[INFO] cloning repository https://github.com/yusong0625/Sala2.Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yusong0625/Sala2.Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyusong0625%2FSala2.Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyusong0625%2FSala2.Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cb07344eac557b282e6b26630b3e9e2823fa4fe
[INFO] documenting yusong0625/Sala2.Rust against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyusong0625%2FSala2.Rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yusong0625/Sala2.Rust on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking git repo https://github.com/yusong0625/Sala2.Rust
[INFO] finished tweaking git repo https://github.com/yusong0625/Sala2.Rust
[INFO] tweaked toml for git repo https://github.com/yusong0625/Sala2.Rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/yusong0625/Sala2.Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustler v0.21.1
[INFO] [stderr]   Downloaded rustler_sys v2.1.0
[INFO] [stderr]   Downloaded rustler_codegen v0.21.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 05bbb40043dbd0d98cb162065f73d6fe76a462b135a557e2c2785eac2eee197a
[INFO] running `Command { std: "docker" "start" "-a" "05bbb40043dbd0d98cb162065f73d6fe76a462b135a557e2c2785eac2eee197a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05bbb40043dbd0d98cb162065f73d6fe76a462b135a557e2c2785eac2eee197a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05bbb40043dbd0d98cb162065f73d6fe76a462b135a557e2c2785eac2eee197a", kill_on_drop: false }`
[INFO] [stdout] 05bbb40043dbd0d98cb162065f73d6fe76a462b135a557e2c2785eac2eee197a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 4a59322f905f1ce7cba38efd2d663aadadc169044aebf7600ebf4034dda7ecdc
[INFO] running `Command { std: "docker" "start" "-a" "4a59322f905f1ce7cba38efd2d663aadadc169044aebf7600ebf4034dda7ecdc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling object v0.20.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rustler_sys v2.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling addr2line v0.12.1
[INFO] [stderr]    Compiling backtrace v0.3.49
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling rustler_codegen v0.21.1
[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-0abd161840104ce6/build-script-build` (exit status: 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/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/convert/mod.rs:550
[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: core::ops::function::FnOnce::call_once
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/ops/function.rs:227
[INFO] [stderr]     11: std::sys_common::backtrace::__rust_begin_short_backtrace
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/sys_common/backtrace.rs:122
[INFO] [stderr]     12: std::rt::lang_start::{{closure}}
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/rt.rs:145
[INFO] [stderr]     13: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/ops/function.rs:259
[INFO] [stderr]         std::panicking::try::do_call
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:492
[INFO] [stderr]         std::panicking::try
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:456
[INFO] [stderr]         std::panic::catch_unwind
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panic.rs:137
[INFO] [stderr]         std::rt::lang_start_internal::{{closure}}
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/rt.rs:128
[INFO] [stderr]         std::panicking::try::do_call
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:492
[INFO] [stderr]         std::panicking::try
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:456
[INFO] [stderr]         std::panic::catch_unwind
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panic.rs:137
[INFO] [stderr]         std::rt::lang_start_internal
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/rt.rs:128
[INFO] [stderr]     14: std::rt::lang_start
[INFO] [stderr]                at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/rt.rs:144
[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:     0x56309b2b87ad - std::backtrace_rs::backtrace::libunwind::trace::h22893a5306c091b4
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr]      1:     0x56309b2b87ad - std::backtrace_rs::backtrace::trace_unsynchronized::h29c3bc6f9e91819d
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x56309b2b87ad - std::sys_common::backtrace::_print_fmt::he497d8a0ec903793
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x56309b2b87ad - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h9c2a9d2774d81873
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x56309b2d65cc - core::fmt::write::hba4337c43d992f49
