[INFO] fetching crate zksnark 0.0.2...
[INFO] checking zksnark-0.0.2 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate zksnark 0.0.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate zksnark 0.0.2 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate zksnark 0.0.2
[INFO] finished tweaking crates.io crate zksnark 0.0.2
[INFO] tweaked toml for crates.io crate zksnark 0.0.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 01cb375ba77d7bee9e1f572fdb1d1e1ec6fb7c94330c358f0fbb27072cdce601
[INFO] running `"docker" "start" "-a" "01cb375ba77d7bee9e1f572fdb1d1e1ec6fb7c94330c358f0fbb27072cdce601"`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking itertools v0.6.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking bigint v4.4.1
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking bn v0.4.3
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking zksnark v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quickcheck v0.7.2
[INFO] [stderr] warning: function is never used: `chinese_remainder`
[INFO] [stderr]    --> src/field/mod.rs:274:1
[INFO] [stderr]     |
[INFO] [stderr] 274 | / fn chinese_remainder<T>(rems: &[T], moduli: &[T]) -> T
[INFO] [stderr] 275 | | where
[INFO] [stderr] 276 | |     T: Div<Output = T>
[INFO] [stderr] 277 | |         + Mul<Output = T>
[INFO] [stderr] ...   |
[INFO] [stderr] 295 | |         .fold(T::zero(), |acc, x| acc + x)
[INFO] [stderr] 296 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `return` value
[INFO] [stderr]    --> src/field/mod.rs:457:28
[INFO] [stderr]     |
[INFO] [stderr] 457 |                     return (degree == poly.degree());
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BitAnd`, `BitOr`, `BitXor`
[INFO] [stderr]  --> src/groth16/circuit/builder/tests.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::{BitAnd, BitOr, BitXor};
[INFO] [stderr]   |                ^^^^^^  ^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 32.62s
[INFO] running `"docker" "inspect" "01cb375ba77d7bee9e1f572fdb1d1e1ec6fb7c94330c358f0fbb27072cdce601"`
[INFO] running `"docker" "rm" "-f" "01cb375ba77d7bee9e1f572fdb1d1e1ec6fb7c94330c358f0fbb27072cdce601"`
[INFO] [stdout] 01cb375ba77d7bee9e1f572fdb1d1e1ec6fb7c94330c358f0fbb27072cdce601