[INFO] cloning repository https://github.com/mesaverde0207/toy-c-compiler-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mesaverde0207/toy-c-compiler-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmesaverde0207%2Ftoy-c-compiler-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmesaverde0207%2Ftoy-c-compiler-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5cfe794d04bb0e1771d2b770b32a4fbf9d8e06d
[INFO] checking mesaverde0207/toy-c-compiler-in-rust against try#42d1facfffa1a5357d6d62815f7be91f8ad69ed8 for pr-95474
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmesaverde0207%2Ftoy-c-compiler-in-rust" "/workspace/builds/worker-107/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust on toolchain 42d1facfffa1a5357d6d62815f7be91f8ad69ed8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+42d1facfffa1a5357d6d62815f7be91f8ad69ed8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust
[INFO] finished tweaking git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust
[INFO] tweaked toml for git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate git repo https://github.com/mesaverde0207/toy-c-compiler-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+42d1facfffa1a5357d6d62815f7be91f8ad69ed8" "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-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+42d1facfffa1a5357d6d62815f7be91f8ad69ed8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4406b16779b4137f2f83b41beb7799c3e924d7f1cddf9020fc8bd62968dcb57
[INFO] running `Command { std: "docker" "start" "-a" "a4406b16779b4137f2f83b41beb7799c3e924d7f1cddf9020fc8bd62968dcb57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4406b16779b4137f2f83b41beb7799c3e924d7f1cddf9020fc8bd62968dcb57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4406b16779b4137f2f83b41beb7799c3e924d7f1cddf9020fc8bd62968dcb57", kill_on_drop: false }`
[INFO] [stdout] a4406b16779b4137f2f83b41beb7799c3e924d7f1cddf9020fc8bd62968dcb57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+42d1facfffa1a5357d6d62815f7be91f8ad69ed8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23ac0809d6ac6889298a00dfb5c52e082239feabfdc80962140d727a548c69a9
[INFO] running `Command { std: "docker" "start" "-a" "23ac0809d6ac6889298a00dfb5c52e082239feabfdc80962140d727a548c69a9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking toy-c-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `tree`
[INFO] [stdout]   --> src/tinyc/parser.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     tree: Tree,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Parser` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/tinyc/parser.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tree`
[INFO] [stdout]   --> src/tinyc/parser.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     tree: Tree,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Parser` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/tinyc/parser.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.67s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "23ac0809d6ac6889298a00dfb5c52e082239feabfdc80962140d727a548c69a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23ac0809d6ac6889298a00dfb5c52e082239feabfdc80962140d727a548c69a9", kill_on_drop: false }`
[INFO] [stdout] 23ac0809d6ac6889298a00dfb5c52e082239feabfdc80962140d727a548c69a9