[INFO] fetching crate zfs-core 0.2.0...
[INFO] checking zfs-core-0.2.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate zfs-core 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate zfs-core 0.2.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zfs-core 0.2.0
[INFO] finished tweaking crates.io crate zfs-core 0.2.0
[INFO] tweaked toml for crates.io crate zfs-core 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zfs-core-sys v0.1.0
[INFO] [stderr]   Downloaded nvpair v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 971e9d86491706ab325902c944008337d406c61156a30e2c9ebc0b9b1395dcec
[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" "971e9d86491706ab325902c944008337d406c61156a30e2c9ebc0b9b1395dcec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "971e9d86491706ab325902c944008337d406c61156a30e2c9ebc0b9b1395dcec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "971e9d86491706ab325902c944008337d406c61156a30e2c9ebc0b9b1395dcec", kill_on_drop: false }`
[INFO] [stdout] 971e9d86491706ab325902c944008337d406c61156a30e2c9ebc0b9b1395dcec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddceda3476f0cc84f1e7d2625cfe5e8c9a994557ed5e5b84c3c404d1da6843c3
[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" "ddceda3476f0cc84f1e7d2625cfe5e8c9a994557ed5e5b84c3c404d1da6843c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling nvpair-sys v0.1.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking cstr-argument v0.0.2
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking cstr-argument v0.1.1
[INFO] [stderr]     Checking nvpair v0.3.0
[INFO] [stderr]    Compiling zfs-core-sys v0.1.0
[INFO] [stderr]     Checking zfs-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `libzfs_core`
[INFO] [stdout]  --> tests/basic.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate libzfs_core as zfs;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[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 E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zfs-core`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "ddceda3476f0cc84f1e7d2625cfe5e8c9a994557ed5e5b84c3c404d1da6843c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddceda3476f0cc84f1e7d2625cfe5e8c9a994557ed5e5b84c3c404d1da6843c3", kill_on_drop: false }`
[INFO] [stdout] ddceda3476f0cc84f1e7d2625cfe5e8c9a994557ed5e5b84c3c404d1da6843c3