[INFO] cloning repository https://github.com/ghanshyamkryadav2001/rust-ques-sol-ghanu-2001
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ghanshyamkryadav2001/rust-ques-sol-ghanu-2001" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghanshyamkryadav2001%2Frust-ques-sol-ghanu-2001", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghanshyamkryadav2001%2Frust-ques-sol-ghanu-2001'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 361b8e639f30a5242e5958d7ea89e8ed32e7e8c8
[INFO] testing ghanshyamkryadav2001/rust-ques-sol-ghanu-2001 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghanshyamkryadav2001%2Frust-ques-sol-ghanu-2001" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ghanshyamkryadav2001/rust-ques-sol-ghanu-2001
[INFO] finished tweaking git repo https://github.com/ghanshyamkryadav2001/rust-ques-sol-ghanu-2001
[INFO] tweaked toml for git repo https://github.com/ghanshyamkryadav2001/rust-ques-sol-ghanu-2001 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ghanshyamkryadav2001/rust-ques-sol-ghanu-2001 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ghanshyamkryadav2001/rust-ques-sol-ghanu-2001 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2
[INFO] running `Command { std: "docker" "start" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling quadtech v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `TreeNode` is more private than the item `max_depth`
[INFO] [stdout]  --> src/max_depth.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn max_depth(root: &Option<Box<TreeNode>>) -> i32 {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `max_depth` is reachable at visibility `pub(crate)`
[INFO] [stdout]   |
[INFO] [stdout] note: but type `TreeNode` is only usable at visibility `pub(self)`
[INFO] [stdout]  --> src/max_depth.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct TreeNode {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]  --> src/max_depth.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct TreeNode {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] 4 |     val: i32,                         
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling quadtech v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `TreeNode` is more private than the item `max_depth`
[INFO] [stdout]  --> src/max_depth.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn max_depth(root: &Option<Box<TreeNode>>) -> i32 {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `max_depth` is reachable at visibility `pub(crate)`
[INFO] [stdout]   |
[INFO] [stdout] note: but type `TreeNode` is only usable at visibility `pub(self)`
[INFO] [stdout]  --> src/max_depth.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct TreeNode {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout]   = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]  --> src/max_depth.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct TreeNode {
[INFO] [stdout]   |        -------- field in this struct
[INFO] [stdout] 4 |     val: i32,                         
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: type `TreeNode` is more private than the item `max_depth`
[INFO] [stderr]  --> src/max_depth.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn max_depth(root: &Option<Box<TreeNode>>) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `max_depth` is reachable at visibility `pub(crate)`
[INFO] [stderr]   |
[INFO] [stderr] note: but type `TreeNode` is only usable at visibility `pub(self)`
[INFO] [stderr]  --> src/max_depth.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct TreeNode {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `val` is never read
[INFO] [stderr]  --> src/max_depth.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct TreeNode {
[INFO] [stderr]   |        -------- field in this struct
[INFO] [stderr] 4 |     val: i32,                         
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `quadtech` (bin "quadtech" test) generated 2 warnings
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/quadtech-afb1194eb4537145)
[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" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2", kill_on_drop: false }`
[INFO] [stdout] f774d8fd44fbca1564d8c54ef786151799eac734d9f6d030271233313d94f3d2