[INFO] cloning repository https://github.com/jiangzh1206/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jiangzh1206/rust_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiangzh1206%2Frust_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiangzh1206%2Frust_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39128e6a457e26435ae3c2e07b538ccdf6f52abb
[INFO] testing jiangzh1206/rust_learning against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiangzh1206%2Frust_learning" "/workspace/builds/worker-91/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-91/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jiangzh1206/rust_learning on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jiangzh1206/rust_learning
[INFO] finished tweaking git repo https://github.com/jiangzh1206/rust_learning
[INFO] tweaked toml for git repo https://github.com/jiangzh1206/rust_learning written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] crate git repo https://github.com/jiangzh1206/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ca1aa749e2abcab991846438fbbe95494e9869c9debd118d69001e04ba7dd29
[INFO] running `Command { std: "docker" "start" "-a" "0ca1aa749e2abcab991846438fbbe95494e9869c9debd118d69001e04ba7dd29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ca1aa749e2abcab991846438fbbe95494e9869c9debd118d69001e04ba7dd29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ca1aa749e2abcab991846438fbbe95494e9869c9debd118d69001e04ba7dd29", kill_on_drop: false }`
[INFO] [stdout] 0ca1aa749e2abcab991846438fbbe95494e9869c9debd118d69001e04ba7dd29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf4073f6c8789c0819cade53b441b8893758e64219b8c486abcac7ba2be66308
[INFO] running `Command { std: "docker" "start" "-a" "bf4073f6c8789c0819cade53b441b8893758e64219b8c486abcac7ba2be66308", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling rand_core v0.6.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling data_struct v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `print_oddnums`
[INFO] [stdout]   --> src/utils.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn print_oddnums(arr: &[i32])->(i32,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: `shell_sort`
[INFO] [stdout]  --> src/sort/shell.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn shell_sort(arr: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.39s
[INFO] running `Command { std: "docker" "inspect" "bf4073f6c8789c0819cade53b441b8893758e64219b8c486abcac7ba2be66308", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf4073f6c8789c0819cade53b441b8893758e64219b8c486abcac7ba2be66308", kill_on_drop: false }`
[INFO] [stdout] bf4073f6c8789c0819cade53b441b8893758e64219b8c486abcac7ba2be66308
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c10941c29c0a2caf8f58ec5c971c436aad4f2b7ce687773dba14338d90cfb2e
[INFO] running `Command { std: "docker" "start" "-a" "2c10941c29c0a2caf8f58ec5c971c436aad4f2b7ce687773dba14338d90cfb2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling data_struct v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `print_oddnums`
[INFO] [stdout]   --> src/utils.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn print_oddnums(arr: &[i32])->(i32,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: `shell_sort`
[INFO] [stdout]  --> src/sort/shell.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn shell_sort(arr: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "2c10941c29c0a2caf8f58ec5c971c436aad4f2b7ce687773dba14338d90cfb2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c10941c29c0a2caf8f58ec5c971c436aad4f2b7ce687773dba14338d90cfb2e", kill_on_drop: false }`
[INFO] [stdout] 2c10941c29c0a2caf8f58ec5c971c436aad4f2b7ce687773dba14338d90cfb2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0ac0a31707122009d4f97f89179f035b36e7ff1bfa68d9dc916389fbfcff516b
[INFO] running `Command { std: "docker" "start" "-a" "0ac0a31707122009d4f97f89179f035b36e7ff1bfa68d9dc916389fbfcff516b", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `print_oddnums`
[INFO] [stderr]   --> src/utils.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn print_oddnums(arr: &[i32])->(i32,i32){
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shell_sort`
[INFO] [stderr]  --> src/sort/shell.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn shell_sort(arr: &mut [i32]) {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `data_struct` (bin "data_struct" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/data_struct-7e9181bb85a27291)
[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" "0ac0a31707122009d4f97f89179f035b36e7ff1bfa68d9dc916389fbfcff516b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ac0a31707122009d4f97f89179f035b36e7ff1bfa68d9dc916389fbfcff516b", kill_on_drop: false }`
[INFO] [stdout] 0ac0a31707122009d4f97f89179f035b36e7ff1bfa68d9dc916389fbfcff516b