[INFO] updating cached repository https://github.com/tostaylo/rust-leet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a906878c64aac66a50287d73a0e980416fe4c05
[INFO] checking tostaylo/rust-leet against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftostaylo%2Frust-leet" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tostaylo/rust-leet on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tostaylo/rust-leet
[INFO] finished tweaking git repo https://github.com/tostaylo/rust-leet
[INFO] tweaked toml for git repo https://github.com/tostaylo/rust-leet written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/tostaylo/rust-leet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2bd2731d3156d9871d631d7ba0718a6630cf1c6b766d6f42a35533296f454fd9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2bd2731d3156d9871d631d7ba0718a6630cf1c6b766d6f42a35533296f454fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bd2731d3156d9871d631d7ba0718a6630cf1c6b766d6f42a35533296f454fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd2731d3156d9871d631d7ba0718a6630cf1c6b766d6f42a35533296f454fd9", kill_on_drop: false }`
[INFO] [stdout] 2bd2731d3156d9871d631d7ba0718a6630cf1c6b766d6f42a35533296f454fd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc70168bd03ac4c8849a43f5df7d456863f7a2cfc1ce56fbec4ec192238a779d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fc70168bd03ac4c8849a43f5df7d456863f7a2cfc1ce56fbec4ec192238a779d", 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] [stderr]     Checking rust-leet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `contains_duplicates`
[INFO] [stdout]   --> src/contains_duplicates.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn contains_duplicates(nums: Vec<i32>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `count_and_say`
[INFO] [stdout]  --> src/count_and_say.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn count_and_say(n: i32) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `count_chars`
[INFO] [stdout]  --> src/count_and_say.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn count_chars(s: String, n: i32) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_uniq_char`
[INFO] [stdout]  --> src/first_uniq_char.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn first_uniq_char(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `intersect`
[INFO] [stdout]  --> src/intersect.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn intersect(nums1: Vec<i32>, nums2: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_anagram`
[INFO] [stdout]  --> src/is_anagram.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn is_anagram(s: String, t: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_palindrome`
[INFO] [stdout]  --> src/is_palindrome.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_palindrome(s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_common_prefix`
[INFO] [stdout]  --> src/longest_common_prefix.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn longest_common_prefix(strings: Vec<String>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `move_zeroes`
[INFO] [stdout]  --> src/move_zeroes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn move_zeroes(nums: &mut Vec<i32>) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_duplicates_sorted_array`
[INFO] [stdout]  --> src/remove_duplicates_sorted_array.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn remove_duplicates_sorted_array(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse_string`
[INFO] [stdout]  --> src/reverse_string.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn reverse_string(s: &mut Vec<char>) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotate_array`
[INFO] [stdout]  --> src/rotate_array.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn rotate_array(nums: &mut Vec<i32>, k: i32) {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotate_image`
[INFO] [stdout]  --> src/rotate_image.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn rotate_image(matrix: &mut Vec<Vec<i32>>) {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `single_number`
[INFO] [stdout]  --> src/single_number.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `str_str`
[INFO] [stdout]  --> src/str_str.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `two_sum`
[INFO] [stdout]  --> src/two_sum.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "fc70168bd03ac4c8849a43f5df7d456863f7a2cfc1ce56fbec4ec192238a779d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc70168bd03ac4c8849a43f5df7d456863f7a2cfc1ce56fbec4ec192238a779d", kill_on_drop: false }`
[INFO] [stdout] fc70168bd03ac4c8849a43f5df7d456863f7a2cfc1ce56fbec4ec192238a779d