[INFO] cloning repository https://github.com/BeckaL/rust-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BeckaL/rust-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeckaL%2Frust-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeckaL%2Frust-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf533aadbb8c062f6cb06b85749fca896b7926dc
[INFO] checking BeckaL/rust-interpreter against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeckaL%2Frust-interpreter" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BeckaL/rust-interpreter on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BeckaL/rust-interpreter
[INFO] finished tweaking git repo https://github.com/BeckaL/rust-interpreter
[INFO] tweaked toml for git repo https://github.com/BeckaL/rust-interpreter written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BeckaL/rust-interpreter 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5bbc6fcc4d41250be8484f6ef67edbef518aa978e40d4c3f0f9fd0c4ea4230e
[INFO] running `Command { std: "docker" "start" "-a" "f5bbc6fcc4d41250be8484f6ef67edbef518aa978e40d4c3f0f9fd0c4ea4230e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5bbc6fcc4d41250be8484f6ef67edbef518aa978e40d4c3f0f9fd0c4ea4230e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5bbc6fcc4d41250be8484f6ef67edbef518aa978e40d4c3f0f9fd0c4ea4230e", kill_on_drop: false }`
[INFO] [stdout] f5bbc6fcc4d41250be8484f6ef67edbef518aa978e40d4c3f0f9fd0c4ea4230e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9525186a8f8c2f2828702f78d302cb9d7df1cc33a763f2f0a16f2bc851dea21
[INFO] running `Command { std: "docker" "start" "-a" "c9525186a8f8c2f2828702f78d302cb9d7df1cc33a763f2f0a16f2bc851dea21", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking rust_interpreter 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  |     Int { value: i32 },
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 6  |     OpenBracket,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 7  |     CloseBracket,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 8  |     Multiplication,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     Division,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 10 |     Addition,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 11 |     Subtraction,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 12 |     UnknownToken,
[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: function `is_int` is never used
[INFO] [stdout]   --> src/lexer.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn is_int(str: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_int` is never used
[INFO] [stdout]   --> src/lexer.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn to_int(known_int_str: &str) -> Token {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex` is never used
[INFO] [stdout]   --> src/lexer.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn lex(str: &str) -> Vec<Token> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `Command { std: "docker" "inspect" "c9525186a8f8c2f2828702f78d302cb9d7df1cc33a763f2f0a16f2bc851dea21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9525186a8f8c2f2828702f78d302cb9d7df1cc33a763f2f0a16f2bc851dea21", kill_on_drop: false }`
[INFO] [stdout] c9525186a8f8c2f2828702f78d302cb9d7df1cc33a763f2f0a16f2bc851dea21