Dec 19 11:37:45.304 INFO checking nuclearpesto/rust-binary-tree against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 11:37:45.304 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/nuclearpesto/rust-binary-tree:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:37:45.661 INFO [stdout] 139b4e5a41f8f22ec1e6206c2002fe570639523144d9d8550ee7f8112ec775fe
Dec 19 11:37:45.663 INFO running `"docker" "start" "-a" "139b4e5a41f8f22ec1e6206c2002fe570639523144d9d8550ee7f8112ec775fe"`
Dec 19 11:37:48.055 INFO [stderr]     Checking binarytree v0.1.0 (/opt/crater/workdir)
Dec 19 11:37:48.409 INFO [stderr] warning[E0170]: pattern binding `Less` is named the same as one of the variants of the type `std::cmp::Ordering`
Dec 19 11:37:48.409 INFO [stderr]   --> src/main.rs:55:17
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ^^^^ help: to match on the variant, qualify the path: `std::cmp::Ordering::Less`
Dec 19 11:37:48.409 INFO [stderr] 
Dec 19 11:37:48.409 INFO [stderr] warning[E0170]: pattern binding `Equal` is named the same as one of the variants of the type `std::cmp::Ordering`
Dec 19 11:37:48.409 INFO [stderr]   --> src/main.rs:67:17
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr] 67 |                 Equal => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ^^^^^ help: to match on the variant, qualify the path: `std::cmp::Ordering::Equal`
Dec 19 11:37:48.409 INFO [stderr] 
Dec 19 11:37:48.409 INFO [stderr] warning: unreachable pattern
Dec 19 11:37:48.409 INFO [stderr]   --> src/main.rs:61:17
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ---- matches any value
Dec 19 11:37:48.409 INFO [stderr] ...
Dec 19 11:37:48.409 INFO [stderr] 61 |                 More => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ^^^^ unreachable pattern
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr]    = note: #[warn(unreachable_patterns)] on by default
Dec 19 11:37:48.409 INFO [stderr] 
Dec 19 11:37:48.409 INFO [stderr] warning: unreachable pattern
Dec 19 11:37:48.409 INFO [stderr]   --> src/main.rs:67:17
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ---- matches any value
Dec 19 11:37:48.409 INFO [stderr] ...
Dec 19 11:37:48.409 INFO [stderr] 67 |                 Equal => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ^^^^^ unreachable pattern
Dec 19 11:37:48.409 INFO [stderr] 
Dec 19 11:37:48.409 INFO [stderr] warning: unused variable: `Less`
Dec 19 11:37:48.409 INFO [stderr]   --> src/main.rs:55:17
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ^^^^ help: consider using `_Less` instead
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 11:37:48.409 INFO [stderr] 
Dec 19 11:37:48.409 INFO [stderr] warning: unused variable: `More`
Dec 19 11:37:48.409 INFO [stderr]   --> src/main.rs:61:17
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr] 61 |                 More => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ^^^^ help: consider using `_More` instead
Dec 19 11:37:48.409 INFO [stderr] 
Dec 19 11:37:48.409 INFO [stderr] warning: unused variable: `Equal`
Dec 19 11:37:48.409 INFO [stderr]   --> src/main.rs:67:17
Dec 19 11:37:48.409 INFO [stderr]    |
Dec 19 11:37:48.409 INFO [stderr] 67 |                 Equal => {
Dec 19 11:37:48.409 INFO [stderr]    |                 ^^^^^ help: consider using `_Equal` instead
Dec 19 11:37:48.409 INFO [stderr] 
Dec 19 11:37:48.416 INFO [stderr] warning[E0170]: pattern binding `Less` is named the same as one of the variants of the type `std::cmp::Ordering`
Dec 19 11:37:48.416 INFO [stderr]   --> src/main.rs:55:17
Dec 19 11:37:48.416 INFO [stderr]    |
Dec 19 11:37:48.416 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.416 INFO [stderr]    |                 ^^^^ help: to match on the variant, qualify the path: `std::cmp::Ordering::Less`
Dec 19 11:37:48.416 INFO [stderr] 
Dec 19 11:37:48.420 INFO [stderr] warning[E0170]: pattern binding `Equal` is named the same as one of the variants of the type `std::cmp::Ordering`
Dec 19 11:37:48.420 INFO [stderr]   --> src/main.rs:67:17
Dec 19 11:37:48.422 INFO [stderr]    |
Dec 19 11:37:48.422 INFO [stderr] 67 |                 Equal => {
Dec 19 11:37:48.422 INFO [stderr]    |                 ^^^^^ help: to match on the variant, qualify the path: `std::cmp::Ordering::Equal`
Dec 19 11:37:48.422 INFO [stderr] 
Dec 19 11:37:48.422 INFO [stderr] warning: struct is never constructed: `BTree`
Dec 19 11:37:48.422 INFO [stderr]  --> src/main.rs:4:5
Dec 19 11:37:48.422 INFO [stderr]   |
Dec 19 11:37:48.422 INFO [stderr] 4 |     pub struct BTree {
Dec 19 11:37:48.422 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 19 11:37:48.422 INFO [stderr] warning: unreachable pattern
Dec 19 11:37:48.422 INFO [stderr]   --> src/main.rs:61:17
Dec 19 11:37:48.422 INFO [stderr]    |
Dec 19 11:37:48.422 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.422 INFO [stderr]    |                 ---- matches any value
Dec 19 11:37:48.422 INFO [stderr] ...
