[INFO] fetching crate odra-casper-backend 0.7.0...
[INFO] testing odra-casper-backend-0.7.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate odra-casper-backend 0.7.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate odra-casper-backend 0.7.0 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] started tweaking crates.io crate odra-casper-backend 0.7.0
[INFO] finished tweaking crates.io crate odra-casper-backend 0.7.0
[INFO] tweaked toml for crates.io crate odra-casper-backend 0.7.0 written to /workspace/builds/worker-0-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]     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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hex_fmt v0.3.0
[INFO] [stderr]   Downloaded casper-contract v3.0.0
[INFO] [stderr]   Downloaded ed25519 v1.2.0
[INFO] [stderr]   Downloaded ink_allocator v4.3.0
[INFO] [stderr]   Downloaded casper-event-standard-macro v0.4.1
[INFO] [stderr]   Downloaded odra-casper-shared v0.7.1
[INFO] [stderr]   Downloaded odra-types v0.7.1
[INFO] [stderr]   Downloaded casper-event-standard v0.4.1
[INFO] [stderr]   Downloaded odra-utils v0.7.1
[INFO] [stderr]   Downloaded casper-types v3.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 14c281cfd4212fdf49148005d78b5f65e7cbf39997ee1a60633f5fc76b5b45e8
[INFO] running `Command { std: "docker" "start" "-a" "14c281cfd4212fdf49148005d78b5f65e7cbf39997ee1a60633f5fc76b5b45e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14c281cfd4212fdf49148005d78b5f65e7cbf39997ee1a60633f5fc76b5b45e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c281cfd4212fdf49148005d78b5f65e7cbf39997ee1a60633f5fc76b5b45e8", kill_on_drop: false }`
[INFO] [stdout] 14c281cfd4212fdf49148005d78b5f65e7cbf39997ee1a60633f5fc76b5b45e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 34573d693ce6111ce5334d0c8443cda0dc893c315b806d4524c6bd5e3761b9be
[INFO] running `Command { std: "docker" "start" "-a" "34573d693ce6111ce5334d0c8443cda0dc893c315b806d4524c6bd5e3761b9be", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling radium v0.3.0
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling crypto-mac v0.10.1
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling signature v1.2.2
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling ed25519 v1.2.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling hex_fmt v0.3.0
[INFO] [stderr]    Compiling blake2 v0.9.2
[INFO] [stderr]    Compiling base16 v0.2.1
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling odra-utils v0.7.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling bitvec v0.18.5
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling ff v0.8.0
[INFO] [stderr]    Compiling group v0.8.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling casper-event-standard-macro v0.4.1
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.194
[INFO] [stderr]    Compiling zeroize v1.3.0
[INFO] [stderr]    Compiling elliptic-curve v0.8.5
[INFO] [stderr]    Compiling curve25519-dalek v3.2.1
[INFO] [stderr]    Compiling ecdsa v0.10.2
[INFO] [stderr]    Compiling ed25519-dalek v1.0.1
[INFO] [stderr]    Compiling k256 v0.7.3
[INFO] [stderr]    Compiling serde_bytes v0.11.14
[INFO] [stderr]    Compiling casper-types v3.0.0
[INFO] [stderr]    Compiling casper-contract v3.0.0
[INFO] [stderr]    Compiling odra-types v0.7.1
[INFO] [stderr]    Compiling casper-event-standard v0.4.1
[INFO] [stderr]    Compiling odra-casper-shared v0.7.1
[INFO] [stderr]    Compiling odra-casper-backend v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:32
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(not(test), feature(core_intrinsics))]
[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 `odra-casper-backend` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "34573d693ce6111ce5334d0c8443cda0dc893c315b806d4524c6bd5e3761b9be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34573d693ce6111ce5334d0c8443cda0dc893c315b806d4524c6bd5e3761b9be", kill_on_drop: false }`
[INFO] [stdout] 34573d693ce6111ce5334d0c8443cda0dc893c315b806d4524c6bd5e3761b9be
