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u8` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u16` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u32` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u64` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `usize` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:114:34
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn into(self) -> Option<A> { self.destructure().map(|(a, _)| a) }
[INFO] [stdout]     |             ----                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]     = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:158:20
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn some_0(a: A) -> Self
[INFO] [stdout]     |                   ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 157 |     where B: Default {
[INFO] [stdout] 158 |         Self::some((a, Default::default()))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:165:20
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn some_1(b: B) -> Self
[INFO] [stdout]     |                   ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 164 |     where A: Default {
[INFO] [stdout] 165 |         Self::some((Default::default(), b))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:289:10
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub unsafe fn unwrap_destructure(self) -> (A, B) {
[INFO] [stdout]     |                                      ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 288 |         debug_assert!(self.is_some());
[INFO] [stdout] 289 |         (utils::untag(self.0), self.1)
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:360:45
[INFO] [stdout]     |
[INFO] [stdout] 357 |       pub fn map<R, F>(&mut self, f: F) -> R
[INFO] [stdout]     |                                   ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 360 |           utils::borrow_untagged(&mut self.0, |tag, a|
[INFO] [stdout]     |  _____________________________________________^
[INFO] [stdout] 361 | |             match tag {
[INFO] [stdout] 362 | |                 One::Tagged => f(None),
[INFO] [stdout] 363 | |                 One::Untagged => f(Some((a, b))),
[INFO] [stdout] 364 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:466:22
[INFO] [stdout]     |
[INFO] [stdout] 464 |     pub fn replace_0(&mut self, a: A) -> A {
[INFO] [stdout]     |                                 ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 465 |         let a = utils::tag(a, One::Untagged);
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 466 |         utils::untag(replace(&mut (self.0).0, a))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:483:44
[INFO] [stdout]     |
[INFO] [stdout] 477 |         let (a, b) = unsafe {
[INFO] [stdout]     |              -  - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |              |
[INFO] [stdout]     |              these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 478 |            let a = read(&(self.0).0 as *const TagWrapper<A, TM>);
[INFO] [stdout]     |                - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 479 |            utils::change_tag(&mut (self.0).0, One::Tagged);
[INFO] [stdout] 480 |            let b = read(&(self.0).1 as *const B);
[INFO] [stdout]     |                - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 483 |         (EfficientOptionInnerNone(self.0), (utils::untag(a), b))
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:495:44
[INFO] [stdout]     |
[INFO] [stdout] 490 |         let a = unsafe {
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 491 |            let a = read(&(self.0).0 as *const TagWrapper<A, TM>);
[INFO] [stdout]     |                - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 495 |         (EfficientOptionInnerNone(self.0), utils::untag(a))
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:512:49
[INFO] [stdout]     |
[INFO] [stdout] 510 |       pub fn map<R, F: FnOnce(&mut A)-> R>(&mut self, f: F) -> R {
[INFO] [stdout]     |                                                       ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 511 |           debug_assert!(self.0.is_some());
[INFO] [stdout] 512 |           utils::borrow_untagged(&mut (self.0).0, |_, a|
[INFO] [stdout]     |  _________________________________________________^
[INFO] [stdout] 513 | |             f(a)
[INFO] [stdout]     | |________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:616:18
[INFO] [stdout]     |
[INFO] [stdout] 614 |     pub fn map_some_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]     |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 615 |     where F: FnOnce(EfficientOptionInnerSome<'a, A, B, TM>) -> U {
[INFO] [stdout] 616 |         self.map(|_| default, f)
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:623:21
[INFO] [stdout]     |
[INFO] [stdout] 621 |     pub fn map_none_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]     |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 622 |     where F: FnOnce(EfficientOptionInnerNone<'a, A, B, TM>) -> U {
[INFO] [stdout] 623 |         self.map(f, |_| default)
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:652:30
[INFO] [stdout]     |
[INFO] [stdout] 651 |         let b = self.ref_1().map_or(unsafe { uninitialized() }, Clone::clone);
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 652 |         EfficientOptionTuple(self.0.clone(), b)
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:758:10
[INFO] [stdout]     |
[INFO] [stdout] 756 |     pub fn destructure(self) -> (A, Option<B>) {
[INFO] [stdout]     |                        ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 757 |         let b = if self.is_none() { None } else { Some(self.1) };
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 758 |         (utils::untag(self.0), b)
