[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 beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneilgall%2Flets-build-a-rusty-interpreter" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/neilgall/lets-build-a-rusty-interpreter on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", 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-0/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" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cbdae9cedaa0dd7a0758f9d90aa5a1f565984dfb0375eec95babb58d3813178
[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" "3cbdae9cedaa0dd7a0758f9d90aa5a1f565984dfb0375eec95babb58d3813178", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cbdae9cedaa0dd7a0758f9d90aa5a1f565984dfb0375eec95babb58d3813178", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cbdae9cedaa0dd7a0758f9d90aa5a1f565984dfb0375eec95babb58d3813178", kill_on_drop: false }`
[INFO] [stdout] 3cbdae9cedaa0dd7a0758f9d90aa5a1f565984dfb0375eec95babb58d3813178
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d29de243a8fb3a3b470c93952f9ada89539d45c3236e6b7752b1760642ed662b
[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" "d29de243a8fb3a3b470c93952f9ada89539d45c3236e6b7752b1760642ed662b", 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] 
[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] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "d29de243a8fb3a3b470c93952f9ada89539d45c3236e6b7752b1760642ed662b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d29de243a8fb3a3b470c93952f9ada89539d45c3236e6b7752b1760642ed662b", kill_on_drop: false }`
[INFO] [stdout] d29de243a8fb3a3b470c93952f9ada89539d45c3236e6b7752b1760642ed662b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 351fdc3e6970b85b8202ddc1917d39d8b013a4096f4ea6d7b871a1e8f4b04172
[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" "351fdc3e6970b85b8202ddc1917d39d8b013a4096f4ea6d7b871a1e8f4b04172", 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] 
[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] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.25s
[INFO] running `Command { std: "docker" "inspect" "351fdc3e6970b85b8202ddc1917d39d8b013a4096f4ea6d7b871a1e8f4b04172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351fdc3e6970b85b8202ddc1917d39d8b013a4096f4ea6d7b871a1e8f4b04172", kill_on_drop: false }`
[INFO] [stdout] 351fdc3e6970b85b8202ddc1917d39d8b013a4096f4ea6d7b871a1e8f4b04172
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e7f67893ff0b874a5ed7da708846f6f03352c536f89e7af0ffe6f2a0e2329c57
[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" "e7f67893ff0b874a5ed7da708846f6f03352c536f89e7af0ffe6f2a0e2329c57", 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] 
[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] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/calculator-d200636fe9bce666
[INFO] [stdout] running 9 tests
[INFO] [stdout] test lexer::tests::alphanumeric_identifier ... ok
[INFO] [stdout] test lexer::tests::identifier ... ok
[INFO] [stdout] test lexer::tests::integer ... ok
[INFO] [stdout] test lexer::tests::keywords ... ok
[INFO] [stdout] test lexer::tests::real ... ok
[INFO] [stdout] test lexer::tests::assign ... ok
[INFO] [stdout] test lexer::tests::colon ... ok
[INFO] [stdout] test lexer::tests::dot ... ok
[INFO] [stdout] test parser::tests::test_sample_program ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e7f67893ff0b874a5ed7da708846f6f03352c536f89e7af0ffe6f2a0e2329c57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7f67893ff0b874a5ed7da708846f6f03352c536f89e7af0ffe6f2a0e2329c57", kill_on_drop: false }`
[INFO] [stdout] e7f67893ff0b874a5ed7da708846f6f03352c536f89e7af0ffe6f2a0e2329c57