[INFO] cloning repository https://github.com/arlopurcell/zax
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arlopurcell/zax" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlopurcell%2Fzax", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlopurcell%2Fzax'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23ebe5d26b05196d2ab7ee75f75427aaf898ddec
[INFO] testing arlopurcell/zax against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farlopurcell%2Fzax" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arlopurcell/zax on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arlopurcell/zax
[INFO] finished tweaking git repo https://github.com/arlopurcell/zax
[INFO] tweaked toml for git repo https://github.com/arlopurcell/zax written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/arlopurcell/zax already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 20404167b0942225ff93265e5ad73ad7f2f0274e89b91742d8a056933a3164f4
[INFO] running `Command { std: "docker" "start" "-a" "20404167b0942225ff93265e5ad73ad7f2f0274e89b91742d8a056933a3164f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20404167b0942225ff93265e5ad73ad7f2f0274e89b91742d8a056933a3164f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20404167b0942225ff93265e5ad73ad7f2f0274e89b91742d8a056933a3164f4", kill_on_drop: false }`
[INFO] [stdout] 20404167b0942225ff93265e5ad73ad7f2f0274e89b91742d8a056933a3164f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7b3efffc4366de04c79a190416b39efc71af2812e20241cdda9fdd84b89166d
[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" "e7b3efffc4366de04c79a190416b39efc71af2812e20241cdda9fdd84b89166d", kill_on_drop: false }`
[INFO] [stderr]    Compiling zax v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]   --> src/object.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/code_gen.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         &mut self.emit_byte(ByteCode::Return(0), 0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let _ = &mut self.emit_byte(ByteCode::Return(0), 0);
[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 5.47s
[INFO] running `Command { std: "docker" "inspect" "e7b3efffc4366de04c79a190416b39efc71af2812e20241cdda9fdd84b89166d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7b3efffc4366de04c79a190416b39efc71af2812e20241cdda9fdd84b89166d", kill_on_drop: false }`
[INFO] [stdout] e7b3efffc4366de04c79a190416b39efc71af2812e20241cdda9fdd84b89166d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d79e346b64632991c8ab310d06752fc1857d1171fbd202f1b3070cb27118bd43
[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" "d79e346b64632991c8ab310d06752fc1857d1171fbd202f1b3070cb27118bd43", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]   --> src/object.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/code_gen.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         &mut self.emit_byte(ByteCode::Return(0), 0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let _ = &mut self.emit_byte(ByteCode::Return(0), 0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling predicates-core v1.0.0
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling predicates-tree v1.0.0
[INFO] [stderr]    Compiling predicates v1.0.5
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling assert_cmd v1.0.1
[INFO] [stderr]    Compiling zax v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]   --> src/object.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Nil,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/code_gen.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         &mut self.emit_byte(ByteCode::Return(0), 0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let _ = &mut self.emit_byte(ByteCode::Return(0), 0);
[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 11.00s
[INFO] running `Command { std: "docker" "inspect" "d79e346b64632991c8ab310d06752fc1857d1171fbd202f1b3070cb27118bd43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d79e346b64632991c8ab310d06752fc1857d1171fbd202f1b3070cb27118bd43", kill_on_drop: false }`
[INFO] [stdout] d79e346b64632991c8ab310d06752fc1857d1171fbd202f1b3070cb27118bd43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e69978a47c7467d81c5261eda10be60fc4b3513f8097f2cb026fceb3e68b1b81
[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" "e69978a47c7467d81c5261eda10be60fc4b3513f8097f2cb026fceb3e68b1b81", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/object.rs:20:5
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 20 |     Nil,
[INFO] [stdout] 
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/code_gen.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         &mut self.emit_byte(ByteCode::Return(0), 0);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let _ = &mut self.emit_byte(ByteCode::Return(0), 0);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `zax` (bin "zax") generated 2 warnings
[INFO] [stderr] warning: `zax` (bin "zax" test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/zax-d385cc8ab844d7c1)
[INFO] [stderr]      Running tests/integration.rs (/opt/rustwide/target/debug/deps/integration-69b4f1906ff7385b)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test bad_add ... ok
[INFO] [stdout] test func_call_return_type ... ok
[INFO] [stdout] test func_call ... ok
[INFO] [stdout] test fib_implicit_return ... ok
[INFO] [stdout] test fib ... ok
[INFO] [stdout] test while_loop ... ok
[INFO] [stdout] test first_class_fun ... ok
[INFO] [stdout] test first_class_lambda ... ok
[INFO] [stdout] test block_expression ... ok
[INFO] [stdout] test func_call_type_param ... ok
[INFO] [stdout] test local_scope ... ok
[INFO] [stdout] test top_level_return ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e69978a47c7467d81c5261eda10be60fc4b3513f8097f2cb026fceb3e68b1b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e69978a47c7467d81c5261eda10be60fc4b3513f8097f2cb026fceb3e68b1b81", kill_on_drop: false }`
[INFO] [stdout] e69978a47c7467d81c5261eda10be60fc4b3513f8097f2cb026fceb3e68b1b81