[INFO] fetching crate toad-jni 1.0.0-beta.3... [INFO] checking toad-jni-1.0.0-beta.3 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate toad-jni 1.0.0-beta.3 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate toad-jni 1.0.0-beta.3 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate toad-jni 1.0.0-beta.3 [INFO] finished tweaking crates.io crate toad-jni 1.0.0-beta.3 [INFO] tweaked toml for crates.io crate toad-jni 1.0.0-beta.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 105 packages to latest compatible versions [INFO] [stderr] Adding foreign-types v0.3.2 (available: v0.5.0) [INFO] [stderr] Adding foreign-types-shared v0.1.1 (available: v0.3.1) [INFO] [stderr] Adding generic-array v0.14.7 (available: v1.1.0) [INFO] [stderr] Adding jni-sys v0.3.0 (available: v0.4.0) [INFO] [stderr] Adding libloading v0.7.4 (available: v0.8.5) [INFO] [stderr] Adding num v0.3.1 (available: v0.4.3) [INFO] [stderr] Adding num-complex v0.3.1 (available: v0.4.6) [INFO] [stderr] Adding num-rational v0.3.2 (available: v0.4.2) [INFO] [stderr] Adding syn v1.0.109 (available: v2.0.79) [INFO] [stderr] Adding toad-array v0.2.3 (available: v0.8.0) [INFO] [stderr] Adding toad-array v0.5.0 (available: v0.8.0) [INFO] [stderr] Adding toad-msg v0.18.1 (available: v0.19.0) [INFO] [stderr] Adding windows-sys v0.45.0 (available: v0.59.0) [INFO] [stderr] Adding windows-targets v0.42.2 (available: v0.52.6) [INFO] [stderr] Adding windows_aarch64_gnullvm v0.42.2 (available: v0.52.6) [INFO] [stderr] Adding windows_aarch64_msvc v0.42.2 (available: v0.52.6) [INFO] [stderr] Adding windows_i686_gnu v0.42.2 (available: v0.52.6) [INFO] [stderr] Adding windows_i686_msvc v0.42.2 (available: v0.52.6) [INFO] [stderr] Adding windows_x86_64_gnu v0.42.2 (available: v0.52.6) [INFO] [stderr] Adding windows_x86_64_gnullvm v0.42.2 (available: v0.52.6) [INFO] [stderr] Adding windows_x86_64_msvc v0.42.2 (available: v0.52.6) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `tinyvec` dependency) [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `toad-array` dependency) [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `toad-len` dependency) [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `toad-stem` dependency) [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f2de9990db7bcd176c5cc84bea9e182baeb88e77f05f583f28657a94a13fad94 [INFO] running `Command { std: "docker" "start" "-a" "f2de9990db7bcd176c5cc84bea9e182baeb88e77f05f583f28657a94a13fad94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f2de9990db7bcd176c5cc84bea9e182baeb88e77f05f583f28657a94a13fad94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f2de9990db7bcd176c5cc84bea9e182baeb88e77f05f583f28657a94a13fad94", kill_on_drop: false }` [INFO] [stdout] f2de9990db7bcd176c5cc84bea9e182baeb88e77f05f583f28657a94a13fad94 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bb145de14f5f2c616ed0bf8d6d5a2b4162b5ad0c8400586b04a712379e75a074 [INFO] running `Command { std: "docker" "start" "-a" "bb145de14f5f2c616ed0bf8d6d5a2b4162b5ad0c8400586b04a712379e75a074", kill_on_drop: false }` [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `tinyvec` dependency) [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `toad-array` dependency) [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `toad-len` dependency) [INFO] [stderr] warning: `default_features` is deprecated in favor of `default-features` and will not work in the 2024 edition [INFO] [stderr] (in the `toad-stem` dependency) [INFO] [stderr] Checking tinyvec v1.8.0 [INFO] [stderr] Checking subtle v2.6.1 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling num-rational v0.3.2 [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling serde_json v1.0.128 [INFO] [stderr] Checking crypto-common v0.1.6 [INFO] [stderr] Compiling zerocopy-derive v0.7.35 [INFO] [stderr] Compiling thiserror-impl v1.0.64 [INFO] [stderr] Checking toad-cursor v0.2.0 [INFO] [stderr] Checking combine v4.6.7 [INFO] [stderr] Checking java-locator v0.1.7 [INFO] [stderr] Checking libloading v0.7.4 [INFO] [stderr] Checking toad-stem v0.1.0 [INFO] [stderr] Checking nb v1.1.0 [INFO] [stderr] Checking no-std-net v0.6.0 [INFO] [stderr] Checking cesu8 v1.1.0 [INFO] [stderr] Checking jni-sys v0.3.0 [INFO] [stderr] Checking naan v0.1.32 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking toad-len v0.1.3 [INFO] [stderr] Checking blake2 v0.10.6 [INFO] [stderr] Checking toad-array v0.2.3 [INFO] [stderr] Checking toad-map v0.2.3 [INFO] [stderr] Checking toad-array v0.5.0 [INFO] [stderr] Checking toad-writable v0.1.1 [INFO] [stderr] Checking toad-string v0.2.0 [INFO] [stderr] Checking toad-hash v0.3.0 [INFO] [stderr] Checking zerocopy v0.7.35 [INFO] [stderr] Checking thiserror v1.0.64 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking num-complex v0.3.1 [INFO] [stderr] Checking num-iter v0.1.45 [INFO] [stderr] Checking ppv-lite86 v0.2.20 [INFO] [stderr] Checking num v0.3.1 [INFO] [stderr] Checking embedded-time v0.12.