[INFO] cloning repository https://github.com/mpipess/rust-chippy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mpipess/rust-chippy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpipess%2Frust-chippy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpipess%2Frust-chippy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ed12ac375aafb124a27564782a815fde988814a
[INFO] checking mpipess/rust-chippy against master#e08b80c0fb7667bdcd040761891701e576c42ec8 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpipess%2Frust-chippy" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mpipess/rust-chippy on toolchain e08b80c0fb7667bdcd040761891701e576c42ec8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mpipess/rust-chippy
[INFO] finished tweaking git repo https://github.com/mpipess/rust-chippy
[INFO] tweaked toml for git repo https://github.com/mpipess/rust-chippy written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mpipess/rust-chippy 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" "+e08b80c0fb7667bdcd040761891701e576c42ec8" "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 mpipess/rust-chippy against try#f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpipess%2Frust-chippy" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mpipess/rust-chippy on toolchain f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mpipess/rust-chippy
[INFO] finished tweaking git repo https://github.com/mpipess/rust-chippy
[INFO] tweaked toml for git repo https://github.com/mpipess/rust-chippy written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mpipess/rust-chippy 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" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "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 mpipess/rust-chippy against try#f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5 for pr-129021
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpipess%2Frust-chippy" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mpipess/rust-chippy on toolchain f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mpipess/rust-chippy
[INFO] finished tweaking git repo https://github.com/mpipess/rust-chippy
[INFO] tweaked toml for git repo https://github.com/mpipess/rust-chippy written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mpipess/rust-chippy 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" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06f9b3e4eeb7653a43effe23c69bf5383a3dad9f3bbfc7fcffdef9e7a9c1a152
[INFO] running `Command { std: "docker" "start" "-a" "06f9b3e4eeb7653a43effe23c69bf5383a3dad9f3bbfc7fcffdef9e7a9c1a152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06f9b3e4eeb7653a43effe23c69bf5383a3dad9f3bbfc7fcffdef9e7a9c1a152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06f9b3e4eeb7653a43effe23c69bf5383a3dad9f3bbfc7fcffdef9e7a9c1a152", kill_on_drop: false }`
[INFO] [stdout] 06f9b3e4eeb7653a43effe23c69bf5383a3dad9f3bbfc7fcffdef9e7a9c1a152
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f781a78d815e6a304bf6061b8a8fa69d7ce8dfd5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef6ded18e20bb11fea973f12a5b7cb8b7abbb8ba9e26517774acd81d8c3a329b
[INFO] running `Command { std: "docker" "start" "-a" "ef6ded18e20bb11fea973f12a5b7cb8b7abbb8ba9e26517774acd81d8c3a329b", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-chippy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/chippy.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let n = nybbles.3 as u8;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/chippy.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let n = nybbles.3 as u8;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `dmem`, `stack`, and `sp` are never read
[INFO] [stdout]  --> src/chippy.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Chippy {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     pub pmem: [u16; 4096],
[INFO] [stdout] 3 |     pub dmem: [u8; 4096],
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 4 |     stack: [u16; 16],
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 7 |     sp: u8,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `dmem`, `stack`, and `sp` are never read
[INFO] [stdout]  --> src/chippy.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Chippy {
[INFO] [stdout]   |            ------ fields in this struct
[INFO] [stdout] 2 |     pub pmem: [u16; 4096],
[INFO] [stdout] 3 |     pub dmem: [u8; 4096],
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 4 |     stack: [u16; 16],
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 7 |     sp: u8,
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "ef6ded18e20bb11fea973f12a5b7cb8b7abbb8ba9e26517774acd81d8c3a329b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef6ded18e20bb11fea973f12a5b7cb8b7abbb8ba9e26517774acd81d8c3a329b", kill_on_drop: false }`
[INFO] [stdout] ef6ded18e20bb11fea973f12a5b7cb8b7abbb8ba9e26517774acd81d8c3a329b