[INFO] cloning repository https://github.com/JGiter/problem_solving_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JGiter/problem_solving_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJGiter%2Fproblem_solving_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJGiter%2Fproblem_solving_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] afee55dd4abf2624abf431d914521aaf014d5b58
[INFO] testing JGiter/problem_solving_rust 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%2FJGiter%2Fproblem_solving_rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JGiter/problem_solving_rust 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/JGiter/problem_solving_rust
[INFO] finished tweaking git repo https://github.com/JGiter/problem_solving_rust
[INFO] tweaked toml for git repo https://github.com/JGiter/problem_solving_rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/JGiter/problem_solving_rust 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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 0b7ff8f6b3eabcf51fe8d822089797417479f4827d63d9dd57044ed4350368a8
[INFO] running `Command { std: "docker" "start" "-a" "0b7ff8f6b3eabcf51fe8d822089797417479f4827d63d9dd57044ed4350368a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b7ff8f6b3eabcf51fe8d822089797417479f4827d63d9dd57044ed4350368a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b7ff8f6b3eabcf51fe8d822089797417479f4827d63d9dd57044ed4350368a8", kill_on_drop: false }`
[INFO] [stdout] 0b7ff8f6b3eabcf51fe8d822089797417479f4827d63d9dd57044ed4350368a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 03892daa385049e5852788a8d32d6d9bd815a6c634061dc9130e98e67d533fc0
[INFO] running `Command { std: "docker" "start" "-a" "03892daa385049e5852788a8d32d6d9bd815a6c634061dc9130e98e67d533fc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling problem_solving_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bst_merge_sort.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/bst_merge_sort.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn add(&mut self, val: i32) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sorted`
[INFO] [stdout]   --> src/bst_merge_sort.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn sorted(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bst_merge_sort`
[INFO] [stdout]   --> src/bst_merge_sort.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn bst_merge_sort(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `frog_jumps`
[INFO] [stdout]  --> src/frog_jumps.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn frog_jumps(stones: Vec<i32>) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `jump`
[INFO] [stdout]   --> src/frog_jumps.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn jump(
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "03892daa385049e5852788a8d32d6d9bd815a6c634061dc9130e98e67d533fc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03892daa385049e5852788a8d32d6d9bd815a6c634061dc9130e98e67d533fc0", kill_on_drop: false }`
[INFO] [stdout] 03892daa385049e5852788a8d32d6d9bd815a6c634061dc9130e98e67d533fc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] b40793855be9b6647bee11b34280a747756875da0a4b21e866cf2d31d1bf315c
[INFO] running `Command { std: "docker" "start" "-a" "b40793855be9b6647bee11b34280a747756875da0a4b21e866cf2d31d1bf315c", kill_on_drop: false }`
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bst_merge_sort.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/bst_merge_sort.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn add(&mut self, val: i32) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sorted`
[INFO] [stdout]   --> src/bst_merge_sort.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn sorted(&self) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling problem_solving_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `bst_merge_sort`
[INFO] [stdout]   --> src/bst_merge_sort.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn bst_merge_sort(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `frog_jumps`
[INFO] [stdout]  --> src/frog_jumps.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn frog_jumps(stones: Vec<i32>) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `jump`
[INFO] [stdout]   --> src/frog_jumps.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn jump(
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "b40793855be9b6647bee11b34280a747756875da0a4b21e866cf2d31d1bf315c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b40793855be9b6647bee11b34280a747756875da0a4b21e866cf2d31d1bf315c", kill_on_drop: false }`
[INFO] [stdout] b40793855be9b6647bee11b34280a747756875da0a4b21e866cf2d31d1bf315c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] df895446a697f7c925d4b03c0549aa24a2be0a07f812707c174290ffd27b55bb
[INFO] running `Command { std: "docker" "start" "-a" "df895446a697f7c925d4b03c0549aa24a2be0a07f812707c174290ffd27b55bb", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/bst_merge_sort.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(val: i32) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add`
[INFO] [stderr]   --> src/bst_merge_sort.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn add(&mut self, val: i32) {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sorted`
[INFO] [stderr]   --> src/bst_merge_sort.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn sorted(&self) -> Vec<i32> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bst_merge_sort`
[INFO] [stderr]   --> src/bst_merge_sort.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn bst_merge_sort(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `frog_jumps`
[INFO] [stderr]  --> src/frog_jumps.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn frog_jumps(stones: Vec<i32>) -> bool {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `jump`
[INFO] [stderr]   --> src/frog_jumps.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn jump(
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `problem_solving_rust` (lib) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/problem_solving-9dbf2a2c448fcb50)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test bst_merge_sort::test ... ok
[INFO] [stdout] test frog_jumps::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests problem_solving
[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" "df895446a697f7c925d4b03c0549aa24a2be0a07f812707c174290ffd27b55bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df895446a697f7c925d4b03c0549aa24a2be0a07f812707c174290ffd27b55bb", kill_on_drop: false }`
[INFO] [stdout] df895446a697f7c925d4b03c0549aa24a2be0a07f812707c174290ffd27b55bb