Dec 19 14:30:03.273 INFO checking keatinge/rust-to-mips-compiler against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 14:30:03.273 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/keatinge/rust-to-mips-compiler:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 14:30:03.901 INFO [stdout] 6db5c25f3c934eaf87dd0cc85b2e52c2eb89daa40bf5456dd5a0b2fb82aef077
Dec 19 14:30:03.904 INFO running `"docker" "start" "-a" "6db5c25f3c934eaf87dd0cc85b2e52c2eb89daa40bf5456dd5a0b2fb82aef077"`
Dec 19 14:30:05.680 INFO [stderr]     Checking mipscompiler v0.1.0 (/opt/crater/workdir)
Dec 19 14:30:06.007 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 19 14:30:06.007 INFO [stderr]  --> src/mips.rs:3:5
Dec 19 14:30:06.007 INFO [stderr]   |
Dec 19 14:30:06.007 INFO [stderr] 3 | use std::rc::Rc;
Dec 19 14:30:06.007 INFO [stderr]   |     ^^^^^^^^^^^
Dec 19 14:30:06.007 INFO [stderr]   |
Dec 19 14:30:06.007 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 14:30:06.007 INFO [stderr] 
Dec 19 14:30:06.124 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 19 14:30:06.124 INFO [stderr]  --> src/mips.rs:3:5
Dec 19 14:30:06.124 INFO [stderr]   |
Dec 19 14:30:06.124 INFO [stderr] 3 | use std::rc::Rc;
Dec 19 14:30:06.124 INFO [stderr]   |     ^^^^^^^^^^^
Dec 19 14:30:06.124 INFO [stderr]   |
Dec 19 14:30:06.124 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 14:30:06.125 INFO [stderr] 
Dec 19 14:30:06.279 INFO [stderr] warning: unused variable: `s`
Dec 19 14:30:06.279 INFO [stderr]    --> src/parser.rs:179:34
Dec 19 14:30:06.279 INFO [stderr]     |
Dec 19 14:30:06.279 INFO [stderr] 179 |             &lexer::Token::Ident(s) if next == Some(&lexer::Token::OpenParen) => { self.parse_fn_call() }
Dec 19 14:30:06.279 INFO [stderr]     |                                  ^ help: consider using `_s` instead
Dec 19 14:30:06.279 INFO [stderr]     |
Dec 19 14:30:06.279 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 14:30:06.279 INFO [stderr] 
Dec 19 14:30:06.279 INFO [stderr] warning: unused variable: `s`
Dec 19 14:30:06.279 INFO [stderr]    --> src/parser.rs:180:34
Dec 19 14:30:06.279 INFO [stderr]     |
Dec 19 14:30:06.279 INFO [stderr] 180 |             &lexer::Token::Ident(s) => {
Dec 19 14:30:06.279 INFO [stderr]     |                                  ^ help: consider using `_s` instead
Dec 19 14:30:06.279 INFO [stderr] 
Dec 19 14:30:06.279 INFO [stderr] warning: unused variable: `s`
Dec 19 14:30:06.279 INFO [stderr]    --> src/parser.rs:290:38
Dec 19 14:30:06.279 INFO [stderr]     |
Dec 19 14:30:06.279 INFO [stderr] 290 |         if let (&lexer::Token::Ident(s), Some(&lexer::Token::Equal)) = (self.current_tok(), self.peek()) {
Dec 19 14:30:06.279 INFO [stderr]     |                                      ^ help: consider using `_s` instead
Dec 19 14:30:06.279 INFO [stderr] 
Dec 19 14:30:06.436 INFO [stderr] warning: function is never used: `is_identifier`
Dec 19 14:30:06.436 INFO [stderr]    --> src/lexer.rs:180:1
Dec 19 14:30:06.436 INFO [stderr]     |
Dec 19 14:30:06.436 INFO [stderr] 180 | pub fn is_identifier(t: &Token) -> bool {
Dec 19 14:30:06.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.436 INFO [stderr]     |
Dec 19 14:30:06.436 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 14:30:06.436 INFO [stderr] 
Dec 19 14:30:06.436 INFO [stderr] warning: method is never used: `expect`
Dec 19 14:30:06.436 INFO [stderr]    --> src/parser.rs:132:5
Dec 19 14:30:06.436 INFO [stderr]     |
Dec 19 14:30:06.436 INFO [stderr] 132 |     fn expect(&self, t: &lexer::Token)  {
Dec 19 14:30:06.436 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.436 INFO [stderr] 
Dec 19 14:30:06.436 INFO [stderr] warning: method is never used: `force_eat_return_i32_lit`
Dec 19 14:30:06.436 INFO [stderr]    --> src/parser.rs:157:5
Dec 19 14:30:06.436 INFO [stderr]     |
