[INFO] cloning repository https://github.com/matpdev/algorithms-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matpdev/algorithms-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatpdev%2Falgorithms-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatpdev%2Falgorithms-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cfbb9c87487eef3a934bc7506a35b78d009cb282
[INFO] checking matpdev/algorithms-rust against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatpdev%2Falgorithms-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matpdev/algorithms-rust on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matpdev/algorithms-rust
[INFO] finished tweaking git repo https://github.com/matpdev/algorithms-rust
[INFO] tweaked toml for git repo https://github.com/matpdev/algorithms-rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matpdev/algorithms-rust 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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "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 matpdev/algorithms-rust against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatpdev%2Falgorithms-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matpdev/algorithms-rust on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matpdev/algorithms-rust
[INFO] finished tweaking git repo https://github.com/matpdev/algorithms-rust
[INFO] tweaked toml for git repo https://github.com/matpdev/algorithms-rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/matpdev/algorithms-rust 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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca118a4c548218c11a1cecab342201c271653c1f0f156759f7e5679318fce199
[INFO] running `Command { std: "docker" "start" "-a" "ca118a4c548218c11a1cecab342201c271653c1f0f156759f7e5679318fce199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca118a4c548218c11a1cecab342201c271653c1f0f156759f7e5679318fce199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca118a4c548218c11a1cecab342201c271653c1f0f156759f7e5679318fce199", kill_on_drop: false }`
[INFO] [stdout] ca118a4c548218c11a1cecab342201c271653c1f0f156759f7e5679318fce199
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa1f9fcb5bd5f2ce697fa3e7767e48a7248c3de4e44ae112eecba7d6376acddc
[INFO] running `Command { std: "docker" "start" "-a" "aa1f9fcb5bd5f2ce697fa3e7767e48a7248c3de4e44ae112eecba7d6376acddc", kill_on_drop: false }`
[INFO] [stderr]     Checking proj17 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::bubble_sort::print_bubble`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::bubble_sort::print_bubble;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::cocktail_sort::print_cocktail`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::cocktail_sort::print_cocktail;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::comb_sort::print_comb`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::comb_sort::print_comb;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::morse_code::print_word_morse`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::morse_code::print_word_morse;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::caesar_crypt::print_caesar`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::caesar_crypt::print_caesar;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::bubble_sort::print_bubble`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::bubble_sort::print_bubble;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::cocktail_sort::print_cocktail`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::cocktail_sort::print_cocktail;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::comb_sort::print_comb`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::comb_sort::print_comb;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::morse_code::print_word_morse`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::morse_code::print_word_morse;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::caesar_crypt::print_caesar`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::caesar_crypt::print_caesar;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bubble_sort` is never used
[INFO] [stdout]  --> src/bubble_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn bubble_sort<T: Ord>(arr: &mut [T]) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_bubble` is never used
[INFO] [stdout]   --> src/bubble_sort.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn print_bubble() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cocktail_shaker_sort` is never used
[INFO] [stdout]  --> src/cocktail_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn cocktail_shaker_sort(arr: &mut Vec<i32>) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_cocktail` is never used
[INFO] [stdout]   --> src/cocktail_sort.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn print_cocktail() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `comb_sort` is never used
[INFO] [stdout]  --> src/comb_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn comb_sort(arr: &mut Vec<i32>) {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_comb` is never used
[INFO] [stdout]   --> src/comb_sort.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn print_comb() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UNKNOWN_CHARACTER` is never used
[INFO] [stdout]  --> src/morse_code.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const UNKNOWN_CHARACTER: &str = "........";
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode` is never used
[INFO] [stdout]  --> src/morse_code.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn encode(message: &str) -> String {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]    --> src/morse_code.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn decode(string: &str) -> Result<String, io::Error> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_word_morse` is never used
[INFO] [stdout]    --> src/morse_code.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn print_word_morse() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `caesar` is never used
[INFO] [stdout]  --> src/caesar_crypt.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn caesar(cipher: &str, shift: u8) -> String {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_caesar` is never used
[INFO] [stdout]   --> src/caesar_crypt.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn print_caesar() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_bubble` is never used
[INFO] [stdout]   --> src/bubble_sort.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn print_bubble() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_cocktail` is never used
[INFO] [stdout]   --> src/cocktail_sort.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn print_cocktail() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_comb` is never used
[INFO] [stdout]   --> src/comb_sort.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn print_comb() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_word_morse` is never used
[INFO] [stdout]    --> src/morse_code.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn print_word_morse() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `caesar` is never used
[INFO] [stdout]  --> src/caesar_crypt.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn caesar(cipher: &str, shift: u8) -> String {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_caesar` is never used
[INFO] [stdout]   --> src/caesar_crypt.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn print_caesar() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "aa1f9fcb5bd5f2ce697fa3e7767e48a7248c3de4e44ae112eecba7d6376acddc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa1f9fcb5bd5f2ce697fa3e7767e48a7248c3de4e44ae112eecba7d6376acddc", kill_on_drop: false }`
[INFO] [stdout] aa1f9fcb5bd5f2ce697fa3e7767e48a7248c3de4e44ae112eecba7d6376acddc