[INFO] cloning repository https://github.com/gengjiawen/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/gengjiawen/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgengjiawen%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgengjiawen%2Fmonkey_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f04fe61bed552c0700cc0efe367d98abf1fdebb
[INFO] checking gengjiawen/monkey_rust against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgengjiawen%2Fmonkey_rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gengjiawen/monkey_rust on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gengjiawen/monkey_rust
[INFO] finished tweaking git repo https://github.com/gengjiawen/monkey_rust
[INFO] tweaked toml for git repo https://github.com/gengjiawen/monkey_rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gengjiawen/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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-4-tc1/source/wasm/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.24
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.24
[INFO] [stderr]   Downloaded rustversion v1.0.8
[INFO] [stderr]   Downloaded insta v1.39.0
[INFO] [stderr]   Downloaded wee_alloc v0.4.5
[INFO] [stderr]   Downloaded similar v2.1.0
[INFO] [stderr]   Downloaded libc v0.2.80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da7ff314aaca16d427199353941224fd980f4402f29af7b3189a674e1bb43840
[INFO] running `Command { std: "docker" "start" "-a" "da7ff314aaca16d427199353941224fd980f4402f29af7b3189a674e1bb43840", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da7ff314aaca16d427199353941224fd980f4402f29af7b3189a674e1bb43840", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da7ff314aaca16d427199353941224fd980f4402f29af7b3189a674e1bb43840", kill_on_drop: false }`
[INFO] [stdout] da7ff314aaca16d427199353941224fd980f4402f29af7b3189a674e1bb43840
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc0af50f579c89177af083cd36ad5664604fc7394877c7eeadc81147c06b3f13
[INFO] running `Command { std: "docker" "start" "-a" "bc0af50f579c89177af083cd36ad5664604fc7394877c7eeadc81147c06b3f13", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/wasm/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.80
[INFO] [stderr]    Compiling rustversion v1.0.8
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.80
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking similar v2.1.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking console v0.15.5
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.24
[INFO] [stderr]     Checking insta v1.39.0
[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]    Compiling strum_macros v0.26.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.80
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.80
[INFO] [stderr]     Checking strum v0.25.0
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.80
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking js-sys v0.3.51
[INFO] [stderr]     Checking serde v1.0.203
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.24
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.24
[INFO] [stderr]     Checking serde_json v1.0.117
[INFO] [stderr]     Checking monkey-lexer v0.9.1 (/opt/rustwide/workdir/lexer)
[INFO] [stderr]     Checking monkey-parser v0.9.1 (/opt/rustwide/workdir/parser)
[INFO] [stdout] warning: value assigned to `identifier_name` is never read
[INFO] [stdout]    --> parser/lib.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let mut identifier_name = "".to_string();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `identifier_name` is never read
[INFO] [stdout]    --> parser/lib.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let mut identifier_name = "".to_string();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking monkey-object v0.9.1 (/opt/rustwide/workdir/object)
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> object/object.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::{Formatter, write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> object/object.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::{Formatter, write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking monkey-compiler v0.9.1 (/opt/rustwide/workdir/compiler)
[INFO] [stderr]     Checking monkey-interpreter v0.9.1 (/opt/rustwide/workdir/interpreter)
[INFO] [stdout] warning: unused import: `CompiledFunction`
[INFO] [stdout]  --> compiler/vm.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 | use object::{BuiltinFunc, Closure, CompiledFunction, Object};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write` and `self`
[INFO] [stdout]   --> compiler/vm_test.rs:1:15
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::io::{self, Write};
[INFO] [stdout]    |               ^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> compiler/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | mod vm_test;
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CompiledFunction`
[INFO] [stdout]  --> compiler/vm.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 | use object::{BuiltinFunc, Closure, CompiledFunction, Object};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write` and `self`
[INFO] [stdout]  --> compiler/vm_test.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ip` is never read
[INFO] [stdout]   --> compiler/vm.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut ip = 0;
[INFO] [stdout]    |                 ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> compiler/vm_test.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let s = bytecodes.instructions.string();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_constants` is never used
[INFO] [stdout]  --> compiler/compiler_test.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn test_constants(expected: &Vec<Object>, actual: &Vec<Rc<Object>>) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CompilerTestCase` is never constructed
[INFO] [stdout]   --> compiler/compiler_test.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct CompilerTestCase<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerTestCase` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_compiler_test` is never used
[INFO] [stdout]   --> compiler/compiler_test.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run_compiler_test(tests: Vec<CompilerTestCase>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_instructions` is never used
[INFO] [stdout]   --> compiler/compiler_test.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn test_instructions(expected: &Vec<Instructions>, actual: &Instructions) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VmTestCase` is never constructed
[INFO] [stdout]  --> compiler/vm_test.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct VmTestCase<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_vm_tests` is never used
[INFO] [stdout]   --> compiler/vm_test.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn run_vm_tests(tests: Vec<VmTestCase>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking monkey-wasm v0.9.1 (/opt/rustwide/workdir/wasm)
[INFO] [stdout] warning: value assigned to `ip` is never read
[INFO] [stdout]   --> compiler/vm.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut ip = 0;
[INFO] [stdout]    |                 ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> compiler/vm_test.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let s = bytecodes.instructions.string();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.69s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.80
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "bc0af50f579c89177af083cd36ad5664604fc7394877c7eeadc81147c06b3f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc0af50f579c89177af083cd36ad5664604fc7394877c7eeadc81147c06b3f13", kill_on_drop: false }`
[INFO] [stdout] bc0af50f579c89177af083cd36ad5664604fc7394877c7eeadc81147c06b3f13