[INFO] updating cached repository https://github.com/grdvsng/white_octopus
[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] f7fdd018475a94b1a661aa7c24da7d66efab02a7
[INFO] checking grdvsng/white_octopus against master#be493fe8cc40c3d3f6030a1313c1ff747fce770d for pr-69129
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrdvsng%2Fwhite_octopus" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grdvsng/white_octopus on toolchain be493fe8cc40c3d3f6030a1313c1ff747fce770d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/grdvsng/white_octopus
[INFO] finished tweaking git repo https://github.com/grdvsng/white_octopus
[INFO] tweaked toml for git repo https://github.com/grdvsng/white_octopus written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "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] c08cf0dab4a5ddf4ea9ce4997e449fe6763c245551f48054457662cd83d26c7d
[INFO] running `"docker" "start" "-a" "c08cf0dab4a5ddf4ea9ce4997e449fe6763c245551f48054457662cd83d26c7d"`
[INFO] [stderr]     Checking white_octopus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `list_utils::*`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use list_utils::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/list_utils.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn new(value: T, next: Option<ListNode<T>>, previous: Option<ListNode<T>>) -> ListNode<T>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `update`
[INFO] [stderr]   --> src/list_utils.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn update(&mut self)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_next`
[INFO] [stderr]   --> src/list_utils.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn  set_next(&mut self, next: &mut Self)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_previous`
[INFO] [stderr]   --> src/list_utils.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn set_previous(&mut self, previous: &mut Self)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rc_from_node_or_null`
[INFO] [stderr]   --> src/list_utils.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn rc_from_node_or_null(item: Option<ListNode<T>>) -> Option<Rc<RefCell<ListNode<T>>>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/list_utils.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn set(&mut self, value: T)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `list_utils::*`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use list_utils::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/list_utils.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn new(value: T, next: Option<ListNode<T>>, previous: Option<ListNode<T>>) -> ListNode<T>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `update`
[INFO] [stderr]   --> src/list_utils.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn update(&mut self)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_next`
[INFO] [stderr]   --> src/list_utils.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn  set_next(&mut self, next: &mut Self)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_previous`
[INFO] [stderr]   --> src/list_utils.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn set_previous(&mut self, previous: &mut Self)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rc_from_node_or_null`
[INFO] [stderr]   --> src/list_utils.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn rc_from_node_or_null(item: Option<ListNode<T>>) -> Option<Rc<RefCell<ListNode<T>>>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/list_utils.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub fn set(&mut self, value: T)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> tests/list_utils_test.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut next     = ListNode::new("next",     None, None);
[INFO] [stderr]   |         ----^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> tests/list_utils_test.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut previous = ListNode::new("previous", None, None);
[INFO] [stderr]   |         ----^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/list_utils_test.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut tail     = ListNode::new("tail",     Some(next), Some(previous));
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_ListNode` should have a snake case name
[INFO] [stderr]  --> tests/list_utils_test.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn test_ListNode()
[INFO] [stderr]   |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_list_node`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `"docker" "inspect" "c08cf0dab4a5ddf4ea9ce4997e449fe6763c245551f48054457662cd83d26c7d"`
[INFO] running `"docker" "rm" "-f" "c08cf0dab4a5ddf4ea9ce4997e449fe6763c245551f48054457662cd83d26c7d"`
[INFO] [stdout] c08cf0dab4a5ddf4ea9ce4997e449fe6763c245551f48054457662cd83d26c7d