[INFO] fetching crate mailme 0.1.1... [INFO] checking mailme-0.1.1 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate mailme 0.1.1 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate mailme 0.1.1 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 mailme 0.1.1 [INFO] finished tweaking crates.io crate mailme 0.1.1 [INFO] tweaked toml for crates.io crate mailme 0.1.1 written to /workspace/builds/worker-5-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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 78 packages to latest compatible versions [INFO] [stderr] Adding aho-corasick v0.7.15 (latest: v1.1.3) [INFO] [stderr] Adding arrayvec v0.5.2 (latest: v0.7.6) [INFO] [stderr] Adding base64 v0.12.3 (latest: v0.22.1) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.6.0) [INFO] [stderr] Adding bitvec v0.19.6 (latest: v1.0.1) [INFO] [stderr] Adding bytes v0.6.0 (latest: v1.7.1) [INFO] [stderr] Adding env_logger v0.7.1 (latest: v0.11.5) [INFO] [stderr] Adding funty v1.1.0 (latest: v2.0.0) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.4.0) [INFO] [stderr] Adding hermit-abi v0.3.9 (latest: v0.4.0) [INFO] [stderr] Adding humantime v1.3.0 (latest: v2.1.0) [INFO] [stderr] Adding lexical-core v0.7.6 (latest: v0.8.5) [INFO] [stderr] Adding memchr v2.3.4 (latest: v2.7.4) [INFO] [stderr] Adding mio v0.7.14 (latest: v1.0.2) [INFO] [stderr] Adding miow v0.3.7 (latest: v0.6.0) [INFO] [stderr] Adding nom v6.2.2 (latest: v7.1.3) [INFO] [stderr] Adding ntapi v0.3.7 (latest: v0.4.1) [INFO] [stderr] Adding pretty_env_logger v0.4.0 (latest: v0.5.0) [INFO] [stderr] Adding quick-error v1.2.3 (latest: v2.0.1) [INFO] [stderr] Adding radium v0.5.3 (latest: v1.1.0) [INFO] [stderr] Adding regex v1.4.6 (latest: v1.10.6) [INFO] [stderr] Adding regex-syntax v0.6.29 (latest: v0.8.4) [INFO] [stderr] Adding ring v0.16.20 (latest: v0.17.8) [INFO] [stderr] Adding rustls v0.18.1 (latest: v0.23.12) [INFO] [stderr] Adding sct v0.6.1 (latest: v0.7.1) [INFO] [stderr] Adding spin v0.5.2 (latest: v0.9.8) [INFO] [stderr] Adding tokio v0.3.7 (latest: v1.40.0) [INFO] [stderr] Adding tokio-rustls v0.20.0 (latest: v0.26.0) [INFO] [stderr] Adding untrusted v0.7.1 (latest: v0.9.0) [INFO] [stderr] Adding webpki v0.21.4 (latest: v0.22.4) [INFO] [stderr] Adding webpki-roots v0.20.0 (latest: v0.26.5) [INFO] [stderr] Adding wyz v0.2.0 (latest: v0.6.1) [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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] a29e14588bd8e05e34b5419c743877b61fa0bc84fc2d336965e70dc68cf82de4 [INFO] running `Command { std: "docker" "start" "-a" "a29e14588bd8e05e34b5419c743877b61fa0bc84fc2d336965e70dc68cf82de4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a29e14588bd8e05e34b5419c743877b61fa0bc84fc2d336965e70dc68cf82de4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a29e14588bd8e05e34b5419c743877b61fa0bc84fc2d336965e70dc68cf82de4", kill_on_drop: false }` [INFO] [stdout] a29e14588bd8e05e34b5419c743877b61fa0bc84fc2d336965e70dc68cf82de4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 4225e75b58f1ccfcb50308c9bbf41fd074ff80ad9a62be16428171fabf81d31c [INFO] running `Command { std: "docker" "start" "-a" "4225e75b58f1ccfcb50308c9bbf41fd074ff80ad9a62be16428171fabf81d31c", kill_on_drop: false }` [INFO] [stderr] Checking untrusted v0.7.1 [INFO] [stderr] Checking spin v0.5.2 [INFO] [stderr] Compiling radium v0.5.3 [INFO] [stderr] Compiling lexical-core v0.7.6 [INFO] [stderr] Checking bytes v0.6.0 [INFO] [stderr] Compiling tokio v0.3.7 [INFO] [stderr] Compiling nom v6.2.2 [INFO] [stderr] Compiling ring v0.16.20 [INFO] [stderr] Checking mio v0.7.14 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking wyz v0.2.0 [INFO] [stderr] Checking funty v1.1.0 [INFO] [stderr] Checking tap v1.0.1 [INFO] [stderr] Checking regex v1.4.6 [INFO] [stderr] Compiling thiserror-impl v1.0.63 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking dotenv v0.15.0 [INFO] [stderr] Checking bitvec v0.19.6 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking thiserror v1.0.63 [INFO] [stderr] Checking pretty_env_logger v0.4.0 [INFO] [stderr] Checking webpki v0.21.4 [INFO] [stderr] Checking sct v0.6.1 [INFO] [stderr] Checking rustls v0.18.1 [INFO] [stderr] Checking webpki-roots v0.20.0 [INFO] [stderr] Checking tokio-rustls v0.20.0 [INFO] [stderr] Checking mailme v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `msg_count` and `mailbox_size` are never read [INFO] [stdout] --> src/pop3.rs:346:5 [INFO] [stdout] | [INFO] [stdout] 345 | pub struct POP3Status { [INFO] [stdout] | ---------- fields in this struct [INFO] [stdout] 346 | msg_count: usize, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 347 | mailbox_size: usize, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `POP3Status` 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] 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/pop3.rs:366:21 [INFO] [stdout] | [INFO] [stdout] 365 | let rt = Runtime::new().unwrap(); [INFO] [stdout] | -- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 366 | rt.block_on(async { [INFO] [stdout] | _____________________^ [INFO] [stdout] 367 | | let mut client = POP3Client::new_tls("pop.qq.com", 995).await.unwrap(); [INFO] [stdout] 368 | | // let mut stream = POP3Stream::connect("pop.163.com", 110).await.unwrap(); [INFO] [stdout] 369 | | println!("{:?}", client.read_welcome().await); [INFO] [stdout] ... | [INFO] [stdout] 382 | | // println!("{:?}", client.retr(2).await); [INFO] [stdout] 383 | | }) [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] warning: fields `msg_count` and `mailbox_size` are never read [INFO] [stdout] --> src/pop3.rs:346:5 [INFO] [stdout] | [INFO] [stdout] 345 | pub struct POP3Status { [INFO] [stdout] | ---------- fields in this struct [INFO] [stdout] 346 | msg_count: usize, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 347 | mailbox_size: usize, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `POP3Status` 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] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mailme` (lib test) due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "4225e75b58f1ccfcb50308c9bbf41fd074ff80ad9a62be16428171fabf81d31c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4225e75b58f1ccfcb50308c9bbf41fd074ff80ad9a62be16428171fabf81d31c", kill_on_drop: false }` [INFO] [stdout] 4225e75b58f1ccfcb50308c9bbf41fd074ff80ad9a62be16428171fabf81d31c