[INFO] cloning repository https://github.com/shreyashsaitwal/fox-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shreyashsaitwal/fox-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshreyashsaitwal%2Ffox-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshreyashsaitwal%2Ffox-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db862a7bcc3b3078f288dec39a5b5e42e2967d99
[INFO] checking shreyashsaitwal/fox-lang against try#e90f1ff63e694965281f833819a486da29772bdf for pr-146167
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshreyashsaitwal%2Ffox-lang" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/shreyashsaitwal/fox-lang
[INFO] finished tweaking git repo https://github.com/shreyashsaitwal/fox-lang
[INFO] tweaked toml for git repo https://github.com/shreyashsaitwal/fox-lang written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shreyashsaitwal/fox-lang on toolchain e90f1ff63e694965281f833819a486da29772bdf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shreyashsaitwal/fox-lang 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" "+e90f1ff63e694965281f833819a486da29772bdf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/zkat/miette`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking shreyashsaitwal/fox-lang against try#e90f1ff63e694965281f833819a486da29772bdf for pr-146167
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshreyashsaitwal%2Ffox-lang" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/shreyashsaitwal/fox-lang
[INFO] finished tweaking git repo https://github.com/shreyashsaitwal/fox-lang
[INFO] tweaked toml for git repo https://github.com/shreyashsaitwal/fox-lang written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shreyashsaitwal/fox-lang on toolchain e90f1ff63e694965281f833819a486da29772bdf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shreyashsaitwal/fox-lang 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" "+e90f1ff63e694965281f833819a486da29772bdf" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded supports-unicode v2.0.0
[INFO] [stderr]   Downloaded textwrap v0.15.2
[INFO] [stderr]   Downloaded supports-color v2.1.0
[INFO] [stderr]   Downloaded is_ci v1.1.1
[INFO] [stderr]   Downloaded supports-hyperlinks v2.1.0
[INFO] [stderr]   Downloaded rustix v0.38.22
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ac7a2236bd869a6483d4b18fed191a7816fc9c24ecb9473bf75ce3de34480e9
[INFO] running `Command { std: "docker" "start" "-a" "5ac7a2236bd869a6483d4b18fed191a7816fc9c24ecb9473bf75ce3de34480e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ac7a2236bd869a6483d4b18fed191a7816fc9c24ecb9473bf75ce3de34480e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ac7a2236bd869a6483d4b18fed191a7816fc9c24ecb9473bf75ce3de34480e9", kill_on_drop: false }`
[INFO] [stdout] 5ac7a2236bd869a6483d4b18fed191a7816fc9c24ecb9473bf75ce3de34480e9
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+e90f1ff63e694965281f833819a486da29772bdf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2db84a0b6702a258db98d4c4f2690533f12ec5757a3946701810e3037878f07
[INFO] running `Command { std: "docker" "start" "-a" "b2db84a0b6702a258db98d4c4f2690533f12ec5757a3946701810e3037878f07", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.22
[INFO] [stderr]     Checking linux-raw-sys v0.4.11
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking is_ci v1.1.1
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]    Compiling miette-derive v5.10.0 (https://github.com/zkat/miette?rev=c7ba5b7e52e05991cecd3ca925c710bbe49850b9#c7ba5b7e)
[INFO] [stderr]     Checking textwrap v0.15.2
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking supports-color v2.1.0
[INFO] [stderr]     Checking supports-unicode v2.0.0
[INFO] [stderr]     Checking supports-hyperlinks v2.1.0
[INFO] [stderr]     Checking miette v5.10.0 (https://github.com/zkat/miette?rev=c7ba5b7e52e05991cecd3ca925c710bbe49850b9#c7ba5b7e)
[INFO] [stderr]     Checking fox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `position` is never read
[INFO] [stdout]   --> src/lexer.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 12 |     pub ty: TokenType,
[INFO] [stdout] 13 |     pub position: Position,
[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: method `lexeme` is never used
[INFO] [stdout]   --> src/lexer.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Token {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 17 |     pub fn lexeme(&self) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line`, `start`, and `end` are never read
[INFO] [stdout]   --> src/lexer.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct Position {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 50 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 51 |     pub start: usize,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 52 |     pub end: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Position` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `lexeme` is never used
[INFO] [stdout]    --> src/lexer.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | impl Keyword {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 108 |     fn lexeme(&self) -> &str {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expr` is never used
[INFO] [stdout]  --> src/expr.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Expr {
[INFO] [stdout]   |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BinaryExpr` is never constructed
[INFO] [stdout]   --> src/expr.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct BinaryExpr {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GroupingExpr` is never constructed
[INFO] [stdout]   --> src/expr.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct GroupingExpr {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnaryExpr` is never constructed
[INFO] [stdout]   --> src/expr.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct UnaryExpr {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Literal` is never used
[INFO] [stdout]   --> src/expr.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum Literal {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `position` is never read
[INFO] [stdout]   --> src/lexer.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 12 |     pub ty: TokenType,
[INFO] [stdout] 13 |     pub position: Position,
[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 `line`, `start`, and `end` are never read
[INFO] [stdout]   --> src/lexer.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct Position {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 50 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 51 |     pub start: usize,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 52 |     pub end: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Position` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `String` is never constructed
[INFO] [stdout]   --> src/expr.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum Literal {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] 28 |     String(Option<String>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "b2db84a0b6702a258db98d4c4f2690533f12ec5757a3946701810e3037878f07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2db84a0b6702a258db98d4c4f2690533f12ec5757a3946701810e3037878f07", kill_on_drop: false }`
[INFO] [stdout] b2db84a0b6702a258db98d4c4f2690533f12ec5757a3946701810e3037878f07