[INFO] fetching crate nomos 0.1.0...
[INFO] testing nomos-0.1.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate nomos 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate nomos 0.1.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nomos 0.1.0
[INFO] finished tweaking crates.io crate nomos 0.1.0
[INFO] tweaked toml for crates.io crate nomos 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36b398f5b5303eaa58ce0271545887cd4e6677ba3a10053bd184e1f15d633151
[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" "36b398f5b5303eaa58ce0271545887cd4e6677ba3a10053bd184e1f15d633151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36b398f5b5303eaa58ce0271545887cd4e6677ba3a10053bd184e1f15d633151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36b398f5b5303eaa58ce0271545887cd4e6677ba3a10053bd184e1f15d633151", kill_on_drop: false }`
[INFO] [stdout] 36b398f5b5303eaa58ce0271545887cd4e6677ba3a10053bd184e1f15d633151
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2022c7721c2e251732d3cc16da144852eff0aef3187db290a8b969e3516fa900
[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" "2022c7721c2e251732d3cc16da144852eff0aef3187db290a8b969e3516fa900", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling cranelift-entity v0.31.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling wasmparser v0.32.1
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling errno v0.2.6
[INFO] [stderr]    Compiling page_size v0.4.2
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling dynasmrt v0.3.1
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.31.0
[INFO] [stderr]    Compiling cranelift-bforest v0.31.0
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling blake2b_simd v0.4.1
[INFO] [stderr]    Compiling wasmer-runtime-core v0.5.7
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling bincode v1.3.1
[INFO] [stderr]    Compiling serde_bytes v0.10.5
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]    Compiling serde-bench v0.0.7
[INFO] [stderr]    Compiling nomos-runtime v0.1.0
[INFO] [stderr]    Compiling cranelift-codegen v0.31.0
[INFO] [stderr]    Compiling target-lexicon v0.4.0
[INFO] [stderr]    Compiling dynasm v0.3.2
[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/dynasm-0.3.2/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/dynasm-0.3.2/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_span)]
[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 `dynasm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2022c7721c2e251732d3cc16da144852eff0aef3187db290a8b969e3516fa900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2022c7721c2e251732d3cc16da144852eff0aef3187db290a8b969e3516fa900", kill_on_drop: false }`
[INFO] [stdout] 2022c7721c2e251732d3cc16da144852eff0aef3187db290a8b969e3516fa900
