[INFO] updating cached repository https://github.com/Noah-Kennedy/data_structures [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a649cc7d69a397d7ac7bd381f94acfd30cfe198e [INFO] checking Noah-Kennedy/data_structures against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNoah-Kennedy%2Fdata_structures" "/workspace/builds/worker-5/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Noah-Kennedy/data_structures on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/Noah-Kennedy/data_structures [INFO] finished tweaking git repo https://github.com/Noah-Kennedy/data_structures [INFO] tweaked toml for git repo https://github.com/Noah-Kennedy/data_structures written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/Noah-Kennedy/data_structures already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 46156dd66f2caa05c6f1e47cff49b419590181eb3d67af2f7a53c4c813e6bf3b [INFO] running `"docker" "start" "-a" "46156dd66f2caa05c6f1e47cff49b419590181eb3d67af2f7a53c4c813e6bf3b"` [INFO] [stderr] Checking data_structures v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/lists/linked_list.rs:35:9 [INFO] [stderr] | [INFO] [stderr] 19 | / loop { [INFO] [stderr] 20 | | match iterator { [INFO] [stderr] 21 | | None => { [INFO] [stderr] 22 | | let new_node = ListNode { [INFO] [stderr] ... | [INFO] [stderr] 32 | | } [INFO] [stderr] 33 | | } [INFO] [stderr] | |_________- any code following this expression is unreachable [INFO] [stderr] 34 | [INFO] [stderr] 35 | true [INFO] [stderr] | ^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `result` [INFO] [stderr] --> src/lists/linked_list.rs:15:13 [INFO] [stderr] | [INFO] [stderr] 15 | let result = true; [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/lists/linked_list.rs:13:38 [INFO] [stderr] | [INFO] [stderr] 13 | fn insert(&mut self, element: E, index: u64) -> bool { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/lists/linked_list.rs:38:19 [INFO] [stderr] | [INFO] [stderr] 38 | fn get(&self, index: u64) -> Option { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/lists/linked_list.rs:42:23 [INFO] [stderr] | [INFO] [stderr] 42 | fn set(&mut self, index: u64, new_value: E) -> bool { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `new_value` [INFO] [stderr] --> src/lists/linked_list.rs:42:35 [INFO] [stderr] | [INFO] [stderr] 42 | fn set(&mut self, index: u64, new_value: E) -> bool { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/lists/linked_list.rs:46:26 [INFO] [stderr] | [INFO] [stderr] 46 | fn remove(&mut self, index: u64) -> bool { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] error[E0507]: cannot move out of `self.head` which is behind a mutable reference [INFO] [stderr] --> src/lists/linked_list.rs:17:28 [INFO] [stderr] | [INFO] [stderr] 17 | let mut iterator = self.head; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | move occurs because `self.head` has type `&mut std::option::Option>`, which does not implement the `Copy` trait [INFO] [stderr] | help: consider borrowing here: `&self.head` [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/lists/linked_list.rs:35:9 [INFO] [stderr] | [INFO] [stderr] 19 | / loop { [INFO] [stderr] 20 | | match iterator { [INFO] [stderr] 21 | | None => { [INFO] [stderr] 22 | | let new_node = ListNode { [INFO] [stderr] ... | [INFO] [stderr] 32 | | } [INFO] [stderr] 33 | | } [INFO] [stderr] | |_________- any code following this expression is unreachable [INFO] [stderr] 34 | [INFO] [stderr] 35 | true [INFO] [stderr] | ^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `result` [INFO] [stderr] --> src/lists/linked_list.rs:15:13 [INFO] [stderr] | [INFO] [stderr] 15 | let result = true; [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/lists/linked_list.rs:13:38 [INFO] [stderr] | [INFO] [stderr] 13 | fn insert(&mut self, element: E, index: u64) -> bool { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/lists/linked_list.rs:38:19 [INFO] [stderr] | [INFO] [stderr] 38 | fn get(&self, index: u64) -> Option { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/lists/linked_list.rs:42:23 [INFO] [stderr] | [INFO] [stderr] 42 | fn set(&mut self, index: u64, new_value: E) -> bool { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `new_value` [INFO] [stderr] --> src/lists/linked_list.rs:42:35 [INFO] [stderr] | [INFO] [stderr] 42 | fn set(&mut self, index: u64, new_value: E) -> bool { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/lists/linked_list.rs:46:26 [INFO] [stderr] | [INFO] [stderr] 46 | fn remove(&mut self, index: u64) -> bool { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] error[E0716]: temporary value dropped while borrowed [INFO] [stderr] --> src/lists/linked_list.rs:23:37 [INFO] [stderr] | [INFO] [stderr] 11 | impl<'a, E> super::List<'a, E> for LinkedList<'a, E> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] ... [INFO] [stderr] 