[INFO] cloning repository https://github.com/kdnakt/rmonkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kdnakt/rmonkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdnakt%2Frmonkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdnakt%2Frmonkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8daf98e0ffd960a0c223d674a6402bfe74406f5
[INFO] checking kdnakt/rmonkey against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdnakt%2Frmonkey" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kdnakt/rmonkey
[INFO] finished tweaking git repo https://github.com/kdnakt/rmonkey
[INFO] tweaked toml for git repo https://github.com/kdnakt/rmonkey written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kdnakt/rmonkey on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kdnakt/rmonkey 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.30
[INFO] [stderr]   Downloaded whoami v1.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35746d7f0aac6d0a761ed580611b99c6e476a5080d6eacbcaf723265a9923a74
[INFO] running `Command { std: "docker" "start" "-a" "35746d7f0aac6d0a761ed580611b99c6e476a5080d6eacbcaf723265a9923a74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35746d7f0aac6d0a761ed580611b99c6e476a5080d6eacbcaf723265a9923a74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35746d7f0aac6d0a761ed580611b99c6e476a5080d6eacbcaf723265a9923a74", kill_on_drop: false }`
[INFO] [stdout] 35746d7f0aac6d0a761ed580611b99c6e476a5080d6eacbcaf723265a9923a74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d34e7daa97aa6fd8a3cf211b793e70d371496d8f227ddc9d6e89e58846a126f
[INFO] running `Command { std: "docker" "start" "-a" "3d34e7daa97aa6fd8a3cf211b793e70d371496d8f227ddc9d6e89e58846a126f", kill_on_drop: false }`
[INFO] [stderr]    Compiling whoami v1.1.5
[INFO] [stderr]     Checking rmonkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `parameters`
[INFO] [stdout]   --> src/object.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Function{parameters, body, ..} => {
[INFO] [stdout]    |                      ^^^^^^^^^^ help: try ignoring the field: `parameters: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]   --> src/object.rs:64:34
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Function{parameters, body, ..} => {
[INFO] [stdout]    |                                  ^^^^ help: try ignoring the field: `body: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/evaluator.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |             _ => None,
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/evaluator.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             ExpressionStatement{expression, ..} => eval_expression(expression, env),
[INFO] [stdout]    |             ----------------------------------- matches some of the same values
[INFO] [stdout] 20 |             BlockStatement{statements, ..} => eval_statements(statements, env),
[INFO] [stdout]    |             ------------------------------ matches some of the same values
[INFO] [stdout] 21 |             ReturnStatement{return_value, ..} => {
[INFO] [stdout]    |             --------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 25 |             LetStatement{value, name, ..} => {
[INFO] [stdout]    |             ----------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 39 |             _ => None,
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Node` is never used
[INFO] [stdout]  --> src/ast.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub trait Node {
[INFO] [stdout]   |           ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Expression` is never constructed
[INFO] [stdout]   --> src/ast.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub enum AstNode {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 18 |     Expression {
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PrefixParseFn` is never used
[INFO] [stdout]   --> src/parser.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 | enum PrefixParseFn {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parameters`
[INFO] [stdout]   --> src/object.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Function{parameters, body, ..} => {
[INFO] [stdout]    |                      ^^^^^^^^^^ help: try ignoring the field: `parameters: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]   --> src/object.rs:64:34
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Function{parameters, body, ..} => {
[INFO] [stdout]    |                                  ^^^^ help: try ignoring the field: `body: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/evaluator.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |             _ => None,
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/evaluator.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             ExpressionStatement{expression, ..} => eval_expression(expression, env),
[INFO] [stdout]    |             ----------------------------------- matches some of the same values
[INFO] [stdout] 20 |             BlockStatement{statements, ..} => eval_statements(statements, env),
[INFO] [stdout]    |             ------------------------------ matches some of the same values
[INFO] [stdout] 21 |             ReturnStatement{return_value, ..} => {
[INFO] [stdout]    |             --------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 25 |             LetStatement{value, name, ..} => {
[INFO] [stdout]    |             ----------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 39 |             _ => None,
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Expression` is never constructed
[INFO] [stdout]   --> src/ast.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub enum AstNode {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 18 |     Expression {
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PrefixParseFn` is never used
[INFO] [stdout]   --> src/parser.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 | enum PrefixParseFn {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "3d34e7daa97aa6fd8a3cf211b793e70d371496d8f227ddc9d6e89e58846a126f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d34e7daa97aa6fd8a3cf211b793e70d371496d8f227ddc9d6e89e58846a126f", kill_on_drop: false }`
[INFO] [stdout] 3d34e7daa97aa6fd8a3cf211b793e70d371496d8f227ddc9d6e89e58846a126f