[INFO] fetching crate arecibo 0.1.1...
[INFO] testing arecibo-0.1.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate arecibo 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] removed /workspace/builds/worker-2-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate arecibo 0.1.1
[INFO] finished tweaking crates.io crate arecibo 0.1.1
[INFO] tweaked toml for crates.io crate arecibo 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate arecibo 0.1.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate arecibo 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d33c9ad35fc6f13bd1b35b90255b27cefbbb51189f1eb4c30ba12f35fa13330
[INFO] running `Command { std: "docker" "start" "-a" "6d33c9ad35fc6f13bd1b35b90255b27cefbbb51189f1eb4c30ba12f35fa13330", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d33c9ad35fc6f13bd1b35b90255b27cefbbb51189f1eb4c30ba12f35fa13330", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d33c9ad35fc6f13bd1b35b90255b27cefbbb51189f1eb4c30ba12f35fa13330", kill_on_drop: false }`
[INFO] [stdout] 6d33c9ad35fc6f13bd1b35b90255b27cefbbb51189f1eb4c30ba12f35fa13330
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67f359da1145c45892df82c161fa79493ee548b99b6ec78e1637599bd5015360
[INFO] running `Command { std: "docker" "start" "-a" "67f359da1145c45892df82c161fa79493ee548b99b6ec78e1637599bd5015360", kill_on_drop: false }`
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[INFO] [stderr]    Compiling arecibo v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/spartan/math.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 |       .map(|shift_amount| ((self & (1 << (num_bits - shift_amount - 1))) > 0))
[INFO] [stdout]    |                           ^                                                 ^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:4:3
[INFO] [stdout]    |
[INFO] [stdout]  4 |   unused,
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_parens)]` implied by `#[deny(unused)]`
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 17 -       .map(|shift_amount| ((self & (1 << (num_bits - shift_amount - 1))) > 0))
[INFO] [stdout] 17 +       .map(|shift_amount| (self & (1 << (num_bits - shift_amount - 1))) > 0 )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `zip_with`
[INFO] [stdout]   --> src/spartan/ppsnark.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 |   zip_with, Commitment, CommitmentKey, CompressedCommitment,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]   --> src/bellpepper/test_shape_cs.rs:19:14
[INFO] [stdout]    |
[INFO] [stdout] 19 |   Constraint(usize),
[INFO] [stdout]    |   ---------- ^^^^^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NamedObject` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(unused)]`
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 19 -   Constraint(usize),
[INFO] [stdout] 19 +   Constraint(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]   --> src/bellpepper/test_shape_cs.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 |   Var(Variable),
[INFO] [stdout]    |   --- ^^^^^^^^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NamedObject` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 20 -   Var(Variable),
[INFO] [stdout] 20 +   Var(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: method `grab_mut` is never used
[INFO] [stdout]  --> src/gadgets/nonnative/mod.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait OptionExt<T> {
[INFO] [stdout]   |       --------- method in this trait
[INFO] [stdout] 8 |   fn grab(&self) -> Result<&T, SynthesisError>;
[INFO] [stdout] 9 |   fn grab_mut(&mut self) -> Result<&mut T, SynthesisError>;
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `value` is never read
[INFO] [stdout]   --> src/gadgets/nonnative/util.rs:18:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Bit<Scalar: PrimeField> {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |   pub value: Option<bool>,
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Bit` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: method `pow2` is never used
[INFO] [stdout]  --> src/spartan/math.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Math {
[INFO] [stdout]   |           ---- method in this trait
[INFO] [stdout] 2 |   fn pow2(self) -> usize;
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arecibo` (lib) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "67f359da1145c45892df82c161fa79493ee548b99b6ec78e1637599bd5015360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67f359da1145c45892df82c161fa79493ee548b99b6ec78e1637599bd5015360", kill_on_drop: false }`
[INFO] [stdout] 67f359da1145c45892df82c161fa79493ee548b99b6ec78e1637599bd5015360