[INFO] cloning repository https://github.com/pix-lang/pix
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pix-lang/pix" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpix-lang%2Fpix", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpix-lang%2Fpix'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18a24709e09341c9dcdecb63d28e1b0e97c0e5e8
[INFO] checking pix-lang/pix against try#0f31acebf540c89e4a4d5d114959fe91973419cb for pr-147017
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpix-lang%2Fpix" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pix-lang/pix
[INFO] finished tweaking git repo https://github.com/pix-lang/pix
[INFO] tweaked toml for git repo https://github.com/pix-lang/pix written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pix-lang/pix on toolchain 0f31acebf540c89e4a4d5d114959fe91973419cb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pix-lang/pix 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" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "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 pix-lang/pix against try#0f31acebf540c89e4a4d5d114959fe91973419cb for pr-147017
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpix-lang%2Fpix" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pix-lang/pix
[INFO] finished tweaking git repo https://github.com/pix-lang/pix
[INFO] tweaked toml for git repo https://github.com/pix-lang/pix written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pix-lang/pix on toolchain 0f31acebf540c89e4a4d5d114959fe91973419cb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pix-lang/pix 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" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28f6ebf490453b12c4118d2befb1e365116db430f76acbb83e925f24350ae3e5
[INFO] running `Command { std: "docker" "start" "-a" "28f6ebf490453b12c4118d2befb1e365116db430f76acbb83e925f24350ae3e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28f6ebf490453b12c4118d2befb1e365116db430f76acbb83e925f24350ae3e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f6ebf490453b12c4118d2befb1e365116db430f76acbb83e925f24350ae3e5", kill_on_drop: false }`
[INFO] [stdout] 28f6ebf490453b12c4118d2befb1e365116db430f76acbb83e925f24350ae3e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc9bb5f611d97ab5427b3b4aa69d8194ad3114244bd60d4905a80006eaafaffb
[INFO] running `Command { std: "docker" "start" "-a" "fc9bb5f611d97ab5427b3b4aa69d8194ad3114244bd60d4905a80006eaafaffb", kill_on_drop: false }`
[INFO] [stderr]     Checking pix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `token_type`, `lexem`, `literal`, and `line` are never read
[INFO] [stdout]   --> src/parser/tokens.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct Token {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 49 |     token_type: TokenType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 50 |     lexem: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 51 |     literal: LiteralType,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 52 |     line: u32
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token_type`, `lexem`, `literal`, and `line` are never read
[INFO] [stdout]   --> src/parser/tokens.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct Token {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 49 |     token_type: TokenType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 50 |     lexem: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 51 |     literal: LiteralType,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 52 |     line: u32
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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" "fc9bb5f611d97ab5427b3b4aa69d8194ad3114244bd60d4905a80006eaafaffb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc9bb5f611d97ab5427b3b4aa69d8194ad3114244bd60d4905a80006eaafaffb", kill_on_drop: false }`
[INFO] [stdout] fc9bb5f611d97ab5427b3b4aa69d8194ad3114244bd60d4905a80006eaafaffb