[INFO] updating cached repository wucheng/leetcode-rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/wucheng/leetcode-rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/wucheng/leetcode-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/wucheng/leetcode-rust"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wucheng/leetcode-rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/wucheng/leetcode-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wucheng/leetcode-rust"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wucheng/leetcode-rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 31af7426ee4af600f3c11e98886b3cc44e46af88 [INFO] sha for GitHub repo wucheng/leetcode-rust: 31af7426ee4af600f3c11e98886b3cc44e46af88 [INFO] validating manifest of wucheng/leetcode-rust 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 wucheng/leetcode-rust 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 wucheng/leetcode-rust [INFO] finished frobbing wucheng/leetcode-rust [INFO] frobbed toml for wucheng/leetcode-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/wucheng/leetcode-rust/Cargo.toml [INFO] started frobbing wucheng/leetcode-rust [INFO] finished frobbing wucheng/leetcode-rust [INFO] frobbed toml for wucheng/leetcode-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wucheng/leetcode-rust/Cargo.toml [INFO] crate wucheng/leetcode-rust 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 wucheng/leetcode-rust 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-2/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/wucheng/leetcode-rust:/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] 1d0f2f1dc0940bd55126cbb345e28dc9a8887bc930c7dcd4088217a59a8ddade [INFO] running `"docker" "start" "-a" "1d0f2f1dc0940bd55126cbb345e28dc9a8887bc930c7dcd4088217a59a8ddade"` [INFO] [stderr] Compiling libc v0.2.47 [INFO] [stderr] Compiling rand v0.6.4 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_os v0.1.1 [INFO] [stderr] Compiling leetcode_rust v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/s0617_merge_two_binary_trees/merge_two_binary_trees.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | unreachable!() [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/s0206_reverse_linked_list/reverse_linked_list.rs:3:1 [INFO] [stderr] | [INFO] [stderr] 3 | pub struct Solution; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `reverse_list` [INFO] [stderr] --> src/s0206_reverse_linked_list/reverse_linked_list.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | pub fn reverse_list(head: Option>) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Solution` [INFO] [stderr] --> src/s0617_merge_two_binary_trees/merge_two_binary_trees.rs:6:1 [INFO] [stderr] | [INFO] [stderr] 6 | pub struct Solution; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `merge_trees` [INFO] [stderr] --> src/s0617_merge_two_binary_trees/merge_two_binary_trees.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | pub fn merge_trees(t1: Option>>, t2: Option>>) -> Option>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 8.59s [INFO] running `"docker" "inspect" "1d0f2f1dc0940bd55126cbb345e28dc9a8887bc930c7dcd4088217a59a8ddade"` [INFO] running `"docker" "rm" "-f" "1d0f2f1dc0940bd55126cbb345e28dc9a8887bc930c7dcd4088217a59a8ddade"` [INFO] [stdout] 1d0f2f1dc0940bd55126cbb345e28dc9a8887bc930c7dcd4088217a59a8ddade [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/wucheng/leetcode-rust:/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] f81684cc91e7ca62b12f648e45f69fc265e25f6dce44b29cd997f419b285d099 [INFO] running `"docker" "start" "-a" "f81684cc91e7ca62b12f648e45f69fc265e25f6dce44b29cd997f419b285d099"` [INFO] [stderr] Compiling leetcode_rust v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/s0617_merge_two_binary_trees/merge_two_binary_trees.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | unreachable!() [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/s0206_reverse_linked_list/reverse_linked_list.rs:39:13 [INFO] [stderr] | [INFO] [stderr] 39 | let mut third_node = ListNode::new(3); [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] Finished dev [unoptimized + debuginfo] target(s) in 1.71s [INFO] running `"docker" "inspect" "f81684cc91e7ca62b12f648e45f69fc265e25f6dce44b29cd997f419b285d099"` [INFO] running `"docker" "rm" "-f" "f81684cc91e7ca62b12f648e45f69fc265e25f6dce44b29cd997f419b285d099"` [INFO] [stdout] f81684cc91e7ca62b12f648e45f69fc265e25f6dce44b29cd997f419b285d099 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/wucheng/leetcode-rust:/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] 4eea16a3a225015de8603927a23200efd18a61788af85474f2e1c19f223f9ee2 [INFO] running `"docker" "start" "-a" "4eea16a3a225015de8603927a23200efd18a61788af85474f2e1c19f223f9ee2"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running /opt/crater/target/debug/deps/leetcode_rust-87b3a4d5b60e766f [INFO] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test s0206_reverse_linked_list::reverse_linked_list::test::test_none ... ok [INFO] [stdout] test s0206_reverse_linked_list::reverse_linked_list::test::test_reverse_listnode ... ok [INFO] [stdout] test s0617_merge_two_binary_trees::merge_two_binary_trees::tests::test_none_merge_some ... ok [INFO] [stdout] test s0617_merge_two_binary_trees::merge_two_binary_trees::tests::test_some_merge_none ... ok [INFO] [stdout] test s0617_merge_two_binary_trees::merge_two_binary_trees::tests::test_none_merge_none ... ok [INFO] [stdout] test s0617_merge_two_binary_trees::merge_two_binary_trees::tests::test_some_merge_some ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/main-d64240c5d53012a2 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests leetcode_rust [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "4eea16a3a225015de8603927a23200efd18a61788af85474f2e1c19f223f9ee2"` [INFO] running `"docker" "rm" "-f" "4eea16a3a225015de8603927a23200efd18a61788af85474f2e1c19f223f9ee2"` [INFO] [stdout] 4eea16a3a225015de8603927a23200efd18a61788af85474f2e1c19f223f9ee2