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:777:10
[INFO] [stdout]     |
[INFO] [stdout] 775 |     pub unsafe fn unwrap_destructure(self) -> (A, B) {
[INFO] [stdout]     |                                      ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 776 |         debug_assert!(self.is_some());
[INFO] [stdout] 777 |         (utils::untag(self.0), self.1)
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:871:22
[INFO] [stdout]     |
[INFO] [stdout] 869 |     pub fn replace_0(&mut self, a: A) -> A {
[INFO] [stdout]     |                                 ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 870 |         let a = utils::tag(a, utils::get_tag(&self.0));
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 871 |         utils::untag(replace(&mut self.0, a))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:876:15
[INFO] [stdout]     |
[INFO] [stdout] 875 |     pub fn replace_1(&mut self, b: Option<B>) -> Option<B> {
[INFO] [stdout]     |                                 ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 876 |         match (utils::get_tag(&self.0), b) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:894:45
[INFO] [stdout]     |
[INFO] [stdout] 892 |       pub fn map<R, F: FnOnce(&mut A, Option<&mut B>)-> R>(&mut self, f: F) -> R {
[INFO] [stdout]     |                                                                       ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 893 |           let b = &mut self.1;
[INFO] [stdout] 894 |           utils::borrow_untagged(&mut self.0, |tag, a|
[INFO] [stdout]     |  _____________________________________________^
[INFO] [stdout] 895 | |             match tag {
[INFO] [stdout] 896 | |                 Two::Option0 => f(a, None),
[INFO] [stdout] 897 | |                 Two::Option1 => f(a, Some(b)),
[INFO] [stdout] 898 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:939:49
[INFO] [stdout]     |
[INFO] [stdout] 937 |       pub fn map<R, F: FnOnce(&mut A)-> R>(&mut self, f: F) -> R {
[INFO] [stdout]     |                                                       ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 938 |           debug_assert!(self.0.is_none());
[INFO] [stdout] 939 |           utils::borrow_untagged(&mut (self.0).0, |_, a|
[INFO] [stdout]     |  _________________________________________________^
[INFO] [stdout] 940 | |             f(a)
[INFO] [stdout]     | |________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:996:49
[INFO] [stdout]     |
[INFO] [stdout] 993 |       pub fn map<R, F: FnOnce(&mut A, &mut B)-> R>(&mut self, f: F) -> R {
[INFO] [stdout]     |                                                               ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 996 |           utils::borrow_untagged(&mut (self.0).0, |_, a|
[INFO] [stdout]     |  _________________________________________________^
[INFO] [stdout] 997 | |             f(a, b)
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/option.rs:1100:18
[INFO] [stdout]      |
[INFO] [stdout] 1098 |     pub fn map_some_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]      |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 1099 |     where F: FnOnce(EfficientOptionTupleInnerSome<'a, A, B, TM>) -> U {
[INFO] [stdout] 1100 |         self.map(|_| default, f)
[INFO] [stdout]      |                  ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this changes meaning in Rust 2024
[INFO] [stdout]      = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/option.rs:1107:21
[INFO] [stdout]      |
[INFO] [stdout] 1105 |     pub fn map_none_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]      |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 1106 |     where F: FnOnce(EfficientOptionTupleInnerNone<'a, A, B, TM>) -> U {
[INFO] [stdout] 1107 |         self.map(f, |_| default)
[INFO] [stdout]      |                     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this changes meaning in Rust 2024
[INFO] [stdout]      = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/option.rs:1272:18
[INFO] [stdout]      |
[INFO] [stdout] 1270 |     pub fn map_some_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]      |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 1271 |     where F: FnOnce(OptionSomeMut<'a, A>) -> U {
[INFO] [stdout] 1272 |         self.map(|_| default, f)
[INFO] [stdout]      |                  ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this changes meaning in Rust 2024
[INFO] [stdout]      = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/option.rs:1279:21
[INFO] [stdout]      |
[INFO] [stdout] 1277 |     pub fn map_none_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]      |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 1278 |     where F: FnOnce(OptionNoneMut<'a, A>) -> U {
[INFO] [stdout] 1279 |         self.map(f, |_| default)
[INFO] [stdout]      |                     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this changes meaning in Rust 2024
[INFO] [stdout]      = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 23 previous errors; 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u8` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u16` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u32` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `efficient_enum` (lib test) due to 24 previous errors; 21 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: the type `u64` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `usize` does not permit being left uninitialized
[INFO] [stdout]    --> src/tag.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             Self::tag(uninitialized(), o)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       this code causes undefined behavior when executed
