[INFO] fetching crate ron 0.9.0-alpha.0... [INFO] checking ron-0.9.0-alpha.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate ron 0.9.0-alpha.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate ron 0.9.0-alpha.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ron 0.9.0-alpha.0 [INFO] finished tweaking crates.io crate ron 0.9.0-alpha.0 [INFO] tweaked toml for crates.io crate ron 0.9.0-alpha.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate ron 0.9.0-alpha.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a269d28dadd3422749328e0725d598d36878580718c4f3079c1679eb73cfed8c [INFO] running `Command { std: "docker" "start" "-a" "a269d28dadd3422749328e0725d598d36878580718c4f3079c1679eb73cfed8c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a269d28dadd3422749328e0725d598d36878580718c4f3079c1679eb73cfed8c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a269d28dadd3422749328e0725d598d36878580718c4f3079c1679eb73cfed8c", kill_on_drop: false }` [INFO] [stdout] a269d28dadd3422749328e0725d598d36878580718c4f3079c1679eb73cfed8c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2504a2d22511bd20c9d02273330e781c64440173976813dec4412f5343f6e341 [INFO] running `Command { std: "docker" "start" "-a" "2504a2d22511bd20c9d02273330e781c64440173976813dec4412f5343f6e341", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.78 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling serde_json v1.0.114 [INFO] [stderr] Checking once_cell v1.19.0 [INFO] [stderr] Checking heck v0.4.1 [INFO] [stderr] Checking base64 v0.21.7 [INFO] [stderr] Checking ryu v1.0.17 [INFO] [stderr] Checking inventory v0.3.15 [INFO] [stderr] Checking itoa v1.0.10 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling syn v2.0.52 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling typetag-impl v0.2.16 [INFO] [stderr] Checking bitflags v2.4.2 [INFO] [stderr] Checking erased-serde v0.4.3 [INFO] [stderr] Checking serde_bytes v0.11.14 [INFO] [stderr] Checking option_set v0.2.0 [INFO] [stderr] Checking bytes v1.5.0 [INFO] [stderr] Checking ron v0.9.0-alpha.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking typetag v0.2.16 [INFO] [stdout] error: this value of type `std::option::Option<(Value, Value)>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/value/mod.rs:232:15 [INFO] [stdout] | [INFO] [stdout] 227 | fn next_key_seed(&mut self, seed: K) -> Result> [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 232 | match self.items.pop() { [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 `std::option::Option` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/value/mod.rs:246:15 [INFO] [stdout] | [INFO] [stdout] 242 | fn next_value_seed(&mut self, seed: V) -> Result [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 246 | match self.value.take() { [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] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ron` (lib) due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this value of type `std::option::Option<(value::Value, value::Value)>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/value/mod.rs:232:15 [INFO] [stdout] | [INFO] [stdout] 227 | fn next_key_seed(&mut self, seed: K) -> Result> [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 232 | match self.items.pop() { [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 `std::option::Option` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/value/mod.rs:246:15 [INFO] [stdout] | [INFO] [stdout] 242 | fn next_value_seed(&mut self, seed: V) -> Result [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 246 | match self.value.take() { [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] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ron` (lib test) due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "2504a2d22511bd20c9d02273330e781c64440173976813dec4412f5343f6e341", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2504a2d22511bd20c9d02273330e781c64440173976813dec4412f5343f6e341", kill_on_drop: false }` [INFO] [stdout] 2504a2d22511bd20c9d02273330e781c64440173976813dec4412f5343f6e341