Caused by:

  process didn't exit successfully:
  `/WRKOBJDIR/lang/rust/work/rust-1.19.0-x86_64-unknown-netbsd/rustc/bin/rustc
  - --crate-name ___ --print=file-names --crate-type bin --crate-type
  rlib --target x86_64-unknown-netbsd` (exit code: 101)
--- stderr
error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report:
https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

thread 'rustc' panicked at 'failed to get current_exe: No such file or
directory (os error 2)',
/checkout/src/librustc/session/filesearch.rs:169

note: Run with `RUST_BACKTRACE=1` for a backtrace.


Traceback (most recent call last):
  File "./x.py", line 20, in <module>
    bootstrap.main()
  File "/WRKOBJDIR/lang/rust/work/rustc-1.20.0-src/src/bootstrap/bootstrap.py", line 694, in main
    bootstrap()
  File "/WRKOBJDIR/lang/rust/work/rustc-1.20.0-src/src/bootstrap/bootstrap.py", line 675, in bootstrap
    rb.build_bootstrap()
  File
  "/WRKOBJDIR/lang/rust/work/rustc-1.20.0-src/src/bootstrap/bootstrap.py",
  line 423, in build_bootstrap

    run(args, env=env, verbose=self.verbose)
  File "/WRKOBJDIR/lang/rust/work/rustc-1.20.0-src/src/bootstrap/bootstrap.py", line 147, in run
    raise RuntimeError(err)

RuntimeError: failed to run:
  /WRKOBJDIR/lang/rust/work/rust-1.19.0-x86_64-unknown-netbsd/cargo/bin/cargo
  build --manifest-path
  /WRKOBJDIR/lang/rust/work/rustc-1.20.0-src/src/bootstrap/Cargo.toml
  --verbose --verbose --frozen

*** Error code 1

Stop.
make[1]: stopped in /usr/pkgsrc/lang/rust
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/lang/rust

＠ after /procfs mounted:

CF-SX2# cat /etc/fstab 
procfs          /proc   procfs  rw
kernfs          /kern   kernfs  rw
ptyfs           /dev/pts        ptyfs   rw

cess abort signal)
--- stderr
thread '<unnamed>' panicked at 'there is no guard page', /checkout/src/libstd/sys/unix/thread.rs:329
note: Run with `RUST_BACKTRACE=1` for a backtrace.
fatal runtime error: failed to initiate panic, error 5

Traceback (most recent call last):
  File "x.py", line 20, in <module>
    bootstrap.main()
  File "/WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/src/bootstrap/bootstrap.py", line 678, in main
    bootstrap()
  File "/WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/src/bootstrap/bootstrap.py", line 660, in bootstrap
    rb.build_bootstrap()
  File "/WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/src/bootstrap/bootstrap.py", line 413, in build_bootstrap
    run(args, env=env, verbose=self.verbose)
  File "/WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/src/bootstrap/bootstrap.py", line 142, in run
    raise RuntimeError(err)

RuntimeError: failed to run:
  /WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/build/x86_64-unknown-netbsd/stage0/bin/cargo
  build --manifest-path   /WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/src/bootstrap/Cargo.toml
  --verbose --froze

*** Error code 1

Stop.
make[1]: stopped in /usr/pkgsrc/wip/rust
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/wip/rust

CF-SX2#
  /WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/build/x86_64-unknown-netbsd/stage0/bin/cargo
  build --manifest-path /WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/src/bootstrap/Cargo.toml
  --verbose --frozen

error: attempting to make an HTTP request, but --frozen was specified

CF-SX2# /WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/build/x86_64-unknown-netbsd/stage0/bin/rustc -vV
thread '<unnamed>' panicked at 'there is no guard page', /checkout/src/libstd/sys/unix/thread.rs:329
note: Run with `RUST_BACKTRACE=1` for a backtrace.
fatal runtime error: failed to initiate panic, error 5
zsh: abort (core dumped)   -vV

CF-SX2# env RUST_BACKTRACE=1 /WRKOBJDIR/wip/rust/work/rustc-1.19.0-src/build/x86_64-unknown-netbsd/stage0/bin/rustc -vV
thread '<unnamed>' panicked at 'there is no guard page', /checkout/src/libstd/sys/unix/thread.rs:329
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at /checkout/src/libstd/sys_common/backtrace.rs:71
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/sys_common/backtrace.rs:60
             at /checkout/src/libstd/panicking.rs:355
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:371
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:549
   5: std::panicking::begin_panic
             at /checkout/src/libstd/panicking.rs:511
   6: std::sys::imp::thread::guard::current
             at /checkout/src/libstd/sys/unix/thread.rs:329
   7: <F as alloc::boxed::FnBox<A>>::call_box
   8: std::sys::imp::thread::Thread::new::thread_start
             at /checkout/src/liballoc/boxed.rs:650
             at /checkout/src/libstd/sys_common/thread.rs:21
             at /checkout/src/libstd/sys/unix/thread.rs:84
   9: <unknown>
  10: <unknown>
fatal runtime error: failed to initiate panic, error 5
zsh: abort (core dumped)  env RUST_BACKTRACE=1  -vV
CF-SX2# 

CF-SX2# make build-env
=> Bootstrap dependency digest>=20010302: found digest-20160304
===> Skipping vulnerability checks.
WARNING: No /var/db/pkg/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /var/db/pkg fetch-pkg-vulnerabilities'.
=> Entering the build environment for emacs-w3m-1.4.50nb20171006
# pwd
/WRKOBJDIR/wip/emacs-w3m-cvs/work/emacs-w3m

#  /usr/pkg/bin/emacs -q -no-site-file -batch -l w3mhack.el 'NONE' -f w3mhack-print-status
Warning: Lisp directory
  '/WRKOBJDIR/wip/emacs-w3m-cvs/work/.buildlink/share/emacs/27.0/lisp':
  No such file or directory
Warning: Could not find simple.el or simple.elc
The EMACSLOADPATH environment variable is set, please check its value
Cannot open load file: No such file or directory, cl
#