[INFO] [stdout]     |                       help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 222 | tag_msb!{u8 u16 u32 u64 usize}
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this warning originates in the macro `tag_msb` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:114:34
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn into(self) -> Option<A> { self.destructure().map(|(a, _)| a) }
[INFO] [stdout]     |             ----                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]     = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:158:20
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn some_0(a: A) -> Self
[INFO] [stdout]     |                   ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 157 |     where B: Default {
[INFO] [stdout] 158 |         Self::some((a, Default::default()))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:165:20
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn some_1(b: B) -> Self
[INFO] [stdout]     |                   ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 164 |     where A: Default {
[INFO] [stdout] 165 |         Self::some((Default::default(), b))
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:289:10
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub unsafe fn unwrap_destructure(self) -> (A, B) {
[INFO] [stdout]     |                                      ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 288 |         debug_assert!(self.is_some());
[INFO] [stdout] 289 |         (utils::untag(self.0), self.1)
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:360:45
[INFO] [stdout]     |
[INFO] [stdout] 357 |       pub fn map<R, F>(&mut self, f: F) -> R
[INFO] [stdout]     |                                   ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 360 |           utils::borrow_untagged(&mut self.0, |tag, a|
[INFO] [stdout]     |  _____________________________________________^
[INFO] [stdout] 361 | |             match tag {
[INFO] [stdout] 362 | |                 One::Tagged => f(None),
[INFO] [stdout] 363 | |                 One::Untagged => f(Some((a, b))),
[INFO] [stdout] 364 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:466:22
[INFO] [stdout]     |
[INFO] [stdout] 464 |     pub fn replace_0(&mut self, a: A) -> A {
[INFO] [stdout]     |                                 ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 465 |         let a = utils::tag(a, One::Untagged);
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 466 |         utils::untag(replace(&mut (self.0).0, a))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:483:44
[INFO] [stdout]     |
[INFO] [stdout] 477 |         let (a, b) = unsafe {
[INFO] [stdout]     |              -  - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |              |
[INFO] [stdout]     |              these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 478 |            let a = read(&(self.0).0 as *const TagWrapper<A, TM>);
[INFO] [stdout]     |                - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 479 |            utils::change_tag(&mut (self.0).0, One::Tagged);
[INFO] [stdout] 480 |            let b = read(&(self.0).1 as *const B);
[INFO] [stdout]     |                - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 483 |         (EfficientOptionInnerNone(self.0), (utils::untag(a), b))
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:495:44
[INFO] [stdout]     |
[INFO] [stdout] 490 |         let a = unsafe {
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 491 |            let a = read(&(self.0).0 as *const TagWrapper<A, TM>);
[INFO] [stdout]     |                - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 495 |         (EfficientOptionInnerNone(self.0), utils::untag(a))
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:512:49
[INFO] [stdout]     |
[INFO] [stdout] 510 |       pub fn map<R, F: FnOnce(&mut A)-> R>(&mut self, f: F) -> R {
[INFO] [stdout]     |                                                       ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 511 |           debug_assert!(self.0.is_some());
[INFO] [stdout] 512 |           utils::borrow_untagged(&mut (self.0).0, |_, a|
[INFO] [stdout]     |  _________________________________________________^
[INFO] [stdout] 513 | |             f(a)
[INFO] [stdout]     | |________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:616:18
[INFO] [stdout]     |
[INFO] [stdout] 614 |     pub fn map_some_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]     |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 615 |     where F: FnOnce(EfficientOptionInnerSome<'a, A, B, TM>) -> U {
[INFO] [stdout] 616 |         self.map(|_| default, f)
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:623:21
[INFO] [stdout]     |
[INFO] [stdout] 621 |     pub fn map_none_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]     |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 622 |     where F: FnOnce(EfficientOptionInnerNone<'a, A, B, TM>) -> U {
[INFO] [stdout] 623 |         self.map(f, |_| default)
[INFO] [stdout]     |                     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:652:30
[INFO] [stdout]     |
[INFO] [stdout] 651 |         let b = self.ref_1().map_or(unsafe { uninitialized() }, Clone::clone);
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 652 |         EfficientOptionTuple(self.0.clone(), b)
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:758:10
[INFO] [stdout]     |
[INFO] [stdout] 756 |     pub fn destructure(self) -> (A, Option<B>) {
[INFO] [stdout]     |                        ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 757 |         let b = if self.is_none() { None } else { Some(self.1) };
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 758 |         (utils::untag(self.0), b)