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Compiling toad-macros v0.2.0 [INFO] [stderr] Checking toad-msg v0.18.1 [INFO] [stderr] Checking toad v0.19.1 [INFO] [stderr] Checking jni v0.21.1 [INFO] [stderr] Checking toad-jni v1.0.0-beta.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `java::NoUpcast` [INFO] [stdout] --> src/java/lang/throwable.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use java::NoUpcast; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `java::NoUpcast` [INFO] [stdout] --> src/java/lang/throwable.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use java::NoUpcast; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `toad_array::Array` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use toad_array::Array; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `toad_array::Array` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use toad_array::Array; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Integer` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:8:25 [INFO] [stdout] | [INFO] [stdout] 8 | use crate::java::lang::{Integer, Throwable}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::RangeBounds` [INFO] [stdout] --> src/java/nio/byte_buffer.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::ops::RangeBounds; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::slice::SliceIndex` [INFO] [stdout] --> src/java/nio/byte_buffer.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::slice::SliceIndex; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Integer` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:8:25 [INFO] [stdout] | [INFO] [stdout] 8 | use crate::java::lang::{Integer, Throwable}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `SocketAddr` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:237:18 [INFO] [stdout] | [INFO] [stdout] 237 | use std::net::{SocketAddr, UdpSocket}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::java::lang::Byte` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:242:7 [INFO] [stdout] | [INFO] [stdout] 242 | use crate::java::lang::Byte; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::RangeBounds` [INFO] [stdout] --> src/java/nio/byte_buffer.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::ops::RangeBounds; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::slice::SliceIndex` [INFO] [stdout] --> src/java/nio/byte_buffer.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::slice::SliceIndex; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NoUpcast` [INFO] [stdout] --> src/java/nio/byte_buffer.rs:5:25 [INFO] [stdout] | [INFO] [stdout] 5 | use crate::java::{self, NoUpcast, Object, ResultExt, Signature}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NoUpcast` [INFO] [stdout] --> src/java/ty.rs:5:20 [INFO] [stdout] | [INFO] [stdout] 5 | use super::{Class, NoUpcast}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NoUpcast` [INFO] [stdout] --> src/java/nio/byte_buffer.rs:5:25 [INFO] [stdout] | [INFO] [stdout] 5 | use crate::java::{self, NoUpcast, Object, ResultExt, Signature}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `NoUpcast` [INFO] [stdout] --> src/java/ty.rs:5:20 [INFO] [stdout] | [INFO] [stdout] 5 | use super::{Class, NoUpcast}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `java::Object` [INFO] [stdout] --> src/java/net/inetaddress.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use java::Object; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::Write` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io::Write; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:184:9 [INFO] [stdout] | [INFO] [stdout] 184 | let e = &mut e; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:182:18 [INFO] [stdout] | [INFO] [stdout] 182 | fn recv(&self, mut buf: &mut [u8]) -> nb::Result, Self::Error> { [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `addr` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:230:28 [INFO] [stdout] | [INFO] [stdout] 230 | fn join_multicast(&self, addr: no_std_net::IpAddr) -> Result<(), Self::Error> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_addr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `java::Object` [INFO] [stdout] --> src/java/net/inetaddress.