[INFO] updating cached repository mmmpa/learning_rust_data_structure [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/mmmpa/learning_rust_data_structure [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/mmmpa/learning_rust_data_structure" "work/ex/beta-1.38-1/sources/1.37.0/gh/mmmpa/learning_rust_data_structure"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mmmpa/learning_rust_data_structure'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/mmmpa/learning_rust_data_structure" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmmpa/learning_rust_data_structure"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmmpa/learning_rust_data_structure'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 255d021cb8214c82ca6d6002070da8d59b5c87a3 [INFO] sha for GitHub repo mmmpa/learning_rust_data_structure: 255d021cb8214c82ca6d6002070da8d59b5c87a3 [INFO] validating manifest of mmmpa/learning_rust_data_structure on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of mmmpa/learning_rust_data_structure on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing mmmpa/learning_rust_data_structure [INFO] finished frobbing mmmpa/learning_rust_data_structure [INFO] frobbed toml for mmmpa/learning_rust_data_structure written to work/ex/beta-1.38-1/sources/1.37.0/gh/mmmpa/learning_rust_data_structure/Cargo.toml [INFO] started frobbing mmmpa/learning_rust_data_structure [INFO] finished frobbing mmmpa/learning_rust_data_structure [INFO] frobbed toml for mmmpa/learning_rust_data_structure written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mmmpa/learning_rust_data_structure/Cargo.toml [INFO] crate mmmpa/learning_rust_data_structure already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing mmmpa/learning_rust_data_structure against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mmmpa/learning_rust_data_structure:/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=warn" "-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" "+1.37.0" "build" "--frozen"` [INFO] [stdout] d97e6e8586586d4214318756aebdf6e503d211f68b25463e2987f6a6ebfae0cf [INFO] running `"docker" "start" "-a" "d97e6e8586586d4214318756aebdf6e503d211f68b25463e2987f6a6ebfae0cf"` [INFO] [stderr] Compiling trees v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `core::borrow::BorrowMut` [INFO] [stderr] --> src/main.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use core::borrow::BorrowMut; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `core::borrow::BorrowMut` [INFO] [stderr] --> src/binary_search_tree.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use core::borrow::BorrowMut; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `core::borrow::BorrowMut` [INFO] [stderr] --> src/parental_binary_search_tree.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use core::borrow::BorrowMut; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/binary_search_tree.rs:62:18 [INFO] [stderr] | [INFO] [stderr] 62 | Some(mut node) => { [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] --> src/parental_binary_search_tree.rs:63:18 [INFO] [stderr] | [INFO] [stderr] 63 | Some(mut node) => { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: type alias is never used: `Node` [INFO] [stderr] --> src/binary_search_tree.rs:6:1 [INFO] [stderr] | [INFO] [stderr] 6 | type Node = Option>>>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: type alias is never used: `Traced` [INFO] [stderr] --> src/binary_search_tree.rs:7:1 [INFO] [stderr] | [INFO] [stderr] 7 | type Traced = Rc>>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `BinarySearchTree` [INFO] [stderr] --> src/binary_search_tree.rs:10:1 [INFO] [stderr] | [INFO] [stderr] 10 | struct BinarySearchTree { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `NodeBody` [INFO] [stderr] --> src/binary_search_tree.rs:15:1 [INFO] [stderr] | [INFO] [stderr] 15 | struct NodeBody { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/binary_search_tree.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | fn new(value: T) -> Node { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/binary_search_tree.rs:46:5 [INFO] [stderr] | [INFO] [stderr] 46 | pub fn new() -> Self { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `insert` [INFO] [stderr] --> src/binary_search_tree.rs:53:5 [INFO] [stderr] | [INFO] [stderr] 53 | pub fn insert(&mut self, v: T) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `insert_support` [INFO] [stderr] --> src/binary_search_tree.rs:59:5 [INFO] [stderr] | [INFO] [stderr] 59 | fn insert_support(&mut self, root: Node, v: T) -> Node { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `trace` [INFO] [stderr] --> src/binary_search_tree.rs:76:5 [INFO] [stderr] | [INFO] [stderr] 76 | fn trace(&self) -> Vec> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `trace_support` [INFO] [stderr] --> src/binary_search_tree.rs:82:5 [INFO] [stderr] | [INFO] [stderr] 82 | fn trace_support(&self, root: &Node, result: &mut Vec>) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: type alias is never used: `Node` [INFO] [stderr] --> src/parental_binary_search_tree.rs:6:1 [INFO] [stderr] | [INFO] [stderr] 6 | type Node = Option>>>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: type alias is never used: `Traced` [INFO] [stderr] --> src/parental_binary_search_tree.rs:7:1 [INFO] [stderr] | [INFO] [stderr] 7 | type Traced = Rc>>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `BinarySearchTree` [INFO] [stderr] --> src/parental_binary_search_tree.rs:10:1 [INFO] [stderr] | [INFO] [stderr] 10 | struct BinarySearchTree { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `NodeBody` [INFO] [stderr] --> src/parental_binary_search_tree.rs:15:1 [INFO] [stderr] | [INFO] [stderr] 15 | struct NodeBody { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/parental_binary_search_tree.rs:23:5 [INFO] [stderr] | [INFO] [stderr] 23 | fn new(value: T, parent: Node) -> Node { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/parental_binary_search_tree.rs:47:5 [INFO] [stderr] | [INFO] [stderr] 47 | pub fn new() -> Self { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `insert` [INFO] [stderr] --> src/parental_binary_search_tree.rs:54:5 [INFO] [stderr] | [INFO] [stderr] 54 | pub fn insert(&mut self, v: T) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `insert_support` [INFO] [stderr] --> src/parental_binary_search_tree.rs:60:5 [INFO] [stderr] | [INFO] [stderr] 60 | fn insert_support(&mut self, root: Node, v: T, p: Node) -> Node { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `trace` [INFO] [stderr] --> src/parental_binary_search_tree.rs:78:5 [INFO] [stderr] | [INFO] [stderr] 78 | fn trace(&self) -> Vec> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `trace_support` [INFO] [stderr] --> src/parental_binary_search_tree.rs:84:5 [INFO] [stderr] | [INFO] [stderr] 84 | fn trace_support(&self, root: &Node, result: &mut Vec>) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `TestContainer` [INFO] [stderr] --> src/main.rs:12:1 [INFO] [stderr] | [INFO] [stderr] 12 | struct TestContainer { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `TestRc` [INFO] [stderr] --> src/main.rs:17:1 [INFO] [stderr] | [INFO] [stderr] 17 | struct TestRc { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Test` [INFO] [stderr] --> src/main.rs:22:1 [INFO] [stderr] | [INFO] [stderr] 22 | struct Test { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.93s [INFO] running `"docker" "inspect" "d97e6e8586586d4214318756aebdf6e503d211f68b25463e2987f6a6ebfae0cf"` [INFO] running `"docker" "rm" "-f" "d97e6e8586586d4214318756aebdf6e503d211f68b25463e2987f6a6ebfae0cf"` [INFO] [stdout] d97e6e8586586d4214318756aebdf6e503d211f68b25463e2987f6a6ebfae0cf [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mmmpa/learning_rust_data_structure:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] cf4e5cafaffce9e4ecb4e4423a16386d9f1f842cd58e5acce66ed8628fee0cc9 [INFO] running `"docker" "start" "-a" "cf4e5cafaffce9e4ecb4e4423a16386d9f1f842cd58e5acce66ed8628fee0cc9"` [INFO] [stderr] Compiling trees v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `core::borrow::BorrowMut` [INFO] [stderr] --> src/main.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use core::borrow::BorrowMut; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `core::borrow::BorrowMut` [INFO] [stderr] --> src/binary_search_tree.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use core::borrow::BorrowMut; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `core::borrow::BorrowMut` [INFO] [stderr] --> src/parental_binary_search_tree.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use core::borrow::BorrowMut; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:40:9 [INFO] [stderr] | [INFO] [stderr] 40 | let mut raw_box = Rc::new(Test { value: 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] --> src/binary_search_tree.rs:62:18 [INFO] [stderr] | [INFO] [stderr] 62 | Some(mut node) => { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/parental_binary_search_tree.rs:63:18 [INFO] [stderr] | [INFO] [stderr] 63 | Some(mut node) => { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: field is never used: `parent` [INFO] [stderr] --> src/parental_binary_search_tree.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 17 | parent: Node, [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `TestRc` [INFO] [stderr] --> src/main.rs:17:1 [INFO] [stderr] | [INFO] [stderr] 17 | struct TestRc { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.60s [INFO] running `"docker" "inspect" "cf4e5cafaffce9e4ecb4e4423a16386d9f1f842cd58e5acce66ed8628fee0cc9"` [INFO] running `"docker" "rm" "-f" "cf4e5cafaffce9e4ecb4e4423a16386d9f1f842cd58e5acce66ed8628fee0cc9"` [INFO] [stdout] cf4e5cafaffce9e4ecb4e4423a16386d9f1f842cd58e5acce66ed8628fee0cc9 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mmmpa/learning_rust_data_structure:/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=warn" "-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" "+1.37.0" "test" "--frozen"` [INFO] [stdout] 626d86c38849e5e63cf90af331ba855c6e218288575324c970e9cd144627acea [INFO] running `"docker" "start" "-a" "626d86c38849e5e63cf90af331ba855c6e218288575324c970e9cd144627acea"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/trees-ee4dbbc82d5b8479 [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test test_rc ... ok [INFO] [stdout] test test_box ... ok [INFO] [stdout] test binary_search_tree::test_insert ... ok [INFO] [stdout] test parental_binary_search_tree::test_insert ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "626d86c38849e5e63cf90af331ba855c6e218288575324c970e9cd144627acea"` [INFO] running `"docker" "rm" "-f" "626d86c38849e5e63cf90af331ba855c6e218288575324c970e9cd144627acea"` [INFO] [stdout] 626d86c38849e5e63cf90af331ba855c6e218288575324c970e9cd144627acea