[INFO] fetching crate ckb-multisig 0.38.0...
[INFO] testing ckb-multisig-0.38.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate ckb-multisig 0.38.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ckb-multisig 0.38.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ckb-multisig 0.38.0
[INFO] finished tweaking crates.io crate ckb-multisig 0.38.0
[INFO] tweaked toml for crates.io crate ckb-multisig 0.38.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9820b785c82a8769c8e8f274a410326a66bb264a80d3b08c4ba91ce13250dae
[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" "a9820b785c82a8769c8e8f274a410326a66bb264a80d3b08c4ba91ce13250dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9820b785c82a8769c8e8f274a410326a66bb264a80d3b08c4ba91ce13250dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9820b785c82a8769c8e8f274a410326a66bb264a80d3b08c4ba91ce13250dae", kill_on_drop: false }`
[INFO] [stdout] a9820b785c82a8769c8e8f274a410326a66bb264a80d3b08c4ba91ce13250dae
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] 3d8fbef50905329e08eabe238117b40eb3f65ecdf60d0b6134af52f40dfbe721
[INFO] running `Command { std: "docker" "start" "-a" "3d8fbef50905329e08eabe238117b40eb3f65ecdf60d0b6134af52f40dfbe721", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]    Compiling ckb-logger v0.38.0
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling secp256k1-sys v0.1.2
[INFO] [stderr]    Compiling secp256k1 v0.17.2
[INFO] [stderr]    Compiling ckb-fixed-hash-core v0.38.0
[INFO] [stderr]    Compiling ckb-fixed-hash-macros v0.38.0
[INFO] [stderr]    Compiling ckb-fixed-hash v0.38.0
[INFO] [stderr]    Compiling ckb-crypto v0.38.0
[INFO] [stderr]    Compiling ckb-multisig v0.38.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.93s
[INFO] running `Command { std: "docker" "inspect" "3d8fbef50905329e08eabe238117b40eb3f65ecdf60d0b6134af52f40dfbe721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d8fbef50905329e08eabe238117b40eb3f65ecdf60d0b6134af52f40dfbe721", kill_on_drop: false }`
[INFO] [stdout] 3d8fbef50905329e08eabe238117b40eb3f65ecdf60d0b6134af52f40dfbe721
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 87aad9200ea501ce3f5d4b52850184670b0ca7c27ed2ac611c0ae4d0c955332c
[INFO] running `Command { std: "docker" "start" "-a" "87aad9200ea501ce3f5d4b52850184670b0ca7c27ed2ac611c0ae4d0c955332c", kill_on_drop: false }`
[INFO] [stderr]    Compiling ckb-multisig v0.38.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `rand`
[INFO] [stdout]   --> src/secp256k1.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     use rand::{thread_rng, Rng};
[INFO] [stdout]    |         ^^^^ use of undeclared crate or module `rand`
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ckb-multisig`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "87aad9200ea501ce3f5d4b52850184670b0ca7c27ed2ac611c0ae4d0c955332c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87aad9200ea501ce3f5d4b52850184670b0ca7c27ed2ac611c0ae4d0c955332c", kill_on_drop: false }`
[INFO] [stdout] 87aad9200ea501ce3f5d4b52850184670b0ca7c27ed2ac611c0ae4d0c955332c