[INFO] cloning repository https://github.com/zatoichi-labs/py-subkey
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zatoichi-labs/py-subkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzatoichi-labs%2Fpy-subkey"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzatoichi-labs%2Fpy-subkey'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b561fb1ef73843cc0e1bde8322406ddae24f68d1
[INFO] testing zatoichi-labs/py-subkey against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzatoichi-labs%2Fpy-subkey" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zatoichi-labs/py-subkey on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zatoichi-labs/py-subkey
[INFO] finished tweaking git repo https://github.com/zatoichi-labs/py-subkey
[INFO] tweaked toml for git repo https://github.com/zatoichi-labs/py-subkey written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/zatoichi-labs/py-subkey already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bdb27ceacb5a548ebf0a402983fbc40e9f8abe3530c3bac76f3d9157b63c4a91
[INFO] running `"docker" "start" "-a" "bdb27ceacb5a548ebf0a402983fbc40e9f8abe3530c3bac76f3d9157b63c4a91"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling byte-tools v0.3.1
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling subtle v2.2.2
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling opaque-debug v0.2.3
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling byte-slice-cast v0.3.4
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling bitvec v0.15.2
[INFO] [stderr]    Compiling rustc-hex v2.0.1
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling parity-wasm v0.41.0
[INFO] [stderr]    Compiling memory_units v0.3.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling sp-std v2.0.0 (https://github.com/paritytech/substrate.git?rev=333f3a7d00771d15102bd40f5aade9e58b1b095f#333f3a7d)
[INFO] [stderr]    Compiling keccak v0.1.0
[INFO] [stderr]    Compiling unindent v0.1.5
[INFO] [stderr]    Compiling zeroize v0.9.3
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling environmental v1.0.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.1
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling constant_time_eq v0.1.4
[INFO] [stderr]    Compiling hash-db v0.15.2
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling base58 v0.1.0
[INFO] [stderr]    Compiling hex v0.4.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling hash256-std-hasher v0.15.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling uint v0.8.2
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling wasmi-validation v0.3.0
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stderr]    Compiling pbkdf2 v0.3.0
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling hmac-drbg v0.2.0
[INFO] [stderr]    Compiling curve25519-dalek v1.2.3
[INFO] [stderr]    Compiling libsecp256k1 v0.3.2
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling fixed-hash v0.5.1
[INFO] [stderr]    Compiling twox-hash v1.5.0
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling once_cell v0.1.8
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling wasmi v0.6.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling pyo3-derive-backend v0.8.3
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]    Compiling zeroize_derive v1.0.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling sp-debug-derive v2.0.0 (https://github.com/paritytech/substrate.git?rev=333f3a7d00771d15102bd40f5aade9e58b1b095f#333f3a7d)
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.1.3
[INFO] [stderr]    Compiling inventory-impl v0.1.4
[INFO] [stderr]    Compiling ctor v0.1.12
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling pyo3cls v0.8.3
[INFO] [stderr]    Compiling inventory v0.1.4
[INFO] [stderr]    Compiling zeroize v1.1.0
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling merlin v1.3.0
[INFO] [stderr]    Compiling indoc-impl v0.3.4
[INFO] [stderr]    Compiling paste-impl v0.1.6
[INFO] [stderr]    Compiling tiny-bip39 v0.6.2
[INFO] [stderr]    Compiling ed25519-dalek v1.0.0-pre.2
[INFO] [stderr]    Compiling schnorrkel v0.8.5
[INFO] [stderr]    Compiling indoc v0.3.4
[INFO] [stderr]    Compiling substrate-bip39 v0.3.1
[INFO] [stderr]    Compiling paste v0.1.6
[INFO] [stderr]    Compiling sp-wasm-interface v2.0.0 (https://github.com/paritytech/substrate.git?rev=333f3a7d00771d15102bd40f5aade9e58b1b095f#333f3a7d)
[INFO] [stderr]    Compiling toml v0.5.5
[INFO] [stderr]    Compiling impl-serde v0.2.3
[INFO] [stderr]    Compiling serde_json v1.0.44
[INFO] [stderr]    Compiling sp-core-storage v2.0.0 (https://github.com/paritytech/substrate.git?rev=333f3a7d00771d15102bd40f5aade9e58b1b095f#333f3a7d)
