[INFO] cloning repository https://github.com/wty4427300/concurrent
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wty4427300/concurrent" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwty4427300%2Fconcurrent", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwty4427300%2Fconcurrent'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 527120564e297002efc2e33b61179065bb18178e
[INFO] checking wty4427300/concurrent against try#3857be5045fe74bd0f296f6f4c23db10f8857f73 for pr-156807
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwty4427300%2Fconcurrent" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wty4427300/concurrent
[INFO] finished tweaking git repo https://github.com/wty4427300/concurrent
[INFO] tweaked toml for git repo https://github.com/wty4427300/concurrent written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wty4427300/concurrent on toolchain 3857be5045fe74bd0f296f6f4c23db10f8857f73
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wty4427300/concurrent 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" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bfa6d5f1ef0a96d65abf4b5313301bca905eaee30ebdfa993e63c56595033478
[INFO] running `Command { std: "docker" "start" "-a" "bfa6d5f1ef0a96d65abf4b5313301bca905eaee30ebdfa993e63c56595033478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfa6d5f1ef0a96d65abf4b5313301bca905eaee30ebdfa993e63c56595033478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfa6d5f1ef0a96d65abf4b5313301bca905eaee30ebdfa993e63c56595033478", kill_on_drop: false }`
[INFO] [stdout] bfa6d5f1ef0a96d65abf4b5313301bca905eaee30ebdfa993e63c56595033478
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3857be5045fe74bd0f296f6f4c23db10f8857f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5e896a227827dd9a795d225498005739ba06d666cb8ebcca891a604573fbb99
[INFO] running `Command { std: "docker" "start" "-a" "d5e896a227827dd9a795d225498005739ba06d666cb8ebcca891a604573fbb99", kill_on_drop: false }`
[INFO] [stderr]     Checking template v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Metrics` is never constructed
[INFO] [stdout]  --> src/metrics.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Metrics {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `inc`, and `snapshot` are never used
[INFO] [stdout]   --> src/metrics.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Metrics {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn inc(&self, key: impl Into<String>) -> Result<()> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn snapshot(&self) -> Result<HashMap<String, i64>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Metrics` is never constructed
[INFO] [stdout]  --> src/metrics.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Metrics {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `inc`, and `snapshot` are never used
[INFO] [stdout]   --> src/metrics.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Metrics {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn inc(&self, key: impl Into<String>) -> Result<()> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn snapshot(&self) -> Result<HashMap<String, i64>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Metrics` is never constructed
[INFO] [stdout]  --> src/metrics.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Metrics {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `inc`, and `snapshot` are never used
[INFO] [stdout]   --> src/metrics.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Metrics {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn inc(&self, key: impl Into<String>) -> Result<()> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn snapshot(&self) -> Result<HashMap<String, i64>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no associated function or constant named `new` found for struct `Matrix<T>` in the current scope
[INFO] [stdout]   --> examples/matrix.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout]  4 | struct Matrix<T> {
[INFO] [stdout]    | ---------------- associated function or constant `new` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     Ok(Matrix::new())
[INFO] [stdout]    |                ^^^ associated function or constant not found in `Matrix<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `template` (example "matrix") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `Metrics` is never constructed
[INFO] [stdout]  --> src/metrics.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Metrics {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `inc`, and `snapshot` are never used
[INFO] [stdout]   --> src/metrics.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Metrics {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn inc(&self, key: impl Into<String>) -> Result<()> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn snapshot(&self) -> Result<HashMap<String, i64>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d5e896a227827dd9a795d225498005739ba06d666cb8ebcca891a604573fbb99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5e896a227827dd9a795d225498005739ba06d666cb8ebcca891a604573fbb99", kill_on_drop: false }`
[INFO] [stdout] d5e896a227827dd9a795d225498005739ba06d666cb8ebcca891a604573fbb99
