[INFO] cloning repository https://github.com/WardToulet/chain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WardToulet/chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWardToulet%2Fchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWardToulet%2Fchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01eb2f430f020d29f5696cbbdcd7a39f38a38ee3
[INFO] checking WardToulet/chain against master#00bfd6b2734d9c28a147bf237490995731781fdd for pr-117984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWardToulet%2Fchain" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WardToulet/chain on toolchain 00bfd6b2734d9c28a147bf237490995731781fdd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+00bfd6b2734d9c28a147bf237490995731781fdd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/WardToulet/chain
[INFO] finished tweaking git repo https://github.com/WardToulet/chain
[INFO] tweaked toml for git repo https://github.com/WardToulet/chain written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/WardToulet/chain 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" "+00bfd6b2734d9c28a147bf237490995731781fdd" "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 WardToulet/chain against try#aa7c6ba69acce8b10a275eabfe6157ea72c8b599 for pr-117984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWardToulet%2Fchain" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WardToulet/chain on toolchain aa7c6ba69acce8b10a275eabfe6157ea72c8b599
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/WardToulet/chain
[INFO] finished tweaking git repo https://github.com/WardToulet/chain
[INFO] tweaked toml for git repo https://github.com/WardToulet/chain written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/WardToulet/chain 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" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "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 WardToulet/chain against try#aa7c6ba69acce8b10a275eabfe6157ea72c8b599 for pr-117984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWardToulet%2Fchain" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WardToulet/chain on toolchain aa7c6ba69acce8b10a275eabfe6157ea72c8b599
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/WardToulet/chain
[INFO] finished tweaking git repo https://github.com/WardToulet/chain
[INFO] tweaked toml for git repo https://github.com/WardToulet/chain written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/WardToulet/chain 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" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e63d21ecafe229f31572ef84b9304f4df50f529db2e4195de6d97ab416de6db
[INFO] running `Command { std: "docker" "start" "-a" "2e63d21ecafe229f31572ef84b9304f4df50f529db2e4195de6d97ab416de6db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e63d21ecafe229f31572ef84b9304f4df50f529db2e4195de6d97ab416de6db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e63d21ecafe229f31572ef84b9304f4df50f529db2e4195de6d97ab416de6db", kill_on_drop: false }`
[INFO] [stdout] 2e63d21ecafe229f31572ef84b9304f4df50f529db2e4195de6d97ab416de6db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+aa7c6ba69acce8b10a275eabfe6157ea72c8b599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd8510b57e9d5165da93e782ef35e07c25bf19ff49c0b8c9e647fa437744b4ec
[INFO] running `Command { std: "docker" "start" "-a" "dd8510b57e9d5165da93e782ef35e07c25bf19ff49c0b8c9e647fa437744b4ec", kill_on_drop: false }`
[INFO] [stderr]     Checking chainc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `lex` is never used
[INFO] [stdout]  --> src/lexer/mod.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn lex(code: &str) -> Option<Vec<LexToken>> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/lexer/lex_token.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | pub enum LexToken {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 3  |     Arrow,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 4  |     Colon,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 5  |     SemiColon,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 6  |
[INFO] [stdout] 7  |     ParanthesisOpen,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 8  |     ParanthesisClose,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  |
[INFO] [stdout] 10 |     BracketOpen,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 11 |     BracketClose,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     BraceOpen,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 14 |     BraceClose,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 15 |
[INFO] [stdout] 16 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     Minus,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     Star,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 19 |     Slash,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 20 |     Percent,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 21 |
[INFO] [stdout] 22 |     PlusPlus,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 23 |     MinusMinus,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 24 |
[INFO] [stdout] 25 |     Equals,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 26 |     EqualsEquals,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 27 |
[INFO] [stdout] 28 |     PlusEquals,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 29 |     MinusEquals,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 30 |     StarEquals,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 31 |     SlashEquals,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 32 |     PercentEquals,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 33 |
[INFO] [stdout] 34 |     GreatherThen,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 35 |     GreatherThenOrEqual,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 36 |
[INFO] [stdout] 37 |     SmallerThen,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 38 |     SmallerThenOrEuqal,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 39 |
[INFO] [stdout] 40 |     I8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 41 |     I16,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 42 |     I32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 43 |     I64,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 44 |
[INFO] [stdout] 45 |     U8,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 46 |     U16,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 47 |     U32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 48 |     U64,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 49 |
[INFO] [stdout] 50 |     F32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 51 |     F64,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 52 |
[INFO] [stdout] 53 |     Boolean,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 54 |
[INFO] [stdout] 55 |     Character,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 56 |
[INFO] [stdout] 57 |     True,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 58 |     False,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 59 |
[INFO] [stdout] 60 |     Let,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 61 |     If,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 62 |     Else,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 63 |     For,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 64 |     Return,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 65 |
[INFO] [stdout] 66 |     Identifire(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LexToken` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "dd8510b57e9d5165da93e782ef35e07c25bf19ff49c0b8c9e647fa437744b4ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd8510b57e9d5165da93e782ef35e07c25bf19ff49c0b8c9e647fa437744b4ec", kill_on_drop: false }`
[INFO] [stdout] dd8510b57e9d5165da93e782ef35e07c25bf19ff49c0b8c9e647fa437744b4ec