[INFO] fetching crate cpp_map 0.1.1...
[INFO] checking cpp_map-0.1.1 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate cpp_map 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate cpp_map 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 cpp_map 0.1.1
[INFO] finished tweaking crates.io crate cpp_map 0.1.1
[INFO] tweaked toml for crates.io crate cpp_map 0.1.1 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 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-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] 2f184094863ff8448f04b74a122b4ab390ad01c760db2299589e248a5f2671c0
[INFO] running `Command { std: "docker" "start" "-a" "2f184094863ff8448f04b74a122b4ab390ad01c760db2299589e248a5f2671c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f184094863ff8448f04b74a122b4ab390ad01c760db2299589e248a5f2671c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f184094863ff8448f04b74a122b4ab390ad01c760db2299589e248a5f2671c0", kill_on_drop: false }`
[INFO] [stdout] 2f184094863ff8448f04b74a122b4ab390ad01c760db2299589e248a5f2671c0
[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] 84af7aec7429771b3f3316184532cba9b38a386e98095c1b988e0a70937a42bb
[INFO] running `Command { std: "docker" "start" "-a" "84af7aec7429771b3f3316184532cba9b38a386e98095c1b988e0a70937a42bb", kill_on_drop: false }`
[INFO] [stderr]     Checking cpp_map v0.1.1 (/opt/rustwide/workdir)
[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:699:12
[INFO] [stdout]     |
[INFO] [stdout] 698 |         let rv = self.remove__(index)?;
[INFO] [stdout]     |             -- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 699 |         Ok(Some(rv.1))
[INFO] [stdout]     |            ^^^^^^^^^^ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[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/lib.rs:959:12
[INFO] [stdout]     |
[INFO] [stdout] 957 |       pub fn new(list: Rc<RefCell<LinkedList<K, V>>>) -> Result<Self, MapError> {
[INFO] [stdout]     |                  ----------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 958 |           let head = list.try_borrow()?.head_;
[INFO] [stdout] 959 |           Ok(Self {
[INFO] [stdout]     |  ____________^
[INFO] [stdout] 960 | |             current: head,
[INFO] [stdout] 961 | |             list,
[INFO] [stdout] 962 | |         })
[INFO] [stdout]     | |         ^ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     | |_________|
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cpp_map` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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:699:12
[INFO] [stdout]     |
[INFO] [stdout] 698 |         let rv = self.remove__(index)?;
[INFO] [stdout]     |             -- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 699 |         Ok(Some(rv.1))
[INFO] [stdout]     |            ^^^^^^^^^^ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[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/lib.rs:959:12
[INFO] [stdout]     |
[INFO] [stdout] 957 |       pub fn new(list: Rc<RefCell<LinkedList<K, V>>>) -> Result<Self, MapError> {
[INFO] [stdout]     |                  ----------------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 958 |           let head = list.try_borrow()?.head_;
[INFO] [stdout] 959 |           Ok(Self {
[INFO] [stdout]     |  ____________^
[INFO] [stdout] 960 | |             current: head,
[INFO] [stdout] 961 | |             list,
[INFO] [stdout] 962 | |         })
[INFO] [stdout]     | |         ^ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     | |_________|
[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] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:341:33
[INFO] [stdout]     |
[INFO] [stdout] 341 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 341 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 341 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:351:33
[INFO] [stdout]     |
[INFO] [stdout] 351 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 351 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 351 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:361:33
[INFO] [stdout]     |
[INFO] [stdout] 361 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 361 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 361 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:371:33
[INFO] [stdout]     |
[INFO] [stdout] 371 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 371 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 371 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:381:33
[INFO] [stdout]     |
[INFO] [stdout] 381 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 381 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 381 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:400:33
[INFO] [stdout]     |
[INFO] [stdout] 400 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 400 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 400 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:407:33
[INFO] [stdout]     |
[INFO] [stdout] 407 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 407 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 407 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:416:33
[INFO] [stdout]     |
[INFO] [stdout] 416 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 416 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 416 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:424:33
[INFO] [stdout]     |
[INFO] [stdout] 424 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 424 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 424 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:433:33
[INFO] [stdout]     |
[INFO] [stdout] 433 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 433 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 433 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:448:33
[INFO] [stdout]     |
[INFO] [stdout] 448 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 448 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 448 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:453:33
[INFO] [stdout]     |
[INFO] [stdout] 453 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 453 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 453 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:468:33
[INFO] [stdout]     |
[INFO] [stdout] 468 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 468 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 468 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:473:33
[INFO] [stdout]     |
[INFO] [stdout] 473 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 473 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 473 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/test/mod.rs:489:33
[INFO] [stdout]     |
[INFO] [stdout] 489 |         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `So` does not implement `Clone`, so calling `clone` on `&So` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 489 -         ll.iter().map(|(x, _)| x.clone()).collect::<Vec<_>>(),
[INFO] [stdout] 489 +         ll.iter().map(|(x, _)| x).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `So`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 10  + #[derive(Clone)]
[INFO] [stdout] 11  | pub struct So {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cpp_map` (lib test) due to 3 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "84af7aec7429771b3f3316184532cba9b38a386e98095c1b988e0a70937a42bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84af7aec7429771b3f3316184532cba9b38a386e98095c1b988e0a70937a42bb", kill_on_drop: false }`
[INFO] [stdout] 84af7aec7429771b3f3316184532cba9b38a386e98095c1b988e0a70937a42bb