[INFO] fetching crate spellcast 0.1.2... [INFO] checking spellcast-0.1.2 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate spellcast 0.1.2 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate spellcast 0.1.2 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 spellcast 0.1.2 [INFO] finished tweaking crates.io crate spellcast 0.1.2 [INFO] tweaked toml for crates.io crate spellcast 0.1.2 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 8 packages to latest compatible versions [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] 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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 08dc4e532ea3b2c2125287fbc4be8b3301410434aa6c37de20222915d4f04b7b [INFO] running `Command { std: "docker" "start" "-a" "08dc4e532ea3b2c2125287fbc4be8b3301410434aa6c37de20222915d4f04b7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "08dc4e532ea3b2c2125287fbc4be8b3301410434aa6c37de20222915d4f04b7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "08dc4e532ea3b2c2125287fbc4be8b3301410434aa6c37de20222915d4f04b7b", kill_on_drop: false }` [INFO] [stdout] 08dc4e532ea3b2c2125287fbc4be8b3301410434aa6c37de20222915d4f04b7b [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] abbfdd4e6f38a4e0959d40f8159698bbcb7458a84c158a4a25a6eaa0c2068223 [INFO] running `Command { std: "docker" "start" "-a" "abbfdd4e6f38a4e0959d40f8159698bbcb7458a84c158a4a25a6eaa0c2068223", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Checking static_assertions v1.1.0 [INFO] [stderr] Checking moddef v0.2.2 [INFO] [stderr] Checking spellcast v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/veecast/veecast_ref.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/veecast/mod.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Any` and `self` [INFO] [stdout] --> src/convert/convert_.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{any::{self, Any}, marker::Unsize}; [INFO] [stdout] | ^^^^ ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::upcast::Upcast` [INFO] [stdout] --> src/convert/convert_.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::upcast::Upcast; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `upcast::TryUpcastRef` [INFO] [stdout] --> src/convert/convert_.rs:5:54 [INFO] [stdout] | [INFO] [stdout] 5 | use self::{downcast::{DowncastRef, DowncastFromRef}, upcast::TryUpcastRef}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::any::Any` [INFO] [stdout] --> src/object.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::any::Any; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::marker::Unsize` [INFO] [stdout] --> src/lib.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | use std::marker::Unsize; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `associated_type_bounds` has been stable since 1.79.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(associated_type_bounds)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [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/upcast/try_upcast.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 19 | fn try_upcast(self: Box) -> Result, Box> [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 20 | { [INFO] [stdout] 21 | Ok(self.upcast()) [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: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/veecast/veecast_.rs:45:9 [INFO] [stdout] | [INFO] [stdout] 40 | fn veecast(self: Box) -> Result, Box> [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 45 | self.downcast().map(|vee| vee.upcast()) [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; 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `spellcast` (lib) due to 3 previous errors; 9 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "abbfdd4e6f38a4e0959d40f8159698bbcb7458a84c158a4a25a6eaa0c2068223", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "abbfdd4e6f38a4e0959d40f8159698bbcb7458a84c158a4a25a6eaa0c2068223", kill_on_drop: false }` [INFO] [stdout] abbfdd4e6f38a4e0959d40f8159698bbcb7458a84c158a4a25a6eaa0c2068223