[INFO] cloning repository https://github.com/leekt216/rust_folding_blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leekt216/rust_folding_blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleekt216%2Frust_folding_blockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleekt216%2Frust_folding_blockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c615aba8b3fc2eb0b2681691c9d23f8f315bb640
[INFO] checking leekt216/rust_folding_blockchain against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleekt216%2Frust_folding_blockchain" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leekt216/rust_folding_blockchain on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leekt216/rust_folding_blockchain
[INFO] finished tweaking git repo https://github.com/leekt216/rust_folding_blockchain
[INFO] tweaked toml for git repo https://github.com/leekt216/rust_folding_blockchain written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/leekt216/rust_folding_blockchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "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" "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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", 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] 9edccd664630c215f9183e46506d868322192fee792e356c9d31a19a37dabb1f
[INFO] running `Command { std: "docker" "start" "-a" "9edccd664630c215f9183e46506d868322192fee792e356c9d31a19a37dabb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9edccd664630c215f9183e46506d868322192fee792e356c9d31a19a37dabb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9edccd664630c215f9183e46506d868322192fee792e356c9d31a19a37dabb1f", kill_on_drop: false }`
[INFO] [stdout] 9edccd664630c215f9183e46506d868322192fee792e356c9d31a19a37dabb1f
[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=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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b30ee75da9685fb369b7344bed0acc059916206647c14b2262c73ba51631a7a
[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" "8b30ee75da9685fb369b7344bed0acc059916206647c14b2262c73ba51631a7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling leveldb-sys v2.0.1
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]     Checking db-key v0.0.5
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr] error: failed to run custom build command for `leveldb-sys v2.0.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/leveldb-sys-0c22e758523b4d8e/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   [build] Started
[INFO] [stderr]   [snappy] Cleaning
[INFO] [stderr]   make: Entering directory '/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/deps/snappy-1.1.2'
[INFO] [stderr]   make: Leaving directory '/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/deps/snappy-1.1.2'
[INFO] [stderr]   [snappy] Configuring
[INFO] [stderr]   [snappy] Building
[INFO] [stderr]   make: Entering directory '/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/deps/snappy-1.1.2'
[INFO] [stderr]   make: Leaving directory '/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/deps/snappy-1.1.2'
[INFO] [stderr]   [build] Copying output files
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   make: *** No rule to make target 'distclean'.  Stop.
[INFO] [stderr]   ./configure: line 2171: config.log: Read-only file system
[INFO] [stderr]   ./configure: line 2181: config.log: Read-only file system
[INFO] [stderr]   make: *** No targets specified and no makefile found.  Stop.
[INFO] [stderr]   thread 'main' panicked at 'copy of output files failed', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/src/build.rs:46:14
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x561c8744ec40 - std::backtrace_rs::backtrace::libunwind::trace::he85dfb3ae4206056
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x561c8744ec40 - std::backtrace_rs::backtrace::trace_unsynchronized::h1ad28094d7b00c21
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x561c8744ec40 - std::sys_common::backtrace::_print_fmt::h901b54610713cd21
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x561c8744ec40 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb0ad78ee1571f7e0
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x561c8746c21c - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]      5:     0x561c8744cb52 - std::io::Write::write_fmt::hf7b7d7b243f84a36
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/io/mod.rs:1516
[INFO] [stderr]      6:     0x561c87450ead - std::sys_common::backtrace::_print::hd093978a5287b8ff
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x561c87450ead - std::sys_common::backtrace::print::h20f46787581d56d7
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x561c87450ead - std::panicking::default_hook::{{closure}}::h486cbb4b82ffc357
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/panicking.rs:208
[INFO] [stderr]      9:     0x561c87450b58 - std::panicking::default_hook::h4190c9e3edd4d591
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/panicking.rs:227
[INFO] [stderr]     10:     0x561c87451531 - std::panicking::rust_panic_with_hook::h72e78719cdda225c
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/panicking.rs:577
[INFO] [stderr]     11:     0x561c874510d9 - std::panicking::begin_panic_handler::{{closure}}::h8bd07dbd34150a96
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/panicking.rs:484
[INFO] [stderr]     12:     0x561c8744f0cc - std::sys_common::backtrace::__rust_end_short_backtrace::hdb6b3066ad29028a
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x561c87451099 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/panicking.rs:483
[INFO] [stderr]     14:     0x561c8746b531 - core::panicking::panic_fmt::hb15d6f55e8472f62
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/core/src/panicking.rs:85
[INFO] [stderr]     15:     0x561c8746b2c3 - core::option::expect_failed::h6bc6a05976f4cb88
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/core/src/option.rs:1226
[INFO] [stderr]     16:     0x561c8743135d - core::option::Option<T>::expect::h062eb5de4b1fc982
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/core/src/option.rs:346
[INFO] [stderr]     17:     0x561c8741ba57 - build_script_build::build_snappy::h852c19a6b08a8c67
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/src/build.rs:46
[INFO] [stderr]     18:     0x561c8741d072 - build_script_build::main::hf562331ff916af9e
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/leveldb-sys-2.0.1/src/build.rs:125
[INFO] [stderr]     19:     0x561c874355ab - core::ops::function::FnOnce::call_once::h1897a42f80ad7b4e
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/core/src/ops/function.rs:227
[INFO] [stderr]     20:     0x561c8742fe8e - std::sys_common::backtrace::__rust_begin_short_backtrace::h21b4950502fdfbd3
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     21:     0x561c874254a1 - std::rt::lang_start::{{closure}}::ha4c4a1a4eb73cd1d
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/rt.rs:66
[INFO] [stderr]     22:     0x561c87451957 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h5e15f43ce28787f7
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/core/src/ops/function.rs:259
[INFO] [stderr]     23:     0x561c87451957 - std::panicking::try::do_call::h764f1891769113e9
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/panicking.rs:381
[INFO] [stderr]     24:     0x561c87451957 - std::panicking::try::h0f2fe4fdd5e0ad19
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/panicking.rs:345
[INFO] [stderr]     25:     0x561c87451957 - std::panic::catch_unwind::h1634e40dd3a19f80
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/panic.rs:382
[INFO] [stderr]     26:     0x561c87451957 - std::rt::lang_start_internal::h8d4bc7b854bbd5fe
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/rt.rs:51
[INFO] [stderr]     27:     0x561c87425477 - std::rt::lang_start::ha21fcaa2f9c74fc9
[INFO] [stderr]                                  at /rustc/0d37dca25a51fb900a402c94c8818ad1c2789e30/library/std/src/rt.rs:65
[INFO] [stderr]     28:     0x561c8741dfaa - main
[INFO] [stderr]     29:     0x7ff1c4e360b3 - __libc_start_main
[INFO] [stderr]     30:     0x561c874160be - _start
[INFO] [stderr]     31:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8b30ee75da9685fb369b7344bed0acc059916206647c14b2262c73ba51631a7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b30ee75da9685fb369b7344bed0acc059916206647c14b2262c73ba51631a7a", kill_on_drop: false }`
[INFO] [stdout] 8b30ee75da9685fb369b7344bed0acc059916206647c14b2262c73ba51631a7a