[INFO] fetching crate serde_rustler 0.1.0...
[INFO] checking serde_rustler-0.1.0 against master#0dce3f606e05cffab7361c132a399d3550ab0df8 for pr-78376
[INFO] extracting crate serde_rustler 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate serde_rustler 0.1.0 on toolchain 0dce3f606e05cffab7361c132a399d3550ab0df8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_rustler 0.1.0
[INFO] finished tweaking crates.io crate serde_rustler 0.1.0
[INFO] tweaked toml for crates.io crate serde_rustler 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf9257ea7e43470dc434648e3bd0c63ce811bf73e70d5ab7bfd9aa33ce298cef
[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" "cf9257ea7e43470dc434648e3bd0c63ce811bf73e70d5ab7bfd9aa33ce298cef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf9257ea7e43470dc434648e3bd0c63ce811bf73e70d5ab7bfd9aa33ce298cef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf9257ea7e43470dc434648e3bd0c63ce811bf73e70d5ab7bfd9aa33ce298cef", kill_on_drop: false }`
[INFO] [stdout] cf9257ea7e43470dc434648e3bd0c63ce811bf73e70d5ab7bfd9aa33ce298cef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83f0660d3e494d24a7e50e0b3b5987d0fb45e7a0a850610463ec215f2ba59f49
[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" "83f0660d3e494d24a7e50e0b3b5987d0fb45e7a0a850610463ec215f2ba59f49", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling rustler_sys v2.1.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling addr2line v0.14.0
[INFO] [stderr]    Compiling backtrace v0.3.54
[INFO] [stderr]    Compiling rustler_codegen v0.21.1
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling rustler v0.21.1
[INFO] [stderr] error: failed to run custom build command for `rustler v0.21.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustler-ba495f5bd9e6dff6/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'expected to find 'erl' executable: Error { inner:    0: failure::backtrace::internal::InternalBacktrace::new
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.8/src/backtrace/internal.rs:46:44
[INFO] [stderr]      1: failure::backtrace::Backtrace::new
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.8/src/backtrace/mod.rs:121:35
[INFO] [stderr]      2: failure::context::Context<D>::new
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/failure-0.1.8/src/context.rs:84:40
[INFO] [stderr]      3: <which::error::Error as core::convert::From<which::error::ErrorKind>>::from
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/which-2.0.1/src/error.rs:59:20
[INFO] [stderr]      4: <T as core::convert::Into<U>>::into
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/convert/mod.rs:546:9
[INFO] [stderr]      5: which::finder::Finder::find
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/which-2.0.1/src/finder.rs:85:20
[INFO] [stderr]      6: which::which_in
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/which-2.0.1/src/lib.rs:83:5
[INFO] [stderr]      7: which::which
[INFO] [stderr]                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/which-2.0.1/src/lib.rs:67:5
[INFO] [stderr]      8: build_script_build::get_version_from_erl
[INFO] [stderr]                at build.rs:28:15
[INFO] [stderr]      9: build_script_build::main
[INFO] [stderr]                at build.rs:21:19
[INFO] [stderr]     10: core::ops::function::FnOnce::call_once
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     11: std::sys_common::backtrace::__rust_begin_short_backtrace
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     12: std::rt::lang_start::{{closure}}
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/rt.rs:66:18
[INFO] [stderr]     13: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/ops/function.rs:259:13
[INFO] [stderr]         std::panicking::try::do_call
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:381:40
[INFO] [stderr]         std::panicking::try
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:345:19
[INFO] [stderr]         std::panic::catch_unwind
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panic.rs:382:14
[INFO] [stderr]         std::rt::lang_start_internal
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/rt.rs:51:25
[INFO] [stderr]     14: std::rt::lang_start
[INFO] [stderr]                at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/rt.rs:65:5
[INFO] [stderr]     15: main
[INFO] [stderr]     16: __libc_start_main
[INFO] [stderr]     17: _start
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   Cannot find binary path }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustler-0.21.1/build.rs:28:28
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55a6d0e35090 - std::backtrace_rs::backtrace::libunwind::trace::h448c56741b6011d3
