[INFO] cloning repository https://github.com/anetcher/rust_boj
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anetcher/rust_boj" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanetcher%2Frust_boj", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanetcher%2Frust_boj'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7cd9e1dc6f668f6fa18b71f6428411907d69269c
[INFO] testing anetcher/rust_boj against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanetcher%2Frust_boj" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anetcher/rust_boj on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anetcher/rust_boj
[INFO] finished tweaking git repo https://github.com/anetcher/rust_boj
[INFO] tweaked toml for git repo https://github.com/anetcher/rust_boj written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/anetcher/rust_boj already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b92583caa1410083d13f80933420e6c2b01fa779948f251b489d6c914b057c1
[INFO] running `Command { std: "docker" "start" "-a" "5b92583caa1410083d13f80933420e6c2b01fa779948f251b489d6c914b057c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b92583caa1410083d13f80933420e6c2b01fa779948f251b489d6c914b057c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b92583caa1410083d13f80933420e6c2b01fa779948f251b489d6c914b057c1", kill_on_drop: false }`
[INFO] [stdout] 5b92583caa1410083d13f80933420e6c2b01fa779948f251b489d6c914b057c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ee8aadef5dd21f338af0718704ca70757b1900290cc084a0e082016b4809e94
[INFO] running `Command { std: "docker" "start" "-a" "3ee8aadef5dd21f338af0718704ca70757b1900290cc084a0e082016b4809e94", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_boj v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/print_star/_2442.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     for i in 0..N {
[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 is never used: `print_self_number`
[INFO] [stdout]  --> src/_4673.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn print_self_number(limit: i32) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `d`
[INFO] [stdout]   --> src/_4673.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn d(n: &i32) -> i32 {
[INFO] [stdout]    |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `accumulate`
[INFO] [stdout]   --> src/_4673.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn accumulate(x: &i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_star`
[INFO] [stdout]  --> src/print_star/_2442.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn print_star() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]  --> src/print_star/_2442.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut N: i32 = 0;
[INFO] [stdout]   |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "3ee8aadef5dd21f338af0718704ca70757b1900290cc084a0e082016b4809e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ee8aadef5dd21f338af0718704ca70757b1900290cc084a0e082016b4809e94", kill_on_drop: false }`
[INFO] [stdout] 3ee8aadef5dd21f338af0718704ca70757b1900290cc084a0e082016b4809e94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cffcd9ad0e2024589b1e630ce239525a8e3ed5a574fe2f252fc2cfbf9be9cbd9
[INFO] running `Command { std: "docker" "start" "-a" "cffcd9ad0e2024589b1e630ce239525a8e3ed5a574fe2f252fc2cfbf9be9cbd9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_boj v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/print_star/_2442.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     for i in 0..N {
[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 is never used: `print_self_number`
[INFO] [stdout]  --> src/_4673.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn print_self_number(limit: i32) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `d`
[INFO] [stdout]   --> src/_4673.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn d(n: &i32) -> i32 {
[INFO] [stdout]    |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `accumulate`
[INFO] [stdout]   --> src/_4673.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn accumulate(x: &i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_star`
[INFO] [stdout]  --> src/print_star/_2442.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn print_star() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]  --> src/print_star/_2442.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut N: i32 = 0;
[INFO] [stdout]   |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `Command { std: "docker" "inspect" "cffcd9ad0e2024589b1e630ce239525a8e3ed5a574fe2f252fc2cfbf9be9cbd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cffcd9ad0e2024589b1e630ce239525a8e3ed5a574fe2f252fc2cfbf9be9cbd9", kill_on_drop: false }`
[INFO] [stdout] cffcd9ad0e2024589b1e630ce239525a8e3ed5a574fe2f252fc2cfbf9be9cbd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5c2ff15d871b9621207f071d2347740393d3b6344e2398060d7735c546eda42d
[INFO] running `Command { std: "docker" "start" "-a" "5c2ff15d871b9621207f071d2347740393d3b6344e2398060d7735c546eda42d", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/print_star/_2442.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     for i in 0..N {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_self_number`
[INFO] [stderr]  --> src/_4673.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn print_self_number(limit: i32) {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `d`
[INFO] [stderr]   --> src/_4673.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn d(n: &i32) -> i32 {
[INFO] [stderr]    |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `accumulate`
[INFO] [stderr]   --> src/_4673.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn accumulate(x: &i32) -> i32 {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_star`
[INFO] [stderr]  --> src/print_star/_2442.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn print_star() {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]  --> src/print_star/_2442.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut N: i32 = 0;
[INFO] [stderr]   |             ^ help: convert the identifier to snake case: `n`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_boj` (bin "rust_boj" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_boj-8674613c20388c3f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5c2ff15d871b9621207f071d2347740393d3b6344e2398060d7735c546eda42d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c2ff15d871b9621207f071d2347740393d3b6344e2398060d7735c546eda42d", kill_on_drop: false }`
[INFO] [stdout] 5c2ff15d871b9621207f071d2347740393d3b6344e2398060d7735c546eda42d