[INFO] fetching crate fls 0.1.0...
[INFO] testing fls-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate fls 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate fls 0.1.0 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] started tweaking crates.io crate fls 0.1.0
[INFO] finished tweaking crates.io crate fls 0.1.0
[INFO] tweaked toml for crates.io crate fls 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate fls 0.1.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded compiler_builtins v0.1.47
[INFO] [stderr]   Downloaded veneer v0.1.0
[INFO] [stderr]   Downloaded veneer-macros v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b9a591ca9d86c60be410229c351d749c4ce4a9ed5247d46149ff19f6e1ee3c5b
[INFO] running `Command { std: "docker" "start" "-a" "b9a591ca9d86c60be410229c351d749c4ce4a9ed5247d46149ff19f6e1ee3c5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9a591ca9d86c60be410229c351d749c4ce4a9ed5247d46149ff19f6e1ee3c5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9a591ca9d86c60be410229c351d749c4ce4a9ed5247d46149ff19f6e1ee3c5b", kill_on_drop: false }`
[INFO] [stdout] b9a591ca9d86c60be410229c351d749c4ce4a9ed5247d46149ff19f6e1ee3c5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] d5c39d5c75e33dfeecdf7db4bb9dfecedbb66ad064342041e947e6f113260f62
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d5c39d5c75e33dfeecdf7db4bb9dfecedbb66ad064342041e947e6f113260f62", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiler_builtins v0.1.47
[INFO] [stderr]    Compiling sc v0.2.4
[INFO] [stderr]    Compiling veneer-macros v0.1.0
[INFO] [stderr]    Compiling fls v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/sc-0.2.4/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(llvm_asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tinyvec v1.3.1
[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 `sc` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/veneer-macros-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic, proc_macro_span, proc_macro_quote)]
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "d5c39d5c75e33dfeecdf7db4bb9dfecedbb66ad064342041e947e6f113260f62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5c39d5c75e33dfeecdf7db4bb9dfecedbb66ad064342041e947e6f113260f62", kill_on_drop: false }`
[INFO] [stdout] d5c39d5c75e33dfeecdf7db4bb9dfecedbb66ad064342041e947e6f113260f62
