[INFO] cloning repository https://github.com/JacobEberhardt/ZoKrates
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JacobEberhardt/ZoKrates" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobEberhardt%2FZoKrates", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobEberhardt%2FZoKrates'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9db8818fe5510397244f78e6a1d8a0ede42c32ca
[INFO] testing JacobEberhardt/ZoKrates against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobEberhardt%2FZoKrates" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JacobEberhardt/ZoKrates on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/rust-toolchain
[INFO] removed /workspace/builds/worker-7/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/JacobEberhardt/ZoKrates
[INFO] finished tweaking git repo https://github.com/JacobEberhardt/ZoKrates
[INFO] tweaked toml for git repo https://github.com/JacobEberhardt/ZoKrates written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/JacobEberhardt/ZoKrates already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46e38bd3f27c9346621579cb70d59787ab2cedf7893ea3355c6e2dd7d81a5fda
[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" "46e38bd3f27c9346621579cb70d59787ab2cedf7893ea3355c6e2dd7d81a5fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46e38bd3f27c9346621579cb70d59787ab2cedf7893ea3355c6e2dd7d81a5fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46e38bd3f27c9346621579cb70d59787ab2cedf7893ea3355c6e2dd7d81a5fda", kill_on_drop: false }`
[INFO] [stdout] 46e38bd3f27c9346621579cb70d59787ab2cedf7893ea3355c6e2dd7d81a5fda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", 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] 4d53d2ec4c792405a06956e03af04078eb817c374d1686fddfe2b21b49cee869
[INFO] running `Command { std: "docker" "start" "-a" "4d53d2ec4c792405a06956e03af04078eb817c374d1686fddfe2b21b49cee869", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling zokrates_core v0.6.6 (/opt/rustwide/workdir/zokrates_core)
[INFO] [stderr]    Compiling zokrates_common v0.1.0 (/opt/rustwide/workdir/zokrates_common)
[INFO] [stderr]    Compiling reduce v0.1.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling zokrates_test_derive v0.0.1 (/opt/rustwide/workdir/zokrates_test_derive)
[INFO] [stderr]    Compiling zokrates_cli v0.7.6 (/opt/rustwide/workdir/zokrates_cli)
[INFO] [stderr]    Compiling from-pest v0.3.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling blake2-rfc_bellman_edition v0.0.1
[INFO] [stderr]    Compiling zokrates_fs_resolver v0.5.2 (/opt/rustwide/workdir/zokrates_fs_resolver)
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling zokrates_stdlib v0.2.4 (/opt/rustwide/workdir/zokrates_stdlib)
[INFO] [stderr]    Compiling zokrates_core_test v0.2.4 (/opt/rustwide/workdir/zokrates_core_test)
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling ark-serialize-derive v0.2.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-asm v0.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling ff_ce v0.9.0
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling blake2 v0.9.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling bincode v0.8.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling addr2line v0.15.2
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling zeroize_derive v1.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling ark-std v0.2.0
[INFO] [stderr]    Compiling ark-serialize v0.2.0
[INFO] [stderr]    Compiling ark-ff v0.2.0
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling ff_derive_ce v0.8.0
[INFO] [stderr]    Compiling zeroize v1.3.0
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling ark-ff-macros v0.2.0
[INFO] [stderr]    Compiling zokrates_parser v0.2.4 (/opt/rustwide/workdir/zokrates_parser)
[INFO] [stderr]    Compiling futures-executor v0.3.15
[INFO] [stderr]    Compiling single v1.0.0
[INFO] [stderr]    Compiling pest-ast v0.3.3
[INFO] [stderr]    Compiling futures v0.3.15
[INFO] [stderr]    Compiling ff_ce v0.10.3
[INFO] [stderr]    Compiling pairing_ce v0.21.1
[INFO] [stderr]    Compiling bellman_ce v0.3.5
[INFO] [stderr]    Compiling zokrates_pest_ast v0.2.3 (/opt/rustwide/workdir/zokrates_pest_ast)
[INFO] [stderr]    Compiling sapling-crypto_ce v0.1.3
[INFO] [stderr]    Compiling ark-ec v0.2.0
[INFO] [stderr]    Compiling ark-relations v0.2.0
[INFO] [stderr]    Compiling ark-poly v0.2.0
[INFO] [stderr]    Compiling ark-snark v0.2.0
[INFO] [stderr]    Compiling ark-r1cs-std v0.2.0
[INFO] [stderr]    Compiling ark-bn254 v0.2.0
[INFO] [stderr]    Compiling ark-poly-commit v0.2.0
[INFO] [stderr]    Compiling ark-marlin v0.2.0
[INFO] [stderr]    Compiling ark-bls12-377 v0.2.0
[INFO] [stderr]    Compiling ark-nonnative-field v0.2.0
[INFO] [stderr]    Compiling ark-bw6-761 v0.2.0
[INFO] [stderr]    Compiling zokrates_field v0.4.0 (/opt/rustwide/workdir/zokrates_field)
[INFO] [stderr]    Compiling ark-crypto-primitives v0.2.0
[INFO] [stderr]    Compiling ark-gm17 v0.2.0
[INFO] [stderr]    Compiling zokrates_embed v0.1.4 (/opt/rustwide/workdir/zokrates_embed)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> zokrates_core/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns, box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zokrates_core` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4d53d2ec4c792405a06956e03af04078eb817c374d1686fddfe2b21b49cee869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d53d2ec4c792405a06956e03af04078eb817c374d1686fddfe2b21b49cee869", kill_on_drop: false }`
[INFO] [stdout] 4d53d2ec4c792405a06956e03af04078eb817c374d1686fddfe2b21b49cee869