[INFO] cloning repository https://github.com/rgodha24/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rgodha24/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frgodha24%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frgodha24%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] afa56a7aa3ab11c9b1abc67859ddaa9f08009852
[INFO] checking rgodha24/rlox against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frgodha24%2Frlox" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rgodha24/rlox on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rgodha24/rlox
[INFO] finished tweaking git repo https://github.com/rgodha24/rlox
[INFO] tweaked toml for git repo https://github.com/rgodha24/rlox written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rgodha24/rlox 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "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 rgodha24/rlox against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frgodha24%2Frlox" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rgodha24/rlox on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rgodha24/rlox
[INFO] finished tweaking git repo https://github.com/rgodha24/rlox
[INFO] tweaked toml for git repo https://github.com/rgodha24/rlox written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rgodha24/rlox 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c833140887da2485af2551282b5ecec24ab9a439300969d48767801e1bed2033
[INFO] running `Command { std: "docker" "start" "-a" "c833140887da2485af2551282b5ecec24ab9a439300969d48767801e1bed2033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c833140887da2485af2551282b5ecec24ab9a439300969d48767801e1bed2033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c833140887da2485af2551282b5ecec24ab9a439300969d48767801e1bed2033", kill_on_drop: false }`
[INFO] [stdout] c833140887da2485af2551282b5ecec24ab9a439300969d48767801e1bed2033
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Ddereferencing_mut_binding" "-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" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18ce94eec1fe1368dd36467ca071e1e6daf26accfe9e91d91c0864e9c1caec72
[INFO] running `Command { std: "docker" "start" "-a" "18ce94eec1fe1368dd36467ca071e1e6daf26accfe9e91d91c0864e9c1caec72", kill_on_drop: false }`
[INFO] [stderr]     Checking lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/eval.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cell::{Cell, RefCell},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/expr.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |     tokens::{Token, TokenType},
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/parser.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     expr::{Expr, Literal},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/eval.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     cell::{Cell, RefCell},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/expr.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 |     tokens::{Token, TokenType},
[INFO] [stdout]   |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/parser.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 |     expr::{Expr, Literal},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/macros.rs:7:17
[INFO] [stdout]     |
[INFO] [stdout] 7   |                 _ => Err(()),
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/expr.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 | ... = convert!(BinaryOperator; TokenType; self; Slash,Star,BangEqual,Equal,EqualEqual,Greater,GreaterEqual,Less,LessEqual,Minus,Plus,;);
[INFO] [stdout]     |       --------------------------------------------------------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `convert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/macros.rs:7:17
[INFO] [stdout]     |
[INFO] [stdout] 7   |                 _ => Err(()),
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/expr.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 | ... = convert!(BinaryOperator; TokenType; self; Slash,Star,BangEqual,Equal,EqualEqual,Greater,GreaterEqual,Less,LessEqual,Minus,Plus,;);
[INFO] [stdout]     |       --------------------------------------------------------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `convert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/macros.rs:7:17
[INFO] [stdout]     |
[INFO] [stdout] 7   |                 _ => Err(()),
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/expr.rs:156:21
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let token = convert!(UnaryOperator; TokenType; self; Minus,Bang,;);
[INFO] [stdout]     |                     ------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `convert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/macros.rs:7:17
[INFO] [stdout]     |
[INFO] [stdout] 7   |                 _ => Err(()),
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/expr.rs:156:21
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let token = convert!(UnaryOperator; TokenType; self; Minus,Bang,;);
[INFO] [stdout]     |                     ------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `convert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/macros.rs:7:17
[INFO] [stdout]     |
[INFO] [stdout] 7   |                 _ => Err(()),
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/expr.rs:164:21
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let token = convert!(Literal; TokenType; self; Nil,True,False,;Identifier,Number,String,);
[INFO] [stdout]     |                     ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `convert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/macros.rs:7:17
[INFO] [stdout]     |
[INFO] [stdout] 7   |                 _ => Err(()),
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/expr.rs:164:21
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let token = convert!(Literal; TokenType; self; Nil,True,False,;Identifier,Number,String,);
[INFO] [stdout]     |                     ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `convert` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/eval.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Interpreter {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 46 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnexpectedToken` is never constructed
[INFO] [stdout]    --> src/parser.rs:354:5
[INFO] [stdout]     |
[INFO] [stdout] 352 | pub enum ParserErrorType {
[INFO] [stdout]     |          --------------- variant in this enum
[INFO] [stdout] 353 |     UnclosedParenthesis,
[INFO] [stdout] 354 |     UnexpectedToken,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParserErrorType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/eval.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Interpreter {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 46 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnexpectedToken` is never constructed
[INFO] [stdout]    --> src/parser.rs:354:5
[INFO] [stdout]     |
[INFO] [stdout] 352 | pub enum ParserErrorType {
[INFO] [stdout]     |          --------------- variant in this enum
[INFO] [stdout] 353 |     UnclosedParenthesis,
[INFO] [stdout] 354 |     UnexpectedToken,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParserErrorType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "18ce94eec1fe1368dd36467ca071e1e6daf26accfe9e91d91c0864e9c1caec72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18ce94eec1fe1368dd36467ca071e1e6daf26accfe9e91d91c0864e9c1caec72", kill_on_drop: false }`
[INFO] [stdout] 18ce94eec1fe1368dd36467ca071e1e6daf26accfe9e91d91c0864e9c1caec72