[INFO] cloning repository https://github.com/hatchan/interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hatchan/interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhatchan%2Finterpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhatchan%2Finterpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b27b2dd9174dbb06a4ba9be492ba788535bd471
[INFO] checking hatchan/interpreter against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhatchan%2Finterpreter" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hatchan/interpreter on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hatchan/interpreter
[INFO] finished tweaking git repo https://github.com/hatchan/interpreter
[INFO] tweaked toml for git repo https://github.com/hatchan/interpreter written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/hatchan/interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", 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] 5b6a534da9957f1ddfd023a57398bd88ebf4b0843f503588535bb5fc47ce2ad4
[INFO] running `Command { std: "docker" "start" "-a" "5b6a534da9957f1ddfd023a57398bd88ebf4b0843f503588535bb5fc47ce2ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b6a534da9957f1ddfd023a57398bd88ebf4b0843f503588535bb5fc47ce2ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b6a534da9957f1ddfd023a57398bd88ebf4b0843f503588535bb5fc47ce2ad4", kill_on_drop: false }`
[INFO] [stdout] 5b6a534da9957f1ddfd023a57398bd88ebf4b0843f503588535bb5fc47ce2ad4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] fffefebc6aa218907901977ec4085a53c9cc6b6e873bcd3888af45fe028fe560
[INFO] running `Command { std: "docker" "start" "-a" "fffefebc6aa218907901977ec4085a53c9cc6b6e873bcd3888af45fe028fe560", kill_on_drop: false }`
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lexer.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(input: &'a String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_token`
[INFO] [stdout]   --> src/lexer.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn next_token(&mut self) -> Token {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_char`
[INFO] [stdout]   --> src/lexer.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn read_char(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_char`
[INFO] [stdout]    --> src/lexer.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn peek_char(&self) -> Option<u8> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_number`
[INFO] [stdout]    --> src/lexer.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn read_number(&mut self) -> &[u8] {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_identifier`
[INFO] [stdout]    --> src/lexer.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn read_identifier(&mut self) -> &[u8] {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_whitespace`
[INFO] [stdout]    --> src/lexer.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn skip_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_digit`
[INFO] [stdout]    --> src/lexer.rs:133:4
[INFO] [stdout]     |
[INFO] [stdout] 133 | fn is_digit(ch: u8) -> bool {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_letter`
[INFO] [stdout]    --> src/lexer.rs:137:4
[INFO] [stdout]     |
[INFO] [stdout] 137 | fn is_letter(ch: u8) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_whitespace`
[INFO] [stdout]    --> src/lexer.rs:141:4
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn is_whitespace(ch: u8) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Token`
[INFO] [stdout]  --> src/token.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Token {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/token.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn new(token_type: TokenType) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Illegal`
[INFO] [stdout]   --> src/token.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Illegal,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EOF`
[INFO] [stdout]   --> src/token.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     EOF,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ident`
[INFO] [stdout]   --> src/token.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Ident(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Int`
[INFO] [stdout]   --> src/token.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Int(String),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Assign`
[INFO] [stdout]   --> src/token.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Assign,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Plus`
[INFO] [stdout]   --> src/token.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Minus`
[INFO] [stdout]   --> src/token.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Minus,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bang`
[INFO] [stdout]   --> src/token.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Bang,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Asterisk`
[INFO] [stdout]   --> src/token.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Asterisk,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Slash`
[INFO] [stdout]   --> src/token.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Slash,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LT`
[INFO] [stdout]   --> src/token.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     LT,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `GT`
[INFO] [stdout]   --> src/token.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     GT,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Equals`
[INFO] [stdout]   --> src/token.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Equals,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NotEquals`
[INFO] [stdout]   --> src/token.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     NotEquals,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Comma`
[INFO] [stdout]   --> src/token.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Comma,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SemiColon`
[INFO] [stdout]   --> src/token.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     SemiColon,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LParen`
[INFO] [stdout]   --> src/token.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     LParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RParen`
[INFO] [stdout]   --> src/token.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     RParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LBrace`
[INFO] [stdout]   --> src/token.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     LBrace,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RBrace`
[INFO] [stdout]   --> src/token.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     RBrace,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Function`
[INFO] [stdout]   --> src/token.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Function,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Let`
[INFO] [stdout]   --> src/token.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Let,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `True`
[INFO] [stdout]   --> src/token.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     True,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `False`
[INFO] [stdout]   --> src/token.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     False,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `If`
[INFO] [stdout]   --> src/token.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     If,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Else`
[INFO] [stdout]   --> src/token.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     Else,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Return`
[INFO] [stdout]   --> src/token.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     Return,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "fffefebc6aa218907901977ec4085a53c9cc6b6e873bcd3888af45fe028fe560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fffefebc6aa218907901977ec4085a53c9cc6b6e873bcd3888af45fe028fe560", kill_on_drop: false }`
[INFO] [stdout] fffefebc6aa218907901977ec4085a53c9cc6b6e873bcd3888af45fe028fe560