[INFO] fetching crate rustler 0.21.1...
[INFO] checking rustler-0.21.1 against master#e22b61bff0bdd08be7665607cb7be3748c8a35d2 for pr-74627
[INFO] extracting crate rustler 0.21.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rustler 0.21.1 on toolchain e22b61bff0bdd08be7665607cb7be3748c8a35d2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustler 0.21.1
[INFO] finished tweaking crates.io crate rustler 0.21.1
[INFO] tweaked toml for crates.io crate rustler 0.21.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c416bdddf869ec99e23f5c16b514ac9166210c48c740decf7e6626c6be0e7b48
[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" "c416bdddf869ec99e23f5c16b514ac9166210c48c740decf7e6626c6be0e7b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c416bdddf869ec99e23f5c16b514ac9166210c48c740decf7e6626c6be0e7b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c416bdddf869ec99e23f5c16b514ac9166210c48c740decf7e6626c6be0e7b48", kill_on_drop: false }`
[INFO] [stdout] c416bdddf869ec99e23f5c16b514ac9166210c48c740decf7e6626c6be0e7b48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c46cbffe43b47edf0fdec8fe862b13c2ccb47add31f2aa2a7f2a50f054e22e67
[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" "c46cbffe43b47edf0fdec8fe862b13c2ccb47add31f2aa2a7f2a50f054e22e67", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling gimli v0.22.0
[INFO] [stderr]    Compiling object v0.20.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling rustler_sys v2.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.0
[INFO] [stderr]    Compiling addr2line v0.13.0
[INFO] [stderr]    Compiling rustler_codegen v0.21.1
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling rustler v0.21.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `rustler v0.21.1 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustler-122645821179217b/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
[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
[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
[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
[INFO] [stderr]      4: <T as core::convert::Into<U>>::into
[INFO] [stderr]                at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/convert/mod.rs:563
[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
[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
[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
[INFO] [stderr]      8: build_script_build::get_version_from_erl
[INFO] [stderr]                at build.rs:28
[INFO] [stderr]      9: build_script_build::main
[INFO] [stderr]                at build.rs:21
[INFO] [stderr]     10: std::rt::lang_start::{{closure}}
[INFO] [stderr]                at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:67
[INFO] [stderr]     11: std::rt::lang_start_internal::{{closure}}
[INFO] [stderr]                at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:52
[INFO] [stderr]         std::panicking::try::do_call
[INFO] [stderr]                at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:348
[INFO] [stderr]         std::panicking::try
[INFO] [stderr]                at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:325
[INFO] [stderr]         std::panic::catch_unwind
[INFO] [stderr]                at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panic.rs:394
[INFO] [stderr]         std::rt::lang_start_internal
[INFO] [stderr]                at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:51
[INFO] [stderr]     12: std::rt::lang_start
[INFO] [stderr]                at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:67
[INFO] [stderr]     13: main
[INFO] [stderr]     14: __libc_start_main
[INFO] [stderr]     15: _start
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   Cannot find binary path }', build.rs:28:28
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x564bdbbc547f - std::backtrace_rs::backtrace::libunwind::trace::h8864605b5c3dbe2c
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x564bdbbc547f - std::backtrace_rs::backtrace::trace_unsynchronized::h1f622efed412f077
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x564bdbbc547f - std::sys_common::backtrace::_print_fmt::h8e17da323f21cc2b
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]      3:     0x564bdbbc547f - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd4a7293426badf40
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x564bdbbe3cdc - core::fmt::write::hfbd2baad61ed21a8
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/fmt/mod.rs:1117
[INFO] [stderr]      5:     0x564bdbbc28f2 - std::io::Write::write_fmt::h54828fb1bd41a052
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/io/mod.rs:1508
[INFO] [stderr]      6:     0x564bdbbc79d0 - std::sys_common::backtrace::_print::h6ba0300926b9fb58
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x564bdbbc79d0 - std::sys_common::backtrace::print::hd11f0188385cb859
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x564bdbbc79d0 - std::panicking::default_hook::{{closure}}::h57b45fcdc30fe8e4
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x564bdbbc771c - std::panicking::default_hook::h067cd795bad37ff3
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x564bdbbc8013 - std::panicking::rust_panic_with_hook::hd1b93581b69959be
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x564bdbbc7c0b - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:437
[INFO] [stderr]     12:     0x564bdbbe30e1 - core::panicking::panic_fmt::h9cc57011b345cfad
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/panicking.rs:85
[INFO] [stderr]     13:     0x564bdbbe2f03 - core::option::expect_none_failed::h10abb5a6aef32df8
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/option.rs:1273
[INFO] [stderr]     14:     0x564bdbae1c48 - core::result::Result<T,E>::expect::hcf58d7fb746c419e
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libcore/result.rs:963
[INFO] [stderr]     15:     0x564bdbae4143 - build_script_build::get_version_from_erl::h0a8a8cfadd1e8886
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:28
[INFO] [stderr]     16:     0x564bdbae3fc4 - build_script_build::main::hf17bfe0046784873
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:21
[INFO] [stderr]     17:     0x564bdbae26bb - std::rt::lang_start::{{closure}}::hdd10098afa5db58e
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:67
[INFO] [stderr]     18:     0x564bdbbc83e3 - std::rt::lang_start_internal::{{closure}}::h9a7ec4d0a4846786
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:52
[INFO] [stderr]     19:     0x564bdbbc83e3 - std::panicking::try::do_call::h31d9073533c95062
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:348
[INFO] [stderr]     20:     0x564bdbbc83e3 - std::panicking::try::h9be90170880ba1d0
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panicking.rs:325
[INFO] [stderr]     21:     0x564bdbbc83e3 - std::panic::catch_unwind::hba3ee29aa4d47586
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/panic.rs:394
[INFO] [stderr]     22:     0x564bdbbc83e3 - std::rt::lang_start_internal::h90880417661a7eb6
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:51
[INFO] [stderr]     23:     0x564bdbae2697 - std::rt::lang_start::ha1a1757f9bbd17b9
[INFO] [stderr]                                  at /rustc/e22b61bff0bdd08be7665607cb7be3748c8a35d2/src/libstd/rt.rs:67
[INFO] [stderr]     24:     0x564bdbae49da - main
[INFO] [stderr]     25:     0x7f06f9ff80b3 - __libc_start_main
[INFO] [stderr]     26:     0x564bdbad50be - _start
[INFO] [stderr]     27:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "c46cbffe43b47edf0fdec8fe862b13c2ccb47add31f2aa2a7f2a50f054e22e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c46cbffe43b47edf0fdec8fe862b13c2ccb47add31f2aa2a7f2a50f054e22e67", kill_on_drop: false }`
[INFO] [stdout] c46cbffe43b47edf0fdec8fe862b13c2ccb47add31f2aa2a7f2a50f054e22e67