[INFO] fetching crate phreak_engine 0.1.5...
[INFO] checking phreak_engine-0.1.5 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate phreak_engine 0.1.5 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate phreak_engine 0.1.5 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate phreak_engine 0.1.5
[INFO] finished tweaking crates.io crate phreak_engine 0.1.5
[INFO] tweaked toml for crates.io crate phreak_engine 0.1.5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80115563707f132bf154bcf02d1401fa03f6b2034aec0474eb62131d2a5ec2ad
[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" "80115563707f132bf154bcf02d1401fa03f6b2034aec0474eb62131d2a5ec2ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80115563707f132bf154bcf02d1401fa03f6b2034aec0474eb62131d2a5ec2ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80115563707f132bf154bcf02d1401fa03f6b2034aec0474eb62131d2a5ec2ad", kill_on_drop: false }`
[INFO] [stdout] 80115563707f132bf154bcf02d1401fa03f6b2034aec0474eb62131d2a5ec2ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] a010ebf48b69ea82d9c16dcf231b139ebdd44dbaf3a9622e9a6754c8ee0dc8b0
[INFO] running `Command { std: "docker" "start" "-a" "a010ebf48b69ea82d9c16dcf231b139ebdd44dbaf3a9622e9a6754c8ee0dc8b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking phreak_rules v0.1.5
[INFO] [stderr]     Checking generational-arena v0.2.8
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking tracing-core v0.1.14
[INFO] [stderr]     Checking generational-indextree v1.1.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling test-case v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking phreak_facts v0.1.5
[INFO] [stderr]     Checking simple_logger v1.6.0
[INFO] [stderr]     Checking phreak_engine v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1690:13
[INFO] [stdout]      |
[INFO] [stdout] 1690 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1696:13
[INFO] [stdout]      |
[INFO] [stdout] 1696 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:1698:13
[INFO] [stdout]      |
[INFO] [stdout] 1698 |         let p1 = p.build_production(n1, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:1723:13
[INFO] [stdout]      |
[INFO] [stdout] 1723 |         let p1 = p.build_production(r, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1736:13
[INFO] [stdout]      |
[INFO] [stdout] 1736 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1742:13
[INFO] [stdout]      |
[INFO] [stdout] 1742 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:1745:13
[INFO] [stdout]      |
[INFO] [stdout] 1745 |         let p1 = p.build_production(j1, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1764:13
[INFO] [stdout]      |
[INFO] [stdout] 1764 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1775:13
[INFO] [stdout]      |
[INFO] [stdout] 1775 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:1782:13
[INFO] [stdout]      |
[INFO] [stdout] 1782 |         let p1 = p.build_production(j2, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1814:13
[INFO] [stdout]      |
[INFO] [stdout] 1814 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1820:13
[INFO] [stdout]      |
[INFO] [stdout] 1820 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:1822:13
[INFO] [stdout]      |
[INFO] [stdout] 1822 |         let p1 = p.build_production(n1, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1854:13
[INFO] [stdout]      |
[INFO] [stdout] 1854 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1870:13
[INFO] [stdout]      |
[INFO] [stdout] 1870 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:1875:13
[INFO] [stdout]      |
[INFO] [stdout] 1875 |         let p1 = p.build_production(j2, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1907:13
[INFO] [stdout]      |
[INFO] [stdout] 1907 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1918:13
[INFO] [stdout]      |
[INFO] [stdout] 1918 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:1921:13
[INFO] [stdout]      |
[INFO] [stdout] 1921 |         let p1 = p.build_production(n2, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1969:13
[INFO] [stdout]      |
[INFO] [stdout] 1969 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:1975:13
[INFO] [stdout]      |
[INFO] [stdout] 1975 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:1987:13
[INFO] [stdout]      |
[INFO] [stdout] 1987 |         let p1 = p.build_production(n1, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2007:13
[INFO] [stdout]      |
[INFO] [stdout] 2007 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2018:13
[INFO] [stdout]      |
[INFO] [stdout] 2018 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:2040:13
[INFO] [stdout]      |
[INFO] [stdout] 2040 |         let p1 = p.build_production(n2, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2075:13
[INFO] [stdout]      |
[INFO] [stdout] 2075 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2086:13
[INFO] [stdout]      |
[INFO] [stdout] 2086 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:2100:13
[INFO] [stdout]      |
[INFO] [stdout] 2100 |         let p1 = p.build_production(n2, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2137:13
[INFO] [stdout]      |
[INFO] [stdout] 2137 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2143:13
[INFO] [stdout]      |
[INFO] [stdout] 2143 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:2158:13
[INFO] [stdout]      |
[INFO] [stdout] 2158 |         let p1 = p.build_production(n2, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2180:13
[INFO] [stdout]      |
[INFO] [stdout] 2180 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2191:13
[INFO] [stdout]      |
[INFO] [stdout] 2191 |         let cl = p.classes.get("Ball").unwrap();
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]     --> src/core.rs:2205:13
[INFO] [stdout]      |
[INFO] [stdout] 2205 |         let p1 = p.build_production(n2, Box::new(CountCallback { counter: counter1.clone() }));
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `counter1`
[INFO] [stdout]     --> src/core.rs:2238:13
[INFO] [stdout]      |
[INFO] [stdout] 2238 |         let counter1: Arc<Cell<usize>> = Arc::new(Cell::new(0));
[INFO] [stdout]      |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_counter1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]     --> src/core.rs:2240:13
[INFO] [stdout]      |
[INFO] [stdout] 2240 |         let r = p.root_node;
[INFO] [stdout]      |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cl`
[INFO] [stdout]     --> src/core.rs:2241:13
[INFO] [stdout]      |
[INFO] [stdout] 2241 |         let cl = p.build_or_share_classnode("Ball");
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a0`
[INFO] [stdout]     --> src/core.rs:2242:13
[INFO] [stdout]      |
[INFO] [stdout] 2242 |         let a0 = p.build_or_share_alphanode("Ball", WmeMatch::new(
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_a0`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] running `Command { std: "docker" "inspect" "a010ebf48b69ea82d9c16dcf231b139ebdd44dbaf3a9622e9a6754c8ee0dc8b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a010ebf48b69ea82d9c16dcf231b139ebdd44dbaf3a9622e9a6754c8ee0dc8b0", kill_on_drop: false }`
[INFO] [stdout] a010ebf48b69ea82d9c16dcf231b139ebdd44dbaf3a9622e9a6754c8ee0dc8b0