[INFO] [stderr]    Compiling sp-externalities v2.0.0 (https://github.com/paritytech/substrate.git?rev=333f3a7d00771d15102bd40f5aade9e58b1b095f#333f3a7d)
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]    Compiling pyo3 v0.8.3
[INFO] [stderr]    Compiling parity-scale-codec-derive v1.1.0
[INFO] [stderr]    Compiling sp-runtime-interface-proc-macro v2.0.0 (https://github.com/paritytech/substrate.git?rev=333f3a7d00771d15102bd40f5aade9e58b1b095f#333f3a7d)
[INFO] [stderr] error: failed to run custom build command for `pyo3 v0.8.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/pyo3-ee54fa334bda6756/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Error: pyo3 requires a nightly or dev version of Rust.', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pyo3-0.8.3/build.rs:542:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55cbe0688a64 - backtrace::backtrace::libunwind::trace::hc1c4a1d8ad423b97
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]    1:     0x55cbe0688a64 - backtrace::backtrace::trace_unsynchronized::h82274781060cb056
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55cbe0688a64 - std::sys_common::backtrace::_print_fmt::h2a45d89b653a4da8
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]    3:     0x55cbe0688a64 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h41a0a93ab85e6aa1
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x55cbe06b08ac - core::fmt::write::hdaea18585065a96d
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1069
[INFO] [stderr]    5:     0x55cbe0685e83 - std::io::Write::write_fmt::h0cea70c809005252
[INFO] [stderr]                                at src/libstd/io/mod.rs:1504
[INFO] [stderr]    6:     0x55cbe068b085 - std::sys_common::backtrace::_print::hd95f9978cc145ca4
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x55cbe068b085 - std::sys_common::backtrace::print::hfb25ca2291be47d0
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x55cbe068b085 - std::panicking::default_hook::{{closure}}::h44f76cee5dc8591c
[INFO] [stderr]                                at src/libstd/panicking.rs:198
[INFO] [stderr]    9:     0x55cbe068adc2 - std::panicking::default_hook::h198e1a712910f1e6
[INFO] [stderr]                                at src/libstd/panicking.rs:218
[INFO] [stderr]   10:     0x55cbe068b6e2 - std::panicking::rust_panic_with_hook::hc0b4730bb8013f9d
[INFO] [stderr]                                at src/libstd/panicking.rs:511
[INFO] [stderr]   11:     0x55cbe0476c61 - std::panicking::begin_panic::h7bd72bb4ddcf20d7
[INFO] [stderr]                                at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:438
[INFO] [stderr]   12:     0x55cbe0424ca6 - build_script_build::check_rustc_version::hca4e6cdbd02dbc16
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pyo3-0.8.3/build.rs:542
[INFO] [stderr]   13:     0x55cbe0425017 - build_script_build::main::hcf6d7e2661c5e572
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pyo3-0.8.3/build.rs:563
[INFO] [stderr]   14:     0x55cbe0442c2d - std::rt::lang_start::{{closure}}::hf394d415d69bc047
[INFO] [stderr]                                at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/rt.rs:67
[INFO] [stderr]   15:     0x55cbe068bb28 - std::rt::lang_start_internal::{{closure}}::h7a212202ff76034b
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   16:     0x55cbe068bb28 - std::panicking::try::do_call::h6d214a73427d759b
[INFO] [stderr]                                at src/libstd/panicking.rs:331
[INFO] [stderr]   17:     0x55cbe068bb28 - std::panicking::try::hc078f0e11721d1cb
[INFO] [stderr]                                at src/libstd/panicking.rs:274
[INFO] [stderr]   18:     0x55cbe068bb28 - std::panic::catch_unwind::hb31c05be30625612
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   19:     0x55cbe068bb28 - std::rt::lang_start_internal::hcf7fb98a775d5af0
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   20:     0x55cbe0442bf7 - std::rt::lang_start::h57166ac53c75ed07
[INFO] [stderr]                                at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/rt.rs:67
[INFO] [stderr]   21:     0x55cbe042a1da - main
[INFO] [stderr]   22:     0x7ff3e471f0b3 - __libc_start_main
[INFO] [stderr]   23:     0x55cbe041f17e - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "bdb27ceacb5a548ebf0a402983fbc40e9f8abe3530c3bac76f3d9157b63c4a91"`
[INFO] running `"docker" "rm" "-f" "bdb27ceacb5a548ebf0a402983fbc40e9f8abe3530c3bac76f3d9157b63c4a91"`
[INFO] [stdout] bdb27ceacb5a548ebf0a402983fbc40e9f8abe3530c3bac76f3d9157b63c4a91