[INFO] cloning repository https://github.com/arashout/craftinginterperter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arashout/craftinginterperter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farashout%2Fcraftinginterperter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farashout%2Fcraftinginterperter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e58c8ee40d4289d943954ca6ba33f833d75f47dd
[INFO] checking arashout/craftinginterperter against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farashout%2Fcraftinginterperter" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arashout/craftinginterperter on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arashout/craftinginterperter
[INFO] finished tweaking git repo https://github.com/arashout/craftinginterperter
[INFO] tweaked toml for git repo https://github.com/arashout/craftinginterperter written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/arashout/craftinginterperter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] af47f168a3fea995e2d39e8526568a78923ed163ba23f19b67fca0b7a3e09875
[INFO] running `Command { std: "docker" "start" "-a" "af47f168a3fea995e2d39e8526568a78923ed163ba23f19b67fca0b7a3e09875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af47f168a3fea995e2d39e8526568a78923ed163ba23f19b67fca0b7a3e09875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af47f168a3fea995e2d39e8526568a78923ed163ba23f19b67fca0b7a3e09875", kill_on_drop: false }`
[INFO] [stdout] af47f168a3fea995e2d39e8526568a78923ed163ba23f19b67fca0b7a3e09875
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee661f07cbc31d1c5ae9bb62b8002b687502fd431715a4e2f8443724b6dd93a1
[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" "ee661f07cbc31d1c5ae9bb62b8002b687502fd431715a4e2f8443724b6dd93a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling strum_macros v0.17.1
[INFO] [stderr]     Checking craft_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/parser.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |         if (!self.is_at_end()) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/parser.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |         if (!self.is_at_end()) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `discriminant`
[INFO] [stdout]   --> src/scanner.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn discriminant(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Binary`
[INFO] [stdout]    --> src/ast.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     Binary(Operator, Box<Expr>, Box<Expr>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Grouping`
[INFO] [stdout]    --> src/ast.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |     Grouping(Box<Expr>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Literal`
[INFO] [stdout]    --> src/ast.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     Literal(Primitive),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unary`
[INFO] [stdout]    --> src/ast.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     Unary(Operator, Box<Expr>),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/parser.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Parser {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parser.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(tokens: Vec<TokenWrapper>) -> Parser {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expression`
[INFO] [stdout]   --> src/parser.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn expression(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `equality`
[INFO] [stdout]   --> src/parser.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn equality(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `comparison`
[INFO] [stdout]   --> src/parser.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn comparison(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `addition`
[INFO] [stdout]   --> src/parser.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn addition(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `multiplication`
[INFO] [stdout]   --> src/parser.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn multiplication(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unary`
[INFO] [stdout]   --> src/parser.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn unary(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `primary`
[INFO] [stdout]   --> src/parser.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn primary(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check`
[INFO] [stdout]    --> src/parser.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn check(&self, needle: &Token) -> bool {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]    --> src/parser.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn advance(&mut self) -> &Token {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_at_end`
[INFO] [stdout]    --> src/parser.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn is_at_end(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]    --> src/parser.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn peek(&self) -> &Token {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `previous`
[INFO] [stdout]    --> src/parser.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn previous(&self) -> &TokenWrapper {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rpn`
[INFO] [stdout]  --> src/rpn.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn rpn(expr: &Expr) -> String {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `join_vec_debug`
[INFO] [stdout]  --> src/utils.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn join_vec_debug<T: Debug>(vec: &Vec<T>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `s`
[INFO] [stdout]   --> src/utils.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn s(_s: &'static str) -> String {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/parser.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Parser {
[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: `new`
[INFO] [stdout]   --> src/parser.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(tokens: Vec<TokenWrapper>) -> Parser {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expression`
[INFO] [stdout]   --> src/parser.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn expression(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `equality`
[INFO] [stdout]   --> src/parser.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn equality(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `comparison`
[INFO] [stdout]   --> src/parser.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn comparison(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `addition`
[INFO] [stdout]   --> src/parser.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn addition(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `multiplication`
[INFO] [stdout]   --> src/parser.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn multiplication(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unary`
[INFO] [stdout]   --> src/parser.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn unary(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `primary`
[INFO] [stdout]   --> src/parser.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn primary(&mut self) -> Expr {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check`
[INFO] [stdout]    --> src/parser.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn check(&self, needle: &Token) -> bool {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]    --> src/parser.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn advance(&mut self) -> &Token {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_at_end`
[INFO] [stdout]    --> src/parser.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn is_at_end(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]    --> src/parser.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn peek(&self) -> &Token {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `previous`
[INFO] [stdout]    --> src/parser.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn previous(&self) -> &TokenWrapper {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.18s
[INFO] running `Command { std: "docker" "inspect" "ee661f07cbc31d1c5ae9bb62b8002b687502fd431715a4e2f8443724b6dd93a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee661f07cbc31d1c5ae9bb62b8002b687502fd431715a4e2f8443724b6dd93a1", kill_on_drop: false }`
[INFO] [stdout] ee661f07cbc31d1c5ae9bb62b8002b687502fd431715a4e2f8443724b6dd93a1