[INFO] cloning repository https://github.com/kbernst30/rust-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kbernst30/rust-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbernst30%2Frust-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbernst30%2Frust-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57caf7ed8ad05b9148838b00a5174849f67bd846
[INFO] checking kbernst30/rust-interpreter against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbernst30%2Frust-interpreter" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kbernst30/rust-interpreter on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kbernst30/rust-interpreter
[INFO] finished tweaking git repo https://github.com/kbernst30/rust-interpreter
[INFO] tweaked toml for git repo https://github.com/kbernst30/rust-interpreter written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/kbernst30/rust-interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6bce149e2fb5a39fe1a82a483eacd850d19cf7412a8fb7cbb346fa3eb747180
[INFO] running `Command { std: "docker" "start" "-a" "f6bce149e2fb5a39fe1a82a483eacd850d19cf7412a8fb7cbb346fa3eb747180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6bce149e2fb5a39fe1a82a483eacd850d19cf7412a8fb7cbb346fa3eb747180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6bce149e2fb5a39fe1a82a483eacd850d19cf7412a8fb7cbb346fa3eb747180", kill_on_drop: false }`
[INFO] [stdout] f6bce149e2fb5a39fe1a82a483eacd850d19cf7412a8fb7cbb346fa3eb747180
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdec31694dd517ead921d40a559292965beb022b8ba6cf51ab677cdadcdc1921
[INFO] running `Command { std: "docker" "start" "-a" "bdec31694dd517ead921d40a559292965beb022b8ba6cf51ab677cdadcdc1921", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking hello_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::symbol::Symbol`
[INFO] [stdout]  --> src/interpreter/intr.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::symbol::Symbol;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::symbol::Symbol`
[INFO] [stdout]  --> src/interpreter/intr.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::symbol::Symbol;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter/intr.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             _ => panic!("Expression not defined")
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter/intr.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |             _ => panic!("Expression not defined")
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `Command { std: "docker" "inspect" "bdec31694dd517ead921d40a559292965beb022b8ba6cf51ab677cdadcdc1921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdec31694dd517ead921d40a559292965beb022b8ba6cf51ab677cdadcdc1921", kill_on_drop: false }`
[INFO] [stdout] bdec31694dd517ead921d40a559292965beb022b8ba6cf51ab677cdadcdc1921