[INFO] fetching crate dusk-schnorr 0.16.0...
[INFO] testing dusk-schnorr-0.16.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate dusk-schnorr 0.16.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate dusk-schnorr 0.16.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate dusk-schnorr 0.16.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate dusk-schnorr 0.16.0
[INFO] tweaked toml for crates.io crate dusk-schnorr 0.16.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84a05372770fe087a3aa7e1dd55609c36a5a4b0b3ec1a0b27bf8b7fe7a39599a
[INFO] running `Command { std: "docker" "start" "-a" "84a05372770fe087a3aa7e1dd55609c36a5a4b0b3ec1a0b27bf8b7fe7a39599a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84a05372770fe087a3aa7e1dd55609c36a5a4b0b3ec1a0b27bf8b7fe7a39599a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84a05372770fe087a3aa7e1dd55609c36a5a4b0b3ec1a0b27bf8b7fe7a39599a", kill_on_drop: false }`
[INFO] [stdout] 84a05372770fe087a3aa7e1dd55609c36a5a4b0b3ec1a0b27bf8b7fe7a39599a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21c5af38c3bad89913a2463da10f609a6922437fd56eb78809f26b44901a913d
[INFO] running `Command { std: "docker" "start" "-a" "21c5af38c3bad89913a2463da10f609a6922437fd56eb78809f26b44901a913d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling subtle v2.5.0
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling ahash v0.4.8
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling cpufeatures v0.2.12
[INFO] [stderr]    Compiling keccak v0.1.4
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.17
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling crossbeam-deque v0.8.4
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling ff v0.13.0
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling derive-hex v0.1.2
[INFO] [stderr]    Compiling pairing v0.23.0
[INFO] [stderr]    Compiling dusk-bytes v0.1.7
[INFO] [stderr]    Compiling dusk-bls12_381 v0.12.3
[INFO] [stderr]    Compiling dusk-jubjub v0.13.1
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling msgpacker-derive v0.3.1
[INFO] [stderr]    Compiling zeroize v1.7.0
[INFO] [stderr]    Compiling msgpacker v0.4.3
[INFO] [stderr]    Compiling merlin v3.0.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/msgpacker-0.4.3/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     iter_array_chunks,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/msgpacker-0.4.3/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     maybe_uninit_array_assume_init,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/msgpacker-0.4.3/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     maybe_uninit_uninit_array
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `msgpacker` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "21c5af38c3bad89913a2463da10f609a6922437fd56eb78809f26b44901a913d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21c5af38c3bad89913a2463da10f609a6922437fd56eb78809f26b44901a913d", kill_on_drop: false }`
[INFO] [stdout] 21c5af38c3bad89913a2463da10f609a6922437fd56eb78809f26b44901a913d
