[INFO] cloning repository https://github.com/springfieldking/os_riscv_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/springfieldking/os_riscv_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspringfieldking%2Fos_riscv_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspringfieldking%2Fos_riscv_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3f07b346d2d37a60ec173be787f233128073afc0
[INFO] testing springfieldking/os_riscv_rust against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspringfieldking%2Fos_riscv_rust" "/workspace/builds/worker-40/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-40/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/springfieldking/os_riscv_rust on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-40/source/.cargo/config
[INFO] started tweaking git repo https://github.com/springfieldking/os_riscv_rust
[INFO] finished tweaking git repo https://github.com/springfieldking/os_riscv_rust
[INFO] tweaked toml for git repo https://github.com/springfieldking/os_riscv_rust written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate git repo https://github.com/springfieldking/os_riscv_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f91df0859a59f3fb9468bbf7de3d8913f3b0bad2c9ba3eec613c62eb6cf46b4b
[INFO] running `Command { std: "docker" "start" "-a" "f91df0859a59f3fb9468bbf7de3d8913f3b0bad2c9ba3eec613c62eb6cf46b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f91df0859a59f3fb9468bbf7de3d8913f3b0bad2c9ba3eec613c62eb6cf46b4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91df0859a59f3fb9468bbf7de3d8913f3b0bad2c9ba3eec613c62eb6cf46b4b", kill_on_drop: false }`
[INFO] [stdout] f91df0859a59f3fb9468bbf7de3d8913f3b0bad2c9ba3eec613c62eb6cf46b4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b37a3b81451ece843cac6779195ca558faedac53cae0486b54742c69bcf2e4a4
[INFO] running `Command { std: "docker" "start" "-a" "b37a3b81451ece843cac6779195ca558faedac53cae0486b54742c69bcf2e4a4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(llvm_asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(global_asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `os` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "b37a3b81451ece843cac6779195ca558faedac53cae0486b54742c69bcf2e4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b37a3b81451ece843cac6779195ca558faedac53cae0486b54742c69bcf2e4a4", kill_on_drop: false }`
[INFO] [stdout] b37a3b81451ece843cac6779195ca558faedac53cae0486b54742c69bcf2e4a4
