[INFO] cloning repository https://github.com/ryanhossain9797/rust_monkey_interpreter [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryanhossain9797/rust_monkey_interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanhossain9797%2Frust_monkey_interpreter", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanhossain9797%2Frust_monkey_interpreter'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2f078859495b42dd45d59a3a25e737d33b2fabef [INFO] checking ryanhossain9797/rust_monkey_interpreter against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanhossain9797%2Frust_monkey_interpreter" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ryanhossain9797/rust_monkey_interpreter on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ryanhossain9797/rust_monkey_interpreter [INFO] finished tweaking git repo https://github.com/ryanhossain9797/rust_monkey_interpreter [INFO] tweaked toml for git repo https://github.com/ryanhossain9797/rust_monkey_interpreter written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/ryanhossain9797/rust_monkey_interpreter already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d09815738c297b24471465543e886218b89907ec22d17e42c7dd6877be3808a0 [INFO] running `Command { std: "docker" "start" "-a" "d09815738c297b24471465543e886218b89907ec22d17e42c7dd6877be3808a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d09815738c297b24471465543e886218b89907ec22d17e42c7dd6877be3808a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d09815738c297b24471465543e886218b89907ec22d17e42c7dd6877be3808a0", kill_on_drop: false }` [INFO] [stdout] d09815738c297b24471465543e886218b89907ec22d17e42c7dd6877be3808a0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 81f1224009f9a801ca624d66f32fd59e1144303e31ed09ec59a5a6ea32fa5a69 [INFO] running `Command { std: "docker" "start" "-a" "81f1224009f9a801ca624d66f32fd59e1144303e31ed09ec59a5a6ea32fa5a69", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling libc v0.2.86 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking cache-padded v1.1.1 [INFO] [stderr] Checking futures-core v0.3.12 [INFO] [stderr] Checking parking v2.0.0 [INFO] [stderr] Checking futures-io v0.3.12 [INFO] [stderr] Checking waker-fn v1.1.0 [INFO] [stderr] Checking event-listener v2.5.1 [INFO] [stderr] Checking pin-project-lite v0.2.4 [INFO] [stderr] Checking fastrand v1.4.0 [INFO] [stderr] Checking once_cell v1.5.2 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking async-task v4.0.3 [INFO] [stderr] Checking vec-arena v1.0.0 [INFO] [stderr] Checking atomic-waker v1.0.0 [INFO] [stderr] Compiling anyhow v1.0.38 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking concurrent-queue v1.2.2 [INFO] [stderr] Checking async-mutex v1.4.0 [INFO] [stderr] Checking async-lock v2.3.0 [INFO] [stderr] Checking async-channel v1.5.1 [INFO] [stderr] Compiling crossbeam-utils v0.8.1 [INFO] [stderr] Compiling quote v1.0.8 [INFO] [stderr] Checking futures-lite v1.11.3 [INFO] [stderr] Checking nb-connect v1.0.2 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Compiling syn v1.0.60 [INFO] [stderr] Checking blocking v1.0.2 [INFO] [stderr] Checking async-executor v1.4.0 [INFO] [stderr] Compiling ctor v0.1.19 [INFO] [stderr] Compiling async-attributes v1.1.2 [INFO] [stderr] Checking value-bag v1.0.0-alpha.6 [INFO] [stderr] Checking log v0.4.14 [INFO] [stderr] Checking polling v2.0.2 [INFO] [stderr] Checking kv-log-macro v1.0.7 [INFO] [stderr] Checking async-io v1.3.1 [INFO] [stderr] Checking async-global-executor v2.0.2 [INFO] [stderr] Checking async-std v1.9.0 [INFO] [stderr] Checking monkey_compiler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `parser::*` [INFO] [stdout] --> src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use parser::*; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/parser.rs:150:12 [INFO] [stdout] | [INFO] [stdout] 150 | if (&let_statement.name.value != expected_identifier) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `parser::*` [INFO] [stdout] --> src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use parser::*; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/ast.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Parser` [INFO] [stdout] --> src/parser.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | pub struct Parser { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/parser.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | pub fn new(l: lexer::Lexer) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `next_token` [INFO] [stdout] --> src/parser.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 22 | fn next_token(&mut self) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `parse_program` [INFO] [stdout] --> src/parser.rs:27:12 [INFO] [stdout] | [INFO] [stdout] 27 | pub fn parse_program(&mut self) -> Program { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `parse_statement` [INFO] [stdout] --> src/parser.rs:42:12 [INFO] [stdout] | [INFO] [stdout] 42 | pub fn parse_statement(&mut self) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `parse_let_statement` [INFO] [stdout] --> src/parser.rs:58:12 [INFO] [stdout] | [INFO] [stdout] 58 | pub fn parse_let_statement(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cur_token_is` [INFO] [stdout] --> src/parser.rs:87:12 [INFO] [stdout] | [INFO] [stdout] 87 | pub fn cur_token_is(&self, token: Token) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `peek_token_is` [INFO] [stdout] --> src/parser.rs:95:12 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn peek_token_is(&self, token: Token) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `expect_peek` [INFO] [stdout] --> src/parser.rs:103:12 [INFO] [stdout] | [INFO] [stdout] 103 | pub fn expect_peek(&mut self, token: Token) -> bool { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/parser.rs:130:20 [INFO] [stdout] | [INFO] [stdout] 130 | panic!(program.statements.len()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 130 | panic!("{}", program.statements.len()); [INFO] [stdout] | ^^^^^ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 130 | std::panic::panic_any(program.statements.len()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 28.06s [INFO] running `Command { std: "docker" "inspect" "81f1224009f9a801ca624d66f32fd59e1144303e31ed09ec59a5a6ea32fa5a69", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "81f1224009f9a801ca624d66f32fd59e1144303e31ed09ec59a5a6ea32fa5a69", kill_on_drop: false }` [INFO] [stdout] 81f1224009f9a801ca624d66f32fd59e1144303e31ed09ec59a5a6ea32fa5a69