[INFO] fetching crate atomicbox 0.4.0... [INFO] checking atomicbox-0.4.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate atomicbox 0.4.0 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate atomicbox 0.4.0 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 atomicbox 0.4.0 [INFO] finished tweaking crates.io crate atomicbox 0.4.0 [INFO] tweaked toml for crates.io crate atomicbox 0.4.0 written to /workspace/builds/worker-6-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] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 55 packages to latest compatible versions [INFO] [stderr] Adding compiletest_rs v0.7.1 (latest: v0.11.0) [INFO] [stderr] Adding hermit-abi v0.3.9 (latest: v0.4.0) [INFO] [stderr] Adding miow v0.3.7 (latest: v0.6.0) [INFO] [stderr] Adding rustfix v0.5.1 (latest: v0.8.4) [INFO] [stderr] Adding term v0.7.0 (latest: v1.0.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1) [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] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f5d763184010e88585b68c17192c8450410b3e9cb33283a765d46ca4a0725344 [INFO] running `Command { std: "docker" "start" "-a" "f5d763184010e88585b68c17192c8450410b3e9cb33283a765d46ca4a0725344", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f5d763184010e88585b68c17192c8450410b3e9cb33283a765d46ca4a0725344", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5d763184010e88585b68c17192c8450410b3e9cb33283a765d46ca4a0725344", kill_on_drop: false }` [INFO] [stdout] f5d763184010e88585b68c17192c8450410b3e9cb33283a765d46ca4a0725344 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 896465a77ad20c413c3a00fddd60a4dc7b8ba2ca5ebf751882c5acaa4b83cddd [INFO] running `Command { std: "docker" "start" "-a" "896465a77ad20c413c3a00fddd60a4dc7b8ba2ca5ebf751882c5acaa4b83cddd", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.158 [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Checking memchr v2.7.4 [INFO] [stderr] Compiling serde v1.0.209 [INFO] [stderr] Compiling anyhow v1.0.86 [INFO] [stderr] Compiling serde_json v1.0.127 [INFO] [stderr] Checking unicode-width v0.1.13 [INFO] [stderr] Checking regex-syntax v0.8.4 [INFO] [stderr] Checking ryu v1.0.18 [INFO] [stderr] Compiling compiletest_rs v0.7.1 [INFO] [stderr] Checking log v0.4.22 [INFO] [stderr] Checking diff v0.1.13 [INFO] [stderr] Checking lazy_static v1.5.0 [INFO] [stderr] Checking atomicbox v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `Box::::from_raw` that must be used [INFO] [stdout] --> src/atomic_box.rs:166:13 [INFO] [stdout] | [INFO] [stdout] 166 | Box::from_raw(last_ptr); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 166 | let _ = Box::from_raw(last_ptr); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Checking dirs-sys-next v0.1.2 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking filetime v0.2.25 [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Checking dirs-next v2.0.0 [INFO] [stderr] Checking term v0.7.0 [INFO] [stderr] Checking tester v0.9.1 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Compiling serde_derive v1.0.209 [INFO] [stderr] Checking regex v1.10.6 [INFO] [stderr] Checking rustfix v0.5.1 [INFO] [stdout] warning: unused return value of `std::boxed::Box::::from_raw` that must be used [INFO] [stdout] --> src/atomic_box.rs:166:13 [INFO] [stdout] | [INFO] [stdout] 166 | Box::from_raw(last_ptr); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box` [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 166 | let _ = Box::from_raw(last_ptr); [INFO] [stdout] | +++++++ [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/atomic_box.rs:281:23 [INFO] [stdout] | [INFO] [stdout] 279 | let my_gate = gate.clone(); [INFO] [stdout] | ------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 280 | let my_box = abox.clone(); [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 281 | spawn(move || { [INFO] [stdout] | _______________________^ [INFO] [stdout] 282 | | my_gate.wait(); [INFO] [stdout] 283 | | let mut my_vec = Box::new(vec![]); [INFO] [stdout] 284 | | for _ in 0..100 { [INFO] [stdout] ... | [INFO] [stdout] 288 | | my_vec [INFO] [stdout] 289 | | }) [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: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `atomicbox` (lib test) due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "896465a77ad20c413c3a00fddd60a4dc7b8ba2ca5ebf751882c5acaa4b83cddd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "896465a77ad20c413c3a00fddd60a4dc7b8ba2ca5ebf751882c5acaa4b83cddd", kill_on_drop: false }` [INFO] [stdout] 896465a77ad20c413c3a00fddd60a4dc7b8ba2ca5ebf751882c5acaa4b83cddd