[INFO] cloning repository https://github.com/Jiuhong-casperlabs/flash
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jiuhong-casperlabs/flash" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJiuhong-casperlabs%2Fflash", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJiuhong-casperlabs%2Fflash'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 696aca54218947eceaf5e0b01b7b46cf225a7223
[INFO] testing Jiuhong-casperlabs/flash against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJiuhong-casperlabs%2Fflash" "/workspace/builds/worker-100/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-100/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jiuhong-casperlabs/flash on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jiuhong-casperlabs/flash
[INFO] finished tweaking git repo https://github.com/Jiuhong-casperlabs/flash
[INFO] tweaked toml for git repo https://github.com/Jiuhong-casperlabs/flash written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] crate git repo https://github.com/Jiuhong-casperlabs/flash already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zeroize_derive v1.3.1
[INFO] [stderr]   Downloaded zeroize v1.5.0
[INFO] [stderr]   Downloaded casper-contract v1.4.3
[INFO] [stderr]   Downloaded casper-types v1.4.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b4f936611177d22815b1124b9e1ee0f1c49b5e83ab0e08e20628aa2d8119f5e
[INFO] running `Command { std: "docker" "start" "-a" "4b4f936611177d22815b1124b9e1ee0f1c49b5e83ab0e08e20628aa2d8119f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b4f936611177d22815b1124b9e1ee0f1c49b5e83ab0e08e20628aa2d8119f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b4f936611177d22815b1124b9e1ee0f1c49b5e83ab0e08e20628aa2d8119f5e", kill_on_drop: false }`
[INFO] [stdout] 4b4f936611177d22815b1124b9e1ee0f1c49b5e83ab0e08e20628aa2d8119f5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26c3f6bfe77ab683eb83a61059216d9e16beb6652e0fbf8a9173bb9c4657204c
[INFO] running `Command { std: "docker" "start" "-a" "26c3f6bfe77ab683eb83a61059216d9e16beb6652e0fbf8a9173bb9c4657204c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling radium v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling serde_json v1.0.75
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling hex_fmt v0.3.0
[INFO] [stderr]    Compiling base16 v0.2.1
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling ld-contract v0.1.0 (/opt/rustwide/workdir/example/ld-contract)
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling bitvec v0.18.5
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling uint v0.9.1
[INFO] [stderr]    Compiling ff v0.8.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.10.1
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling group v0.8.0
[INFO] [stderr]    Compiling signature v1.2.2
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling blake2 v0.9.2
[INFO] [stderr]    Compiling ed25519 v1.2.0
[INFO] [stderr]    Compiling zeroize_derive v1.3.1
[INFO] [stderr]    Compiling zeroize v1.5.0
[INFO] [stderr]    Compiling elliptic-curve v0.8.5
[INFO] [stderr]    Compiling curve25519-dalek v3.2.0
[INFO] [stderr]    Compiling ecdsa v0.10.2
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling k256 v0.7.3
[INFO] [stderr]    Compiling ed25519-dalek v1.0.1
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling casper-types v1.4.6
[INFO] [stderr]    Compiling casper-contract v1.4.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/casper-contract-1.4.3/src/lib.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     feature(alloc_error_handler, core_intrinsics, lang_items)
[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 `casper-contract` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "26c3f6bfe77ab683eb83a61059216d9e16beb6652e0fbf8a9173bb9c4657204c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26c3f6bfe77ab683eb83a61059216d9e16beb6652e0fbf8a9173bb9c4657204c", kill_on_drop: false }`
[INFO] [stdout] 26c3f6bfe77ab683eb83a61059216d9e16beb6652e0fbf8a9173bb9c4657204c