[INFO] cloning repository https://github.com/ElementG9/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ElementG9/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElementG9%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElementG9%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6a90cc51889c55cd1a79aea44169e20eb1ec6be
[INFO] checking ElementG9/rlox against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElementG9%2Frlox" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ElementG9/rlox on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ElementG9/rlox
[INFO] finished tweaking git repo https://github.com/ElementG9/rlox
[INFO] tweaked toml for git repo https://github.com/ElementG9/rlox written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/ElementG9/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57f84a15dfdde352ef77a811a93e1ceeede0e2ac9f3c42a54db91b62de2d4462
[INFO] running `Command { std: "docker" "start" "-a" "57f84a15dfdde352ef77a811a93e1ceeede0e2ac9f3c42a54db91b62de2d4462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57f84a15dfdde352ef77a811a93e1ceeede0e2ac9f3c42a54db91b62de2d4462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57f84a15dfdde352ef77a811a93e1ceeede0e2ac9f3c42a54db91b62de2d4462", kill_on_drop: false }`
[INFO] [stdout] 57f84a15dfdde352ef77a811a93e1ceeede0e2ac9f3c42a54db91b62de2d4462
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ded2349acfa03555c9063074580b5eee238e9cff8460bb60812e72afd3a12aab
[INFO] running `Command { std: "docker" "start" "-a" "ded2349acfa03555c9063074580b5eee238e9cff8460bb60812e72afd3a12aab", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/scanner.rs:438:17
[INFO] [stdout]     |
[INFO] [stdout] 438 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/scanner.rs:429:13
[INFO] [stdout]     |
[INFO] [stdout] 429 |         let mut t = s.scan_tokens();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_scanner_scanning`
[INFO] [stdout]    --> src/scanner.rs:427:8
[INFO] [stdout]     |
[INFO] [stdout] 427 |     fn test_scanner_scanning() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "ded2349acfa03555c9063074580b5eee238e9cff8460bb60812e72afd3a12aab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ded2349acfa03555c9063074580b5eee238e9cff8460bb60812e72afd3a12aab", kill_on_drop: false }`
[INFO] [stdout] ded2349acfa03555c9063074580b5eee238e9cff8460bb60812e72afd3a12aab