[INFO] cloning repository https://github.com/keatinge/rust-to-mips-compiler [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keatinge/rust-to-mips-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeatinge%2Frust-to-mips-compiler", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeatinge%2Frust-to-mips-compiler'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 42e1328fb446ba0d7ed35d3b48b1355ba57d55e6 [INFO] checking keatinge/rust-to-mips-compiler against master#fb4bca04fa1bde2f7db1b31a59e066f7bebd7fc6 for pr-120361 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeatinge%2Frust-to-mips-compiler" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/keatinge/rust-to-mips-compiler on toolchain fb4bca04fa1bde2f7db1b31a59e066f7bebd7fc6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fb4bca04fa1bde2f7db1b31a59e066f7bebd7fc6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/keatinge/rust-to-mips-compiler [INFO] finished tweaking git repo https://github.com/keatinge/rust-to-mips-compiler [INFO] tweaked toml for git repo https://github.com/keatinge/rust-to-mips-compiler written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/keatinge/rust-to-mips-compiler 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" "+fb4bca04fa1bde2f7db1b31a59e066f7bebd7fc6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking keatinge/rust-to-mips-compiler against try#e35e259478581c01033b8da67214c0d376859a32 for pr-120361 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeatinge%2Frust-to-mips-compiler" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/keatinge/rust-to-mips-compiler on toolchain e35e259478581c01033b8da67214c0d376859a32 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e35e259478581c01033b8da67214c0d376859a32" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/keatinge/rust-to-mips-compiler [INFO] finished tweaking git repo https://github.com/keatinge/rust-to-mips-compiler [INFO] tweaked toml for git repo https://github.com/keatinge/rust-to-mips-compiler written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/keatinge/rust-to-mips-compiler 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" "+e35e259478581c01033b8da67214c0d376859a32" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+e35e259478581c01033b8da67214c0d376859a32" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dca81bafb993dc19dceee5a22cca1e99f26b3669ed5f7258abb0b687cef9c76a [INFO] running `Command { std: "docker" "start" "-a" "dca81bafb993dc19dceee5a22cca1e99f26b3669ed5f7258abb0b687cef9c76a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dca81bafb993dc19dceee5a22cca1e99f26b3669ed5f7258abb0b687cef9c76a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dca81bafb993dc19dceee5a22cca1e99f26b3669ed5f7258abb0b687cef9c76a", kill_on_drop: false }` [INFO] [stdout] dca81bafb993dc19dceee5a22cca1e99f26b3669ed5f7258abb0b687cef9c76a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+e35e259478581c01033b8da67214c0d376859a32" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 997f6afc6adeadc1125325ef2092807d1d0f1b33d3d2017371e385cf6b674f66 [INFO] running `Command { std: "docker" "start" "-a" "997f6afc6adeadc1125325ef2092807d1d0f1b33d3d2017371e385cf6b674f66", kill_on_drop: false }` [INFO] [stderr] Checking mipscompiler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lexer.rs:101:9 [INFO] [stdout] | [INFO] [stdout] 101 | (self.chars.get(self.index+1)) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 101 - (self.chars.get(self.index+1)) [INFO] [stdout] 101 + self.chars.get(self.index+1) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lexer.rs:101:9 [INFO] [stdout] | [INFO] [stdout] 101 | (self.chars.get(self.index+1)) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 101 - (self.chars.get(self.index+1)) [INFO] [stdout] 101 + self.chars.get(self.index+1) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `i32` should have an upper camel case name [INFO] [stdout] --> src/parser.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | i32 [INFO] [stdout] | ^^^ help: convert the identifier to upper camel case (notice the capitalization): `I32` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `I32_lit` should have an upper camel case name [INFO] [stdout] --> src/parser.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | I32_lit(i32) [INFO] [stdout] | ^^^^^^^ help: convert the identifier to upper camel case: `I32Lit` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::rc::Rc` [INFO] [stdout] --> src/mips.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::rc::Rc; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `i32` should have an upper camel case name [INFO] [stdout] --> src/parser.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | i32 [INFO] [stdout] | ^^^ help: convert the identifier to upper camel case (notice the capitalization): `I32` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_camel_case_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `I32_lit` should have an upper camel case name [INFO] [stdout] --> src/parser.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | I32_lit(i32) [INFO] [stdout] | ^^^^^^^ help: convert the identifier to upper camel case: `I32Lit` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::rc::Rc` [INFO] [stdout] --> src/mips.