[INFO] updating cached repository AffogatoLang/moka-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/AffogatoLang/moka-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/AffogatoLang/moka-rust" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/AffogatoLang/moka-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/AffogatoLang/moka-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AffogatoLang/moka-rust" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/AffogatoLang/moka-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/AffogatoLang/moka-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e1bad1d529682827a44b75ceccedb7069d5cce16
[INFO] sha for GitHub repo AffogatoLang/moka-rust: e1bad1d529682827a44b75ceccedb7069d5cce16
[INFO] validating manifest of AffogatoLang/moka-rust on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of AffogatoLang/moka-rust on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing AffogatoLang/moka-rust
[INFO] finished frobbing AffogatoLang/moka-rust
[INFO] frobbed toml for AffogatoLang/moka-rust written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/AffogatoLang/moka-rust/Cargo.toml
[INFO] started frobbing AffogatoLang/moka-rust
[INFO] finished frobbing AffogatoLang/moka-rust
[INFO] frobbed toml for AffogatoLang/moka-rust written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/AffogatoLang/moka-rust/Cargo.toml
[INFO] crate AffogatoLang/moka-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking AffogatoLang/moka-rust against master#435236b8877cdb98c82eaebfb7887782277265c5 for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-2/master#435236b8877cdb98c82eaebfb7887782277265c5:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/AffogatoLang/moka-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d8d25d83fb41dadd33df08f8f066771f4c2aec9f3b490b9fda33bb894f95560d
[INFO] running `"docker" "start" "-a" "d8d25d83fb41dadd33df08f8f066771f4c2aec9f3b490b9fda33bb894f95560d"`
[INFO] [stderr]     Checking enum-set v0.0.7
[INFO] [stderr]    Compiling bzip2-sys v0.1.6
[INFO] [stderr]     Checking serde_json v1.0.7
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]    Compiling walkdir v0.1.8
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]    Compiling moka_rust v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/build.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |             fs::create_dir_all(&target_dir.parent().unwrap());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] error: failed to run custom build command for `moka_rust v0.1.2 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/moka_rust-adbfbe048e6b4633/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] "./target/debug"
[INFO] [stderr] Target output: "./target/debug/./resources/py_env/interp_runner.py"
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Box<Any>', src/build.rs:29:79
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5566a2b4926b - backtrace::backtrace::libunwind::trace::h88d9499c2d7e1dbc
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x5566a2b4926b - backtrace::backtrace::trace_unsynchronized::h64df3798ffaf338f
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5566a2b4926b - std::sys_common::backtrace::_print::h549f3692f8d3f393
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x5566a2b4926b - std::sys_common::backtrace::print::h037f1d7e6e0e94de
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x5566a2b4926b - std::panicking::default_hook::{{closure}}::h88a39cbd1a8489c9
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x5566a2b48f46 - std::panicking::default_hook::hdb7c9c6632585072
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x5566a2b4992d - std::panicking::rust_panic_with_hook::h906f2b0ace338868
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x5566a2b24e05 - std::panicking::begin_panic::hfb424df2fa07949e
[INFO] [stderr]                                at /rustc/435236b8877cdb98c82eaebfb7887782277265c5/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x5566a2b20b2d - build_script_build::main::{{closure}}::h0b6af400185b6988
[INFO] [stderr]                                at src/build.rs:29
[INFO] [stderr]    9:     0x5566a2b21467 - core::result::Result<T,E>::unwrap_or_else::h0ab5f242347cc8b0
[INFO] [stderr]                                at /rustc/435236b8877cdb98c82eaebfb7887782277265c5/src/libcore/result.rs:818
[INFO] [stderr]   10:     0x5566a2b202f7 - build_script_build::main::h1886ed82a2cb32dd
[INFO] [stderr]                                at src/build.rs:29
[INFO] [stderr]   11:     0x5566a2b21920 - std::rt::lang_start::{{closure}}::hd1bc82eb944c3706
[INFO] [stderr]                                at /rustc/435236b8877cdb98c82eaebfb7887782277265c5/src/libstd/rt.rs:64
[INFO] [stderr]   12:     0x5566a2b49383 - std::rt::lang_start_internal::{{closure}}::h9ea1b9f2bce8ffef
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   13:     0x5566a2b49383 - std::panicking::try::do_call::hfbd18154d6e81e0d
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   14:     0x5566a2b4bbea - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   15:     0x5566a2b49e3d - std::panicking::try::h9cb4b237371abf81
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   16:     0x5566a2b49e3d - std::panic::catch_unwind::hd403853a39b4e3c9
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   17:     0x5566a2b49e3d - std::rt::lang_start_internal::h7e5e162b169a1510
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   18:     0x5566a2b218f9 - std::rt::lang_start::h9dff1fc28bb7b24c
[INFO] [stderr]                                at /rustc/435236b8877cdb98c82eaebfb7887782277265c5/src/libstd/rt.rs:64
[INFO] [stderr]   19:     0x5566a2b20f7a - main
[INFO] [stderr]   20:     0x7fa904ad12e1 - __libc_start_main
[INFO] [stderr]   21:     0x5566a2b1fada - _start
[INFO] [stderr]   22:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d8d25d83fb41dadd33df08f8f066771f4c2aec9f3b490b9fda33bb894f95560d"`
[INFO] running `"docker" "rm" "-f" "d8d25d83fb41dadd33df08f8f066771f4c2aec9f3b490b9fda33bb894f95560d"`
[INFO] [stdout] d8d25d83fb41dadd33df08f8f066771f4c2aec9f3b490b9fda33bb894f95560d