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/fmt/mod.rs:1194:17
[INFO] [stderr]      5:     0x56309b2b5b41 - std::io::Write::write_fmt::heb73de6e02cfabed
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/io/mod.rs:1655:15
[INFO] [stderr]      6:     0x56309b2ba105 - std::sys_common::backtrace::_print::h63c8b24acdd8e8ce
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x56309b2ba105 - std::sys_common::backtrace::print::h426700d6240cdcc2
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x56309b2ba105 - std::panicking::default_hook::{{closure}}::hc9a76eed0b18f82b
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:295:22
[INFO] [stderr]      9:     0x56309b2b9db9 - std::panicking::default_hook::h2e88d02087fae196
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:314:9
[INFO] [stderr]     10:     0x56309b2ba652 - std::panicking::rust_panic_with_hook::habfdcc2e90f9fd4c
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:698:17
[INFO] [stderr]     11:     0x56309b2ba537 - std::panicking::begin_panic_handler::{{closure}}::he054b2a83a51d2cd
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:588:13
[INFO] [stderr]     12:     0x56309b2b8c64 - std::sys_common::backtrace::__rust_end_short_backtrace::ha48b94ab49b30915
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x56309b2ba269 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:584:5
[INFO] [stderr]     14:     0x56309b1d3563 - core::panicking::panic_fmt::h366d3a309ae17c94
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/panicking.rs:143:14
[INFO] [stderr]     15:     0x56309b1d35f3 - core::result::unwrap_failed::hddd78f4658ac7d0f
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/result.rs:1785:5
[INFO] [stderr]     16:     0x56309b1e2609 - core::result::Result<T,E>::expect::h1e03d4a0f77c6325
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/result.rs:1035:23
[INFO] [stderr]     17:     0x56309b1d5ac9 - build_script_build::get_version_from_erl::hb4a64a719cc906de
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustler-0.21.1/build.rs:28:15
[INFO] [stderr]     18:     0x56309b1d59c2 - build_script_build::main::hcfba69bd1e049ba1
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustler-0.21.1/build.rs:21:19
[INFO] [stderr]     19:     0x56309b1dedab - core::ops::function::FnOnce::call_once::hca1c4e80842874fb
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x56309b1d6c1e - std::sys_common::backtrace::__rust_begin_short_backtrace::h18b99f444fea797d
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     21:     0x56309b1e1fa1 - std::rt::lang_start::{{closure}}::h8f9f26068001f805
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/rt.rs:145:18
[INFO] [stderr]     22:     0x56309b2b268e - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::had4f69b3aefb47a8
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x56309b2b268e - std::panicking::try::do_call::hf2ad5355fcafe775
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:492:40
[INFO] [stderr]     24:     0x56309b2b268e - std::panicking::try::h0a63ac363423e61e
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:456:19
[INFO] [stderr]     25:     0x56309b2b268e - std::panic::catch_unwind::h18088edcecb8693a
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panic.rs:137:14
[INFO] [stderr]     26:     0x56309b2b268e - std::rt::lang_start_internal::{{closure}}::ha7dad166dc711761
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/rt.rs:128:48
[INFO] [stderr]     27:     0x56309b2b268e - std::panicking::try::do_call::hda0c61bf3a57d6e6
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:492:40
[INFO] [stderr]     28:     0x56309b2b268e - std::panicking::try::hbc940e68560040a9
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:456:19
[INFO] [stderr]     29:     0x56309b2b268e - std::panic::catch_unwind::haed0df2aeb3fa368
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panic.rs:137:14
[INFO] [stderr]     30:     0x56309b2b268e - std::rt::lang_start_internal::h9c06694362b5b80c
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/rt.rs:128:20
[INFO] [stderr]     31:     0x56309b1e1f70 - std::rt::lang_start::h5961630401fd3024
[INFO] [stderr]                                  at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/rt.rs:144:17
[INFO] [stderr]     32:     0x56309b1d62dc - main
[INFO] [stderr]     33:     0x7f42be8c80b3 - __libc_start_main
[INFO] [stderr]     34:     0x56309b1d375e - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4a59322f905f1ce7cba38efd2d663aadadc169044aebf7600ebf4034dda7ecdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a59322f905f1ce7cba38efd2d663aadadc169044aebf7600ebf4034dda7ecdc", kill_on_drop: false }`
[INFO] [stdout] 4a59322f905f1ce7cba38efd2d663aadadc169044aebf7600ebf4034dda7ecdc