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::rc::Rc; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/parser.rs:179:34 [INFO] [stdout] | [INFO] [stdout] 179 | &lexer::Token::Ident(s) if next == Some(&lexer::Token::OpenParen) => { self.parse_fn_call() } [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: unused variable: `s` [INFO] [stdout] --> src/parser.rs:180:34 [INFO] [stdout] | [INFO] [stdout] 180 | &lexer::Token::Ident(s) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/parser.rs:290:38 [INFO] [stdout] | [INFO] [stdout] 290 | if let (&lexer::Token::Ident(s), Some(&lexer::Token::Equal)) = (self.current_tok(), self.peek()) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/parser.rs:179:34 [INFO] [stdout] | [INFO] [stdout] 179 | &lexer::Token::Ident(s) if next == Some(&lexer::Token::OpenParen) => { self.parse_fn_call() } [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: unused variable: `s` [INFO] [stdout] --> src/parser.rs:180:34 [INFO] [stdout] | [INFO] [stdout] 180 | &lexer::Token::Ident(s) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `is_identifier` is never used [INFO] [stdout] --> src/lexer.rs:180:8 [INFO] [stdout] | [INFO] [stdout] 180 | pub fn is_identifier(t: &Token) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `expect` and `force_eat_return_i32_lit` are never used [INFO] [stdout] --> src/parser.rs:132:8 [INFO] [stdout] | [INFO] [stdout] 99 | impl<'b, 'a> Parser<'b, 'a> { [INFO] [stdout] | --------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 132 | fn expect(&self, t: &lexer::Token) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 157 | fn force_eat_return_i32_lit(&mut self) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `BeqLit` is never constructed [INFO] [stdout] --> src/mips.rs:61:5 [INFO] [stdout] | [INFO] [stdout] 54 | enum Instruction<'a> { [INFO] [stdout] | ----------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 61 | BeqLit(Register, i32, &'a str), [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Instruction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/mips.rs:172:5 [INFO] [stdout] | [INFO] [stdout] 171 | struct MipsFunction<'a> { [INFO] [stdout] | ------------ field in this struct [INFO] [stdout] 172 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `MipsFunction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/parser.rs:290:38 [INFO] [stdout] | [INFO] [stdout] 290 | if let (&lexer::Token::Ident(s), Some(&lexer::Token::Equal)) = (self.current_tok(), self.peek()) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | output.write_all(mips_str.as_bytes()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 29 | let _ = output.write_all(mips_str.as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `DeclData` should have a snake case name [INFO] [stdout] --> src/mips.rs:403:53 [INFO] [stdout] | [INFO] [stdout] 403 | &parser::Statement::Declaration(ref DeclData) => { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `decl_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `is_identifier` is never used [INFO] [stdout] --> src/lexer.rs:180:8 [INFO] [stdout] | [INFO] [stdout] 180 | pub fn is_identifier(t: &Token) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `expect` and `force_eat_return_i32_lit` are never used [INFO] [stdout] --> src/parser.rs:132:8 [INFO] [stdout] | [INFO] [stdout] 99 | impl<'b, 'a> Parser<'b, 'a> { [INFO] [stdout] | --------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 132 | fn expect(&self, t: &lexer::Token) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 157 | fn force_eat_return_i32_lit(&mut self) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `BeqLit` is never constructed [INFO] [stdout] --> src/mips.rs:61:5 [INFO] [stdout] | [INFO] [stdout] 54 | enum Instruction<'a> { [INFO] [stdout] | ----------- variant in this enum [INFO] [stdout] ... [INFO] [stdout] 61 | BeqLit(Register, i32, &'a str), [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Instruction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `name` is never read [INFO] [stdout] --> src/mips.rs:172:5 [INFO] [stdout] | [INFO] [stdout] 171 | struct MipsFunction<'a> { [INFO] [stdout] | ------------ field in this struct [INFO] [stdout] 172 | name: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `MipsFunction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | output.write_all(mips_str.as_bytes()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 29 | let _ = output.write_all(mips_str.as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `DeclData` should have a snake case name [INFO] [stdout] --> src/mips.rs:403:53 [INFO] [stdout] | [INFO] [stdout] 403 | &parser::Statement::Declaration(ref DeclData) => { [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `decl_data` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.40s [INFO] running `Command { std: "docker" "inspect" "997f6afc6adeadc1125325ef2092807d1d0f1b33d3d2017371e385cf6b674f66", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "997f6afc6adeadc1125325ef2092807d1d0f1b33d3d2017371e385cf6b674f66", kill_on_drop: false }` [INFO] [stdout] 997f6afc6adeadc1125325ef2092807d1d0f1b33d3d2017371e385cf6b674f66