[INFO] cloning repository https://github.com/userzeroex/grey-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/userzeroex/grey-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuserzeroex%2Fgrey-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuserzeroex%2Fgrey-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52bf2b81cf71942bc4bab82bfb2e4696ed69de4e
[INFO] checking userzeroex/grey-lang against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuserzeroex%2Fgrey-lang" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/userzeroex/grey-lang on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/userzeroex/grey-lang
[INFO] finished tweaking git repo https://github.com/userzeroex/grey-lang
[INFO] tweaked toml for git repo https://github.com/userzeroex/grey-lang written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/userzeroex/grey-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4ee72488aec1d74e33a09bcd0ae1fe8448aba9feb8e1d2017d5ba0551e9f3d7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f4ee72488aec1d74e33a09bcd0ae1fe8448aba9feb8e1d2017d5ba0551e9f3d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4ee72488aec1d74e33a09bcd0ae1fe8448aba9feb8e1d2017d5ba0551e9f3d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4ee72488aec1d74e33a09bcd0ae1fe8448aba9feb8e1d2017d5ba0551e9f3d7", kill_on_drop: false }`
[INFO] [stdout] f4ee72488aec1d74e33a09bcd0ae1fe8448aba9feb8e1d2017d5ba0551e9f3d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0ce55a7a9f11dcc610f029a88234dd104955262eb0bf8a78473f87c95f077128
[INFO] running `Command { std: "docker" "start" "-a" "0ce55a7a9f11dcc610f029a88234dd104955262eb0bf8a78473f87c95f077128", kill_on_drop: false }`
[INFO] [stderr]     Checking greyi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Dedentation`
[INFO] [stdout]  --> src/tokens.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Dedentation,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EndOfFile`
[INFO] [stdout]   --> src/tokens.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     EndOfFile,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EndOfLine`
[INFO] [stdout]   --> src/tokens.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     EndOfLine,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Identifier`
[INFO] [stdout]   --> src/tokens.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Identifier(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Indentation`
[INFO] [stdout]   --> src/tokens.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Indentation,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]   --> src/tokens.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     Integer(u64),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LeftParenthesis`
[INFO] [stdout]   --> src/tokens.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     LeftParenthesis,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Minus`
[INFO] [stdout]   --> src/tokens.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     Minus,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Plus`
[INFO] [stdout]   --> src/tokens.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RightParenthesis`
[INFO] [stdout]   --> src/tokens.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     RightParenthesis,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/tokens.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |     pub fn new(kind: TokenKind, position: (usize, usize)) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "0ce55a7a9f11dcc610f029a88234dd104955262eb0bf8a78473f87c95f077128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ce55a7a9f11dcc610f029a88234dd104955262eb0bf8a78473f87c95f077128", kill_on_drop: false }`
[INFO] [stdout] 0ce55a7a9f11dcc610f029a88234dd104955262eb0bf8a78473f87c95f077128