[INFO] cloning repository https://github.com/tsingtwo/2023_ZJU_RUST_HW3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tsingtwo/2023_ZJU_RUST_HW3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsingtwo%2F2023_ZJU_RUST_HW3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsingtwo%2F2023_ZJU_RUST_HW3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a74649acc003ee70cf0a4783d85d9793b63bb94
[INFO] checking tsingtwo/2023_ZJU_RUST_HW3 against try#099af82bc034c1e4895c90e5407fafdd61976cdb for pr-145457
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsingtwo%2F2023_ZJU_RUST_HW3" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3
[INFO] finished tweaking git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3
[INFO] tweaked toml for git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 on toolchain 099af82bc034c1e4895c90e5407fafdd61976cdb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 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" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 062dca3d1d1edd9882e8324d5f0dcdd3f6ffecf9283b887fceacf3d16fb3a1c0
[INFO] running `Command { std: "docker" "start" "-a" "062dca3d1d1edd9882e8324d5f0dcdd3f6ffecf9283b887fceacf3d16fb3a1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "062dca3d1d1edd9882e8324d5f0dcdd3f6ffecf9283b887fceacf3d16fb3a1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "062dca3d1d1edd9882e8324d5f0dcdd3f6ffecf9283b887fceacf3d16fb3a1c0", kill_on_drop: false }`
[INFO] [stdout] 062dca3d1d1edd9882e8324d5f0dcdd3f6ffecf9283b887fceacf3d16fb3a1c0
[INFO] checking tsingtwo/2023_ZJU_RUST_HW3 against try#099af82bc034c1e4895c90e5407fafdd61976cdb for pr-145457
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsingtwo%2F2023_ZJU_RUST_HW3" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3
[INFO] finished tweaking git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3
[INFO] tweaked toml for git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 on toolchain 099af82bc034c1e4895c90e5407fafdd61976cdb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 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" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/image/overlay2/layerdb/mounts/33e867f4bac3364da7d12b459e5e462098058194f60cefcbe13e46690cea0bb7: no space left on device
[INFO] checking tsingtwo/2023_ZJU_RUST_HW3 against try#099af82bc034c1e4895c90e5407fafdd61976cdb for pr-145457
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsingtwo%2F2023_ZJU_RUST_HW3" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3
[INFO] finished tweaking git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3
[INFO] tweaked toml for git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 on toolchain 099af82bc034c1e4895c90e5407fafdd61976cdb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tsingtwo/2023_ZJU_RUST_HW3 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" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38212f0061af16ae0c8a3d54943b1ca6563b91ee871a76bfcde12401947dc502
[INFO] running `Command { std: "docker" "start" "-a" "38212f0061af16ae0c8a3d54943b1ca6563b91ee871a76bfcde12401947dc502", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38212f0061af16ae0c8a3d54943b1ca6563b91ee871a76bfcde12401947dc502", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38212f0061af16ae0c8a3d54943b1ca6563b91ee871a76bfcde12401947dc502", kill_on_drop: false }`
[INFO] [stdout] 38212f0061af16ae0c8a3d54943b1ca6563b91ee871a76bfcde12401947dc502
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 103a24fdd1e441a729faee10325e011f69e77ba98fe2398ac93e8d0b3e5419d9
[INFO] running `Command { std: "docker" "start" "-a" "103a24fdd1e441a729faee10325e011f69e77ba98fe2398ac93e8d0b3e5419d9", kill_on_drop: false }`
[INFO] [stderr]     Checking hw3_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::myrc::Myrc`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::myrc::Myrc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Myrc` is never constructed
[INFO] [stdout]  --> src/myrc.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Myrc<T>{
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `strong_count` are never used
[INFO] [stdout]   --> src/myrc.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> Myrc<T> {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout]  9 |     pub fn new(p:T)->Self{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub fn strong_count(&self)->usize{
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyStack` is never constructed
[INFO] [stdout]  --> src/stack.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct MyStack<T> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> src/stack.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> MyStack<T> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout]  9 |     pub fn new() -> MyStack<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn push(&self, value: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn pop(&self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "103a24fdd1e441a729faee10325e011f69e77ba98fe2398ac93e8d0b3e5419d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "103a24fdd1e441a729faee10325e011f69e77ba98fe2398ac93e8d0b3e5419d9", kill_on_drop: false }`
[INFO] [stdout] 103a24fdd1e441a729faee10325e011f69e77ba98fe2398ac93e8d0b3e5419d9