[INFO] cloning repository https://github.com/davidmkwon/rust-book [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidmkwon/rust-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidmkwon%2Frust-book", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidmkwon%2Frust-book'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 07d52e9bc69cad782810a31dd743330ae5929f05 [INFO] checking davidmkwon/rust-book/07d52e9bc69cad782810a31dd743330ae5929f05 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidmkwon%2Frust-book" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/davidmkwon/rust-book 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 git repo https://github.com/davidmkwon/rust-book [INFO] finished tweaking git repo https://github.com/davidmkwon/rust-book [INFO] tweaked toml for git repo https://github.com/davidmkwon/rust-book written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/davidmkwon/rust-book 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" "+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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] eb6da64966f282940be5cf117a737fa88f3212a6e7e946644aa6a3333379df06 [INFO] running `Command { std: "docker" "start" "-a" "eb6da64966f282940be5cf117a737fa88f3212a6e7e946644aa6a3333379df06", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "eb6da64966f282940be5cf117a737fa88f3212a6e7e946644aa6a3333379df06", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eb6da64966f282940be5cf117a737fa88f3212a6e7e946644aa6a3333379df06", kill_on_drop: false }` [INFO] [stdout] eb6da64966f282940be5cf117a737fa88f3212a6e7e946644aa6a3333379df06 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ca5a93c7e4eb2e68f5d029ae796d12c5acd2bc0d566d67a973fb02ef9f6d9edb [INFO] running `Command { std: "docker" "start" "-a" "ca5a93c7e4eb2e68f5d029ae796d12c5acd2bc0d566d67a973fb02ef9f6d9edb", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.34 [INFO] [stderr] Compiling syn v1.0.82 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Checking hello_macro v0.1.0 (/opt/rustwide/workdir/hello_macro) [INFO] [stderr] Compiling libc v0.2.111 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.15 [INFO] [stderr] Checking modules v0.1.0 (/opt/rustwide/workdir/modules) [INFO] [stderr] Checking server v0.1.0 (/opt/rustwide/workdir/server) [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> server/src/lib.rs:58:5 [INFO] [stdout] | [INFO] [stdout] 57 | struct Worker { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 58 | id: usize, [INFO] [stdout] | ^^ [INFO] [stdout] | [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] --> server/src/lib.rs:80:21 [INFO] [stdout] | [INFO] [stdout] 63 | fn new(id: usize, receiver: Arc>>) -> Worker { [INFO] [stdout] | --------------------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 64 | let thread = thread::spawn(move || loop { [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 80 | thread: Some(thread), [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] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `server` (lib) due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> server/src/lib.rs:58:5 [INFO] [stdout] | [INFO] [stdout] 57 | struct Worker { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 58 | id: usize, [INFO] [stdout] | ^^ [INFO] [stdout] | [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] --> server/src/lib.rs:80:21 [INFO] [stdout] | [INFO] [stdout] 63 | fn new(id: usize, receiver: Arc>>) -> Worker { [INFO] [stdout] | --------------------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 64 | let thread = thread::spawn(move || loop { [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 80 | thread: Some(thread), [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] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `server` (lib test) due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "ca5a93c7e4eb2e68f5d029ae796d12c5acd2bc0d566d67a973fb02ef9f6d9edb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca5a93c7e4eb2e68f5d029ae796d12c5acd2bc0d566d67a973fb02ef9f6d9edb", kill_on_drop: false }` [INFO] [stdout] ca5a93c7e4eb2e68f5d029ae796d12c5acd2bc0d566d67a973fb02ef9f6d9edb