[INFO] cloning repository https://github.com/JamieBShaw/interpreter_in_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JamieBShaw/interpreter_in_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieBShaw%2Finterpreter_in_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieBShaw%2Finterpreter_in_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3773a30577e22d5f5800d4df1aa83a713470edda
[INFO] checking JamieBShaw/interpreter_in_rust against master#7606c13961ddc1174b70638e934df0439b7dc515 for pr-121979
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieBShaw%2Finterpreter_in_rust" "/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/JamieBShaw/interpreter_in_rust on toolchain 7606c13961ddc1174b70638e934df0439b7dc515
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7606c13961ddc1174b70638e934df0439b7dc515" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JamieBShaw/interpreter_in_rust
[INFO] finished tweaking git repo https://github.com/JamieBShaw/interpreter_in_rust
[INFO] tweaked toml for git repo https://github.com/JamieBShaw/interpreter_in_rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JamieBShaw/interpreter_in_rust 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" "+7606c13961ddc1174b70638e934df0439b7dc515" "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 JamieBShaw/interpreter_in_rust against try#ae973628c64ab60398819bcc1fd9f08ae68ad5b5 for pr-121979
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieBShaw%2Finterpreter_in_rust" "/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/JamieBShaw/interpreter_in_rust on toolchain ae973628c64ab60398819bcc1fd9f08ae68ad5b5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JamieBShaw/interpreter_in_rust
[INFO] finished tweaking git repo https://github.com/JamieBShaw/interpreter_in_rust
[INFO] tweaked toml for git repo https://github.com/JamieBShaw/interpreter_in_rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JamieBShaw/interpreter_in_rust 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" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "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 JamieBShaw/interpreter_in_rust against try#ae973628c64ab60398819bcc1fd9f08ae68ad5b5 for pr-121979
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieBShaw%2Finterpreter_in_rust" "/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/JamieBShaw/interpreter_in_rust on toolchain ae973628c64ab60398819bcc1fd9f08ae68ad5b5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JamieBShaw/interpreter_in_rust
[INFO] finished tweaking git repo https://github.com/JamieBShaw/interpreter_in_rust
[INFO] tweaked toml for git repo https://github.com/JamieBShaw/interpreter_in_rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JamieBShaw/interpreter_in_rust 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" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8ef126ee3d166b30378740bc4b763d4237f0b6957eac9ccc667b8e4c68efaa3
[INFO] running `Command { std: "docker" "start" "-a" "e8ef126ee3d166b30378740bc4b763d4237f0b6957eac9ccc667b8e4c68efaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8ef126ee3d166b30378740bc4b763d4237f0b6957eac9ccc667b8e4c68efaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8ef126ee3d166b30378740bc4b763d4237f0b6957eac9ccc667b8e4c68efaa3", kill_on_drop: false }`
[INFO] [stdout] e8ef126ee3d166b30378740bc4b763d4237f0b6957eac9ccc667b8e4c68efaa3
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d40956616a89b57479dae1672bea458d71ea36d9495722c6bc53bd604920e4e
[INFO] running `Command { std: "docker" "start" "-a" "2d40956616a89b57479dae1672bea458d71ea36d9495722c6bc53bd604920e4e", kill_on_drop: false }`
[INFO] [stderr]     Checking interpreter_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/lexer.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub enum Token {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 5  |     ILLEGAL,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 6  |     EOF,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 7  |     // Identifiers + literals
[INFO] [stdout] 8  |     IDENT(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 9  |     INT(String),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 10 |     ASSIGN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 11 |     PLUS,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     MINUS,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     BANG,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     ASTERISK,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 15 |     SLASH,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 16 |     LT,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 17 |     GT,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 18 |     EQUAL,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 19 |     NOTEQUAL,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 20 |     // Delimiters
[INFO] [stdout] 21 |     COMMA,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     SEMICOLON,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 23 |     LPAREN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 24 |     RPAREN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 25 |     LBRACE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 26 |     RBRACE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 27 |     // Keywords
[INFO] [stdout] 28 |     FUNCTION,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 29 |     LET,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 30 |     TRUE,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 31 |     FALSE,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 32 |     IF,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 33 |     ELSE,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 34 |     RETURN,
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input`, `pos`, `read_pos`, and `ch` are never read
[INFO] [stdout]   --> src/lexer.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Lexer {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 73 |     input: Vec<u8>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 74 |     pos: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 75 |     read_pos: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 76 |     ch: u8,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Lexer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/lexer.rs:80:8
[INFO] [stdout]     |
[INFO] [stdout] 79  | impl Lexer {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] 80  |     fn new(input: String) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 92  |     fn read_char(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     fn next_token(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 156 |     fn peek_char(&self) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 164 |     fn read_ident(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 172 |     fn read_int(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn skip_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ILLEGAL` is never constructed
[INFO] [stdout]  --> src/lexer.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Token {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 5 |     ILLEGAL,
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "2d40956616a89b57479dae1672bea458d71ea36d9495722c6bc53bd604920e4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d40956616a89b57479dae1672bea458d71ea36d9495722c6bc53bd604920e4e", kill_on_drop: false }`
[INFO] [stdout] 2d40956616a89b57479dae1672bea458d71ea36d9495722c6bc53bd604920e4e