[INFO] cloning repository https://github.com/metsawyr/basic-multisig
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/metsawyr/basic-multisig" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmetsawyr%2Fbasic-multisig", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmetsawyr%2Fbasic-multisig'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bbfcaba4ca6e99076a7c38155407a9176b6870ce
[INFO] documenting metsawyr/basic-multisig against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmetsawyr%2Fbasic-multisig" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/metsawyr/basic-multisig on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/metsawyr/basic-multisig
[INFO] finished tweaking git repo https://github.com/metsawyr/basic-multisig
[INFO] tweaked toml for git repo https://github.com/metsawyr/basic-multisig written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/metsawyr/basic-multisig already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b9f9a08e90c3713efe6fba23469ab88c351c4b11a2730adac32396c595444a1
[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" "7b9f9a08e90c3713efe6fba23469ab88c351c4b11a2730adac32396c595444a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b9f9a08e90c3713efe6fba23469ab88c351c4b11a2730adac32396c595444a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b9f9a08e90c3713efe6fba23469ab88c351c4b11a2730adac32396c595444a1", kill_on_drop: false }`
[INFO] [stdout] 7b9f9a08e90c3713efe6fba23469ab88c351c4b11a2730adac32396c595444a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] 8cb6c980a3a895ec044a0cad3764d3aa3bad6d2fbc0eb589dc1bf2bc893ffb6d
[INFO] running `Command { std: "docker" "start" "-a" "8cb6c980a3a895ec044a0cad3764d3aa3bad6d2fbc0eb589dc1bf2bc893ffb6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling crc32fast v1.1.2
[INFO] [stderr]    Compiling protobuf v2.3.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling podio v0.1.6
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling subtle v2.0.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling make-cmd v0.1.0
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling os_info v1.1.0
[INFO] [stderr]     Checking static_slice v0.0.3
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]    Compiling v_escape v0.3.2
[INFO] [stderr]    Compiling v_htmlescape v0.3.2
[INFO] [stderr]    Compiling actix-web v0.7.18
[INFO] [stderr]     Checking tower-service v0.1.0
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]    Compiling miniz_oxide v0.2.1
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]     Checking chacha20-poly1305-aead v0.1.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking smallvec v0.6.8
[INFO] [stderr]    Compiling typenum v1.10.0
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[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking memchr v2.1.3
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking signal-hook v0.1.7
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling snow v0.4.2
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking generic-array v0.12.0
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
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[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.4
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking aho-corasick v0.6.9
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[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tokio-retry v0.2.0
[INFO] [stderr]     Checking rand_pcg v0.1.1
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling tar v0.4.20
[INFO] [stderr]    Compiling msdos_time v0.1.6
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]    Compiling nom v4.2.0
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking tokio-io v0.1.11
[INFO] [stderr]     Checking http v0.1.15
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]    Compiling tempfile v3.0.6
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking tokio-reactor v0.1.8
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking ctrlc v3.1.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.11
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking h2 v0.1.16
[INFO] [stderr]     Checking tokio-fs v0.1.5
[INFO] [stderr]     Checking tokio v0.1.15
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]     Checking serde_json v1.0.38
[INFO] [stderr]     Checking rust_decimal v0.10.2
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking erased-serde v0.3.8
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-dns-unofficial v0.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.1
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling exonum_librocksdb-sys v0.5.4
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling flate2 v1.0.6
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]    Compiling curve25519-dalek v1.0.3
