[INFO] cloning repository https://github.com/itsrainingmani/monkeylang [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/itsrainingmani/monkeylang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsrainingmani%2Fmonkeylang", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsrainingmani%2Fmonkeylang'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4ab39e047dfbc9b06bf585ce42dba89d94d1405f [INFO] checking itsrainingmani/monkeylang against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsrainingmani%2Fmonkeylang" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/itsrainingmani/monkeylang [INFO] finished tweaking git repo https://github.com/itsrainingmani/monkeylang [INFO] tweaked toml for git repo https://github.com/itsrainingmani/monkeylang written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/itsrainingmani/monkeylang on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/itsrainingmani/monkeylang 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2ed2f50bdae266931d521b782530e4dbdb05abdfc583f6254b9a61683ac8ad06 [INFO] running `Command { std: "docker" "start" "-a" "2ed2f50bdae266931d521b782530e4dbdb05abdfc583f6254b9a61683ac8ad06", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2ed2f50bdae266931d521b782530e4dbdb05abdfc583f6254b9a61683ac8ad06", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2ed2f50bdae266931d521b782530e4dbdb05abdfc583f6254b9a61683ac8ad06", kill_on_drop: false }` [INFO] [stdout] 2ed2f50bdae266931d521b782530e4dbdb05abdfc583f6254b9a61683ac8ad06 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 883e7e376c1ebcc141974f4614dd68935911e5b1d2259ebce92084091b6d6fa7 [INFO] running `Command { std: "docker" "start" "-a" "883e7e376c1ebcc141974f4614dd68935911e5b1d2259ebce92084091b6d6fa7", kill_on_drop: false }` [INFO] [stderr] Checking monkey v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `ast::*` [INFO] [stdout] --> src/lib.rs:346:17 [INFO] [stdout] | [INFO] [stdout] 346 | use super::{ast::*, lexer::*, token::*}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/lib.rs:287:13 [INFO] [stdout] | [INFO] [stdout] 265 | / loop { [INFO] [stdout] 266 | | let mut input = String::new(); [INFO] [stdout] 267 | | let mut lexer = Lexer::new(String::from("something")); [INFO] [stdout] 268 | | print!("{} ", self.prompt); [INFO] [stdout] ... | [INFO] [stdout] 286 | | } [INFO] [stdout] | |_____________- any code following this expression is unreachable [INFO] [stdout] 287 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `value` are never read [INFO] [stdout] --> src/lib.rs:304:9 [INFO] [stdout] | [INFO] [stdout] 302 | pub struct LetStmt<'a> { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 303 | token: Token, // the Token::LET token [INFO] [stdout] 304 | name: &'a Identifier, // holds the identifier of the binding [INFO] [stdout] | ^^^^ [INFO] [stdout] 305 | value: dyn Expression, // the expression that produces a value [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `value` is never read [INFO] [stdout] --> src/lib.rs:318:9 [INFO] [stdout] | [INFO] [stdout] 316 | pub struct Identifier { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 317 | token: Token, [INFO] [stdout] 318 | value: String, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `lexer`, `cur_token`, and `peek_token` are never read [INFO] [stdout] --> src/lib.rs:349:9 [INFO] [stdout] | [INFO] [stdout] 348 | pub struct Parser<'a> { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 349 | lexer: &'a mut Lexer, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 350 | [INFO] [stdout] 351 | cur_token: Token, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 352 | peek_token: Token, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `next_token`, and `parse_program` are never used [INFO] [stdout] --> src/lib.rs:356:12 [INFO] [stdout] | [INFO] [stdout] 355 | impl<'a> Parser<'a> { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 356 | fn new(lexer: &mut Lexer) -> Parser { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 366 | fn next_token(&mut self) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 371 | fn parse_program() {} [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/lib.rs:356:23 [INFO] [stdout] | [INFO] [stdout] 356 | fn new(lexer: &mut Lexer) -> Parser { [INFO] [stdout] | ^^^^^^^^^^ ------ the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 356 | fn new(lexer: &mut Lexer) -> Parser<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ast::*` [INFO] [stdout] --> src/lib.rs:346:17 [INFO] [stdout] | [INFO] [stdout] 346 | use super::{ast::*, lexer::*, token::*}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/lib.rs:287:13 [INFO] [stdout] | [INFO] [stdout] 265 | / loop { [INFO] [stdout] 266 | | let mut input = String::new(); [INFO] [stdout] 267 | | let mut lexer = Lexer::new(String::from("something")); [INFO] [stdout] 268 | | print!("{} ", self.prompt); [INFO] [stdout] ... | [INFO] [stdout] 286 | | } [INFO] [stdout] | |_____________- any code following this expression is unreachable [INFO] [stdout] 287 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `name` and `value` are never read [INFO] [stdout] --> src/lib.rs:304:9 [INFO] [stdout] | [INFO] [stdout] 302 | pub struct LetStmt<'a> { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 303 | token: Token, // the Token::LET token [INFO] [stdout] 304 | name: &'a Identifier, // holds the identifier of the binding [INFO] [stdout] | ^^^^ [INFO] [stdout] 305 | value: dyn Expression, // the expression that produces a value [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `value` is never read [INFO] [stdout] --> src/lib.rs:318:9 [INFO] [stdout] | [INFO] [stdout] 316 | pub struct Identifier { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 317 | token: Token, [INFO] [stdout] 318 | value: String, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `lexer`, `cur_token`, and `peek_token` are never read [INFO] [stdout] --> src/lib.rs:349:9 [INFO] [stdout] | [INFO] [stdout] 348 | pub struct Parser<'a> { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 349 | lexer: &'a mut Lexer, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 350 | [INFO] [stdout] 351 | cur_token: Token, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 352 | peek_token: Token, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `next_token`, and `parse_program` are never used [INFO] [stdout] --> src/lib.rs:356:12 [INFO] [stdout] | [INFO] [stdout] 355 | impl<'a> Parser<'a> { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 356 | fn new(lexer: &mut Lexer) -> Parser { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 366 | fn next_token(&mut self) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 371 | fn parse_program() {} [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/lib.rs:356:23 [INFO] [stdout] | [INFO] [stdout] 356 | fn new(lexer: &mut Lexer) -> Parser { [INFO] [stdout] | ^^^^^^^^^^ ------ the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 356 | fn new(lexer: &mut Lexer) -> Parser<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> tests/lexer_test.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | let mut lex = Lexer::new(String::from("hello \n\r\t world")); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s [INFO] running `Command { std: "docker" "inspect" "883e7e376c1ebcc141974f4614dd68935911e5b1d2259ebce92084091b6d6fa7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "883e7e376c1ebcc141974f4614dd68935911e5b1d2259ebce92084091b6d6fa7", kill_on_drop: false }` [INFO] [stdout] 883e7e376c1ebcc141974f4614dd68935911e5b1d2259ebce92084091b6d6fa7