[INFO] cloning repository https://github.com/Ysoding/monkey-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ysoding/monkey-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYsoding%2Fmonkey-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYsoding%2Fmonkey-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6ddd3de7e7667a2d1e2da910a44502e2612cac5
[INFO] checking Ysoding/monkey-rust against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYsoding%2Fmonkey-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ysoding/monkey-rust
[INFO] finished tweaking git repo https://github.com/Ysoding/monkey-rust
[INFO] tweaked toml for git repo https://github.com/Ysoding/monkey-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ysoding/monkey-rust on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Ysoding/monkey-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" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 262c11eb67a58a66cc3413775575c5c404a02e19d10696b094f4bdbb6fe6567e
[INFO] running `Command { std: "docker" "start" "-a" "262c11eb67a58a66cc3413775575c5c404a02e19d10696b094f4bdbb6fe6567e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "262c11eb67a58a66cc3413775575c5c404a02e19d10696b094f4bdbb6fe6567e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "262c11eb67a58a66cc3413775575c5c404a02e19d10696b094f4bdbb6fe6567e", kill_on_drop: false }`
[INFO] [stdout] 262c11eb67a58a66cc3413775575c5c404a02e19d10696b094f4bdbb6fe6567e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f482347db69e8dc98a78a398b2e3b18410e545e3aaa27443cf29bcf84744965a
[INFO] running `Command { std: "docker" "start" "-a" "f482347db69e8dc98a78a398b2e3b18410e545e3aaa27443cf29bcf84744965a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.156
[INFO] [stderr]     Checking monkey-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking users v0.11.0
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stdout] warning: unused import: `ExpressionStatement`
[INFO] [stdout]  --> interpreter/src/evaluator/mod.rs:7:63
[INFO] [stdout]   |
[INFO] [stdout] 7 |     ArrayLiteral, BlockStatement, CallExpression, Expression, ExpressionStatement, FunctionLiteral,
[INFO] [stdout]   |                                                               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExpressionStatement`
[INFO] [stdout]  --> interpreter/src/evaluator/mod.rs:7:63
[INFO] [stdout]   |
[INFO] [stdout] 7 |     ArrayLiteral, BlockStatement, CallExpression, Expression, ExpressionStatement, FunctionLiteral,
[INFO] [stdout]   |                                                               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ModifierFunc` is never used
[INFO] [stdout]    --> interpreter/src/evaluator/mod.rs:420:6
[INFO] [stdout]     |
[INFO] [stdout] 420 | type ModifierFunc = fn(Box<dyn Node>) -> Box<dyn 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: function `modify` is never used
[INFO] [stdout]    --> interpreter/src/evaluator/mod.rs:422:4
[INFO] [stdout]     |
[INFO] [stdout] 422 | fn modify(node: Box<dyn Node>, modifier: ModifierFunc) -> Box<dyn Node> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]   --> interpreter/src/evaluator/object.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout]  8 | #[derive(Debug, PartialEq, Clone)]
[INFO] [stdout]    |                 --------- in this derive macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 16 |     Builtin(String, usize, BuiltinFunction),
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the address of the same function can vary between different codegen units
[INFO] [stdout]    = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]    = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout]    = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> interpreter/src/parser/mod.rs:42:37
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(l: &'a mut Lexer) -> Parser {
[INFO] [stdout]    |                    --               ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(l: &'a mut Lexer) -> Parser<'a> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]    --> interpreter/src/evaluator/mod.rs:522:21
[INFO] [stdout]     |
[INFO] [stdout] 522 |         for (input, expected) in tests {
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `modified`
[INFO] [stdout]    --> interpreter/src/evaluator/mod.rs:523:17
[INFO] [stdout]     |
[INFO] [stdout] 523 |             let modified = modify(input, turn_one_into_two);
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_modified`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
[INFO] [stdout]   --> interpreter/src/evaluator/object.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout]  8 | #[derive(Debug, PartialEq, Clone)]
[INFO] [stdout]    |                 --------- in this derive macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 16 |     Builtin(String, usize, BuiltinFunction),
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the address of the same function can vary between different codegen units
[INFO] [stdout]    = note: furthermore, different functions could have the same address after being merged together
[INFO] [stdout]    = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
[INFO] [stdout]    = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> interpreter/src/parser/mod.rs:42:37
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(l: &'a mut Lexer) -> Parser {
[INFO] [stdout]    |                    --               ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is named here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(l: &'a mut Lexer) -> Parser<'a> {
[INFO] [stdout]    |                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "f482347db69e8dc98a78a398b2e3b18410e545e3aaa27443cf29bcf84744965a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f482347db69e8dc98a78a398b2e3b18410e545e3aaa27443cf29bcf84744965a", kill_on_drop: false }`
[INFO] [stdout] f482347db69e8dc98a78a398b2e3b18410e545e3aaa27443cf29bcf84744965a
