[INFO] cloning repository https://github.com/toan01072003/Rust1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/toan01072003/Rust1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoan01072003%2FRust1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoan01072003%2FRust1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62641a22b1f64f73cadbe86c3f9075911c57ebe8
[INFO] checking toan01072003/Rust1 against try#2277c63fa464d237b17b68d3b87f9fbb89e58a3e for pr-133570-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoan01072003%2FRust1" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/toan01072003/Rust1 on toolchain 2277c63fa464d237b17b68d3b87f9fbb89e58a3e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2277c63fa464d237b17b68d3b87f9fbb89e58a3e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/toan01072003/Rust1
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/toan01072003/Rust1
[INFO] tweaked toml for git repo https://github.com/toan01072003/Rust1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/toan01072003/Rust1 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" "+2277c63fa464d237b17b68d3b87f9fbb89e58a3e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking toan01072003/Rust1 against try#2277c63fa464d237b17b68d3b87f9fbb89e58a3e for pr-133570-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftoan01072003%2FRust1" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/toan01072003/Rust1 on toolchain 2277c63fa464d237b17b68d3b87f9fbb89e58a3e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2277c63fa464d237b17b68d3b87f9fbb89e58a3e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/toan01072003/Rust1
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/toan01072003/Rust1
[INFO] tweaked toml for git repo https://github.com/toan01072003/Rust1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/toan01072003/Rust1 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" "+2277c63fa464d237b17b68d3b87f9fbb89e58a3e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+2277c63fa464d237b17b68d3b87f9fbb89e58a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b18d7598466b9d4792906fd5984d5a86312ca75d5776f6fbdc6175604d05cf2
[INFO] running `Command { std: "docker" "start" "-a" "3b18d7598466b9d4792906fd5984d5a86312ca75d5776f6fbdc6175604d05cf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b18d7598466b9d4792906fd5984d5a86312ca75d5776f6fbdc6175604d05cf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b18d7598466b9d4792906fd5984d5a86312ca75d5776f6fbdc6175604d05cf2", kill_on_drop: false }`
[INFO] [stdout] 3b18d7598466b9d4792906fd5984d5a86312ca75d5776f6fbdc6175604d05cf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+2277c63fa464d237b17b68d3b87f9fbb89e58a3e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd8d4943f3ca38a499116264d0301363c2121dd8e1273bee809a6e376a6e17b0
[INFO] running `Command { std: "docker" "start" "-a" "cd8d4943f3ca38a499116264d0301363c2121dd8e1273bee809a6e376a6e17b0", kill_on_drop: false }`
[INFO] [stderr]     Checking basic-of-rust v0.1.0 (/opt/rustwide/workdir/exercises/basic-of-rust)
[INFO] [stderr]     Checking Rust-Bootcamp-2023 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]  --> exercises/basic-of-rust/src/strings.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exercise1(color: &str) -> String {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut sum: i32 = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut result: f64 = 0.0; 
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn check_number(number: i32) -> &'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:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | 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:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | 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:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn factorial(n: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_prime` is never used
[INFO] [stdout]   --> exercises/basic-of-rust/src/conditions.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | 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(s: &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:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn is_palindrome(s: &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:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | 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: i32, y: i32) {
[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: i32) -> i32 {
[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:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn sum_even_numbers(numbers: &[i32]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]  --> exercises/basic-of-rust/src/functions.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     x + y;
[INFO] [stdout]   |     ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let _ = x + y;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut sum: i32 = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut result: f64 = 0.0; 
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]  --> exercises/basic-of-rust/src/strings.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exercise1(color: &str) -> String {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[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: i32, y: i32) {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]  --> exercises/basic-of-rust/src/functions.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     x + y;
[INFO] [stdout]   |     ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let _ = x + y;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]  --> exercises/basic-of-rust/src/strings.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn exercise1(color: &str) -> String {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut sum: i32 = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> exercises/basic-of-rust/src/functions.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut result: f64 = 0.0; 
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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: i32, y: i32) {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]  --> exercises/basic-of-rust/src/functions.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     x + y;
[INFO] [stdout]   |     ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let _ = x + y;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "cd8d4943f3ca38a499116264d0301363c2121dd8e1273bee809a6e376a6e17b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd8d4943f3ca38a499116264d0301363c2121dd8e1273bee809a6e376a6e17b0", kill_on_drop: false }`
[INFO] [stdout] cd8d4943f3ca38a499116264d0301363c2121dd8e1273bee809a6e376a6e17b0