[INFO] fetching crate perkv 0.0.2...
[INFO] checking perkv-0.0.2 against beta for pr-78714
[INFO] extracting crate perkv 0.0.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate perkv 0.0.2 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 perkv 0.0.2
[INFO] finished tweaking crates.io crate perkv 0.0.2
[INFO] tweaked toml for crates.io crate perkv 0.0.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate perkv 0.0.2 already has a lockfile, it will not be regenerated
[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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] 16b94174155de32ea0e9bd99453e1e00a381f13cf47206bd79bfbcd948961c4f
[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" "16b94174155de32ea0e9bd99453e1e00a381f13cf47206bd79bfbcd948961c4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16b94174155de32ea0e9bd99453e1e00a381f13cf47206bd79bfbcd948961c4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16b94174155de32ea0e9bd99453e1e00a381f13cf47206bd79bfbcd948961c4f", kill_on_drop: false }`
[INFO] [stdout] 16b94174155de32ea0e9bd99453e1e00a381f13cf47206bd79bfbcd948961c4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 5aae56fb4f5a9baa4c16ed7d3a14800a1745879adc949d80b2074cdc8f8b742c
[INFO] running `Command { std: "docker" "start" "-a" "5aae56fb4f5a9baa4c16ed7d3a14800a1745879adc949d80b2074cdc8f8b742c", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking data-encoding v2.1.2
[INFO] [stderr]     Checking unsigned-varint v0.2.3
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking persy v0.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling delegate v0.3.0
[INFO] [stderr]     Checking persawkv v0.0.0-alpha.1
[INFO] [stderr]     Checking perkv v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `perkv::RawKV`
[INFO] [stdout]  --> benches/benches.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 | use perkv::{RawKV, KV};
[INFO] [stdout]   |             ^^^^^ no `RawKV` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/benches.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `perkv`
[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" "5aae56fb4f5a9baa4c16ed7d3a14800a1745879adc949d80b2074cdc8f8b742c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aae56fb4f5a9baa4c16ed7d3a14800a1745879adc949d80b2074cdc8f8b742c", kill_on_drop: false }`
[INFO] [stdout] 5aae56fb4f5a9baa4c16ed7d3a14800a1745879adc949d80b2074cdc8f8b742c