[INFO] fetching crate kmers-rs 0.2.0...
[INFO] checking kmers-rs-0.2.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate kmers-rs 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate kmers-rs 0.2.0 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 kmers-rs 0.2.0
[INFO] finished tweaking crates.io crate kmers-rs 0.2.0
[INFO] tweaked toml for crates.io crate kmers-rs 0.2.0 written to /workspace/builds/worker-6-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] 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f0714a785d77d617e2b17c8887e5b62152b179633f0669b41647fba1c4db9ed3
[INFO] running `Command { std: "docker" "start" "-a" "f0714a785d77d617e2b17c8887e5b62152b179633f0669b41647fba1c4db9ed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0714a785d77d617e2b17c8887e5b62152b179633f0669b41647fba1c4db9ed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0714a785d77d617e2b17c8887e5b62152b179633f0669b41647fba1c4db9ed3", kill_on_drop: false }`
[INFO] [stdout] f0714a785d77d617e2b17c8887e5b62152b179633f0669b41647fba1c4db9ed3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 45ffdc0cf33c56873413d9cb8f248239a4b0df2320224bb266378be7c27a8ed8
[INFO] running `Command { std: "docker" "start" "-a" "45ffdc0cf33c56873413d9cb8f248239a4b0df2320224bb266378be7c27a8ed8", kill_on_drop: false }`
[INFO] [stderr]     Checking kmers-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Encoder16` is never constructed
[INFO] [stdout]   --> src/vbyte.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct Encoder16 {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `encode` is never used
[INFO] [stdout]   --> src/vbyte.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl Encoder16 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 67 |     pub fn encode(x: u64, sink: &mut Vec<u16>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Decoder16` is never constructed
[INFO] [stdout]   --> src/vbyte.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Decoder16 {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `decode` is never used
[INFO] [stdout]   --> src/vbyte.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl Decoder16 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 93 |     pub fn decode<'a, I>(iter: &mut I) -> Option<u64>
[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/list.rs:75:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn new(bytes: Src) -> CompressedKmerListIterator<'a, Src> {
[INFO] [stdout]    |                ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 74 |         CompressedKmerListIterator {
[INFO] [stdout] 75 |             bytes: IteratorReadAdaptor::new(bytes),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[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/list.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn new(bytes: Src) -> CompressedKmerFrequencyListIterator<'a, Src> {
[INFO] [stdout]     |                ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 165 |         CompressedKmerFrequencyListIterator {
[INFO] [stdout] 166 |             bytes: IteratorReadAdaptor::new(bytes),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kmers-rs` (lib) due to 3 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `Encoder16` is never constructed
[INFO] [stdout]   --> src/vbyte.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct Encoder16 {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `encode` is never used
[INFO] [stdout]   --> src/vbyte.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl Encoder16 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 67 |     pub fn encode(x: u64, sink: &mut Vec<u16>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Decoder16` is never constructed
[INFO] [stdout]   --> src/vbyte.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Decoder16 {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `decode` is never used
[INFO] [stdout]   --> src/vbyte.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl Decoder16 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 93 |     pub fn decode<'a, I>(iter: &mut I) -> Option<u64>
[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/list.rs:75:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn new(bytes: Src) -> CompressedKmerListIterator<'a, Src> {
[INFO] [stdout]    |                ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 74 |         CompressedKmerListIterator {
[INFO] [stdout] 75 |             bytes: IteratorReadAdaptor::new(bytes),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[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/list.rs:166:20
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn new(bytes: Src) -> CompressedKmerFrequencyListIterator<'a, Src> {
[INFO] [stdout]     |                ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 165 |         CompressedKmerFrequencyListIterator {
[INFO] [stdout] 166 |             bytes: IteratorReadAdaptor::new(bytes),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kmers-rs` (lib test) due to 3 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "45ffdc0cf33c56873413d9cb8f248239a4b0df2320224bb266378be7c27a8ed8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45ffdc0cf33c56873413d9cb8f248239a4b0df2320224bb266378be7c27a8ed8", kill_on_drop: false }`
[INFO] [stdout] 45ffdc0cf33c56873413d9cb8f248239a4b0df2320224bb266378be7c27a8ed8