[INFO] cloning repository https://github.com/larkintuckerllc/r06_enums
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/larkintuckerllc/r06_enums" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarkintuckerllc%2Fr06_enums", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarkintuckerllc%2Fr06_enums'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0952b64cb955e5a3758f586ced8c04a2fed30ad
[INFO] checking larkintuckerllc/r06_enums against master#4e1f5d90bca45207605a88e39b1f76abcdb85d2f for pr-123962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarkintuckerllc%2Fr06_enums" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/larkintuckerllc/r06_enums on toolchain 4e1f5d90bca45207605a88e39b1f76abcdb85d2f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e1f5d90bca45207605a88e39b1f76abcdb85d2f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/larkintuckerllc/r06_enums
[INFO] finished tweaking git repo https://github.com/larkintuckerllc/r06_enums
[INFO] tweaked toml for git repo https://github.com/larkintuckerllc/r06_enums written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/larkintuckerllc/r06_enums 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" "+4e1f5d90bca45207605a88e39b1f76abcdb85d2f" "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 larkintuckerllc/r06_enums against try#035f40fb95ac1c79b50f07e65650460f3d11e207 for pr-123962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flarkintuckerllc%2Fr06_enums" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/larkintuckerllc/r06_enums on toolchain 035f40fb95ac1c79b50f07e65650460f3d11e207
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/larkintuckerllc/r06_enums
[INFO] finished tweaking git repo https://github.com/larkintuckerllc/r06_enums
[INFO] tweaked toml for git repo https://github.com/larkintuckerllc/r06_enums written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/larkintuckerllc/r06_enums 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" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fc1a052a9468a774634331ef2c5e6436eb18198b600eae9bf87d93fb62aed0e
[INFO] running `Command { std: "docker" "start" "-a" "5fc1a052a9468a774634331ef2c5e6436eb18198b600eae9bf87d93fb62aed0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fc1a052a9468a774634331ef2c5e6436eb18198b600eae9bf87d93fb62aed0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fc1a052a9468a774634331ef2c5e6436eb18198b600eae9bf87d93fb62aed0e", kill_on_drop: false }`
[INFO] [stdout] 5fc1a052a9468a774634331ef2c5e6436eb18198b600eae9bf87d93fb62aed0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+035f40fb95ac1c79b50f07e65650460f3d11e207" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76ccb929b0854f31b932ceac19194581edfd1cf190e3383cf7d1cb4e799d5665
[INFO] running `Command { std: "docker" "start" "-a" "76ccb929b0854f31b932ceac19194581edfd1cf190e3383cf7d1cb4e799d5665", kill_on_drop: false }`
[INFO] [stderr]     Checking r06_enums v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let six = plus_one(five);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let none = plus_one(None);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let six = plus_one(five);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let none = plus_one(None);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel`, `Dime`, and `Euro` are never constructed
[INFO] [stdout]   --> src/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 41 |     Penny,
[INFO] [stdout] 42 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 43 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 44 |     Quarter(i32),
[INFO] [stdout] 45 |     Euro,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel`, `Dime`, and `Euro` are never constructed
[INFO] [stdout]   --> src/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 41 |     Penny,
[INFO] [stdout] 42 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 43 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 44 |     Quarter(i32),
[INFO] [stdout] 45 |     Euro,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "76ccb929b0854f31b932ceac19194581edfd1cf190e3383cf7d1cb4e799d5665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76ccb929b0854f31b932ceac19194581edfd1cf190e3383cf7d1cb4e799d5665", kill_on_drop: false }`
[INFO] [stdout] 76ccb929b0854f31b932ceac19194581edfd1cf190e3383cf7d1cb4e799d5665