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:100:5
[INFO] [stderr]      1:     0x55a6d0e35090 - std::backtrace_rs::backtrace::trace_unsynchronized::h881b9d30a8a89a0c
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55a6d0e35090 - std::sys_common::backtrace::_print_fmt::h720a2f61f75b9f58
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55a6d0e35090 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8d62bbfda6d5c836
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55a6d0e52bec - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/fmt/mod.rs:1076:17
[INFO] [stderr]      5:     0x55a6d0e323b2 - std::io::Write::write_fmt::h16a9fe7680ac245c
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/io/mod.rs:1516:15
[INFO] [stderr]      6:     0x55a6d0e37435 - std::sys_common::backtrace::_print::h9ba51a6db618de7d
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55a6d0e37435 - std::sys_common::backtrace::print::h5f20e41c85e91716
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55a6d0e37435 - std::panicking::default_hook::{{closure}}::h8d48653392f3b04c
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55a6d0e370d8 - std::panicking::default_hook::hb3948d1f74b6ff4c
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:227:9
[INFO] [stderr]     10:     0x55a6d0e37bd1 - std::panicking::rust_panic_with_hook::h55d23fef0ad751bc
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:593:17
[INFO] [stderr]     11:     0x55a6d0e37717 - std::panicking::begin_panic_handler::{{closure}}::h56ae74c6dea6e141
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:499:13
[INFO] [stderr]     12:     0x55a6d0e3552c - std::sys_common::backtrace::__rust_end_short_backtrace::h3c4721f56689fae4
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55a6d0e37679 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:495:5
[INFO] [stderr]     14:     0x55a6d0e51f01 - core::panicking::panic_fmt::hb15d6f55e8472f62
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55a6d0e51d23 - core::option::expect_none_failed::he492a18657d97593
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/option.rs:1268:5
[INFO] [stderr]     16:     0x55a6d0d4d0d8 - core::result::Result<T,E>::expect::h08835f2de690d437
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/result.rs:933:23
[INFO] [stderr]     17:     0x55a6d0d45252 - build_script_build::get_version_from_erl::h7165ab3b58d63206
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustler-0.21.1/build.rs:28:15
[INFO] [stderr]     18:     0x55a6d0d450e6 - build_script_build::main::hcfe78574269cc06d
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustler-0.21.1/build.rs:21:19
[INFO] [stderr]     19:     0x55a6d0d43d2b - core::ops::function::FnOnce::call_once::hadb40a8ae57720b6
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x55a6d0d46bde - std::sys_common::backtrace::__rust_begin_short_backtrace::hc34efa37dd1c26c7
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     21:     0x55a6d0d4ec81 - std::rt::lang_start::{{closure}}::he9dcd8a4d6fbce5f
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/rt.rs:66:18
[INFO] [stderr]     22:     0x55a6d0e37ff7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3f3ba5d1e0ce8d49
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x55a6d0e37ff7 - std::panicking::try::do_call::hd7a374fc87b951e7
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:381:40
[INFO] [stderr]     24:     0x55a6d0e37ff7 - std::panicking::try::hcc68eba0f7d51b82
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panicking.rs:345:19
[INFO] [stderr]     25:     0x55a6d0e37ff7 - std::panic::catch_unwind::h2e8cfcfcf4f9eb6d
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/panic.rs:382:14
[INFO] [stderr]     26:     0x55a6d0e37ff7 - std::rt::lang_start_internal::h8ff82302dd620b52
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/rt.rs:51:25
[INFO] [stderr]     27:     0x55a6d0d4ec57 - std::rt::lang_start::h3f0e77e2e9f2648b
[INFO] [stderr]                                  at /rustc/0dce3f606e05cffab7361c132a399d3550ab0df8/library/std/src/rt.rs:65:5
[INFO] [stderr]     28:     0x55a6d0d45a9a - main
[INFO] [stderr]     29:     0x7fd4325d00b3 - __libc_start_main
[INFO] [stderr]     30:     0x55a6d0d410be - _start
[INFO] [stderr]     31:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "83f0660d3e494d24a7e50e0b3b5987d0fb45e7a0a850610463ec215f2ba59f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83f0660d3e494d24a7e50e0b3b5987d0fb45e7a0a850610463ec215f2ba59f49", kill_on_drop: false }`
[INFO] [stdout] 83f0660d3e494d24a7e50e0b3b5987d0fb45e7a0a850610463ec215f2ba59f49