[INFO] crate perkv 0.0.2 is already in cache
[INFO] testing perkv-0.0.2 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate perkv 0.0.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate perkv 0.0.2 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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-1/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" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6dadfe6d588d70c8c909ef887f635006fdeb6fd8a15d2155f97e7404dc643f0c
[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" "6dadfe6d588d70c8c909ef887f635006fdeb6fd8a15d2155f97e7404dc643f0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dadfe6d588d70c8c909ef887f635006fdeb6fd8a15d2155f97e7404dc643f0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dadfe6d588d70c8c909ef887f635006fdeb6fd8a15d2155f97e7404dc643f0c", kill_on_drop: false }`
[INFO] [stdout] 6dadfe6d588d70c8c909ef887f635006fdeb6fd8a15d2155f97e7404dc643f0c
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b31933c818ebcd0ff3923f073c9f302b9662d919b417fcb25d2dc2ac45f1d970
[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" "b31933c818ebcd0ff3923f073c9f302b9662d919b417fcb25d2dc2ac45f1d970", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling data-encoding v2.1.2
[INFO] [stderr]    Compiling unsigned-varint v0.2.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling persy v0.7.0
[INFO] [stderr]    Compiling delegate v0.3.0
[INFO] [stderr]    Compiling persawkv v0.0.0-alpha.1
[INFO] [stderr]    Compiling perkv v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `persy`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name persy --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/persy-0.7.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 -C metadata=8e9ba1f6f3d37369 -C extra-filename=-8e9ba1f6f3d37369 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-7141a938ff93d068.rmeta --extern crc=/opt/rustwide/target/debug/deps/libcrc-4ebcff3c7b28e9c1.rmeta --extern data_encoding=/opt/rustwide/target/debug/deps/libdata_encoding-f98736056b69d85d.rmeta --extern fs2=/opt/rustwide/target/debug/deps/libfs2-2461d24a986668b9.rmeta --extern linked_hash_map=/opt/rustwide/target/debug/deps/liblinked_hash_map-d4391d1b7da53318.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-8603ce068a3ab38f.rmeta --extern unsigned_varint=/opt/rustwide/target/debug/deps/libunsigned_varint-8ec010ed2baf41a7.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "b31933c818ebcd0ff3923f073c9f302b9662d919b417fcb25d2dc2ac45f1d970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b31933c818ebcd0ff3923f073c9f302b9662d919b417fcb25d2dc2ac45f1d970", kill_on_drop: false }`
[INFO] [stdout] b31933c818ebcd0ff3923f073c9f302b9662d919b417fcb25d2dc2ac45f1d970