[INFO] updating cached repository zxiang77/lc-rs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/zxiang77/lc-rs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/zxiang77/lc-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/zxiang77/lc-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/zxiang77/lc-rs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/zxiang77/lc-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zxiang77/lc-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zxiang77/lc-rs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] f934f613283d466141dbb5bb8f537e7613127271 [INFO] sha for GitHub repo zxiang77/lc-rs: f934f613283d466141dbb5bb8f537e7613127271 [INFO] validating manifest of zxiang77/lc-rs 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 zxiang77/lc-rs 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 zxiang77/lc-rs [INFO] finished frobbing zxiang77/lc-rs [INFO] frobbed toml for zxiang77/lc-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/zxiang77/lc-rs/Cargo.toml [INFO] started frobbing zxiang77/lc-rs [INFO] finished frobbing zxiang77/lc-rs [INFO] frobbed toml for zxiang77/lc-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zxiang77/lc-rs/Cargo.toml [INFO] crate zxiang77/lc-rs 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] [stderr] Blocking waiting for file lock on package cache [INFO] testing zxiang77/lc-rs against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zxiang77/lc-rs:/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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 0de50fdf1cbc236e78f23bef8cde2c53ead62b77ff7e46e14b5db2d8b594842d [INFO] running `"docker" "start" "-a" "0de50fdf1cbc236e78f23bef8cde2c53ead62b77ff7e46e14b5db2d8b594842d"` [INFO] [stderr] Compiling lc-rs v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `Ref` [INFO] [stderr] --> src/utils/node.rs:2:26 [INFO] [stderr] | [INFO] [stderr] 2 | use std::cell::{RefCell, Ref}; [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `core::borrow::Borrow` [INFO] [stderr] --> src/utils/node.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use core::borrow::Borrow; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/sol/q1028.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `core::borrow::Borrow` [INFO] [stderr] --> src/sol/q1028.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use core::borrow::Borrow; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cell::RefCell` [INFO] [stderr] --> src/main.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::cell::RefCell; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `dep` [INFO] [stderr] --> src/sol/q1028.rs:13:20 [INFO] [stderr] | [INFO] [stderr] 13 | let (node, dep, mut remain) = Solution::parse_next(&s); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_dep` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sol/q1028.rs:32:25 [INFO] [stderr] | [INFO] [stderr] 32 | let mut cur = Solution::peek(&stack); [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: method is never used: `new` [INFO] [stderr] --> src/utils/node.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | pub fn new(val: i32) -> Self { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/sol/q1028.rs:7:1 [INFO] [stderr] | [INFO] [stderr] 7 | pub struct Solution { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `recover_from_preorder` [INFO] [stderr] --> src/sol/q1028.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | pub fn recover_from_preorder(s: String) -> Option>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `peek` [INFO] [stderr] --> src/sol/q1028.rs:47:5 [INFO] [stderr] | [INFO] [stderr] 47 | fn peek(v: &Vec>>) -> Rc> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `parse_next` [INFO] [stderr] --> src/sol/q1028.rs:53:5 [INFO] [stderr] | [INFO] [stderr] 53 | fn parse_next(s: &str) -> (Option>>, usize, &str) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `TheDarkKnight` [INFO] [stderr] --> src/main.rs:7:1 [INFO] [stderr] | [INFO] [stderr] 7 | struct TheDarkKnight; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `nothing_is_true` [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | fn nothing_is_true(self) {} [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.49s [INFO] running `"docker" "inspect" "0de50fdf1cbc236e78f23bef8cde2c53ead62b77ff7e46e14b5db2d8b594842d"` [INFO] running `"docker" "rm" "-f" "0de50fdf1cbc236e78f23bef8cde2c53ead62b77ff7e46e14b5db2d8b594842d"` [INFO] [stdout] 0de50fdf1cbc236e78f23bef8cde2c53ead62b77ff7e46e14b5db2d8b594842d [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zxiang77/lc-rs:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] 6b046cb4619fd75cce6ca0b048cad7453823d34aacd134948de23efd6d482a54 [INFO] running `"docker" "start" "-a" "6b046cb4619fd75cce6ca0b048cad7453823d34aacd134948de23efd6d482a54"` [INFO] [stderr] Compiling lc-rs v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `Ref` [INFO] [stderr] --> src/utils/node.rs:2:26 [INFO] [stderr] | [INFO] [stderr] 2 | use std::cell::{RefCell, Ref}; [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `core::borrow::Borrow` [INFO] [stderr] --> src/utils/node.