[INFO] cloning repository https://github.com/therustdeveloper/mastering_backend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/therustdeveloper/mastering_backend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftherustdeveloper%2Fmastering_backend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftherustdeveloper%2Fmastering_backend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1971fb1eb094ea6b4b72b668f3de41fa382c513
[INFO] checking therustdeveloper/mastering_backend against try#d12484522bcab8d07e325c6570f226a2faace3f7 for pr-128425-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftherustdeveloper%2Fmastering_backend" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/therustdeveloper/mastering_backend on toolchain d12484522bcab8d07e325c6570f226a2faace3f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d12484522bcab8d07e325c6570f226a2faace3f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/therustdeveloper/mastering_backend
[INFO] finished tweaking git repo https://github.com/therustdeveloper/mastering_backend
[INFO] tweaked toml for git repo https://github.com/therustdeveloper/mastering_backend written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/therustdeveloper/mastering_backend 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" "+d12484522bcab8d07e325c6570f226a2faace3f7" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking therustdeveloper/mastering_backend against try#d12484522bcab8d07e325c6570f226a2faace3f7 for pr-128425-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftherustdeveloper%2Fmastering_backend" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/therustdeveloper/mastering_backend on toolchain d12484522bcab8d07e325c6570f226a2faace3f7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d12484522bcab8d07e325c6570f226a2faace3f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/therustdeveloper/mastering_backend
[INFO] finished tweaking git repo https://github.com/therustdeveloper/mastering_backend
[INFO] tweaked toml for git repo https://github.com/therustdeveloper/mastering_backend written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/therustdeveloper/mastering_backend 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" "+d12484522bcab8d07e325c6570f226a2faace3f7" "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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d12484522bcab8d07e325c6570f226a2faace3f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92bf205dfe43b859b0c743c21c4550bfd81b1d57f1e65634e6ae411e6e27d21f
[INFO] running `Command { std: "docker" "start" "-a" "92bf205dfe43b859b0c743c21c4550bfd81b1d57f1e65634e6ae411e6e27d21f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92bf205dfe43b859b0c743c21c4550bfd81b1d57f1e65634e6ae411e6e27d21f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92bf205dfe43b859b0c743c21c4550bfd81b1d57f1e65634e6ae411e6e27d21f", kill_on_drop: false }`
[INFO] [stdout] 92bf205dfe43b859b0c743c21c4550bfd81b1d57f1e65634e6ae411e6e27d21f
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d12484522bcab8d07e325c6570f226a2faace3f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 451c18d4b0b8ee22ebf5fb160ad3e7e630f23d2a479885781602bb1db14c42dc
[INFO] running `Command { std: "docker" "start" "-a" "451c18d4b0b8ee22ebf5fb160ad3e7e630f23d2a479885781602bb1db14c42dc", kill_on_drop: false }`
[INFO] [stderr]     Checking mastering_backend v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `people`
[INFO] [stdout]   --> src/vectors/definition.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let people: Vec<Person> = vec![
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_people`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filters`
[INFO] [stdout]   --> src/vectors/definition.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let filters: Vec<FilterOptions> = vec![
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filters`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mixed`
[INFO] [stdout]   --> src/vectors/definition.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mixed: Vec<Box<dyn std::fmt::Debug>> = vec![Box::new(42), Box::new("Alice".to_string())];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_mixed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `people`
[INFO] [stdout]   --> src/vectors/definition.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let people: Vec<Person> = vec![
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_people`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filters`
[INFO] [stdout]   --> src/vectors/definition.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let filters: Vec<FilterOptions> = vec![
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filters`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mixed`
[INFO] [stdout]   --> src/vectors/definition.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mixed: Vec<Box<dyn std::fmt::Debug>> = vec![Box::new(42), Box::new("Alice".to_string())];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_mixed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/vectors/definition.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     struct Person {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 46 |         name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 47 |         age: u32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]   --> src/vectors/definition.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     struct Person {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 46 |         name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 47 |         age: u32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "451c18d4b0b8ee22ebf5fb160ad3e7e630f23d2a479885781602bb1db14c42dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "451c18d4b0b8ee22ebf5fb160ad3e7e630f23d2a479885781602bb1db14c42dc", kill_on_drop: false }`
[INFO] [stdout] 451c18d4b0b8ee22ebf5fb160ad3e7e630f23d2a479885781602bb1db14c42dc