[INFO] fetching crate starknet-ff 0.3.4...
[INFO] checking starknet-ff-0.3.4 against try#8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f for pr-114559
[INFO] extracting crate starknet-ff 0.3.4 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate starknet-ff 0.3.4 on toolchain 8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate starknet-ff 0.3.4
[INFO] finished tweaking crates.io crate starknet-ff 0.3.4
[INFO] tweaked toml for crates.io crate starknet-ff 0.3.4 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "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" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13e9bfa1c9ed5241bc7b39a8e89ea5529d8cce3c7a8c305a35e378c0bb66fe3a
[INFO] running `Command { std: "docker" "start" "-a" "13e9bfa1c9ed5241bc7b39a8e89ea5529d8cce3c7a8c305a35e378c0bb66fe3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13e9bfa1c9ed5241bc7b39a8e89ea5529d8cce3c7a8c305a35e378c0bb66fe3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13e9bfa1c9ed5241bc7b39a8e89ea5529d8cce3c7a8c305a35e378c0bb66fe3a", kill_on_drop: false }`
[INFO] [stdout] 13e9bfa1c9ed5241bc7b39a8e89ea5529d8cce3c7a8c305a35e378c0bb66fe3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e0e0a60e4fc5b39e63b6fc63b15b7c938311620119f94292dd1bddf72cfc642
[INFO] running `Command { std: "docker" "start" "-a" "2e0e0a60e4fc5b39e63b6fc63b15b7c938311620119f94292dd1bddf72cfc642", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling serde v1.0.183
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking crypto-bigint v0.5.2
[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 zeroize_derive v1.4.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-asm v0.4.2
[INFO] [stderr]    Compiling ark-ff-macros v0.4.2
[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" "2e0e0a60e4fc5b39e63b6fc63b15b7c938311620119f94292dd1bddf72cfc642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0e0a60e4fc5b39e63b6fc63b15b7c938311620119f94292dd1bddf72cfc642", kill_on_drop: false }`
[INFO] [stdout] 2e0e0a60e4fc5b39e63b6fc63b15b7c938311620119f94292dd1bddf72cfc642
