[INFO] updating cached repository HunDunDM/leetcode-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/HunDunDM/leetcode-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/HunDunDM/leetcode-rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/HunDunDM/leetcode-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/HunDunDM/leetcode-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/HunDunDM/leetcode-rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/HunDunDM/leetcode-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/HunDunDM/leetcode-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ba475e58706bac595d4d2ea52d7f567ab0022a84
[INFO] sha for GitHub repo HunDunDM/leetcode-rust: ba475e58706bac595d4d2ea52d7f567ab0022a84
[INFO] validating manifest of HunDunDM/leetcode-rust on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of HunDunDM/leetcode-rust on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing HunDunDM/leetcode-rust
[INFO] finished frobbing HunDunDM/leetcode-rust
[INFO] frobbed toml for HunDunDM/leetcode-rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/HunDunDM/leetcode-rust/Cargo.toml
[INFO] started frobbing HunDunDM/leetcode-rust
[INFO] finished frobbing HunDunDM/leetcode-rust
[INFO] frobbed toml for HunDunDM/leetcode-rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/HunDunDM/leetcode-rust/Cargo.toml
[INFO] crate HunDunDM/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing HunDunDM/leetcode-rust against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/HunDunDM/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 350656e495eaacd81dc8a73115b9f4ef5604498f1eeba53b3d088825ba09ea45
[INFO] running `"docker" "start" "-a" "350656e495eaacd81dc8a73115b9f4ef5604498f1eeba53b3d088825ba09ea45"`
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]   --> src/p0001_two_sum.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | 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: `two_sum`
[INFO] [stderr]   --> src/p0001_two_sum.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "350656e495eaacd81dc8a73115b9f4ef5604498f1eeba53b3d088825ba09ea45"`
[INFO] running `"docker" "rm" "-f" "350656e495eaacd81dc8a73115b9f4ef5604498f1eeba53b3d088825ba09ea45"`
[INFO] [stdout] 350656e495eaacd81dc8a73115b9f4ef5604498f1eeba53b3d088825ba09ea45
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/HunDunDM/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b1b682bc127d02ae229a0308e68f04822ff386c79d714110f7150fce50be79c3
[INFO] running `"docker" "start" "-a" "b1b682bc127d02ae229a0308e68f04822ff386c79d714110f7150fce50be79c3"`
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `"docker" "inspect" "b1b682bc127d02ae229a0308e68f04822ff386c79d714110f7150fce50be79c3"`
[INFO] running `"docker" "rm" "-f" "b1b682bc127d02ae229a0308e68f04822ff386c79d714110f7150fce50be79c3"`
[INFO] [stdout] b1b682bc127d02ae229a0308e68f04822ff386c79d714110f7150fce50be79c3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/HunDunDM/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 44056d834746b5cd68b33bc4f80b064f129c952d54e0f602eb344d9d57ac7b35
[INFO] running `"docker" "start" "-a" "44056d834746b5cd68b33bc4f80b064f129c952d54e0f602eb344d9d57ac7b35"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/leetcode_rust-bde080fd2160d998
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test p0001_two_sum::tests::test_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/leetcode_rust-8e3be82802b8cfd9
[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] [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" "44056d834746b5cd68b33bc4f80b064f129c952d54e0f602eb344d9d57ac7b35"`
[INFO] running `"docker" "rm" "-f" "44056d834746b5cd68b33bc4f80b064f129c952d54e0f602eb344d9d57ac7b35"`
[INFO] [stdout] 44056d834746b5cd68b33bc4f80b064f129c952d54e0f602eb344d9d57ac7b35