[INFO] cloning repository https://github.com/xJonathanLEI/ark-ff-inverse-issue
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xJonathanLEI/ark-ff-inverse-issue" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxJonathanLEI%2Fark-ff-inverse-issue", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxJonathanLEI%2Fark-ff-inverse-issue'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 175bf6bb67a6b53addfc4b4adfcad1905260516f
[INFO] checking xJonathanLEI/ark-ff-inverse-issue against try#4001eed09e19538fd1a219411bb07c1bce2bbf55 for pr-114559-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxJonathanLEI%2Fark-ff-inverse-issue" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xJonathanLEI/ark-ff-inverse-issue 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 git repo https://github.com/xJonathanLEI/ark-ff-inverse-issue
[INFO] finished tweaking git repo https://github.com/xJonathanLEI/ark-ff-inverse-issue
[INFO] tweaked toml for git repo https://github.com/xJonathanLEI/ark-ff-inverse-issue written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xJonathanLEI/ark-ff-inverse-issue 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" "+4001eed09e19538fd1a219411bb07c1bce2bbf55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e9d5fedd871016e5075c23b48bb670875dd9e484d9a142180fd6db03207c0485
[INFO] running `Command { std: "docker" "start" "-a" "e9d5fedd871016e5075c23b48bb670875dd9e484d9a142180fd6db03207c0485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9d5fedd871016e5075c23b48bb670875dd9e484d9a142180fd6db03207c0485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9d5fedd871016e5075c23b48bb670875dd9e484d9a142180fd6db03207c0485", kill_on_drop: false }`
[INFO] [stdout] e9d5fedd871016e5075c23b48bb670875dd9e484d9a142180fd6db03207c0485
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a6e9249f75afe98774ee6cbd9fac49a8cf2ab2d5cb12f29b0f7ad91c9fa54e08
[INFO] running `Command { std: "docker" "start" "-a" "a6e9249f75afe98774ee6cbd9fac49a8cf2ab2d5cb12f29b0f7ad91c9fa54e08", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling semver v1.0.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling ark-ff v0.3.0 (https://github.com/arkworks-rs/algebra#12fdeb06)
[INFO] [stderr]     Checking ark-std v0.3.0
[INFO] [stderr]     Checking crypto-common v0.1.1
[INFO] [stderr]     Checking digest v0.10.1
[INFO] [stderr]     Checking ark-serialize v0.3.0 (https://github.com/arkworks-rs/algebra#12fdeb06)
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling zeroize_derive v1.3.1
[INFO] [stderr]    Compiling ark-ff-asm v0.3.0 (https://github.com/arkworks-rs/algebra#12fdeb06)
[INFO] [stderr]    Compiling ark-ff-macros v0.3.0 (https://github.com/arkworks-rs/algebra#12fdeb06)
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking zeroize v1.5.2
[INFO] [stdout] error[E0658]: cannot borrow here, since the borrowed element may contain interior mutability
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/algebra-7e23afa68841b66e/12fdeb0/ff/src/fields/models/fp/montgomery_backend.rs:445:13
[INFO] [stdout]     |
[INFO] [stdout] 445 |         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/git/checkouts/algebra-7e23afa68841b66e/12fdeb0/ff/src/fields/models/fp/montgomery_backend.rs:483:12
[INFO] [stdout]     |
[INFO] [stdout] 483 |         if r.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/git/checkouts/algebra-7e23afa68841b66e/12fdeb0/ff/src/fields/models/fp/montgomery_backend.rs:552:13
[INFO] [stdout]     |
[INFO] [stdout] 552 |         if !self.const_is_valid(modulus) {
[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" "a6e9249f75afe98774ee6cbd9fac49a8cf2ab2d5cb12f29b0f7ad91c9fa54e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6e9249f75afe98774ee6cbd9fac49a8cf2ab2d5cb12f29b0f7ad91c9fa54e08", kill_on_drop: false }`
[INFO] [stdout] a6e9249f75afe98774ee6cbd9fac49a8cf2ab2d5cb12f29b0f7ad91c9fa54e08