Dec 19 11:37:48.423 INFO [stderr] 61 |                 More => {
Dec 19 11:37:48.423 INFO [stderr]    |                 ^^^^ unreachable pattern
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr]    = note: #[warn(unreachable_patterns)] on by default
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr]   |
Dec 19 11:37:48.423 INFO [stderr] warning: unreachable pattern
Dec 19 11:37:48.423 INFO [stderr]   --> src/main.rs:67:17
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.423 INFO [stderr]    |                 ---- matches any value
Dec 19 11:37:48.423 INFO [stderr] ...
Dec 19 11:37:48.423 INFO [stderr] 67 |                 Equal => {
Dec 19 11:37:48.423 INFO [stderr]    |                 ^^^^^ unreachable pattern
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr] warning: method is never used: `insert`
Dec 19 11:37:48.423 INFO [stderr]  --> src/main.rs:8:9
Dec 19 11:37:48.423 INFO [stderr]   |
Dec 19 11:37:48.423 INFO [stderr] 8 |         pub fn insert(tree: &BTree, key: &str) -> BTree {
Dec 19 11:37:48.423 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr] warning: method is never used: `new`
Dec 19 11:37:48.423 INFO [stderr]   --> src/main.rs:13:9
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr] 13 |         pub fn new(key: &str) -> BTree {
Dec 19 11:37:48.423 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:37:48.423 INFO [stderr] warning: unused variable: `Less`
Dec 19 11:37:48.423 INFO [stderr]   --> src/main.rs:55:17
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.423 INFO [stderr]    |                 ^^^^ help: consider using `_Less` instead
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr] warning: unused variable: `More`
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr]   --> src/main.rs:61:17
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr] 61 |                 More => {
Dec 19 11:37:48.423 INFO [stderr]    |                 ^^^^ help: consider using `_More` instead
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr] warning: unused variable: `Equal`
Dec 19 11:37:48.423 INFO [stderr]   --> src/main.rs:67:17
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr] 67 |                 Equal => {
Dec 19 11:37:48.423 INFO [stderr]    |                 ^^^^^ help: consider using `_Equal` instead
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr] warning: struct is never constructed: `Node`
Dec 19 11:37:48.423 INFO [stderr]   --> src/main.rs:21:5
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr] 21 |     struct Node {
Dec 19 11:37:48.423 INFO [stderr]    |     ^^^^^^^^^^^
Dec 19 11:37:48.423 INFO [stderr] 
Dec 19 11:37:48.423 INFO [stderr] warning: method is never used: `insert`
Dec 19 11:37:48.423 INFO [stderr]   --> src/main.rs:28:9
Dec 19 11:37:48.423 INFO [stderr]    |
Dec 19 11:37:48.423 INFO [stderr] 28 |         pub fn insert(tree: &Option<Rc<Node>>, key: &str) -> (Option<Rc<Node>>) {
Dec 19 11:37:48.423 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:37:48.424 INFO [stderr] 
Dec 19 11:37:48.424 INFO [stderr] warning: method is never used: `clone_node`
Dec 19 11:37:48.424 INFO [stderr]   --> src/main.rs:35:9
Dec 19 11:37:48.424 INFO [stderr]    |
Dec 19 11:37:48.424 INFO [stderr] 35 |         fn clone_node(node: &Option<Rc<Node>>) -> (Option<Rc<Node>>) {
Dec 19 11:37:48.424 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:37:48.424 INFO [stderr] 
Dec 19 11:37:48.424 INFO [stderr] warning: method is never used: `new_leaf`
