[INFO] cloning repository https://github.com/0x501D/rust_examples [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0x501D/rust_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x501D%2Frust_examples", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x501D%2Frust_examples'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 65d962a504c41249b30df62064068908a113c930 [INFO] building 0x501D/rust_examples against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x501D%2Frust_examples" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/0x501D/rust_examples 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 git repo https://github.com/0x501D/rust_examples [INFO] finished tweaking git repo https://github.com/0x501D/rust_examples [INFO] tweaked toml for git repo https://github.com/0x501D/rust_examples written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/0x501D/rust_examples 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] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 2764d7de70d0198e6f7ee3fd4dd9b828874754564df942dcec1927e50dd27a55 [INFO] running `Command { std: "docker" "start" "-a" "2764d7de70d0198e6f7ee3fd4dd9b828874754564df942dcec1927e50dd27a55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2764d7de70d0198e6f7ee3fd4dd9b828874754564df942dcec1927e50dd27a55", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2764d7de70d0198e6f7ee3fd4dd9b828874754564df942dcec1927e50dd27a55", kill_on_drop: false }` [INFO] [stdout] 2764d7de70d0198e6f7ee3fd4dd9b828874754564df942dcec1927e50dd27a55 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] efffe6cf1516025ecdbe9b48b9e1057f43f2ef2d0dfdbfb7fb5f82eff5a91a25 [INFO] running `Command { std: "docker" "start" "-a" "efffe6cf1516025ecdbe9b48b9e1057f43f2ef2d0dfdbfb7fb5f82eff5a91a25", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.144 [INFO] [stderr] Compiling mio v0.8.8 [INFO] [stderr] Compiling rust_examples v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.99s [INFO] running `Command { std: "docker" "inspect" "efffe6cf1516025ecdbe9b48b9e1057f43f2ef2d0dfdbfb7fb5f82eff5a91a25", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "efffe6cf1516025ecdbe9b48b9e1057f43f2ef2d0dfdbfb7fb5f82eff5a91a25", kill_on_drop: false }` [INFO] [stdout] efffe6cf1516025ecdbe9b48b9e1057f43f2ef2d0dfdbfb7fb5f82eff5a91a25 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4e8beb292a03f8e79fca9cf9afee73a0f1c6da28639cb2f1f23e2d5c10f0a996 [INFO] running `Command { std: "docker" "start" "-a" "4e8beb292a03f8e79fca9cf9afee73a0f1c6da28639cb2f1f23e2d5c10f0a996", kill_on_drop: false }` [INFO] [stderr] Compiling rust_examples v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: relative drop order changing in Rust 2024 [INFO] [stdout] --> examples/mio_reverse_echo_server.rs:148:53 [INFO] [stdout] | [INFO] [stdout] 115 | let (mut conn, addr) = match listener.accept() { [INFO] [stdout] | - ----------------- [INFO] [stdout] | | | [INFO] [stdout] | | this value will be stored in a temporary; let us call it `#2` [INFO] [stdout] | ________________________________________________| `#2` will be dropped later as of Edition 2024 [INFO] [stdout] | | [INFO] [stdout] 116 | | Ok((conn, addr)) => (conn, addr), [INFO] [stdout] 117 | | Err(e) if e.kind() == io::ErrorKind::WouldBlock => { [INFO] [stdout] 118 | | break; [INFO] [stdout] ... | [INFO] [stdout] 123 | | }; [INFO] [stdout] | | - [INFO] [stdout] | | | [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] ... [INFO] [stdout] 137 | connections.insert(token, connection); [INFO] [stdout] | ------------------------------------- [INFO] [stdout] | | [INFO] [stdout] | this value will be stored in a temporary; let us call it `#3` [INFO] [stdout] | `#3` will be dropped later as of Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 148 | if let Some(mut conn) = connections.remove(&token) { [INFO] [stdout] | -------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | | [INFO] [stdout] | | this value will be stored in a temporary; let us call it `#4` [INFO] [stdout] | | up until Edition 2021 `#4` is dropped last but will be dropped earlier in Edition 2024 [INFO] [stdout] | `conn` calls a custom destructor [INFO] [stdout] | `conn` will be dropped later as of Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 152 | } [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: `#4` invokes this custom destructor [INFO] [stdout] --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/std/src/os/fd/owned.rs:172:1 [INFO] [stdout] note: `#1` invokes this custom destructor [INFO] [stdout] --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/std/src/os/fd/owned.rs:172:1 [INFO] [stdout] note: `#2` invokes this custom destructor [INFO] [stdout] --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/std/src/os/fd/owned.rs:172:1 [INFO] [stdout] note: `#3` invokes this custom destructor [INFO] [stdout] --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/std/src/os/fd/owned.rs:172:1 [INFO] [stdout] note: `conn` 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] [stderr] error: could not compile `rust_examples` (example "mio_reverse_echo_server") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "4e8beb292a03f8e79fca9cf9afee73a0f1c6da28639cb2f1f23e2d5c10f0a996", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4e8beb292a03f8e79fca9cf9afee73a0f1c6da28639cb2f1f23e2d5c10f0a996", kill_on_drop: false }` [INFO] [stdout] 4e8beb292a03f8e79fca9cf9afee73a0f1c6da28639cb2f1f23e2d5c10f0a996