[INFO] cloning repository https://github.com/hymm/old_iron_lox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hymm/old_iron_lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhymm%2Fold_iron_lox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhymm%2Fold_iron_lox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 761f8dba788222f6d915c94c5f3dcb7c858cd8e6
[INFO] checking hymm/old_iron_lox against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhymm%2Fold_iron_lox" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hymm/old_iron_lox on toolchain cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/hymm/old_iron_lox
[INFO] finished tweaking git repo https://github.com/hymm/old_iron_lox
[INFO] tweaked toml for git repo https://github.com/hymm/old_iron_lox written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hymm/old_iron_lox 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" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9d9f60aeff8a944363def52625f427d51a458c957158b562d8976ce9fa31107
[INFO] running `Command { std: "docker" "start" "-a" "a9d9f60aeff8a944363def52625f427d51a458c957158b562d8976ce9fa31107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9d9f60aeff8a944363def52625f427d51a458c957158b562d8976ce9fa31107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d9f60aeff8a944363def52625f427d51a458c957158b562d8976ce9fa31107", kill_on_drop: false }`
[INFO] [stdout] a9d9f60aeff8a944363def52625f427d51a458c957158b562d8976ce9fa31107
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4212d4b549f1b063d3a1f595fc948d9f65996745655f5aa45147a3e6fd8a386c
[INFO] running `Command { std: "docker" "start" "-a" "4212d4b549f1b063d3a1f595fc948d9f65996745655f5aa45147a3e6fd8a386c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking old_iron_lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `CompileError` and `RuntimeError` are never constructed
[INFO] [stdout]    --> src/vm.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub enum InterpretError {
[INFO] [stdout]     |          -------------- variants in this enum
[INFO] [stdout] 144 |     CompileError,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 145 |     RuntimeError,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `CompileError` and `RuntimeError` are never constructed
[INFO] [stdout]    --> src/vm.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub enum InterpretError {
[INFO] [stdout]     |          -------------- variants in this enum
[INFO] [stdout] 144 |     CompileError,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 145 |     RuntimeError,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.07s
[INFO] running `Command { std: "docker" "inspect" "4212d4b549f1b063d3a1f595fc948d9f65996745655f5aa45147a3e6fd8a386c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4212d4b549f1b063d3a1f595fc948d9f65996745655f5aa45147a3e6fd8a386c", kill_on_drop: false }`
[INFO] [stdout] 4212d4b549f1b063d3a1f595fc948d9f65996745655f5aa45147a3e6fd8a386c