[INFO] updating cached repository https://github.com/JanKaul/cek-machine
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fcd14fde5b3c75bd19744ce68c9968053012961d
[INFO] testing JanKaul/cek-machine against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJanKaul%2Fcek-machine" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JanKaul/cek-machine on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/JanKaul/cek-machine
[INFO] finished tweaking git repo https://github.com/JanKaul/cek-machine
[INFO] tweaked toml for git repo https://github.com/JanKaul/cek-machine written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/JanKaul/cek-machine already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 6ff61de64bb730b95a8db94f7a323d79ce231029d7fcf92bb2388f013ed03283
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "6ff61de64bb730b95a8db94f7a323d79ce231029d7fcf92bb2388f013ed03283"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cek_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `e1`
[INFO] [stderr]   --> src/main.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let e1 = Box::new(Exp::Lam(String::from("f"),Box::new(Exp::App(Box::new(Exp::Var(String::from("f"))),Box::new(Exp::Var(String::from("f")))))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e2`
[INFO] [stderr]   --> src/main.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let e2 = Box::new(Exp::Lam(String::from("y"),Box::new(Exp::Var(String::from("y")))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e3`
[INFO] [stderr]   --> src/main.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let e3 = Box::new(Exp::Lam(String::from("f"),Box::new(Exp::App(Box::new(Exp::Var(String::from("f"))),Box::new(Exp::Int(1))))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e4`
[INFO] [stderr]   --> src/main.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let e4 = Box::new(Exp::App(Box::new(Exp::Lam(String::from("x"),Box::new(Exp::Lam(String::from("y"),Box::new(Exp::Var(String::from("x"))))))),Box::new(Exp::Int(2))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e4`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Let(Box<Exp>,Box<Exp>,Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `If`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     If(Box<Exp>,Box<Exp>,Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "6ff61de64bb730b95a8db94f7a323d79ce231029d7fcf92bb2388f013ed03283"`
[INFO] running `"docker" "rm" "-f" "6ff61de64bb730b95a8db94f7a323d79ce231029d7fcf92bb2388f013ed03283"`
[INFO] [stdout] 6ff61de64bb730b95a8db94f7a323d79ce231029d7fcf92bb2388f013ed03283
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e7278bdaa133d99c0df8c178898b3772a3b33adcf6e9e583e37f871ccac95beb
[INFO] running `"docker" "start" "-a" "e7278bdaa133d99c0df8c178898b3772a3b33adcf6e9e583e37f871ccac95beb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cek_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `e1`
[INFO] [stderr]   --> src/main.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let e1 = Box::new(Exp::Lam(String::from("f"),Box::new(Exp::App(Box::new(Exp::Var(String::from("f"))),Box::new(Exp::Var(String::from("f")))))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e2`
[INFO] [stderr]   --> src/main.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let e2 = Box::new(Exp::Lam(String::from("y"),Box::new(Exp::Var(String::from("y")))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e3`
[INFO] [stderr]   --> src/main.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let e3 = Box::new(Exp::Lam(String::from("f"),Box::new(Exp::App(Box::new(Exp::Var(String::from("f"))),Box::new(Exp::Int(1))))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e4`
[INFO] [stderr]   --> src/main.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let e4 = Box::new(Exp::App(Box::new(Exp::Lam(String::from("x"),Box::new(Exp::Lam(String::from("y"),Box::new(Exp::Var(String::from("x"))))))),Box::new(Exp::Int(2))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e4`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Let(Box<Exp>,Box<Exp>,Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `If`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     If(Box<Exp>,Box<Exp>,Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "e7278bdaa133d99c0df8c178898b3772a3b33adcf6e9e583e37f871ccac95beb"`
[INFO] running `"docker" "rm" "-f" "e7278bdaa133d99c0df8c178898b3772a3b33adcf6e9e583e37f871ccac95beb"`
[INFO] [stdout] e7278bdaa133d99c0df8c178898b3772a3b33adcf6e9e583e37f871ccac95beb
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0754103cbc30b8f62d2074d280d2b595b1532e1cf70c872d36e51b84577de534
[INFO] running `"docker" "start" "-a" "0754103cbc30b8f62d2074d280d2b595b1532e1cf70c872d36e51b84577de534"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `e1`
[INFO] [stderr]   --> src/main.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let e1 = Box::new(Exp::Lam(String::from("f"),Box::new(Exp::App(Box::new(Exp::Var(String::from("f"))),Box::new(Exp::Var(String::from("f")))))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e2`
[INFO] [stderr]   --> src/main.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let e2 = Box::new(Exp::Lam(String::from("y"),Box::new(Exp::Var(String::from("y")))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e3`
[INFO] [stderr]   --> src/main.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let e3 = Box::new(Exp::Lam(String::from("f"),Box::new(Exp::App(Box::new(Exp::Var(String::from("f"))),Box::new(Exp::Int(1))))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e4`
[INFO] [stderr]   --> src/main.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let e4 = Box::new(Exp::App(Box::new(Exp::Lam(String::from("x"),Box::new(Exp::Lam(String::from("y"),Box::new(Exp::Var(String::from("x"))))))),Box::new(Exp::Int(2))));
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_e4`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Let(Box<Exp>,Box<Exp>,Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `If`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     If(Box<Exp>,Box<Exp>,Box<Exp>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cek_machine-cefdda0df665e052
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0754103cbc30b8f62d2074d280d2b595b1532e1cf70c872d36e51b84577de534"`
[INFO] running `"docker" "rm" "-f" "0754103cbc30b8f62d2074d280d2b595b1532e1cf70c872d36e51b84577de534"`
[INFO] [stdout] 0754103cbc30b8f62d2074d280d2b595b1532e1cf70c872d36e51b84577de534