[INFO] cloning repository https://github.com/eanyanwu/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eanyanwu/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feanyanwu%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feanyanwu%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 724ff3d8b20eeeeeb9145b879543667379776611
[INFO] checking eanyanwu/rlox against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feanyanwu%2Frlox" "/workspace/builds/worker-41/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-41/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eanyanwu/rlox on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eanyanwu/rlox
[INFO] finished tweaking git repo https://github.com/eanyanwu/rlox
[INFO] tweaked toml for git repo https://github.com/eanyanwu/rlox written to /workspace/builds/worker-41/source/Cargo.toml
[INFO] crate git repo https://github.com/eanyanwu/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b1917d1b3cecd24e20635b36b1ecff56b732db094a82b22935f5c2e249ed61e
[INFO] running `Command { std: "docker" "start" "-a" "0b1917d1b3cecd24e20635b36b1ecff56b732db094a82b22935f5c2e249ed61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b1917d1b3cecd24e20635b36b1ecff56b732db094a82b22935f5c2e249ed61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b1917d1b3cecd24e20635b36b1ecff56b732db094a82b22935f5c2e249ed61e", kill_on_drop: false }`
[INFO] [stdout] 0b1917d1b3cecd24e20635b36b1ecff56b732db094a82b22935f5c2e249ed61e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 084353f46dffa08170cf3e0c90398a8134ead9b122e8a4ff06f09c678d40e779
[INFO] running `Command { std: "docker" "start" "-a" "084353f46dffa08170cf3e0c90398a8134ead9b122e8a4ff06f09c678d40e779", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/parser.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 |     fn next(&self) -> Option<Token> {
[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: `previous`
[INFO] [stdout]    --> src/parser.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn previous(&self) -> Option<Token> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/parser.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 |     fn next(&self) -> Option<Token> {
[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: `previous`
[INFO] [stdout]    --> src/parser.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn previous(&self) -> Option<Token> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.39s
[INFO] running `Command { std: "docker" "inspect" "084353f46dffa08170cf3e0c90398a8134ead9b122e8a4ff06f09c678d40e779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "084353f46dffa08170cf3e0c90398a8134ead9b122e8a4ff06f09c678d40e779", kill_on_drop: false }`
[INFO] [stdout] 084353f46dffa08170cf3e0c90398a8134ead9b122e8a4ff06f09c678d40e779