[INFO] fetching crate odra-casper-backend 0.6.2...
[INFO] checking odra-casper-backend-0.6.2 against 1.95.0 for pr-155915
[INFO] extracting crate odra-casper-backend 0.6.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate odra-casper-backend 0.6.2
[INFO] finished tweaking crates.io crate odra-casper-backend 0.6.2
[INFO] tweaked toml for crates.io crate odra-casper-backend 0.6.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate odra-casper-backend 0.6.2 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 83 packages to latest compatible versions
[INFO] [stderr]       Adding casper-contract v4.0.0 (available: v5.1.1)
[INFO] [stderr]       Adding casper-event-standard v0.5.0 (available: v0.7.0)
[INFO] [stderr]       Adding casper-types v4.0.2 (available: v7.0.0)
[INFO] [stderr]       Adding crypto-common v0.1.6 (available: v0.1.7)
[INFO] [stderr]       Adding ink_allocator v4.3.0 (available: v5.1.1)
[INFO] [stderr]       Adding odra-casper-shared v0.6.2 (available: v0.7.1)
[INFO] [stderr]       Adding odra-types v0.6.2 (available: v0.7.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded odra-casper-types v0.6.2
[INFO] [stderr]   Downloaded odra-utils v0.6.2
[INFO] [stderr]   Downloaded odra-casper-shared v0.6.2
[INFO] [stderr]   Downloaded casper-contract v4.0.0
[INFO] [stderr]   Downloaded casper-event-standard-macro v0.5.0
[INFO] [stderr]   Downloaded casper-event-standard v0.5.0
[INFO] [stderr]   Downloaded odra-types v0.6.2
[INFO] [stderr]   Downloaded ink_allocator v4.3.0
[INFO] [stderr]   Downloaded casper-types v4.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6449d2a58b6a7b637d89d4ac6ac5b8249520f15f18f41d639ce55677382c8d89
[INFO] running `Command { std: "docker" "start" "-a" "6449d2a58b6a7b637d89d4ac6ac5b8249520f15f18f41d639ce55677382c8d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6449d2a58b6a7b637d89d4ac6ac5b8249520f15f18f41d639ce55677382c8d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6449d2a58b6a7b637d89d4ac6ac5b8249520f15f18f41d639ce55677382c8d89", kill_on_drop: false }`
[INFO] [stdout] 6449d2a58b6a7b637d89d4ac6ac5b8249520f15f18f41d639ce55677382c8d89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97882c1d8807068efdddcb03b5799236a51e42ee8b3fc5cc8b574377111e8dcb
[INFO] running `Command { std: "docker" "start" "-a" "97882c1d8807068efdddcb03b5799236a51e42ee8b3fc5cc8b574377111e8dcb", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling crunchy v0.2.4
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]     Checking hex_fmt v0.3.0
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking base16 v0.2.1
[INFO] [stderr]     Checking odra-types v0.6.2
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking ff v0.13.1
[INFO] [stderr]     Checking rand v0.8.6
[INFO] [stderr]     Checking der v0.7.10
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling casper-event-standard-macro v0.5.0
[INFO] [stderr]     Checking odra-utils v0.6.2
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-bigint v0.5.5
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking sec1 v0.7.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking ed25519 v2.2.3
[INFO] [stderr]     Checking rfc6979 v0.4.0
[INFO] [stderr]     Checking ed25519-dalek v2.2.0
[INFO] [stderr]     Checking elliptic-curve v0.13.8
[INFO] [stderr]     Checking ecdsa v0.16.9
[INFO] [stderr]     Checking serde_bytes v0.11.19
[INFO] [stderr]     Checking k256 v0.13.4
[INFO] [stderr]     Checking casper-types v4.0.2
[INFO] [stderr]     Checking casper-event-standard v0.5.0
[INFO] [stderr]     Checking odra-casper-types v0.6.2
[INFO] [stderr]     Checking casper-contract v4.0.0
[INFO] [stderr]     Checking odra-casper-shared v0.6.2
[INFO] [stderr]     Checking odra-casper-backend v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(not(test), feature(core_intrinsics))]
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "97882c1d8807068efdddcb03b5799236a51e42ee8b3fc5cc8b574377111e8dcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97882c1d8807068efdddcb03b5799236a51e42ee8b3fc5cc8b574377111e8dcb", kill_on_drop: false }`
[INFO] [stdout] 97882c1d8807068efdddcb03b5799236a51e42ee8b3fc5cc8b574377111e8dcb
