[INFO] cloning repository https://github.com/saurabhghatnekar/Rust101
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/saurabhghatnekar/Rust101" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaurabhghatnekar%2FRust101", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaurabhghatnekar%2FRust101'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e6b3cdb8b21a25c0fe594d16e7283b47caf0c89
[INFO] checking saurabhghatnekar/Rust101 against master#73252d51d13c0e4f872c3c51defcf48174860ef6 for pr-119989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaurabhghatnekar%2FRust101" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/saurabhghatnekar/Rust101 on toolchain 73252d51d13c0e4f872c3c51defcf48174860ef6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+73252d51d13c0e4f872c3c51defcf48174860ef6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/saurabhghatnekar/Rust101
[INFO] finished tweaking git repo https://github.com/saurabhghatnekar/Rust101
[INFO] tweaked toml for git repo https://github.com/saurabhghatnekar/Rust101 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/saurabhghatnekar/Rust101 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" "+73252d51d13c0e4f872c3c51defcf48174860ef6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking saurabhghatnekar/Rust101 against try#5d004039df46bb665b8ed6385386e3b1b007a6a8 for pr-119989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsaurabhghatnekar%2FRust101" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/saurabhghatnekar/Rust101 on toolchain 5d004039df46bb665b8ed6385386e3b1b007a6a8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5d004039df46bb665b8ed6385386e3b1b007a6a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/saurabhghatnekar/Rust101
[INFO] finished tweaking git repo https://github.com/saurabhghatnekar/Rust101
[INFO] tweaked toml for git repo https://github.com/saurabhghatnekar/Rust101 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/saurabhghatnekar/Rust101 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" "+5d004039df46bb665b8ed6385386e3b1b007a6a8" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5d004039df46bb665b8ed6385386e3b1b007a6a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e97ce8ef2e64e4030eb3ec2ccac77f757615e279469c3d7842c813e9ff954f0
[INFO] running `Command { std: "docker" "start" "-a" "7e97ce8ef2e64e4030eb3ec2ccac77f757615e279469c3d7842c813e9ff954f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e97ce8ef2e64e4030eb3ec2ccac77f757615e279469c3d7842c813e9ff954f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e97ce8ef2e64e4030eb3ec2ccac77f757615e279469c3d7842c813e9ff954f0", kill_on_drop: false }`
[INFO] [stdout] 7e97ce8ef2e64e4030eb3ec2ccac77f757615e279469c3d7842c813e9ff954f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5d004039df46bb665b8ed6385386e3b1b007a6a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68daf843d7699d0c66856aacfecc93a49631035efc18a3147b3ee2888a0204d0
[INFO] running `Command { std: "docker" "start" "-a" "68daf843d7699d0c66856aacfecc93a49631035efc18a3147b3ee2888a0204d0", kill_on_drop: false }`
[INFO] [stderr]     Checking Rust101 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `person`
[INFO] [stdout]   --> src/bin/task_1.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let person = Person { name: "Billy".to_owned(), age: 21 };
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_person`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `person`
[INFO] [stdout]   --> src/bin/task_1.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let person = Person { name: "Billy".to_owned(), age: 21 };
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_person`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `library`
[INFO] [stdout]   --> src/bin/task_1.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let library = Library {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_library`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]  --> src/bin/task_1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Person {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 2 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 3 |     age: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `title`, `author`, and `is_available` are never read
[INFO] [stdout]  --> src/bin/task_1.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Book {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 7 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 8 |     author: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     is_available: bool,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `books` is never read
[INFO] [stdout]   --> src/bin/task_1.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Library {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 13 |     books: Vec<Book>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `library`
[INFO] [stdout]   --> src/bin/task_1.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let library = Library {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_library`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]  --> src/bin/task_1.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Person {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 2 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 3 |     age: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `title`, `author`, and `is_available` are never read
[INFO] [stdout]  --> src/bin/task_1.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Book {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 7 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 8 |     author: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     is_available: bool,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `books` is never read
[INFO] [stdout]   --> src/bin/task_1.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Library {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 13 |     books: Vec<Book>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Rust101` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust101`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Rust101` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rust101`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "68daf843d7699d0c66856aacfecc93a49631035efc18a3147b3ee2888a0204d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68daf843d7699d0c66856aacfecc93a49631035efc18a3147b3ee2888a0204d0", kill_on_drop: false }`
[INFO] [stdout] 68daf843d7699d0c66856aacfecc93a49631035efc18a3147b3ee2888a0204d0