[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/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/wucheng/leetcode-rust"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/wucheng/leetcode-rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/wucheng/leetcode-rust" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/wucheng/leetcode-rust"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/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 master#60960a260f7b5c695fd0717311d72ce62dd4eb43 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of wucheng/leetcode-rust on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "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/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/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/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking wucheng/leetcode-rust against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/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=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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] cf70e085afbae31fde02f9f8cb20c91da6a96c5ddb02ce2840fb6f9bc9c33470 [INFO] running `"docker" "start" "-a" "cf70e085afbae31fde02f9f8cb20c91da6a96c5ddb02ce2840fb6f9bc9c33470"` [INFO] [stderr] Checking 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] 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 0.75s [INFO] running `"docker" "inspect" "cf70e085afbae31fde02f9f8cb20c91da6a96c5ddb02ce2840fb6f9bc9c33470"` [INFO] running `"docker" "rm" "-f" "cf70e085afbae31fde02f9f8cb20c91da6a96c5ddb02ce2840fb6f9bc9c33470"` [INFO] [stdout] cf70e085afbae31fde02f9f8cb20c91da6a96c5ddb02ce2840fb6f9bc9c33470