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use java::Object; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::Write` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::io::Write; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `Throwable` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/java/result.rs:49:24 [INFO] [stdout] | [INFO] [stdout] 40 | fn unwrap_java(self, e: &mut java::Env) -> T { [INFO] [stdout] | ---- [INFO] [stdout] | | [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 49 | panic!("{:?}", exo.upcast_to::(e)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `lang::object::Object` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/java/object.rs:133:16 [INFO] [stdout] | [INFO] [stdout] 81 | fn upcast(e: &mut java::Env, jobj: java::lang::Object) -> Self { [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 133 | java::lang::Object::from_local(e, cls).to_string(e)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:184:9 [INFO] [stdout] | [INFO] [stdout] 184 | let e = &mut e; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:182:18 [INFO] [stdout] | [INFO] [stdout] 182 | fn recv(&self, mut buf: &mut [u8]) -> nb::Result, Self::Error> { [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `addr` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:230:28 [INFO] [stdout] | [INFO] [stdout] 230 | fn join_multicast(&self, addr: no_std_net::IpAddr) -> Result<(), Self::Error> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_addr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:252:9 [INFO] [stdout] | [INFO] [stdout] 252 | let e = &mut e; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:280:9 [INFO] [stdout] | [INFO] [stdout] 280 | let e = &mut e; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/java/nio/channels/datagram_channel.rs:323:9 [INFO] [stdout] | [INFO] [stdout] 323 | let e = &mut e; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `Throwable` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/java/result.rs:49:24 [INFO] [stdout] | [INFO] [stdout] 40 | fn unwrap_java(self, e: &mut java::Env) -> T { [INFO] [stdout] | ---- [INFO] [stdout] | | [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 49 | panic!("{:?}", exo.upcast_to::(e)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `lang::object::Object` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/java/object.rs:133:16 [INFO] [stdout] | [INFO] [stdout] 81 | fn upcast(e: &mut java::Env, jobj: java::lang::Object) -> Self { [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 133 | java::lang::Object::from_local(e, cls).to_string(e)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged [INFO] [stdout] --> src/lib.rs:153:14 [INFO] [stdout] | [INFO] [stdout] 153 | unsafe { JVM.as_mut().unwrap() } [INFO] [stdout] | ^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `toad-jni` (lib) due to 3 previous errors; 13 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this value of type `Option` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:244:11 [INFO] [stdout] | [INFO] [stdout] 241 | let args = vec![8329i32, 3281, 8329 + 3281].into_iter() [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 244 | match System::console(e).into_option(e) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged [INFO] [stdout] --> src/lib.rs:153:14 [INFO] [stdout] | [INFO] [stdout] 153 | unsafe { JVM.as_mut().unwrap() } [INFO] [stdout] | ^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors; 18 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `toad-jni` (lib test) due to 4 previous errors; 18 warnings emitted [INFO] running `Command { std: "docker" "inspect" "bb145de14f5f2c616ed0bf8d6d5a2b4162b5ad0c8400586b04a712379e75a074", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bb145de14f5f2c616ed0bf8d6d5a2b4162b5ad0c8400586b04a712379e75a074", kill_on_drop: false }` [INFO] [stdout] bb145de14f5f2c616ed0bf8d6d5a2b4162b5ad0c8400586b04a712379e75a074