[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 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] bcbcf67eb4ac2f177548ea634d4432bd98531804a77511c9d5dd9a83dc74c24c
[INFO] running `"docker" "start" "-a" "bcbcf67eb4ac2f177548ea634d4432bd98531804a77511c9d5dd9a83dc74c24c"`
[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 2.09s
[INFO] running `"docker" "inspect" "bcbcf67eb4ac2f177548ea634d4432bd98531804a77511c9d5dd9a83dc74c24c"`
[INFO] running `"docker" "rm" "-f" "bcbcf67eb4ac2f177548ea634d4432bd98531804a77511c9d5dd9a83dc74c24c"`
[INFO] [stdout] bcbcf67eb4ac2f177548ea634d4432bd98531804a77511c9d5dd9a83dc74c24c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 075e127a68a499c4b173a3781c467b7c96eaf95ffff111d69cf6a1ccedec34c1
[INFO] running `"docker" "start" "-a" "075e127a68a499c4b173a3781c467b7c96eaf95ffff111d69cf6a1ccedec34c1"`
[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 1.02s
[INFO] running `"docker" "inspect" "075e127a68a499c4b173a3781c467b7c96eaf95ffff111d69cf6a1ccedec34c1"`
[INFO] running `"docker" "rm" "-f" "075e127a68a499c4b173a3781c467b7c96eaf95ffff111d69cf6a1ccedec34c1"`
[INFO] [stdout] 075e127a68a499c4b173a3781c467b7c96eaf95ffff111d69cf6a1ccedec34c1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 2d73b3e721e63f79250fa614297252e770dda31ed16e5a55cbb562f0aa353933
[INFO] running `"docker" "start" "-a" "2d73b3e721e63f79250fa614297252e770dda31ed16e5a55cbb562f0aa353933"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/Study-ea9d5c8d3026b9b6
[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" "2d73b3e721e63f79250fa614297252e770dda31ed16e5a55cbb562f0aa353933"`
[INFO] running `"docker" "rm" "-f" "2d73b3e721e63f79250fa614297252e770dda31ed16e5a55cbb562f0aa353933"`
[INFO] [stdout] 2d73b3e721e63f79250fa614297252e770dda31ed16e5a55cbb562f0aa353933