Dec 19 14:30:06.436 INFO [stderr] 157 |     fn force_eat_return_i32_lit(&mut self) -> i32 {
Dec 19 14:30:06.436 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.436 INFO [stderr] 
Dec 19 14:30:06.436 INFO [stderr] warning: variant is never constructed: `BeqLit`
Dec 19 14:30:06.436 INFO [stderr]   --> src/mips.rs:61:5
Dec 19 14:30:06.436 INFO [stderr]    |
Dec 19 14:30:06.436 INFO [stderr] 61 |     BeqLit(Register, i32, &'a str),
Dec 19 14:30:06.436 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.436 INFO [stderr] 
Dec 19 14:30:06.436 INFO [stderr] warning: variant `i32` should have a camel case name such as `I32`
Dec 19 14:30:06.436 INFO [stderr]  --> src/parser.rs:6:5
Dec 19 14:30:06.436 INFO [stderr]   |
Dec 19 14:30:06.436 INFO [stderr] 6 |     i32
Dec 19 14:30:06.436 INFO [stderr]   |     ^^^
Dec 19 14:30:06.436 INFO [stderr]   |
Dec 19 14:30:06.436 INFO [stderr]   = note: #[warn(non_camel_case_types)] on by default
Dec 19 14:30:06.436 INFO [stderr] 
Dec 19 14:30:06.436 INFO [stderr] warning: variant `I32_lit` should have a camel case name such as `I32Lit`
Dec 19 14:30:06.436 INFO [stderr]   --> src/parser.rs:24:5
Dec 19 14:30:06.436 INFO [stderr]    |
Dec 19 14:30:06.436 INFO [stderr] 24 |     I32_lit(i32)
Dec 19 14:30:06.436 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 19 14:30:06.436 INFO [stderr] 
Dec 19 14:30:06.440 INFO [stderr] warning: variable `DeclData` should have a snake case name such as `decl_data`
Dec 19 14:30:06.440 INFO [stderr]    --> src/mips.rs:403:49
Dec 19 14:30:06.440 INFO [stderr]     |
Dec 19 14:30:06.440 INFO [stderr] 403 |                 &parser::Statement::Declaration(ref DeclData) => {
Dec 19 14:30:06.440 INFO [stderr]     |                                                 ^^^^^^^^^^^^
Dec 19 14:30:06.440 INFO [stderr]     |
Dec 19 14:30:06.440 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 19 14:30:06.440 INFO [stderr] 
Dec 19 14:30:06.440 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 14:30:06.440 INFO [stderr]   --> src/main.rs:29:5
Dec 19 14:30:06.440 INFO [stderr]    |
Dec 19 14:30:06.440 INFO [stderr] 29 |     output.write_all(mips_str.as_bytes());
Dec 19 14:30:06.440 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.440 INFO [stderr]    |
Dec 19 14:30:06.440 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 14:30:06.440 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 14:30:06.440 INFO [stderr] 
Dec 19 14:30:06.452 INFO [stderr] warning: unused variable: `s`
Dec 19 14:30:06.452 INFO [stderr]    --> src/parser.rs:179:34
Dec 19 14:30:06.452 INFO [stderr]     |
Dec 19 14:30:06.452 INFO [stderr] 179 |             &lexer::Token::Ident(s) if next == Some(&lexer::Token::OpenParen) => { self.parse_fn_call() }
Dec 19 14:30:06.452 INFO [stderr]     |                                  ^ help: consider using `_s` instead
Dec 19 14:30:06.452 INFO [stderr]     |
Dec 19 14:30:06.452 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 14:30:06.452 INFO [stderr] 
Dec 19 14:30:06.452 INFO [stderr] warning: unused variable: `s`
Dec 19 14:30:06.452 INFO [stderr]    --> src/parser.rs:180:34
Dec 19 14:30:06.452 INFO [stderr]     |
Dec 19 14:30:06.452 INFO [stderr] 180 |             &lexer::Token::Ident(s) => {
Dec 19 14:30:06.452 INFO [stderr]     |                                  ^ help: consider using `_s` instead
Dec 19 14:30:06.452 INFO [stderr] 
Dec 19 14:30:06.452 INFO [stderr] warning: unused variable: `s`
Dec 19 14:30:06.452 INFO [stderr]    --> src/parser.rs:290:38
Dec 19 14:30:06.452 INFO [stderr]     |
Dec 19 14:30:06.452 INFO [stderr] 290 |         if let (&lexer::Token::Ident(s), Some(&lexer::Token::Equal)) = (self.current_tok(), self.peek()) {
Dec 19 14:30:06.452 INFO [stderr]     |                                      ^ help: consider using `_s` instead
Dec 19 14:30:06.452 INFO [stderr] 
