[INFO] fetching crate nugget_bls 0.0.1...
[INFO] checking nugget_bls-0.0.1 against try#4001eed09e19538fd1a219411bb07c1bce2bbf55 for pr-114559-1
[INFO] extracting crate nugget_bls 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate nugget_bls 0.0.1 on toolchain 4001eed09e19538fd1a219411bb07c1bce2bbf55
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4001eed09e19538fd1a219411bb07c1bce2bbf55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nugget_bls 0.0.1
[INFO] finished tweaking crates.io crate nugget_bls 0.0.1
[INFO] tweaked toml for crates.io crate nugget_bls 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4001eed09e19538fd1a219411bb07c1bce2bbf55" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4001eed09e19538fd1a219411bb07c1bce2bbf55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:84cb280c7acaf12c1f874411053406050a24f846e52f817d4d9e64bcbe5ce959" "/opt/rustwide/cargo-home/bin/cargo" "+4001eed09e19538fd1a219411bb07c1bce2bbf55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 281194d56a2e178ec6e23625a3859202be6c548f319ab58d5080a4f9f7c579e9
[INFO] running `Command { std: "docker" "start" "-a" "281194d56a2e178ec6e23625a3859202be6c548f319ab58d5080a4f9f7c579e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "281194d56a2e178ec6e23625a3859202be6c548f319ab58d5080a4f9f7c579e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "281194d56a2e178ec6e23625a3859202be6c548f319ab58d5080a4f9f7c579e9", kill_on_drop: false }`
[INFO] [stdout] 281194d56a2e178ec6e23625a3859202be6c548f319ab58d5080a4f9f7c579e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:84cb280c7acaf12c1f874411053406050a24f846e52f817d4d9e64bcbe5ce959" "/opt/rustwide/cargo-home/bin/cargo" "+4001eed09e19538fd1a219411bb07c1bce2bbf55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 785f44c71b2202647274858743053d7e1cdab0eaefe1cee763e3617ed59cf3e6
[INFO] running `Command { std: "docker" "start" "-a" "785f44c71b2202647274858743053d7e1cdab0eaefe1cee763e3617ed59cf3e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ark-std v0.4.0
[INFO] [stderr]     Checking ark-serialize v0.4.2
[INFO] [stderr]    Compiling ark-ff-macros v0.4.2
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]     Checking ark-ff v0.4.2
[INFO] [stdout] error[E0658]: cannot borrow here, since the borrowed element may contain interior mutability
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/ark-ff-0.4.2/src/fields/models/fp/montgomery_backend.rs:719:13
[INFO] [stdout]     |
[INFO] [stdout] 719 |         if !self.const_is_zero() {
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #80384 <https://github.com/rust-lang/rust/issues/80384> for more information
[INFO] [stdout]     = help: add `#![feature(const_refs_to_cell)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: cannot borrow here, since the borrowed element may contain interior mutability
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/ark-ff-0.4.2/src/fields/models/fp/montgomery_backend.rs:803:13
[INFO] [stdout]     |
[INFO] [stdout] 803 |         if !self.const_is_valid() {
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #80384 <https://github.com/rust-lang/rust/issues/80384> for more information
[INFO] [stdout]     = help: add `#![feature(const_refs_to_cell)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: cannot borrow here, since the borrowed element may contain interior mutability
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/ark-ff-0.4.2/src/fields/models/fp/montgomery_backend.rs:811:22
[INFO] [stdout]     |
[INFO] [stdout] 811 |         if carry || !self.const_is_valid() {
[INFO] [stdout]     |                      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #80384 <https://github.com/rust-lang/rust/issues/80384> for more information
[INFO] [stdout]     = help: add `#![feature(const_refs_to_cell)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ark-ff` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "785f44c71b2202647274858743053d7e1cdab0eaefe1cee763e3617ed59cf3e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "785f44c71b2202647274858743053d7e1cdab0eaefe1cee763e3617ed59cf3e6", kill_on_drop: false }`
[INFO] [stdout] 785f44c71b2202647274858743053d7e1cdab0eaefe1cee763e3617ed59cf3e6