[INFO] fetching crate cfg-expr 0.17.2... [INFO] building cfg-expr-0.17.2 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate cfg-expr 0.17.2 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate cfg-expr 0.17.2 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml [INFO] started tweaking crates.io crate cfg-expr 0.17.2 [INFO] removed 0 missing examples [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate cfg-expr 0.17.2 [INFO] tweaked toml for crates.io crate cfg-expr 0.17.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate crates.io crate cfg-expr 0.17.2 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 92f849db31dd2150936e036c9df1e8f161c21ead4d3d6641220594a77096cefe [INFO] running `Command { std: "docker" "start" "-a" "92f849db31dd2150936e036c9df1e8f161c21ead4d3d6641220594a77096cefe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "92f849db31dd2150936e036c9df1e8f161c21ead4d3d6641220594a77096cefe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92f849db31dd2150936e036c9df1e8f161c21ead4d3d6641220594a77096cefe", kill_on_drop: false }` [INFO] [stdout] 92f849db31dd2150936e036c9df1e8f161c21ead4d3d6641220594a77096cefe [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a2fd071d494dec009d009f33856bb035d0efe7dea80824ff57f77dc4bac73249 [INFO] running `Command { std: "docker" "start" "-a" "a2fd071d494dec009d009f33856bb035d0efe7dea80824ff57f77dc4bac73249", kill_on_drop: false }` [INFO] [stderr] Compiling cfg-expr v0.17.2 (/opt/rustwide/workdir) [INFO] [stdout] error: relative drop order changing in Rust 2024 [INFO] [stdout] --> src/expr/parser.rs:406:28 [INFO] [stdout] | [INFO] [stdout] 33 | let mut func_stack = SmallVec::<[FuncAndSpan; 5]>::new(); [INFO] [stdout] | -------------- [INFO] [stdout] | | [INFO] [stdout] | `func_stack` calls a custom destructor [INFO] [stdout] | `func_stack` will be dropped later as of Edition 2024 [INFO] [stdout] 34 | let mut expr_queue = SmallVec::<[ExprNode; 5]>::new(); [INFO] [stdout] | -------------- [INFO] [stdout] | | [INFO] [stdout] | `expr_queue` calls a custom destructor [INFO] [stdout] | `expr_queue` will be dropped later as of Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 406 | if let Some(top) = func_stack.pop() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this value will be stored in a temporary; let us call it `#1` [INFO] [stdout] | up until Edition 2021 `#1` is dropped last but will be dropped earlier in Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 448 | } [INFO] [stdout] | - now the temporary value is dropped here, before the local variables in the block or statement [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see [INFO] [stdout] note: `#1` invokes this custom destructor [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smallvec-1.13.2/src/lib.rs:2117:1 [INFO] [stdout] | [INFO] [stdout] 2117 | impl Drop for SmallVec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] note: `func_stack` invokes this custom destructor [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smallvec-1.13.2/src/lib.rs:2117:1 [INFO] [stdout] | [INFO] [stdout] 2117 | impl Drop for SmallVec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] note: `expr_queue` invokes this custom destructor [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smallvec-1.13.2/src/lib.rs:2117:1 [INFO] [stdout] | [INFO] [stdout] 2117 | impl Drop for SmallVec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: most of the time, changing drop order is harmless; inspect the `impl Drop`s for side effects like releasing locks or sending messages [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cfg-expr` (lib) due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "a2fd071d494dec009d009f33856bb035d0efe7dea80824ff57f77dc4bac73249", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a2fd071d494dec009d009f33856bb035d0efe7dea80824ff57f77dc4bac73249", kill_on_drop: false }` [INFO] [stdout] a2fd071d494dec009d009f33856bb035d0efe7dea80824ff57f77dc4bac73249