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use core::borrow::Borrow; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `core::borrow::Borrow` [INFO] [stderr] --> src/sol/q1028.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use core::borrow::Borrow; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cell::RefCell` [INFO] [stderr] --> src/main.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::cell::RefCell; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `dep` [INFO] [stderr] --> src/sol/q1028.rs:13:20 [INFO] [stderr] | [INFO] [stderr] 13 | let (node, dep, mut remain) = Solution::parse_next(&s); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_dep` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/utils/node.rs:58:13 [INFO] [stderr] | [INFO] [stderr] 58 | let mut node2 = TreeNode::new(6); [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/utils/node.rs:60:13 [INFO] [stderr] | [INFO] [stderr] 60 | let mut node4 = TreeNode::new(3); [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/utils/node.rs:61:13 [INFO] [stderr] | [INFO] [stderr] 61 | let mut node5 = TreeNode::new(2); [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/utils/node.rs:78:13 [INFO] [stderr] | [INFO] [stderr] 78 | let mut node2 = TreeNode::new(6); [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/utils/node.rs:80:13 [INFO] [stderr] | [INFO] [stderr] 80 | let mut node4 = TreeNode::new(4); [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/utils/node.rs:81:13 [INFO] [stderr] | [INFO] [stderr] 81 | let mut node5 = TreeNode::new(3); [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/sol/q1028.rs:32:25 [INFO] [stderr] | [INFO] [stderr] 32 | let mut cur = Solution::peek(&stack); [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `get_single_node` [INFO] [stderr] --> src/utils/node.rs:90:5 [INFO] [stderr] | [INFO] [stderr] 90 | fn get_single_node() -> TreeNode { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_single_node_tree` [INFO] [stderr] --> src/utils/node.rs:94:5 [INFO] [stderr] | [INFO] [stderr] 94 | fn test_single_node_tree() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `TheDarkKnight` [INFO] [stderr] --> src/main.rs:7:1 [INFO] [stderr] | [INFO] [stderr] 7 | struct TheDarkKnight; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `nothing_is_true` [INFO] [stderr] --> src/main.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | fn nothing_is_true(self) {} [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.33s [INFO] running `"docker" "inspect" "6b046cb4619fd75cce6ca0b048cad7453823d34aacd134948de23efd6d482a54"` [INFO] running `"docker" "rm" "-f" "6b046cb4619fd75cce6ca0b048cad7453823d34aacd134948de23efd6d482a54"` [INFO] [stdout] 6b046cb4619fd75cce6ca0b048cad7453823d34aacd134948de23efd6d482a54 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zxiang77/lc-rs:/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" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] 8f2e042723047b9bf8091a44c3f12b915b3194175d28dc184feed32bc19abbc4 [INFO] running `"docker" "start" "-a" "8f2e042723047b9bf8091a44c3f12b915b3194175d28dc184feed32bc19abbc4"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test utils::node::node_tests::test_tree_equality ... ok [INFO] [stdout] test utils::node::node_tests::test_inequality ... ok [INFO] [stdout] test sol::q1028::q1028_test::test_run ... ok [INFO] [stderr] Running /opt/crater/target/debug/deps/lc_rs-b0608528746bdaa8 [INFO] [stdout] test utils::node::node_tests::test_complex_tree_equality ... 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" "8f2e042723047b9bf8091a44c3f12b915b3194175d28dc184feed32bc19abbc4"` [INFO] running `"docker" "rm" "-f" "8f2e042723047b9bf8091a44c3f12b915b3194175d28dc184feed32bc19abbc4"` [INFO] [stdout] 8f2e042723047b9bf8091a44c3f12b915b3194175d28dc184feed32bc19abbc4