[INFO] [stderr] error: failed to run custom build command for `exonum_librocksdb-sys v0.5.4`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/exonum_librocksdb-sys-05791a622c0d7094/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at '"git" "clone" "https://github.com/google/snappy.git"
[INFO] [stderr] 
[INFO] [stderr]   fatal: could not create work tree dir 'snappy': Read-only file system
[INFO] [stderr] 
[INFO] [stderr]   ', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exonum_librocksdb-sys-0.5.4/build.rs:176:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x557a481053f0 - std::backtrace_rs::backtrace::libunwind::trace::h577ea05e9ca4629a
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x557a481053f0 - std::backtrace_rs::backtrace::trace_unsynchronized::h50b9b72b84c7dd56
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x557a481053f0 - std::sys_common::backtrace::_print_fmt::h6541cf9823837fac
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x557a481053f0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf64fbff071026df5
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x557a481257bc - core::fmt::write::h9ddafa4860d8adff
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/fmt/mod.rs:1082
[INFO] [stderr]      5:     0x557a48101747 - std::io::Write::write_fmt::h1d2ee292d2b65481
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/mod.rs:1514
[INFO] [stderr]      6:     0x557a481078e0 - std::sys_common::backtrace::_print::ha25f9ff5080d886d
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x557a481078e0 - std::sys_common::backtrace::print::h213e8aa8dc5405c0
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x557a481078e0 - std::panicking::default_hook::{{closure}}::h6482fae49ef9d963
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:200
[INFO] [stderr]      9:     0x557a4810762c - std::panicking::default_hook::he30ad7589e0970f9
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:219
[INFO] [stderr]     10:     0x557a48107f43 - std::panicking::rust_panic_with_hook::haa1ed36ada4ffb03
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:569
[INFO] [stderr]     11:     0x557a48107b19 - std::panicking::begin_panic_handler::{{closure}}::h7001af1bb21aeaeb
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:476
[INFO] [stderr]     12:     0x557a4810587c - std::sys_common::backtrace::__rust_end_short_backtrace::h39910f557f5f2367
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x557a48107ad9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:475
[INFO] [stderr]     14:     0x557a48107a8b - std::panicking::begin_panic_fmt::hc1b1320af38b7e12
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:429
[INFO] [stderr]     15:     0x557a4802c80c - build_script_build::get_sources::h3439085cc6c804b6
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exonum_librocksdb-sys-0.5.4/build.rs:176
[INFO] [stderr]     16:     0x557a4802cfb6 - build_script_build::main::h492d0a8c7e24f15e
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exonum_librocksdb-sys-0.5.4/build.rs:212
[INFO] [stderr]     17:     0x557a4803052b - core::ops::function::FnOnce::call_once::he6c04921103233ab
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stderr]     18:     0x557a4802debe - std::sys_common::backtrace::__rust_begin_short_backtrace::h3a0117cb7b820d6a
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     19:     0x557a4802e7f1 - std::rt::lang_start::{{closure}}::h9b9b33ac9328d975
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:66
[INFO] [stderr]     20:     0x557a48108411 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h6a3209f124be2235
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:259
[INFO] [stderr]     21:     0x557a48108411 - std::panicking::try::do_call::h88ce358792b64df0
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stderr]     22:     0x557a48108411 - std::panicking::try::h6311c259678e50fc
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stderr]     23:     0x557a48108411 - std::panic::catch_unwind::h56c5716807d659a1
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stderr]     24:     0x557a48108411 - std::rt::lang_start_internal::h73711f37ecfcb277
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:51
[INFO] [stderr]     25:     0x557a4802e7c7 - std::rt::lang_start::h77bc16da33a0c794
[INFO] [stderr]                                  at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/rt.rs:65
[INFO] [stderr]     26:     0x557a4802d0aa - main
[INFO] [stderr]     27:     0x7ff096eab0b3 - __libc_start_main
[INFO] [stderr]     28:     0x557a4802b0be - _start
[INFO] [stderr]     29:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8cb6c980a3a895ec044a0cad3764d3aa3bad6d2fbc0eb589dc1bf2bc893ffb6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb6c980a3a895ec044a0cad3764d3aa3bad6d2fbc0eb589dc1bf2bc893ffb6d", kill_on_drop: false }`
[INFO] [stdout] 8cb6c980a3a895ec044a0cad3764d3aa3bad6d2fbc0eb589dc1bf2bc893ffb6d
