[INFO] fetching crate snarkvm-gadgets 0.2.1...
[INFO] checking snarkvm-gadgets-0.2.1 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate snarkvm-gadgets 0.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate snarkvm-gadgets 0.2.1 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snarkvm-gadgets 0.2.1
[INFO] finished tweaking crates.io crate snarkvm-gadgets 0.2.1
[INFO] tweaked toml for crates.io crate snarkvm-gadgets 0.2.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "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" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "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-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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "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] 849156c727ef1d3d3b8fab4b5c341dbf60af30806be99f05d8e73f7f4697e00b
[INFO] running `Command { std: "docker" "start" "-a" "849156c727ef1d3d3b8fab4b5c341dbf60af30806be99f05d8e73f7f4697e00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "849156c727ef1d3d3b8fab4b5c341dbf60af30806be99f05d8e73f7f4697e00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "849156c727ef1d3d3b8fab4b5c341dbf60af30806be99f05d8e73f7f4697e00b", kill_on_drop: false }`
[INFO] [stdout] 849156c727ef1d3d3b8fab4b5c341dbf60af30806be99f05d8e73f7f4697e00b
[INFO] running `Command { std: "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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b72aa65c8ee6866567f8f3f24de73c796f45d545da811be798cc3766a4168bb3
[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" "b72aa65c8ee6866567f8f3f24de73c796f45d545da811be798cc3766a4168bb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking snarkvm-profiler v0.2.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking sha2 v0.9.3
[INFO] [stderr]     Checking blake2 v0.9.1
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking bincode v1.3.2
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling snarkvm-derives v0.2.1
[INFO] [stderr]     Checking snarkvm-utilities v0.2.1
[INFO] [stderr]     Checking snarkvm-fields v0.2.1
[INFO] [stderr]     Checking snarkvm-curves v0.2.1
[INFO] [stderr]     Checking snarkvm-r1cs v0.2.1
[INFO] [stderr]     Checking snarkvm-algorithms v0.2.1
[INFO] [stderr]     Checking snarkvm-gadgets v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `rand::thread_rng`
[INFO] [stdout]   --> src/algorithms/commitment/tests.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | use rand::{thread_rng, Rng};
[INFO] [stdout]    |            ^^^^^^^^^^ no `thread_rng` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::thread_rng`
[INFO] [stdout]   --> src/algorithms/crh/tests.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | use rand::{thread_rng, Rng};
[INFO] [stdout]    |            ^^^^^^^^^^ no `thread_rng` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::thread_rng`
[INFO] [stdout]   --> src/algorithms/signature/tests.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | use rand::{thread_rng, Rng};
[INFO] [stdout]    |            ^^^^^^^^^^ no `thread_rng` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::thread_rng`
[INFO] [stdout]   --> src/algorithms/snark/tests.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | use rand::{thread_rng, Rng};
[INFO] [stdout]    |            ^^^^^^^^^^ no `thread_rng` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::thread_rng`
[INFO] [stdout]   --> src/curves/templates/twisted_edwards/test.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use rand::thread_rng;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ no `thread_rng` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::thread_rng`
[INFO] [stdout]   --> src/curves/tests_field.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     thread_rng,
[INFO] [stdout]    |     ^^^^^^^^^^ no `thread_rng` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]    --> src/algorithms/merkle_tree/tests.rs:144:32
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let nonce: [u8; 4] = rand::random();
[INFO] [stdout]     |                                ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]   --> src/curves/bls12_377.rs:72:27
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let a: G1 = rand::random();
[INFO] [stdout]    |                           ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]   --> src/curves/bls12_377.rs:73:27
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let b: G1 = rand::random();
[INFO] [stdout]    |                           ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]   --> src/curves/bls12_377.rs:94:27
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let a: G2 = rand::random();
[INFO] [stdout]    |                           ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]   --> src/curves/bls12_377.rs:95:27
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let b: G2 = rand::random();
[INFO] [stdout]    |                           ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]    --> src/curves/bls12_377.rs:181:27
[INFO] [stdout]     |
[INFO] [stdout] 181 |         let a: G2 = rand::random();
[INFO] [stdout]     |                           ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]    --> src/curves/bls12_377.rs:182:27
[INFO] [stdout]     |
[INFO] [stdout] 182 |         let b: G2 = rand::random();
[INFO] [stdout]     |                           ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]   --> src/curves/tests_group.rs:71:38
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let a: EdwardsProjective = rand::random();
[INFO] [stdout]    |                                      ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]   --> src/curves/tests_group.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let b: EdwardsProjective = rand::random();
[INFO] [stdout]    |                                      ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]   --> src/curves/templates/twisted_edwards/test.rs:78:32
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let a: TEAffine<P> = rand::random();
[INFO] [stdout]    |                                ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `random` in crate `rand`
[INFO] [stdout]   --> src/curves/templates/twisted_edwards/test.rs:79:32
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let b: TEAffine<P> = rand::random();
[INFO] [stdout]    |                                ^^^^^^ not found in `rand`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `Rng`
[INFO] [stdout]   --> src/algorithms/commitment/tests.rs:38:24
[INFO] [stdout]    |
[INFO] [stdout] 38 | use rand::{thread_rng, Rng};
[INFO] [stdout]    |                        ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     unused_imports,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `Rng`
[INFO] [stdout]   --> src/algorithms/signature/tests.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 | use rand::{thread_rng, Rng};
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `Rng`
[INFO] [stdout]   --> src/algorithms/snark/tests.rs:34:24
[INFO] [stdout]    |
[INFO] [stdout] 34 | use rand::{thread_rng, Rng};
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 20 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `snarkvm-gadgets`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/traits/utilities/boolean.rs:649:9
[INFO] [stdout]     |
[INFO] [stdout] 649 |         mut cs: CS,
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b72aa65c8ee6866567f8f3f24de73c796f45d545da811be798cc3766a4168bb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b72aa65c8ee6866567f8f3f24de73c796f45d545da811be798cc3766a4168bb3", kill_on_drop: false }`
[INFO] [stdout] b72aa65c8ee6866567f8f3f24de73c796f45d545da811be798cc3766a4168bb3