[INFO] fetching crate tiny-bip39 0.8.0...
[INFO] checking tiny-bip39-0.8.0 against beta for pr-78714
[INFO] extracting crate tiny-bip39 0.8.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate tiny-bip39 0.8.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tiny-bip39 0.8.0
[INFO] finished tweaking crates.io crate tiny-bip39 0.8.0
[INFO] tweaked toml for crates.io crate tiny-bip39 0.8.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] d9bb205ca4566963e07f75c81b475336d6128fab24722cdeee48b4561717f7f3
[INFO] running `Command { std: "docker" "start" "-a" "d9bb205ca4566963e07f75c81b475336d6128fab24722cdeee48b4561717f7f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9bb205ca4566963e07f75c81b475336d6128fab24722cdeee48b4561717f7f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9bb205ca4566963e07f75c81b475336d6128fab24722cdeee48b4561717f7f3", kill_on_drop: false }`
[INFO] [stdout] d9bb205ca4566963e07f75c81b475336d6128fab24722cdeee48b4561717f7f3
[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=forbid" "-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" "+beta" "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] 52c4bee9a3eda15d19f34c79bb81b4e2bc9b714f25a856afb5b24d939ce18a5b
[INFO] running `Command { std: "docker" "start" "-a" "52c4bee9a3eda15d19f34c79bb81b4e2bc9b714f25a856afb5b24d939ce18a5b", kill_on_drop: false }`
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]    Compiling zeroize_derive v1.0.1
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking pbkdf2 v0.4.0
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking zeroize v1.1.1
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking tiny-bip39 v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `tiny-bip39`
[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" "52c4bee9a3eda15d19f34c79bb81b4e2bc9b714f25a856afb5b24d939ce18a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52c4bee9a3eda15d19f34c79bb81b4e2bc9b714f25a856afb5b24d939ce18a5b", kill_on_drop: false }`
[INFO] [stdout] 52c4bee9a3eda15d19f34c79bb81b4e2bc9b714f25a856afb5b24d939ce18a5b