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:777:10
[INFO] [stdout]     |
[INFO] [stdout] 775 |     pub unsafe fn unwrap_destructure(self) -> (A, B) {
[INFO] [stdout]     |                                      ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 776 |         debug_assert!(self.is_some());
[INFO] [stdout] 777 |         (utils::untag(self.0), self.1)
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:871:22
[INFO] [stdout]     |
[INFO] [stdout] 869 |     pub fn replace_0(&mut self, a: A) -> A {
[INFO] [stdout]     |                                 ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 870 |         let a = utils::tag(a, utils::get_tag(&self.0));
[INFO] [stdout]     |             - these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 871 |         utils::untag(replace(&mut self.0, a))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:876:15
[INFO] [stdout]     |
[INFO] [stdout] 875 |     pub fn replace_1(&mut self, b: Option<B>) -> Option<B> {
[INFO] [stdout]     |                                 ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 876 |         match (utils::get_tag(&self.0), b) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:894:45
[INFO] [stdout]     |
[INFO] [stdout] 892 |       pub fn map<R, F: FnOnce(&mut A, Option<&mut B>)-> R>(&mut self, f: F) -> R {
[INFO] [stdout]     |                                                                       ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 893 |           let b = &mut self.1;
[INFO] [stdout] 894 |           utils::borrow_untagged(&mut self.0, |tag, a|
[INFO] [stdout]     |  _____________________________________________^
[INFO] [stdout] 895 | |             match tag {
[INFO] [stdout] 896 | |                 Two::Option0 => f(a, None),
[INFO] [stdout] 897 | |                 Two::Option1 => f(a, Some(b)),
[INFO] [stdout] 898 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:939:49
[INFO] [stdout]     |
[INFO] [stdout] 937 |       pub fn map<R, F: FnOnce(&mut A)-> R>(&mut self, f: F) -> R {
[INFO] [stdout]     |                                                       ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 938 |           debug_assert!(self.0.is_none());
[INFO] [stdout] 939 |           utils::borrow_untagged(&mut (self.0).0, |_, a|
[INFO] [stdout]     |  _________________________________________________^
[INFO] [stdout] 940 | |             f(a)
[INFO] [stdout]     | |________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/option.rs:996:49
[INFO] [stdout]     |
[INFO] [stdout] 993 |       pub fn map<R, F: FnOnce(&mut A, &mut B)-> R>(&mut self, f: F) -> R {
[INFO] [stdout]     |                                                               ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 996 |           utils::borrow_untagged(&mut (self.0).0, |_, a|
[INFO] [stdout]     |  _________________________________________________^
[INFO] [stdout] 997 | |             f(a, b)
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/option.rs:1100:18
[INFO] [stdout]      |
[INFO] [stdout] 1098 |     pub fn map_some_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]      |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 1099 |     where F: FnOnce(EfficientOptionTupleInnerSome<'a, A, B, TM>) -> U {
[INFO] [stdout] 1100 |         self.map(|_| default, f)
[INFO] [stdout]      |                  ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this changes meaning in Rust 2024
[INFO] [stdout]      = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/option.rs:1107:21
[INFO] [stdout]      |
[INFO] [stdout] 1105 |     pub fn map_none_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]      |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 1106 |     where F: FnOnce(EfficientOptionTupleInnerNone<'a, A, B, TM>) -> U {
[INFO] [stdout] 1107 |         self.map(f, |_| default)
[INFO] [stdout]      |                     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this changes meaning in Rust 2024
[INFO] [stdout]      = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/option.rs:1272:18
[INFO] [stdout]      |
[INFO] [stdout] 1270 |     pub fn map_some_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]      |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 1271 |     where F: FnOnce(OptionSomeMut<'a, A>) -> U {
[INFO] [stdout] 1272 |         self.map(|_| default, f)
[INFO] [stdout]      |                  ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this changes meaning in Rust 2024
[INFO] [stdout]      = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]     --> src/option.rs:1279:21
[INFO] [stdout]      |
[INFO] [stdout] 1277 |     pub fn map_none_or<U, F>(self, default: U, f: F) -> U
[INFO] [stdout]      |                                    ----------  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]      |                                    |
[INFO] [stdout]      |                                    these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 1278 |     where F: FnOnce(OptionNoneMut<'a, A>) -> U {
[INFO] [stdout] 1279 |         self.map(f, |_| default)
[INFO] [stdout]      |                     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this changes meaning in Rust 2024
[INFO] [stdout]      = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 23 previous errors; 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `efficient_enum` (lib) due to 24 previous errors; 21 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e180c295c1754189c3f2465569c58b0ba5f5664ee03c23dad6a6011386468330", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e180c295c1754189c3f2465569c58b0ba5f5664ee03c23dad6a6011386468330", kill_on_drop: false }`
[INFO] [stdout] e180c295c1754189c3f2465569c58b0ba5f5664ee03c23dad6a6011386468330