[INFO] cloning repository https://github.com/mmatila/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmatila/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmatila%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmatila%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76980e1b6775896bb4afee9fa7cac12bf8810a27
[INFO] checking mmatila/rlox against master#12f35ad39ed3e39df4d953c46d4f6cc6c82adc96 for pr-155299-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmatila%2Frlox" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mmatila/rlox
[INFO] finished tweaking git repo https://github.com/mmatila/rlox
[INFO] tweaked toml for git repo https://github.com/mmatila/rlox written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mmatila/rlox on toolchain 12f35ad39ed3e39df4d953c46d4f6cc6c82adc96
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mmatila/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" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e37001fbf95b83a2456a249d8f1d9c61cd513f8bc0926b95bbd0f64ca93206e8
[INFO] running `Command { std: "docker" "start" "-a" "e37001fbf95b83a2456a249d8f1d9c61cd513f8bc0926b95bbd0f64ca93206e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e37001fbf95b83a2456a249d8f1d9c61cd513f8bc0926b95bbd0f64ca93206e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e37001fbf95b83a2456a249d8f1d9c61cd513f8bc0926b95bbd0f64ca93206e8", kill_on_drop: false }`
[INFO] [stdout] e37001fbf95b83a2456a249d8f1d9c61cd513f8bc0926b95bbd0f64ca93206e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+12f35ad39ed3e39df4d953c46d4f6cc6c82adc96" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cedd381ff477a0816bb406908209ad5de613d8a5c0287cb02af7cd87e2dccdb
[INFO] running `Command { std: "docker" "start" "-a" "1cedd381ff477a0816bb406908209ad5de613d8a5c0287cb02af7cd87e2dccdb", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking lib v0.1.0 (/opt/rustwide/workdir/lib)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> lib/src/debug.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         _ => println!("Unknown opcode {:?}", instruction),
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> lib/src/debug.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         OpCode::Return => simple_instruction("RETURN"),
[INFO] [stdout]    |         -------------- matches some of the same values
[INFO] [stdout] 25 |         OpCode::Constant(index) => constant_instruction("CONSTANT", chunk, offset, index),
[INFO] [stdout]    |         ----------------------- matches some of the same values
[INFO] [stdout] 26 |         _ => println!("Unknown opcode {:?}", instruction),
[INFO] [stdout]    |         ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bin v0.1.0 (/opt/rustwide/workdir/bin)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> lib/src/debug.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         _ => println!("Unknown opcode {:?}", instruction),
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> lib/src/debug.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         OpCode::Return => simple_instruction("RETURN"),
[INFO] [stdout]    |         -------------- matches some of the same values
[INFO] [stdout] 25 |         OpCode::Constant(index) => constant_instruction("CONSTANT", chunk, offset, index),
[INFO] [stdout]    |         ----------------------- matches some of the same values
[INFO] [stdout] 26 |         _ => println!("Unknown opcode {:?}", instruction),
[INFO] [stdout]    |         ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "1cedd381ff477a0816bb406908209ad5de613d8a5c0287cb02af7cd87e2dccdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cedd381ff477a0816bb406908209ad5de613d8a5c0287cb02af7cd87e2dccdb", kill_on_drop: false }`
[INFO] [stdout] 1cedd381ff477a0816bb406908209ad5de613d8a5c0287cb02af7cd87e2dccdb