[INFO] fetching crate snarkvm-circuit-types-field 0.16.12...
[INFO] checking snarkvm-circuit-types-field-0.16.12 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate snarkvm-circuit-types-field 0.16.12 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate snarkvm-circuit-types-field 0.16.12 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snarkvm-circuit-types-field 0.16.12
[INFO] finished tweaking crates.io crate snarkvm-circuit-types-field 0.16.12
[INFO] tweaked toml for crates.io crate snarkvm-circuit-types-field 0.16.12 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 146 packages
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded snarkvm-console-types-field v0.16.12
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bd0fb64a631da9f509cd96445ed9260852d5b5c4d2c14205427e7086e7d2107
[INFO] running `Command { std: "docker" "start" "-a" "7bd0fb64a631da9f509cd96445ed9260852d5b5c4d2c14205427e7086e7d2107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bd0fb64a631da9f509cd96445ed9260852d5b5c4d2c14205427e7086e7d2107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bd0fb64a631da9f509cd96445ed9260852d5b5c4d2c14205427e7086e7d2107", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "544d965bdbbf3cf23b46aeb2627c8f58558b975d7f6faf6dd55ba1809f74ca34", kill_on_drop: false }`
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[INFO] [stdout] warning: the item `CircuitType` is imported redundantly
[INFO] [stdout]   --> src/pow.rs:16:44
[INFO] [stdout]    |
[INFO] [stdout] 15 | use super::*;
[INFO] [stdout]    |     -------- the item `CircuitType` is already imported here
[INFO] [stdout] 16 | use snarkvm_circuit_environment::{Circuit, CircuitType};
[INFO] [stdout]    |                                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Circuit` is imported redundantly
[INFO] [stdout]    --> src/pow.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     use super::*;
[INFO] [stdout]     |         -------- the item `Circuit` is already imported here
[INFO] [stdout] 137 |     use snarkvm_circuit_environment::Circuit;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.30s
[INFO] running `Command { std: "docker" "inspect" "544d965bdbbf3cf23b46aeb2627c8f58558b975d7f6faf6dd55ba1809f74ca34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "544d965bdbbf3cf23b46aeb2627c8f58558b975d7f6faf6dd55ba1809f74ca34", kill_on_drop: false }`
[INFO] [stdout] 544d965bdbbf3cf23b46aeb2627c8f58558b975d7f6faf6dd55ba1809f74ca34