[INFO] cloning repository https://github.com/tralamthanhha/rust-bootcamp-ex2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tralamthanhha/rust-bootcamp-ex2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftralamthanhha%2Frust-bootcamp-ex2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftralamthanhha%2Frust-bootcamp-ex2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cac3620ff75e345941bb77f602f174ae394d7c2
[INFO] checking tralamthanhha/rust-bootcamp-ex2 against master#be181dd75c83d72fcc95538e235768bc367b76b9 for pr-140208
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftralamthanhha%2Frust-bootcamp-ex2" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tralamthanhha/rust-bootcamp-ex2 on toolchain be181dd75c83d72fcc95538e235768bc367b76b9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+be181dd75c83d72fcc95538e235768bc367b76b9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tralamthanhha/rust-bootcamp-ex2
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/tralamthanhha/rust-bootcamp-ex2
[INFO] tweaked toml for git repo https://github.com/tralamthanhha/rust-bootcamp-ex2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tralamthanhha/rust-bootcamp-ex2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+be181dd75c83d72fcc95538e235768bc367b76b9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+be181dd75c83d72fcc95538e235768bc367b76b9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c904dd798ad96fcd4dbf43c4701d2660eee6d88d62a17cc49f4fb45bb078e69
[INFO] running `Command { std: "docker" "start" "-a" "7c904dd798ad96fcd4dbf43c4701d2660eee6d88d62a17cc49f4fb45bb078e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c904dd798ad96fcd4dbf43c4701d2660eee6d88d62a17cc49f4fb45bb078e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c904dd798ad96fcd4dbf43c4701d2660eee6d88d62a17cc49f4fb45bb078e69", kill_on_drop: false }`
[INFO] [stdout] 7c904dd798ad96fcd4dbf43c4701d2660eee6d88d62a17cc49f4fb45bb078e69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+be181dd75c83d72fcc95538e235768bc367b76b9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02e07e7901ef03bbd6f755d363eab76e42d50a160e9b53365ce6297ae6e6ff9c
[INFO] running `Command { std: "docker" "start" "-a" "02e07e7901ef03bbd6f755d363eab76e42d50a160e9b53365ce6297ae6e6ff9c", kill_on_drop: false }`
[INFO] [stderr]     Checking ownership-borrowing v0.1.0 (/opt/rustwide/workdir/exercises/ownership-borrowing)
[INFO] [stderr]     Checking Rust-Bootcamp-2023 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking basic-of-rust v0.1.0 (/opt/rustwide/workdir/exercises/basic-of-rust)
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> exercises/ownership-borrowing/src/lib.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let y =&mut x;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> exercises/ownership-borrowing/src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let z = &mut x;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]  --> exercises/ownership-borrowing/src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exercise1() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> exercises/ownership-borrowing/src/lib.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let y =&mut x;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn exercise2() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> exercises/ownership-borrowing/src/lib.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let z = &mut x;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownership` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn take_ownership(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn exercise3() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise4` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn exercise4(value: u32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise5` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn exercise5() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise6` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn exercise6() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise7` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn exercise7() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise8` is never used
[INFO] [stdout]    --> exercises/ownership-borrowing/src/lib.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn exercise8() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise1` is never used
[INFO] [stdout]  --> exercises/ownership-borrowing/src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exercise1() {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for (i, part) in string.split(" ").enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn exercise2() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownership` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn take_ownership(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn exercise3() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise4` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn exercise4(value: u32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise5` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn exercise5() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise6` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn exercise6() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise7` is never used
[INFO] [stdout]   --> exercises/ownership-borrowing/src/lib.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn exercise7() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise8` is never used
[INFO] [stdout]    --> exercises/ownership-borrowing/src/lib.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn exercise8() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for (i, part) in string.split(" ").enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bigger` is never used
[INFO] [stdout]  --> exercises/basic-of-rust/src/conditions.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn bigger(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_number` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn check_number(number: isize) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo_if_fizz` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn foo_if_fizz(fizzish: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_leap_year` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn is_leap_year(year: i32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factorial` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn factorial(n: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_prime` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn is_prime(n: u32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise2` is never used
[INFO] [stdout]  --> exercises/basic-of-rust/src/strings.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn exercise2() -> String {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exercise3` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn exercise3() -> String {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_string` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn reverse_string(input: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_palindrome` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn is_palindrome(word: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_char_occurrences` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn count_char_occurrences(string: &str, ch: char) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]  --> exercises/basic-of-rust/src/functions.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn sum(x:isize, y: isize)-> isize {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_one_to_n` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn sum_one_to_n(n: isize) -> isize {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_average` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn calculate_average(numbers: &[f64]) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_even_numbers` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn sum_even_numbers(numbers: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:54:10
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for (i, part) in string.split(" ").enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "02e07e7901ef03bbd6f755d363eab76e42d50a160e9b53365ce6297ae6e6ff9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02e07e7901ef03bbd6f755d363eab76e42d50a160e9b53365ce6297ae6e6ff9c", kill_on_drop: false }`
[INFO] [stdout] 02e07e7901ef03bbd6f755d363eab76e42d50a160e9b53365ce6297ae6e6ff9c