[INFO] cloning repository https://github.com/neilgall/lets-build-a-rusty-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/neilgall/lets-build-a-rusty-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneilgall%2Flets-build-a-rusty-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneilgall%2Flets-build-a-rusty-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9680f7114724d16f61320b05fb851f947fa0f5bd
[INFO] testing neilgall/lets-build-a-rusty-interpreter against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneilgall%2Flets-build-a-rusty-interpreter" "/workspace/builds/worker-18/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-18/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/neilgall/lets-build-a-rusty-interpreter on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/neilgall/lets-build-a-rusty-interpreter
[INFO] finished tweaking git repo https://github.com/neilgall/lets-build-a-rusty-interpreter
[INFO] tweaked toml for git repo https://github.com/neilgall/lets-build-a-rusty-interpreter written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] crate git repo https://github.com/neilgall/lets-build-a-rusty-interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e55e173ca61f7d6ca7ce5b323ab8b181da33e734c77a09351a3549508a3e643e
[INFO] running `Command { std: "docker" "start" "-a" "e55e173ca61f7d6ca7ce5b323ab8b181da33e734c77a09351a3549508a3e643e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e55e173ca61f7d6ca7ce5b323ab8b181da33e734c77a09351a3549508a3e643e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e55e173ca61f7d6ca7ce5b323ab8b181da33e734c77a09351a3549508a3e643e", kill_on_drop: false }`
[INFO] [stdout] e55e173ca61f7d6ca7ce5b323ab8b181da33e734c77a09351a3549508a3e643e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38527b1e6dd29a43943509f8639f79f6a1734954f6365399cd3d5f8d0a109910
[INFO] running `Command { std: "docker" "start" "-a" "38527b1e6dd29a43943509f8639f79f6a1734954f6365399cd3d5f8d0a109910", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]  --> src/number.rs:4:2
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Integer { value: i32 },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Number` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/number.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[derive(Clone, Debug, Eq, PartialEq)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Real`
[INFO] [stdout]  --> src/number.rs:5:2
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Real { value: String }
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Number` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/number.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[derive(Clone, Debug, Eq, PartialEq)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "38527b1e6dd29a43943509f8639f79f6a1734954f6365399cd3d5f8d0a109910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38527b1e6dd29a43943509f8639f79f6a1734954f6365399cd3d5f8d0a109910", kill_on_drop: false }`
[INFO] [stdout] 38527b1e6dd29a43943509f8639f79f6a1734954f6365399cd3d5f8d0a109910
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a9ab44bfdd3748df6d4ab8b15c24a7b9404edac9f8c3971d1be532ddec96409
[INFO] running `Command { std: "docker" "start" "-a" "8a9ab44bfdd3748df6d4ab8b15c24a7b9404edac9f8c3971d1be532ddec96409", kill_on_drop: false }`
[INFO] [stderr]    Compiling calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]  --> src/number.rs:4:2
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Integer { value: i32 },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Number` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/number.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[derive(Clone, Debug, Eq, PartialEq)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Real`
[INFO] [stdout]  --> src/number.rs:5:2
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Real { value: String }
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Number` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/number.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[derive(Clone, Debug, Eq, PartialEq)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "8a9ab44bfdd3748df6d4ab8b15c24a7b9404edac9f8c3971d1be532ddec96409", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a9ab44bfdd3748df6d4ab8b15c24a7b9404edac9f8c3971d1be532ddec96409", kill_on_drop: false }`
[INFO] [stdout] 8a9ab44bfdd3748df6d4ab8b15c24a7b9404edac9f8c3971d1be532ddec96409
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] da66c9ad51546bdcb4450fc303062e0759ebc16520d4603411474d7af94e843d
[INFO] running `Command { std: "docker" "start" "-a" "da66c9ad51546bdcb4450fc303062e0759ebc16520d4603411474d7af94e843d", kill_on_drop: false }`
[INFO] [stderr] warning: variant is never constructed: `Integer`
[INFO] [stderr]  --> src/number.rs:4:2
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Integer { value: i32 },
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Number` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/number.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[derive(Clone, Debug, Eq, PartialEq)]
[INFO] [stderr]   |          ^^^^^  ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Real`
[INFO] [stderr]  --> src/number.rs:5:2
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Real { value: String }
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `Number` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/number.rs:2:10
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[derive(Clone, Debug, Eq, PartialEq)]
[INFO] [stderr]   |          ^^^^^  ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `calculator` (bin "calculator" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/calculator-d3dc229ccbd4c3ff)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test lexer::tests::assign ... ok
[INFO] [stdout] test lexer::tests::alphanumeric_identifier ... ok
[INFO] [stdout] test lexer::tests::identifier ... ok
[INFO] [stdout] test lexer::tests::colon ... ok
[INFO] [stdout] test lexer::tests::integer ... ok
[INFO] [stdout] test lexer::tests::dot ... ok
[INFO] [stdout] test lexer::tests::real ... ok
[INFO] [stdout] test parser::tests::test_sample_program ... ok
[INFO] [stdout] test lexer::tests::keywords ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "da66c9ad51546bdcb4450fc303062e0759ebc16520d4603411474d7af94e843d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da66c9ad51546bdcb4450fc303062e0759ebc16520d4603411474d7af94e843d", kill_on_drop: false }`
[INFO] [stdout] da66c9ad51546bdcb4450fc303062e0759ebc16520d4603411474d7af94e843d