[INFO] fetching crate plonkwasm 0.2.0...
[INFO] fixing plonkwasm-0.2.0 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] extracting crate plonkwasm 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate plonkwasm 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate plonkwasm 0.2.0
[INFO] tweaked toml for crates.io crate plonkwasm 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate plonkwasm 0.2.0 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate plonkwasm 0.2.0 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dusk-bytes v0.1.7
[INFO] [stderr]   Downloaded msgpacker-derive v0.3.2
[INFO] [stderr]   Downloaded msgpacker v0.4.8
[INFO] [stderr]   Downloaded dusk-jubjub v0.15.2
[INFO] [stderr]   Downloaded derive-hex v0.1.2
[INFO] [stderr]   Downloaded dusk-curves v0.2.0
[INFO] [stderr]   Downloaded dusk-plonk v0.23.0
[INFO] [stderr]   Downloaded dusk-bls12_381 v0.14.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] baca75cc63c8dae42de0bf6bb9af1f3057506ac44c257ffaf78b08ec13da8f4b
[INFO] running `Command { std: "docker" "start" "baca75cc63c8dae42de0bf6bb9af1f3057506ac44c257ffaf78b08ec13da8f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "baca75cc63c8dae42de0bf6bb9af1f3057506ac44c257ffaf78b08ec13da8f4b" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baca75cc63c8dae42de0bf6bb9af1f3057506ac44c257ffaf78b08ec13da8f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "baca75cc63c8dae42de0bf6bb9af1f3057506ac44c257ffaf78b08ec13da8f4b" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking typenum v1.20.0
[INFO] [stderr]    Compiling zerocopy v0.8.49
[INFO] [stderr]     Checking ff v0.13.1
[INFO] [stderr]     Checking blake2b_simd v1.0.3
[INFO] [stderr]     Checking ahash v0.4.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking miniz_oxide v0.7.4
[INFO] [stderr]    Compiling zeroize_derive v1.4.3
[INFO] [stderr]    Compiling msgpacker-derive v0.3.2
[INFO] [stderr]     Checking serde_json v1.0.150
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]     Checking msgpacker v0.4.8
[INFO] [stderr]     Checking merlin v3.0.0
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]    Compiling derive-hex v0.1.2
[INFO] [stderr]     Checking dusk-bytes v0.1.7
[INFO] [stderr]     Checking dusk-bls12_381 v0.14.2
[INFO] [stderr]     Checking dusk-curves v0.2.0
[INFO] [stdout] error: no backend selected: enable either 'bls-backend-dusk' (default) or 'bls-backend-blst'
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/dusk-curves-0.2.0/src/bls12_381.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | / compile_error!(
[INFO] [stdout] 27 | |     "no backend selected: enable either 'bls-backend-dusk' (default) or 'bls-backend-blst'"
[INFO] [stdout] 28 | | );
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `backend`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/dusk-curves-0.2.0/src/bls12_381.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub use backend::{
[INFO] [stdout]    |         ^^^^^^^ use of unresolved module or unlinked crate `backend`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `backend`, use `cargo add backend` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dusk-curves` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "baca75cc63c8dae42de0bf6bb9af1f3057506ac44c257ffaf78b08ec13da8f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baca75cc63c8dae42de0bf6bb9af1f3057506ac44c257ffaf78b08ec13da8f4b", kill_on_drop: false }`
[INFO] [stdout] baca75cc63c8dae42de0bf6bb9af1f3057506ac44c257ffaf78b08ec13da8f4b