Dec 19 11:37:48.424 INFO [stderr]   --> src/main.rs:41:9
Dec 19 11:37:48.424 INFO [stderr]    |
Dec 19 11:37:48.424 INFO [stderr] 41 |         fn new_leaf(key: &str) -> (Option<Rc<Node>>) {
Dec 19 11:37:48.424 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:37:48.424 INFO [stderr] 
Dec 19 11:37:48.424 INFO [stderr] warning: method is never used: `tree_by_key`
Dec 19 11:37:48.424 INFO [stderr]   --> src/main.rs:49:9
Dec 19 11:37:48.424 INFO [stderr]    |
Dec 19 11:37:48.424 INFO [stderr] 49 |         fn tree_by_key(tree: &Rc<Node>, key: &str) -> (Option<Rc<Node>>) {
Dec 19 11:37:48.424 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 11:37:48.424 INFO [stderr] 
Dec 19 11:37:48.424 INFO [stderr] warning: variable `Less` should have a snake case name such as `less`
Dec 19 11:37:48.424 INFO [stderr]   --> src/main.rs:55:17
Dec 19 11:37:48.424 INFO [stderr]    |
Dec 19 11:37:48.424 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.424 INFO [stderr]    |                 ^^^^
Dec 19 11:37:48.424 INFO [stderr]    |
Dec 19 11:37:48.424 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 19 11:37:48.424 INFO [stderr] 
Dec 19 11:37:48.424 INFO [stderr] warning: variable `More` should have a snake case name such as `more`
Dec 19 11:37:48.424 INFO [stderr]   --> src/main.rs:61:17
Dec 19 11:37:48.424 INFO [stderr]    |
Dec 19 11:37:48.424 INFO [stderr] 61 |                 More => {
Dec 19 11:37:48.424 INFO [stderr]    |                 ^^^^
Dec 19 11:37:48.424 INFO [stderr] 
Dec 19 11:37:48.424 INFO [stderr] warning: variable `Equal` should have a snake case name such as `equal`
Dec 19 11:37:48.424 INFO [stderr]   --> src/main.rs:67:17
Dec 19 11:37:48.424 INFO [stderr]    |
Dec 19 11:37:48.424 INFO [stderr] 67 |                 Equal => {
Dec 19 11:37:48.424 INFO [stderr]    |                 ^^^^^
Dec 19 11:37:48.424 INFO [stderr] 
Dec 19 11:37:48.472 INFO [stderr] warning: variable `Less` should have a snake case name such as `less`
Dec 19 11:37:48.472 INFO [stderr]   --> src/main.rs:55:17
Dec 19 11:37:48.472 INFO [stderr]    |
Dec 19 11:37:48.472 INFO [stderr] 55 |                 Less => {
Dec 19 11:37:48.472 INFO [stderr]    |                 ^^^^
Dec 19 11:37:48.472 INFO [stderr]    |
Dec 19 11:37:48.472 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 19 11:37:48.472 INFO [stderr] 
Dec 19 11:37:48.472 INFO [stderr] warning: variable `More` should have a snake case name such as `more`
Dec 19 11:37:48.472 INFO [stderr]   --> src/main.rs:61:17
Dec 19 11:37:48.472 INFO [stderr]    |
Dec 19 11:37:48.472 INFO [stderr] 61 |                 More => {
Dec 19 11:37:48.472 INFO [stderr]    |                 ^^^^
Dec 19 11:37:48.472 INFO [stderr] 
Dec 19 11:37:48.472 INFO [stderr] warning: variable `Equal` should have a snake case name such as `equal`
Dec 19 11:37:48.472 INFO [stderr]   --> src/main.rs:67:17
Dec 19 11:37:48.472 INFO [stderr]    |
Dec 19 11:37:48.472 INFO [stderr] 67 |                 Equal => {
Dec 19 11:37:48.472 INFO [stderr]    |                 ^^^^^
Dec 19 11:37:48.472 INFO [stderr] 
Dec 19 11:37:48.504 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Dec 19 11:37:49.502 INFO running `"docker" "inspect" "139b4e5a41f8f22ec1e6206c2002fe570639523144d9d8550ee7f8112ec775fe"`
Dec 19 11:37:49.920 INFO running `"docker" "rm" "-f" "139b4e5a41f8f22ec1e6206c2002fe570639523144d9d8550ee7f8112ec775fe"`
Dec 19 11:37:50.328 INFO [stdout] 139b4e5a41f8f22ec1e6206c2002fe570639523144d9d8550ee7f8112ec775fe