[INFO] fetching crate rust_tcp_ipc 0.3.1... [INFO] building rust_tcp_ipc-0.3.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate rust_tcp_ipc 0.3.1 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate rust_tcp_ipc 0.3.1 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] started tweaking crates.io crate rust_tcp_ipc 0.3.1 [INFO] finished tweaking crates.io crate rust_tcp_ipc 0.3.1 [INFO] tweaked toml for crates.io crate rust_tcp_ipc 0.3.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 53 packages to latest compatible versions [INFO] [stderr] Adding simplelog v0.5.3 (available: v0.12.2) [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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 577a7c3352c3738297809f77207d76e3d68e518f46fe46f9921fa79cfe9e5199 [INFO] running `Command { std: "docker" "start" "-a" "577a7c3352c3738297809f77207d76e3d68e518f46fe46f9921fa79cfe9e5199", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "577a7c3352c3738297809f77207d76e3d68e518f46fe46f9921fa79cfe9e5199", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "577a7c3352c3738297809f77207d76e3d68e518f46fe46f9921fa79cfe9e5199", kill_on_drop: false }` [INFO] [stdout] 577a7c3352c3738297809f77207d76e3d68e518f46fe46f9921fa79cfe9e5199 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a33e6092e153404749968326da9183af02a8326e4fb8f78b223a190dfe5315da [INFO] running `Command { std: "docker" "start" "-a" "a33e6092e153404749968326da9183af02a8326e4fb8f78b223a190dfe5315da", kill_on_drop: false }` [INFO] [stderr] Compiling log v0.4.22 [INFO] [stderr] Compiling rust_tcp_ipc v0.3.1 (/opt/rustwide/workdir) [INFO] [stdout] error: relative drop order changing in Rust 2024 [INFO] [stdout] --> src/tcp_ipc.rs:190:27 [INFO] [stdout] | [INFO] [stdout] 188 | let listener = [INFO] [stdout] | -------- [INFO] [stdout] | | [INFO] [stdout] | `listener` calls a custom destructor [INFO] [stdout] | `listener` will be dropped later as of Edition 2024 [INFO] [stdout] 189 | TcpListener::bind(socket_address).map_err(ConnectErrors::BindError)?; [INFO] [stdout] 190 | match listener.accept() { [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] 200 | } else { [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] --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/std/src/os/fd/owned.rs:172:1 [INFO] [stdout] note: `listener` invokes this custom destructor [INFO] [stdout] --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/std/src/os/fd/owned.rs:172:1 [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] [stdout] warning: variant `Working` is never constructed [INFO] [stdout] --> src/tests/example_protocol.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | pub enum BusyStatesExample { [INFO] [stdout] | ----------------- variant in this enum [INFO] [stdout] 10 | Idle, [INFO] [stdout] 11 | Working, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `BusyStatesExample` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `speed_check_tcp_minimal` is never used [INFO] [stdout] --> src/tests/speed_comparison.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn speed_check_tcp_minimal() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_tcp_ipc` (lib) due to 1 previous error; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "a33e6092e153404749968326da9183af02a8326e4fb8f78b223a190dfe5315da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a33e6092e153404749968326da9183af02a8326e4fb8f78b223a190dfe5315da", kill_on_drop: false }` [INFO] [stdout] a33e6092e153404749968326da9183af02a8326e4fb8f78b223a190dfe5315da