22 | let new_node = ListNode { [INFO] [stderr] | ____________________________________- [INFO] [stderr] 23 | | next: & mut None, [INFO] [stderr] | | ^^^^ creates a temporary which is freed while still in use [INFO] [stderr] 24 | | value: element [INFO] [stderr] 25 | | }; [INFO] [stderr] | |_____________________- assignment requires that borrow lasts for `'a` [INFO] [stderr] 26 | self.head = &mut Some(new_node); [INFO] [stderr] 27 | }, [INFO] [stderr] | - temporary value is freed at the end of this statement [INFO] [stderr] [INFO] [stderr] error[E0382]: use of moved value: `element` [INFO] [stderr] --> src/lists/linked_list.rs:24:32 [INFO] [stderr] | [INFO] [stderr] 13 | fn insert(&mut self, element: E, index: u64) -> bool { [INFO] [stderr] | ------- move occurs because `element` has type `E`, which does not implement the `Copy` trait [INFO] [stderr] ... [INFO] [stderr] 24 | value: element [INFO] [stderr] | ^^^^^^^ value moved here, in previous iteration of loop [INFO] [stderr] [INFO] [stderr] error[E0716]: temporary value dropped while borrowed [INFO] [stderr] --> src/lists/linked_list.rs:26:38 [INFO] [stderr] | [INFO] [stderr] 11 | impl<'a, E> super::List<'a, E> for LinkedList<'a, E> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] ... [INFO] [stderr] 26 | self.head = &mut Some(new_node); [INFO] [stderr] | -----------------^^^^^^^^^^^^^^- temporary value is freed at the end of this statement [INFO] [stderr] | | | [INFO] [stderr] | | creates a temporary which is freed while still in use [INFO] [stderr] | assignment requires that borrow lasts for `'a` [INFO] [stderr] [INFO] [stderr] error: aborting due to 4 previous errors; 7 warnings emitted [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0382, E0507, E0716. [INFO] [stderr] For more information about an error, try `rustc --explain E0382`. [INFO] [stderr] error[E0507]: cannot move out of `self.head` which is behind a mutable reference [INFO] [stderr] --> src/lists/linked_list.rs:17:28 [INFO] [stderr] | [INFO] [stderr] 17 | let mut iterator = self.head; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | move occurs because `self.head` has type `&mut std::option::Option>`, which does not implement the `Copy` trait [INFO] [stderr] | help: consider borrowing here: `&self.head` [INFO] [stderr] [INFO] [stderr] error[E0716]: temporary value dropped while borrowed [INFO] [stderr] --> src/lists/linked_list.rs:23:37 [INFO] [stderr] | [INFO] [stderr] 11 | impl<'a, E> super::List<'a, E> for LinkedList<'a, E> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] ... [INFO] [stderr] 22 | let new_node = ListNode { [INFO] [stderr] | ____________________________________- [INFO] [stderr] 23 | | next: & mut None, [INFO] [stderr] | | ^^^^ creates a temporary which is freed while still in use [INFO] [stderr] 24 | | value: element [INFO] [stderr] 25 | | }; [INFO] [stderr] | |_____________________- assignment requires that borrow lasts for `'a` [INFO] [stderr] 26 | self.head = &mut Some(new_node); [INFO] [stderr] 27 | }, [INFO] [stderr] | - temporary value is freed at the end of this statement [INFO] [stderr] [INFO] [stderr] error[E0382]: use of moved value: `element` [INFO] [stderr] --> src/lists/linked_list.rs:24:32 [INFO] [stderr] | [INFO] [stderr] 13 | fn insert(&mut self, element: E, index: u64) -> bool { [INFO] [stderr] | ------- move occurs because `element` has type `E`, which does not implement the `Copy` trait [INFO] [stderr] ... [INFO] [stderr] 24 | value: element [INFO] [stderr] | ^^^^^^^ value moved here, in previous iteration of loop [INFO] [stderr] [INFO] [stderr] error[E0716]: temporary value dropped while borrowed [INFO] [stderr] --> src/lists/linked_list.rs:26:38 [INFO] [stderr] | [INFO] [stderr] 11 | impl<'a, E> super::List<'a, E> for LinkedList<'a, E> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] ... [INFO] [stderr] 26 | self.head = &mut Some(new_node); [INFO] [stderr] | -----------------^^^^^^^^^^^^^^- temporary value is freed at the end of this statement [INFO] [stderr] | | | [INFO] [stderr] | | creates a temporary which is freed while still in use [INFO] [stderr] | assignment requires that borrow lasts for `'a` [INFO] [stderr] [INFO] [stderr] error: could not compile `data_structures`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: aborting due to 4 previous errors; 7 warnings emitted [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0382, E0507, E0716. [INFO] [stderr] For more information about an error, try `rustc --explain E0382`. [INFO] [stderr] error: could not compile `data_structures`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "46156dd66f2caa05c6f1e47cff49b419590181eb3d67af2f7a53c4c813e6bf3b"` [INFO] running `"docker" "rm" "-f" "46156dd66f2caa05c6f1e47cff49b419590181eb3d67af2f7a53c4c813e6bf3b"` [INFO] [stdout] 46156dd66f2caa05c6f1e47cff49b419590181eb3d67af2f7a53c4c813e6bf3b