[INFO] updating cached repository https://github.com/riku179/monkey-lang-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 945dfca5369c8980a7b9af4b52e0f857976cbeea
[INFO] checking riku179/monkey-lang-rust against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Friku179%2Fmonkey-lang-rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/riku179/monkey-lang-rust on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/riku179/monkey-lang-rust
[INFO] finished tweaking git repo https://github.com/riku179/monkey-lang-rust
[INFO] tweaked toml for git repo https://github.com/riku179/monkey-lang-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/riku179/monkey-lang-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4492f23d050b8d6e110edf91d6d49fb755e36b0635709d0f11e860470ae7b9b2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4492f23d050b8d6e110edf91d6d49fb755e36b0635709d0f11e860470ae7b9b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4492f23d050b8d6e110edf91d6d49fb755e36b0635709d0f11e860470ae7b9b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4492f23d050b8d6e110edf91d6d49fb755e36b0635709d0f11e860470ae7b9b2", kill_on_drop: false }`
[INFO] [stdout] 4492f23d050b8d6e110edf91d6d49fb755e36b0635709d0f11e860470ae7b9b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcfd74c72a72220e19ab96620c89f4b7c2a0ea23d662fa6adceee4e5167aa154
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bcfd74c72a72220e19ab96620c89f4b7c2a0ea23d662fa6adceee4e5167aa154", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking monkey_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `test_eval`
[INFO] [stdout]  --> src/evaluator/test.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn test_eval(input: &str) -> EvalResult<Object> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_expr`
[INFO] [stdout]   --> src/parser/test_util.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn check_expr<T: Literable>(expr: &Expr, val: T) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_stmt`
[INFO] [stdout]   --> src/parser/test_util.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn check_stmt<T: Literable>(stmt: &Stmt, val: T) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_infix_expr`
[INFO] [stdout]   --> src/parser/test_util.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn check_infix_expr<T: Literable>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_infix_stmt`
[INFO] [stdout]   --> src/parser/test_util.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn check_infix_stmt<T: Literable>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_let_stmt`
[INFO] [stdout]   --> src/parser/test_util.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn check_let_stmt(stmt: &Stmt, expected_name: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ILLEGAL`
[INFO] [stdout]  --> src/token/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     ILLEGAL,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_let_stmt`
[INFO] [stdout]   --> src/parser/test_util.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn check_let_stmt(stmt: &Stmt, expected_name: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ILLEGAL`
[INFO] [stdout]  --> src/token/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     ILLEGAL,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `Command { std: "docker" "inspect" "bcfd74c72a72220e19ab96620c89f4b7c2a0ea23d662fa6adceee4e5167aa154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcfd74c72a72220e19ab96620c89f4b7c2a0ea23d662fa6adceee4e5167aa154", kill_on_drop: false }`
[INFO] [stdout] bcfd74c72a72220e19ab96620c89f4b7c2a0ea23d662fa6adceee4e5167aa154