[INFO] fetching crate monkey-interpreter 0.4.0...
[INFO] testing monkey-interpreter-0.4.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate monkey-interpreter 0.4.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate monkey-interpreter 0.4.0 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 crates.io crate monkey-interpreter 0.4.0
[INFO] finished tweaking crates.io crate monkey-interpreter 0.4.0
[INFO] tweaked toml for crates.io crate monkey-interpreter 0.4.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate monkey-interpreter 0.4.0 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 77d8fc74d7d1fa810be83f5ffdebd14133c5fa3eeff95d0ac7b35acf6fb7bd54
[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" "77d8fc74d7d1fa810be83f5ffdebd14133c5fa3eeff95d0ac7b35acf6fb7bd54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77d8fc74d7d1fa810be83f5ffdebd14133c5fa3eeff95d0ac7b35acf6fb7bd54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77d8fc74d7d1fa810be83f5ffdebd14133c5fa3eeff95d0ac7b35acf6fb7bd54", kill_on_drop: false }`
[INFO] [stdout] 77d8fc74d7d1fa810be83f5ffdebd14133c5fa3eeff95d0ac7b35acf6fb7bd54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 95217adc48068823cb27ad8cfd16a067f582987180799b528d9e2d41b18599dd
[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" "95217adc48068823cb27ad8cfd16a067f582987180799b528d9e2d41b18599dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling monkey-lexer v0.4.0
[INFO] [stderr]    Compiling monkey-parser v0.4.0
[INFO] [stderr]    Compiling monkey-interpreter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.56s
[INFO] running `Command { std: "docker" "inspect" "95217adc48068823cb27ad8cfd16a067f582987180799b528d9e2d41b18599dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95217adc48068823cb27ad8cfd16a067f582987180799b528d9e2d41b18599dd", kill_on_drop: false }`
[INFO] [stdout] 95217adc48068823cb27ad8cfd16a067f582987180799b528d9e2d41b18599dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 1952d160dafff7952843996b21fb93d285b84a2fe73cf00d7cabcedb40b643c4
[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" "1952d160dafff7952843996b21fb93d285b84a2fe73cf00d7cabcedb40b643c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey-interpreter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "1952d160dafff7952843996b21fb93d285b84a2fe73cf00d7cabcedb40b643c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1952d160dafff7952843996b21fb93d285b84a2fe73cf00d7cabcedb40b643c4", kill_on_drop: false }`
[INFO] [stdout] 1952d160dafff7952843996b21fb93d285b84a2fe73cf00d7cabcedb40b643c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 4f7bf1a922393dc2f06f788ff4fbd78db6ed223d4731bf899f8522ff160fc7dc
[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" "4f7bf1a922393dc2f06f788ff4fbd78db6ed223d4731bf899f8522ff160fc7dc", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/interpreter-da9c154ed05238e6
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test tests::test_array_builtin_functions ... ok
[INFO] [stdout] test tests::test_let_statements ... ok
[INFO] [stdout] test tests::test_array_index_expressions ... ok
[INFO] [stdout] test tests::test_return_statements ... ok
[INFO] [stdout] test tests::test_string_concatenation ... ok
[INFO] [stdout] test tests::test_hash_index_expressions ... ok
[INFO] [stdout] test tests::test_if_else_expressions ... ok
[INFO] [stdout] test tests::test_integer_expressions ... ok
[INFO] [stdout] test tests::test_function_object ... ok
[INFO] [stdout] test tests::test_function_application ... ok
[INFO] [stdout] test tests::test_builtin_functions ... ok
[INFO] [stdout] test tests::test_boolean_expressions ... ok
[INFO] [stdout] test tests::test_bang_operators ... ok
[INFO] [stdout] test tests::test_array_literals ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/monkey_interpreter-3e5da40158eddec2
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests interpreter
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4f7bf1a922393dc2f06f788ff4fbd78db6ed223d4731bf899f8522ff160fc7dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f7bf1a922393dc2f06f788ff4fbd78db6ed223d4731bf899f8522ff160fc7dc", kill_on_drop: false }`
[INFO] [stdout] 4f7bf1a922393dc2f06f788ff4fbd78db6ed223d4731bf899f8522ff160fc7dc