[INFO] fetching crate esp-at-driver 0.1.0... [INFO] building esp-at-driver-0.1.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate esp-at-driver 0.1.0 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate esp-at-driver 0.1.0 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 esp-at-driver 0.1.0 [INFO] finished tweaking crates.io crate esp-at-driver 0.1.0 [INFO] tweaked toml for crates.io crate esp-at-driver 0.1.0 written to /workspace/builds/worker-2-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] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 15 packages to latest compatible versions [INFO] [stderr] Adding embedded-hal v0.2.7 (available: v1.0.0) [INFO] [stderr] Adding embedded-hal-mock v0.7.2 (available: v0.11.1) [INFO] [stderr] Adding heapless v0.6.1 (available: v0.8.0) [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] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded embedded-hal-mock v0.7.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 32ae0f4cb6799bc2666248da2a048802dfdb93a105a600580f6e1b3da2092bf8 [INFO] running `Command { std: "docker" "start" "-a" "32ae0f4cb6799bc2666248da2a048802dfdb93a105a600580f6e1b3da2092bf8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "32ae0f4cb6799bc2666248da2a048802dfdb93a105a600580f6e1b3da2092bf8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "32ae0f4cb6799bc2666248da2a048802dfdb93a105a600580f6e1b3da2092bf8", kill_on_drop: false }` [INFO] [stdout] 32ae0f4cb6799bc2666248da2a048802dfdb93a105a600580f6e1b3da2092bf8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 5d195f7a8f0d95e2b1bdda75a8a92fbf4a368d16990fb0db8d7142a16afbf5c6 [INFO] running `Command { std: "docker" "start" "-a" "5d195f7a8f0d95e2b1bdda75a8a92fbf4a368d16990fb0db8d7142a16afbf5c6", kill_on_drop: false }` [INFO] [stderr] Compiling typenum v1.17.0 [INFO] [stderr] Compiling version_check v0.9.5 [INFO] [stderr] Compiling heapless v0.6.1 [INFO] [stderr] Compiling byteorder v1.5.0 [INFO] [stderr] Compiling stable_deref_trait v1.2.0 [INFO] [stderr] Compiling void v1.0.2 [INFO] [stderr] Compiling nb v0.1.3 [INFO] [stderr] Compiling embedded-hal v0.2.7 [INFO] [stderr] Compiling hash32 v0.1.1 [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Compiling generic-array v0.13.3 [INFO] [stderr] Compiling generic-array v0.12.4 [INFO] [stderr] Compiling as-slice v0.1.5 [INFO] [stderr] Compiling esp-at-driver v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: relative drop order changing in Rust 2024 [INFO] [stdout] --> src/lib.rs:52:38 [INFO] [stdout] | [INFO] [stdout] 52 | let value = match block!(self.rx.read()) { [INFO] [stdout] | -------^^^^^^^^^^^^^^- [INFO] [stdout] | | | [INFO] [stdout] | | this value will be stored in a temporary; let us call it `#2` [INFO] [stdout] | | up until Edition 2021 `#2` is dropped last but will be dropped earlier in Edition 2024 [INFO] [stdout] | this value will be stored in a temporary; let us call it `#1` [INFO] [stdout] | `#1` will be dropped later as of Edition 2024 [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: 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 `esp-at-driver` (lib) due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "5d195f7a8f0d95e2b1bdda75a8a92fbf4a368d16990fb0db8d7142a16afbf5c6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5d195f7a8f0d95e2b1bdda75a8a92fbf4a368d16990fb0db8d7142a16afbf5c6", kill_on_drop: false }` [INFO] [stdout] 5d195f7a8f0d95e2b1bdda75a8a92fbf4a368d16990fb0db8d7142a16afbf5c6