[INFO] updating cached repository fjhg19930505/rust_leetcode
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fjhg19930505/rust_leetcode
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fjhg19930505/rust_leetcode" "work/ex/beta-1.38-1/sources/1.37.0/gh/fjhg19930505/rust_leetcode"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fjhg19930505/rust_leetcode'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fjhg19930505/rust_leetcode" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fjhg19930505/rust_leetcode"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fjhg19930505/rust_leetcode'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f14b48859b3344741819d05b3d8c71e0565f7ba9
[INFO] sha for GitHub repo fjhg19930505/rust_leetcode: f14b48859b3344741819d05b3d8c71e0565f7ba9
[INFO] validating manifest of fjhg19930505/rust_leetcode 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 fjhg19930505/rust_leetcode 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 fjhg19930505/rust_leetcode
[INFO] finished frobbing fjhg19930505/rust_leetcode
[INFO] frobbed toml for fjhg19930505/rust_leetcode written to work/ex/beta-1.38-1/sources/1.37.0/gh/fjhg19930505/rust_leetcode/Cargo.toml
[INFO] started frobbing fjhg19930505/rust_leetcode
[INFO] finished frobbing fjhg19930505/rust_leetcode
[INFO] frobbed toml for fjhg19930505/rust_leetcode written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fjhg19930505/rust_leetcode/Cargo.toml
[INFO] crate fjhg19930505/rust_leetcode 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 fjhg19930505/rust_leetcode 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/fjhg19930505/rust_leetcode:/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] 220f49c14a98153992ca254c3a73577f7c7a103d7f2d3a2067b5343774b3e7a0
[INFO] running `"docker" "start" "-a" "220f49c14a98153992ca254c3a73577f7c7a103d7f2d3a2067b5343774b3e7a0"`
[INFO] [stderr]    Compiling math v0.0.2
[INFO] [stderr]    Compiling Study v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/leetcode/tencent/my_atoi.rs:82:19
[INFO] [stderr]    |
[INFO] [stderr] 82 |         } else if (ch < '0' || ch > '9'){
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/leetcode/tencent/my_atoi.rs:91:21
[INFO] [stderr]    |
[INFO] [stderr] 91 |             else if (!has_op && ch != '0') {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `while` condition
[INFO] [stderr]   --> src/leetcode/tencent/longest_common_prefix.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 |     while(i >= 0) {
[INFO] [stderr]    |          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `max_left` is never read
[INFO] [stderr]   --> src/leetcode/tencent/find_median_sorted_arrays.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |             let mut max_left: f64 = 0.0;
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `min_right` is never read
[INFO] [stderr]   --> src/leetcode/tencent/find_median_sorted_arrays.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             let mut min_right: f64 = 0.0;
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `best_two_sum`
[INFO] [stderr]   --> src/leetcode/tencent/two_sum.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn best_two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest_palindrome`
[INFO] [stderr]   --> src/leetcode/tencent/longest_palindrome.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn longest_palindrome(s: String) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `guess_number`
[INFO] [stderr]  --> src/normal_test/mod.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn guess_number() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Study` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `study`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `"docker" "inspect" "220f49c14a98153992ca254c3a73577f7c7a103d7f2d3a2067b5343774b3e7a0"`
[INFO] running `"docker" "rm" "-f" "220f49c14a98153992ca254c3a73577f7c7a103d7f2d3a2067b5343774b3e7a0"`
[INFO] [stdout] 220f49c14a98153992ca254c3a73577f7c7a103d7f2d3a2067b5343774b3e7a0
[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/fjhg19930505/rust_leetcode:/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] 440af6265b8e7785950e4ef8fa149302d5f1128acdc4013b6a126ffd8786a3a1
[INFO] running `"docker" "start" "-a" "440af6265b8e7785950e4ef8fa149302d5f1128acdc4013b6a126ffd8786a3a1"`
[INFO] [stderr]    Compiling Study v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/leetcode/tencent/my_atoi.rs:82:19
[INFO] [stderr]    |
[INFO] [stderr] 82 |         } else if (ch < '0' || ch > '9'){
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/leetcode/tencent/my_atoi.rs:91:21
[INFO] [stderr]    |
[INFO] [stderr] 91 |             else if (!has_op && ch != '0') {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `while` condition
[INFO] [stderr]   --> src/leetcode/tencent/longest_common_prefix.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 |     while(i >= 0) {
[INFO] [stderr]    |          ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `max_left` is never read
[INFO] [stderr]   --> src/leetcode/tencent/find_median_sorted_arrays.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |             let mut max_left: f64 = 0.0;
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `min_right` is never read
[INFO] [stderr]   --> src/leetcode/tencent/find_median_sorted_arrays.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |             let mut min_right: f64 = 0.0;
[INFO] [stderr]    |                     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `best_two_sum`
[INFO] [stderr]   --> src/leetcode/tencent/two_sum.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn best_two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest_palindrome`
[INFO] [stderr]   --> src/leetcode/tencent/longest_palindrome.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn longest_palindrome(s: String) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `guess_number`
[INFO] [stderr]  --> src/normal_test/mod.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn guess_number() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Study` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `study`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "440af6265b8e7785950e4ef8fa149302d5f1128acdc4013b6a126ffd8786a3a1"`
[INFO] running `"docker" "rm" "-f" "440af6265b8e7785950e4ef8fa149302d5f1128acdc4013b6a126ffd8786a3a1"`
[INFO] [stdout] 440af6265b8e7785950e4ef8fa149302d5f1128acdc4013b6a126ffd8786a3a1
[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/fjhg19930505/rust_leetcode:/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] 1f6bcf7af631120e957641a04a7d8703d07e2019edef0c97dc85fbf6ed5dd5ba
[INFO] running `"docker" "start" "-a" "1f6bcf7af631120e957641a04a7d8703d07e2019edef0c97dc85fbf6ed5dd5ba"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/Study-ba344fc4b2c85fd7
[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" "1f6bcf7af631120e957641a04a7d8703d07e2019edef0c97dc85fbf6ed5dd5ba"`
[INFO] running `"docker" "rm" "-f" "1f6bcf7af631120e957641a04a7d8703d07e2019edef0c97dc85fbf6ed5dd5ba"`
[INFO] [stdout] 1f6bcf7af631120e957641a04a7d8703d07e2019edef0c97dc85fbf6ed5dd5ba