[INFO] cloning repository https://github.com/rabingaire/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rabingaire/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frabingaire%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frabingaire%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e02be91a432de7369387be1219727550574013ff
[INFO] checking rabingaire/rlox against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frabingaire%2Frlox" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rabingaire/rlox on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rabingaire/rlox
[INFO] finished tweaking git repo https://github.com/rabingaire/rlox
[INFO] tweaked toml for git repo https://github.com/rabingaire/rlox written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/rabingaire/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "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] 2f1ee7b563e7c6a0907d04fe1cc4722a9e48bdd16bfb42fab3bd6398ee810074
[INFO] running `Command { std: "docker" "start" "-a" "2f1ee7b563e7c6a0907d04fe1cc4722a9e48bdd16bfb42fab3bd6398ee810074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f1ee7b563e7c6a0907d04fe1cc4722a9e48bdd16bfb42fab3bd6398ee810074", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f1ee7b563e7c6a0907d04fe1cc4722a9e48bdd16bfb42fab3bd6398ee810074", kill_on_drop: false }`
[INFO] [stdout] 2f1ee7b563e7c6a0907d04fe1cc4722a9e48bdd16bfb42fab3bd6398ee810074
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c432393458b2724f99054d5bab87bcee2441e27ccec0a6db531c32dd4e5cef7
[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" "9c432393458b2724f99054d5bab87bcee2441e27ccec0a6db531c32dd4e5cef7", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `INTERPRET_COMPILE_ERROR`
[INFO] [stdout]  --> src/vm.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   INTERPRET_COMPILE_ERROR,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INTERPRET_RUNTIME_ERROR`
[INFO] [stdout]  --> src/vm.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   INTERPRET_RUNTIME_ERROR,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INTERPRET_COMPILE_ERROR`
[INFO] [stdout]  --> src/vm.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   INTERPRET_COMPILE_ERROR,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INTERPRET_RUNTIME_ERROR`
[INFO] [stdout]  --> src/vm.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   INTERPRET_RUNTIME_ERROR,
[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 0.44s
[INFO] running `Command { std: "docker" "inspect" "9c432393458b2724f99054d5bab87bcee2441e27ccec0a6db531c32dd4e5cef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c432393458b2724f99054d5bab87bcee2441e27ccec0a6db531c32dd4e5cef7", kill_on_drop: false }`
[INFO] [stdout] 9c432393458b2724f99054d5bab87bcee2441e27ccec0a6db531c32dd4e5cef7