[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] testing keatinge/rust-to-mips-compiler against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeatinge%2Frust-to-mips-compiler" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/keatinge/rust-to-mips-compiler on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-3/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: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcf2fe51b5cfa4ad48316e295e6f1b0a211cc8d2f38be49b55b546f4dce27e83
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bcf2fe51b5cfa4ad48316e295e6f1b0a211cc8d2f38be49b55b546f4dce27e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcf2fe51b5cfa4ad48316e295e6f1b0a211cc8d2f38be49b55b546f4dce27e83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcf2fe51b5cfa4ad48316e295e6f1b0a211cc8d2f38be49b55b546f4dce27e83", kill_on_drop: false }`
[INFO] [stdout] bcf2fe51b5cfa4ad48316e295e6f1b0a211cc8d2f38be49b55b546f4dce27e83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d7f28d645d612101286543a1111c224c5f225a31938d5389b4a81b2c97fb69a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1d7f28d645d612101286543a1111c224c5f225a31938d5389b4a81b2c97fb69a", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` 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: function is never used: `is_identifier`
[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: associated function is never used: `expect`
[INFO] [stdout]    --> src/parser.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn expect(&self, t: &lexer::Token)  {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `force_eat_return_i32_lit`
[INFO] [stdout]    --> src/parser.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn force_eat_return_i32_lit(&mut self) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BeqLit`
[INFO] [stdout]   --> src/mips.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     BeqLit(Register, i32, &'a str),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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 2.00s
[INFO] running `Command { std: "docker" "inspect" "1d7f28d645d612101286543a1111c224c5f225a31938d5389b4a81b2c97fb69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d7f28d645d612101286543a1111c224c5f225a31938d5389b4a81b2c97fb69a", kill_on_drop: false }`
[INFO] [stdout] 1d7f28d645d612101286543a1111c224c5f225a31938d5389b4a81b2c97fb69a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c498b315178192447c7e57d800f9b9abe7a30ae5a4e4f40c7cadc16ef70ef43d
[INFO] running `Command { std: "docker" "start" "-a" "c498b315178192447c7e57d800f9b9abe7a30ae5a4e4f40c7cadc16ef70ef43d", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` 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: function is never used: `is_identifier`
[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: associated function is never used: `expect`
[INFO] [stdout]    --> src/parser.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn expect(&self, t: &lexer::Token)  {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `force_eat_return_i32_lit`
[INFO] [stdout]    --> src/parser.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn force_eat_return_i32_lit(&mut self) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BeqLit`
[INFO] [stdout]   --> src/mips.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     BeqLit(Register, i32, &'a str),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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 test [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "c498b315178192447c7e57d800f9b9abe7a30ae5a4e4f40c7cadc16ef70ef43d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c498b315178192447c7e57d800f9b9abe7a30ae5a4e4f40c7cadc16ef70ef43d", kill_on_drop: false }`
[INFO] [stdout] c498b315178192447c7e57d800f9b9abe7a30ae5a4e4f40c7cadc16ef70ef43d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ed01b0d825ecff48697abc31beb3a09e8b1a2698fd9d7fb47317ae27c5440898
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ed01b0d825ecff48697abc31beb3a09e8b1a2698fd9d7fb47317ae27c5440898", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lexer.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         (self.chars.get(self.index+1))
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `i32` should have an upper camel case name
[INFO] [stderr]  --> src/parser.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     i32
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case (notice the capitalization): `I32`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `I32_lit` should have an upper camel case name
[INFO] [stderr]   --> src/parser.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     I32_lit(i32)
[INFO] [stderr]    |     ^^^^^^^ help: convert the identifier to upper camel case: `I32Lit`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/mips.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/parser.rs:179:34
[INFO] [stderr]     |
[INFO] [stderr] 179 |             &lexer::Token::Ident(s) if next == Some(&lexer::Token::OpenParen) => { self.parse_fn_call() }
[INFO] [stderr]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/parser.rs:180:34
[INFO] [stderr]     |
[INFO] [stderr] 180 |             &lexer::Token::Ident(s) => {
[INFO] [stderr]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/parser.rs:290:38
[INFO] [stderr]     |
[INFO] [stderr] 290 |         if let (&lexer::Token::Ident(s), Some(&lexer::Token::Equal)) = (self.current_tok(), self.peek()) {
[INFO] [stderr]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_identifier`
[INFO] [stderr]    --> src/lexer.rs:180:8
[INFO] [stderr]     |
[INFO] [stderr] 180 | pub fn is_identifier(t: &Token) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expect`
[INFO] [stderr]    --> src/parser.rs:132:8
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn expect(&self, t: &lexer::Token)  {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `force_eat_return_i32_lit`
[INFO] [stderr]    --> src/parser.rs:157:8
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn force_eat_return_i32_lit(&mut self) -> i32 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BeqLit`
[INFO] [stderr]   --> src/mips.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     BeqLit(Register, i32, &'a str),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     output.write_all(mips_str.as_bytes());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable `DeclData` should have a snake case name
[INFO] [stderr]    --> src/mips.rs:403:53
[INFO] [stderr]     |
[INFO] [stderr] 403 |                 &parser::Statement::Declaration(ref DeclData) => {
[INFO] [stderr]     |                                                     ^^^^^^^^ help: convert the identifier to snake case: `decl_data`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mipscompiler-b67942ff928d8c7e
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ed01b0d825ecff48697abc31beb3a09e8b1a2698fd9d7fb47317ae27c5440898", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed01b0d825ecff48697abc31beb3a09e8b1a2698fd9d7fb47317ae27c5440898", kill_on_drop: false }`
[INFO] [stdout] ed01b0d825ecff48697abc31beb3a09e8b1a2698fd9d7fb47317ae27c5440898