[INFO] cloning repository https://github.com/keroro520/ckb_exec_test_script
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keroro520/ckb_exec_test_script" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeroro520%2Fckb_exec_test_script", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeroro520%2Fckb_exec_test_script'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ddf874a1ecbcc4386403eb6658abdaeb6a4a8450
[INFO] testing keroro520/ckb_exec_test_script against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeroro520%2Fckb_exec_test_script" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/keroro520/ckb_exec_test_script on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-12/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/keroro520/ckb_exec_test_script
[INFO] finished tweaking git repo https://github.com/keroro520/ckb_exec_test_script
[INFO] tweaked toml for git repo https://github.com/keroro520/ckb_exec_test_script written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/keroro520/ckb_exec_test_script already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49457e9cbf211a86e6b768f75961555b82447975d9a83b6b97d298725e90d42a
[INFO] running `Command { std: "docker" "start" "-a" "49457e9cbf211a86e6b768f75961555b82447975d9a83b6b97d298725e90d42a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49457e9cbf211a86e6b768f75961555b82447975d9a83b6b97d298725e90d42a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49457e9cbf211a86e6b768f75961555b82447975d9a83b6b97d298725e90d42a", kill_on_drop: false }`
[INFO] [stdout] 49457e9cbf211a86e6b768f75961555b82447975d9a83b6b97d298725e90d42a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c02d4be75339834bcd31daa700bcf71cc1d4cb5aacb9c4c478d01890bcb9e563
[INFO] running `Command { std: "docker" "start" "-a" "c02d4be75339834bcd31daa700bcf71cc1d4cb5aacb9c4c478d01890bcb9e563", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling faster-hex v0.6.0
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling buddy-alloc v0.4.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling merkle-cbt v0.3.0
[INFO] [stderr]    Compiling ckb-channel v0.43.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling blake2b-rs v0.1.5
[INFO] [stderr]    Compiling ckb-std v0.8.0 (https://github.com/keroro520/ckb-std?tag=v0.8.0#66190808)
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling ckb-hash v0.43.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling numext-constructor v0.1.6
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling numext-fixed-uint-core v0.1.6
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling ckb-occupied-capacity-core v0.43.2
[INFO] [stderr]    Compiling ckb-fixed-hash-core v0.43.2
[INFO] [stderr]    Compiling ckb-occupied-capacity-macros v0.43.2
[INFO] [stderr]    Compiling ckb-fixed-hash-macros v0.43.2
[INFO] [stderr]    Compiling molecule v0.7.2
[INFO] [stderr]    Compiling ckb-standalone-types v0.0.2 (https://github.com/keroro520/ckb-standalone-types?tag=v0.0.2#89388b93)
[INFO] [stderr]    Compiling ckb-occupied-capacity v0.43.2
[INFO] [stderr]    Compiling ckb-error v0.43.2
[INFO] [stderr]    Compiling ckb-fixed-hash v0.43.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/ckb-std-c3c7b779e8fb158b/6619080/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(llvm_asm)]
[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 `ckb-std` 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" "c02d4be75339834bcd31daa700bcf71cc1d4cb5aacb9c4c478d01890bcb9e563", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c02d4be75339834bcd31daa700bcf71cc1d4cb5aacb9c4c478d01890bcb9e563", kill_on_drop: false }`
[INFO] [stdout] c02d4be75339834bcd31daa700bcf71cc1d4cb5aacb9c4c478d01890bcb9e563