Dec 19 14:30:06.602 INFO [stderr] warning: function is never used: `is_identifier`
Dec 19 14:30:06.602 INFO [stderr]    --> src/lexer.rs:180:1
Dec 19 14:30:06.602 INFO [stderr]     |
Dec 19 14:30:06.602 INFO [stderr] 180 | pub fn is_identifier(t: &Token) -> bool {
Dec 19 14:30:06.602 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.602 INFO [stderr]     |
Dec 19 14:30:06.602 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 14:30:06.602 INFO [stderr] 
Dec 19 14:30:06.602 INFO [stderr] warning: method is never used: `expect`
Dec 19 14:30:06.602 INFO [stderr]    --> src/parser.rs:132:5
Dec 19 14:30:06.602 INFO [stderr]     |
Dec 19 14:30:06.602 INFO [stderr] 132 |     fn expect(&self, t: &lexer::Token)  {
Dec 19 14:30:06.602 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.602 INFO [stderr] 
Dec 19 14:30:06.602 INFO [stderr] warning: method is never used: `force_eat_return_i32_lit`
Dec 19 14:30:06.602 INFO [stderr]    --> src/parser.rs:157:5
Dec 19 14:30:06.602 INFO [stderr]     |
Dec 19 14:30:06.602 INFO [stderr] 157 |     fn force_eat_return_i32_lit(&mut self) -> i32 {
Dec 19 14:30:06.602 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.602 INFO [stderr] 
Dec 19 14:30:06.602 INFO [stderr] warning: variant is never constructed: `BeqLit`
Dec 19 14:30:06.602 INFO [stderr]   --> src/mips.rs:61:5
Dec 19 14:30:06.602 INFO [stderr]    |
Dec 19 14:30:06.602 INFO [stderr] 61 |     BeqLit(Register, i32, &'a str),
Dec 19 14:30:06.602 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.602 INFO [stderr] 
Dec 19 14:30:06.602 INFO [stderr] warning: variant `i32` should have a camel case name such as `I32`
Dec 19 14:30:06.602 INFO [stderr]  --> src/parser.rs:6:5
Dec 19 14:30:06.602 INFO [stderr]   |
Dec 19 14:30:06.602 INFO [stderr] 6 |     i32
Dec 19 14:30:06.602 INFO [stderr]   |     ^^^
Dec 19 14:30:06.602 INFO [stderr]   |
Dec 19 14:30:06.602 INFO [stderr]   = note: #[warn(non_camel_case_types)] on by default
Dec 19 14:30:06.602 INFO [stderr] 
Dec 19 14:30:06.602 INFO [stderr] warning: variant `I32_lit` should have a camel case name such as `I32Lit`
Dec 19 14:30:06.602 INFO [stderr]   --> src/parser.rs:24:5
Dec 19 14:30:06.602 INFO [stderr]    |
Dec 19 14:30:06.602 INFO [stderr] 24 |     I32_lit(i32)
Dec 19 14:30:06.602 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 19 14:30:06.602 INFO [stderr] 
Dec 19 14:30:06.602 INFO [stderr] warning: variable `DeclData` should have a snake case name such as `decl_data`
Dec 19 14:30:06.602 INFO [stderr]    --> src/mips.rs:403:49
Dec 19 14:30:06.602 INFO [stderr]     |
Dec 19 14:30:06.602 INFO [stderr] 403 |                 &parser::Statement::Declaration(ref DeclData) => {
Dec 19 14:30:06.602 INFO [stderr]     |                                                 ^^^^^^^^^^^^
Dec 19 14:30:06.602 INFO [stderr]     |
Dec 19 14:30:06.602 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 19 14:30:06.602 INFO [stderr] 
Dec 19 14:30:06.602 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 14:30:06.602 INFO [stderr]   --> src/main.rs:29:5
Dec 19 14:30:06.603 INFO [stderr]    |
Dec 19 14:30:06.603 INFO [stderr] 29 |     output.write_all(mips_str.as_bytes());
Dec 19 14:30:06.603 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:30:06.603 INFO [stderr]    |
Dec 19 14:30:06.603 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 14:30:06.603 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 14:30:06.603 INFO [stderr] 
Dec 19 14:30:06.644 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
Dec 19 14:30:07.326 INFO running `"docker" "inspect" "6db5c25f3c934eaf87dd0cc85b2e52c2eb89daa40bf5456dd5a0b2fb82aef077"`
Dec 19 14:30:07.632 INFO running `"docker" "rm" "-f" "6db5c25f3c934eaf87dd0cc85b2e52c2eb89daa40bf5456dd5a0b2fb82aef077"`
Dec 19 14:30:07.934 INFO [stdout] 6db5c25f3c934eaf87dd0cc85b2e52c2eb89daa40bf5456dd5a0b2fb82aef077