[INFO] fetching crate mkfs-ext2 0.1.0... [INFO] checking mkfs-ext2-0.1.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate mkfs-ext2 0.1.0 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate mkfs-ext2 0.1.0 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 mkfs-ext2 0.1.0 [INFO] finished tweaking crates.io crate mkfs-ext2 0.1.0 [INFO] tweaked toml for crates.io crate mkfs-ext2 0.1.0 written to /workspace/builds/worker-0-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] Updating crates.io index [INFO] [stderr] Locking 3 packages to latest compatible versions [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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3843ec1435a5443fad7d88d6a0f2b217ff6ce10346705a29604fb40de3f213b7 [INFO] running `Command { std: "docker" "start" "-a" "3843ec1435a5443fad7d88d6a0f2b217ff6ce10346705a29604fb40de3f213b7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3843ec1435a5443fad7d88d6a0f2b217ff6ce10346705a29604fb40de3f213b7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3843ec1435a5443fad7d88d6a0f2b217ff6ce10346705a29604fb40de3f213b7", kill_on_drop: false }` [INFO] [stdout] 3843ec1435a5443fad7d88d6a0f2b217ff6ce10346705a29604fb40de3f213b7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1effce058fcc2e406885a198de9f0a63fd2ab4b08ae3eba70bc4391b8376f0c5 [INFO] running `Command { std: "docker" "start" "-a" "1effce058fcc2e406885a198de9f0a63fd2ab4b08ae3eba70bc4391b8376f0c5", kill_on_drop: false }` [INFO] [stderr] Checking mkfs-filesystem v0.1.0 [INFO] [stderr] Checking mkfs-ext2 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `error_in_core` has been stable since 1.81.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(error_in_core)] [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `error_in_core` has been stable since 1.81.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(error_in_core)] [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Ext2InodeAddress` is never constructed [INFO] [stdout] --> src/lib.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | struct Ext2InodeAddress(NonZeroU32); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/lib.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 18 | impl Ext2InodeAddress { [INFO] [stdout] | --------------------- associated function in this implementation [INFO] [stdout] 19 | pub fn new(n: u32) -> Option { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `block_device` and `superblock` are never read [INFO] [stdout] --> src/lib.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 24 | pub struct Ext2Fs { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 25 | block_device: T, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 26 | superblock: Superblock, [INFO] [stdout] | ^^^^^^^^^^ [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/lib.rs:61:12 [INFO] [stdout] | [INFO] [stdout] 53 | pub fn try_new(block_device: T) -> Result { [INFO] [stdout] | --------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 61 | Ok(Self { [INFO] [stdout] | ____________^ [INFO] [stdout] 62 | | block_device, [INFO] [stdout] 63 | | superblock, [INFO] [stdout] 64 | | }) [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; 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mkfs-ext2` (lib) due to 2 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: struct `Ext2InodeAddress` is never constructed [INFO] [stdout] --> src/lib.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | struct Ext2InodeAddress(NonZeroU32); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/lib.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 18 | impl Ext2InodeAddress { [INFO] [stdout] | --------------------- associated function in this implementation [INFO] [stdout] 19 | pub fn new(n: u32) -> Option { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `block_device` and `superblock` are never read [INFO] [stdout] --> src/lib.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 24 | pub struct Ext2Fs { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 25 | block_device: T, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 26 | superblock: Superblock, [INFO] [stdout] | ^^^^^^^^^^ [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/lib.rs:61:12 [INFO] [stdout] | [INFO] [stdout] 53 | pub fn try_new(block_device: T) -> Result { [INFO] [stdout] | --------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 61 | Ok(Self { [INFO] [stdout] | ____________^ [INFO] [stdout] 62 | | block_device, [INFO] [stdout] 63 | | superblock, [INFO] [stdout] 64 | | }) [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; 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mkfs-ext2` (lib test) due to 2 previous errors; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "1effce058fcc2e406885a198de9f0a63fd2ab4b08ae3eba70bc4391b8376f0c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1effce058fcc2e406885a198de9f0a63fd2ab4b08ae3eba70bc4391b8376f0c5", kill_on_drop: false }` [INFO] [stdout] 1effce058fcc2e406885a198de9f0a63fd2ab4b08ae3eba70bc4391b8376f0c5