[INFO] fetching crate tink-prf 0.2.1...
[INFO] checking tink-prf-0.2.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate tink-prf 0.2.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate tink-prf 0.2.1 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] started tweaking crates.io crate tink-prf 0.2.1
[INFO] finished tweaking crates.io crate tink-prf 0.2.1
[INFO] tweaked toml for crates.io crate tink-prf 0.2.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7c014cc84cb6ba2bb5df4242be83084fa1f130244e34896849b89b6d044a998f
[INFO] running `Command { std: "docker" "start" "-a" "7c014cc84cb6ba2bb5df4242be83084fa1f130244e34896849b89b6d044a998f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c014cc84cb6ba2bb5df4242be83084fa1f130244e34896849b89b6d044a998f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c014cc84cb6ba2bb5df4242be83084fa1f130244e34896849b89b6d044a998f", kill_on_drop: false }`
[INFO] [stdout] 7c014cc84cb6ba2bb5df4242be83084fa1f130244e34896849b89b6d044a998f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 3d87e415ee2eb0feadcb000bf48deced21fcee563cc9328acc0980e6cf59cfb8
[INFO] running `Command { std: "docker" "start" "-a" "3d87e415ee2eb0feadcb000bf48deced21fcee563cc9328acc0980e6cf59cfb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]     Checking dbl v0.3.1
[INFO] [stderr]    Compiling prost-derive v0.8.0
[INFO] [stderr]     Checking crypto-mac v0.11.1
[INFO] [stderr]     Checking aes v0.7.5
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]     Checking cmac v0.6.0
[INFO] [stderr]     Checking hkdf v0.11.0
[INFO] [stderr]    Compiling prost v0.8.0
[INFO] [stderr]    Compiling prost-types v0.8.0
[INFO] [stderr]    Compiling prost-build v0.8.0
[INFO] [stderr]    Compiling tink-proto v0.2.2
[INFO] [stderr]     Checking tink-core v0.2.2
[INFO] [stderr]     Checking tink-prf v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> benches/benchmarks.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(test)]
[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 `tink-prf` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3d87e415ee2eb0feadcb000bf48deced21fcee563cc9328acc0980e6cf59cfb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d87e415ee2eb0feadcb000bf48deced21fcee563cc9328acc0980e6cf59cfb8", kill_on_drop: false }`
[INFO] [stdout] 3d87e415ee2eb0feadcb000bf48deced21fcee563cc9328acc0980e6cf59cfb8
