[INFO] updating cached repository https://github.com/zhanlanlan/hello_rust
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5c8e13deae8ad6c34b5ea9b86140ebe993189532
[INFO] checking zhanlanlan/hello_rust against master#0cbcb17d3306d6e22eafc2c05ce885db97d0189c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhanlanlan%2Fhello_rust" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhanlanlan/hello_rust on toolchain 0cbcb17d3306d6e22eafc2c05ce885db97d0189c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zhanlanlan/hello_rust
[INFO] finished tweaking git repo https://github.com/zhanlanlan/hello_rust
[INFO] tweaked toml for git repo https://github.com/zhanlanlan/hello_rust written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/zhanlanlan/hello_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "/opt/rustwide/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8b58a778129f817c438617fd3db31fb21592abfb23eb7c21ff57ea51c0500354
[INFO] running `"docker" "start" "-a" "8b58a778129f817c438617fd3db31fb21592abfb23eb7c21ff57ea51c0500354"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking pin-project-lite v0.1.2
[INFO] [stderr]     Checking typed-arena v1.6.1
[INFO] [stderr]     Checking getrandom v0.1.12
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking toolshed v0.8.1
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling tokio-macros v0.2.1
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]     Checking hello_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/rbe/list_dir.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/rbe/list_dir.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/rbe/list_dir.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/rbe/list_dir.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gene`
[INFO] [stderr]  --> src/rbe/generate_random.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn gene() {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]   --> src/rbe/generate_random.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn run() {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `listdir`
[INFO] [stderr]  --> src/rbe/list_dir.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn listdir(&mut self, path: &PathBuf) {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]   --> src/rbe/list_dir.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn run() {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]  --> src/rbe/ray_.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn run() {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_of_squares`
[INFO] [stderr]   --> src/rbe/ray_.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn sum_of_squares(input: &Vec<i64>) -> i64 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gene`
[INFO] [stderr]  --> src/rbe/generate_random.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn gene() {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]   --> src/rbe/generate_random.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn run() {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `listdir`
[INFO] [stderr]  --> src/rbe/list_dir.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn listdir(&mut self, path: &PathBuf) {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]   --> src/rbe/list_dir.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn run() {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]  --> src/rbe/ray_.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn run() {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_of_squares`
[INFO] [stderr]   --> src/rbe/ray_.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn sum_of_squares(input: &Vec<i64>) -> i64 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.11s
[INFO] running `"docker" "inspect" "8b58a778129f817c438617fd3db31fb21592abfb23eb7c21ff57ea51c0500354"`
[INFO] running `"docker" "rm" "-f" "8b58a778129f817c438617fd3db31fb21592abfb23eb7c21ff57ea51c0500354"`
[INFO] [stdout] 8b58a778129f817c438617fd3db31fb21592abfb23eb7c21ff57ea51c0500354