[INFO] fetching crate zcash_proofs 0.4.0...
[INFO] testing zcash_proofs-0.4.0 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate zcash_proofs 0.4.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate zcash_proofs 0.4.0 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zcash_proofs 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate zcash_proofs 0.4.0
[INFO] tweaked toml for crates.io crate zcash_proofs 0.4.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate zcash_proofs 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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] 4cd11f37fa0a0afb71e412e3a6fc7ad103182d692695b67cb278522749b768da
[INFO] running `Command { std: "docker" "start" "-a" "4cd11f37fa0a0afb71e412e3a6fc7ad103182d692695b67cb278522749b768da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cd11f37fa0a0afb71e412e3a6fc7ad103182d692695b67cb278522749b768da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cd11f37fa0a0afb71e412e3a6fc7ad103182d692695b67cb278522749b768da", kill_on_drop: false }`
[INFO] [stdout] 4cd11f37fa0a0afb71e412e3a6fc7ad103182d692695b67cb278522749b768da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 009428b33e234a71f53274fa4495f112a3a769bf3fbe59d60fe530ee9a911c1c
[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" "009428b33e234a71f53274fa4495f112a3a769bf3fbe59d60fe530ee9a911c1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling funty v1.0.1
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling block-padding v0.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling crypto_api v0.2.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling crypto_api_chachapoly v0.4.3
[INFO] [stderr]    Compiling block-cipher v0.8.0
[INFO] [stderr]    Compiling block-modes v0.6.1
[INFO] [stderr]    Compiling blake2s_simd v0.5.10
[INFO] [stderr]    Compiling blake2b_simd v0.5.10
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling bitvec v0.18.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling aes-soft v0.5.0
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling equihash v0.1.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling aes v0.5.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling directories v3.0.1
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling ff v0.8.0
[INFO] [stderr]    Compiling group v0.8.0
[INFO] [stderr]    Compiling pairing v0.18.0
[INFO] [stderr]    Compiling bls12_381 v0.3.1
[INFO] [stderr]    Compiling bellman v0.8.0
[INFO] [stderr]    Compiling fpe v0.3.1
[INFO] [stderr]    Compiling jubjub v0.5.1
[INFO] [stdout] error[E0277]: cannot multiply-assign `<E as Engine>::Fr` by `&&<E as Engine>::Fr`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bellman-0.8.0/src/groth16/generator.rs:401:39
[INFO] [stdout]     |
[INFO] [stdout] 401 |                         at.mul_assign(&beta);
[INFO] [stdout]     |                                       ^^^^^ no implementation for `<E as Engine>::Fr *= &&<E as Engine>::Fr`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `MulAssign<&&<E as Engine>::Fr>` is not implemented for `<E as Engine>::Fr`
[INFO] [stdout] help: consider further restricting the associated type
[INFO] [stdout]     |
[INFO] [stdout] 331 |     ) where <E as Engine>::Fr: MulAssign<&&<E as Engine>::Fr> {
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: cannot multiply-assign `<E as Engine>::Fr` by `&&<E as Engine>::Fr`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bellman-0.8.0/src/groth16/generator.rs:402:39
[INFO] [stdout]     |
[INFO] [stdout] 402 |                         bt.mul_assign(&alpha);
[INFO] [stdout]     |                                       ^^^^^^ no implementation for `<E as Engine>::Fr *= &&<E as Engine>::Fr`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `MulAssign<&&<E as Engine>::Fr>` is not implemented for `<E as Engine>::Fr`
[INFO] [stdout] help: consider further restricting the associated type
[INFO] [stdout]     |
[INFO] [stdout] 331 |     ) where <E as Engine>::Fr: MulAssign<&&<E as Engine>::Fr> {
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bellman`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "009428b33e234a71f53274fa4495f112a3a769bf3fbe59d60fe530ee9a911c1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "009428b33e234a71f53274fa4495f112a3a769bf3fbe59d60fe530ee9a911c1c", kill_on_drop: false }`
[INFO] [stdout] 009428b33e234a71f53274fa4495f112a3a769bf3fbe59d60fe530ee9a911c1c