rustc panic: 'adding a def'n for node-id ... previous def'n exists

[jeiea]

I just tried building minhook-rs and got the following error message.

$ cargo build --verbose
       Fresh lazy_static v0.2.4
       Fresh gcc v0.3.43
       Fresh winapi v0.2.8
       Fresh winapi-build v0.1.1
       Fresh libc v0.2.21
       Fresh kernel32-sys v0.2.2
   Compiling minhook v0.1.0 (file:///D:/minhook-rs)
     Running `rustc --crate-name minhook 'src\lib.rs' --crate-type lib --emit=dep-info,link -C debuginfo=2 -C metadata=384f87550bb58999 -C extra-filename=-384f87550bb58999 --out-dir 'D:\minhook-rs\target\debug\deps' -L 'dependency=D:\minhook-rs\target\debug\deps' --extern 'libc=D:\minhook-rs\target\debug\deps\liblibc-5dc7b85e748840b4.rlib' --extern 'winapi=D:\minhook-rs\target\debug\deps\libwinapi-a5898d7aceb63fac.rlib' --extern 'lazy_static=D:\minhook-rs\target\debug\deps\liblazy_static-ab7caa853791a68a.rlib' --extern 'kernel32=D:\minhook-rs\target\debug\deps\libkernel32-835ed4d4f4dc2d3e.rlib' -L 'native=D:\minhook-rs\target\debug\build\minhook-ad589a5fdd12ea38\out' -l static=minhook`
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

note: run with `RUST_BACKTRACE=1` for a backtrace

thread 'rustc' panicked at 'adding a def'n for node-id NodeId(141) and data Initializer but a previous def'n exists: DefKey { parent: Some(DefIndex(34)), disambiguated_data: DisambiguatedDefPathData { data: ValueNs("fmt"), disambiguator: 0 } }', src\librustc\hir\map\definitions.rs:337
stack backtrace:
   0: mingw_set_invalid_parameter_handler
   1: mingw_set_invalid_parameter_handler
   2: mingw_set_invalid_parameter_handler
   3: mingw_set_invalid_parameter_handler
   4: mingw_set_invalid_parameter_handler
   5: mingw_set_invalid_parameter_handler
   6: mingw_set_invalid_parameter_handler
   7: mingw_set_invalid_parameter_handler
   8: mingw_set_invalid_parameter_handler
   9: mingw_set_invalid_parameter_handler
  10: mingw_set_invalid_parameter_handler
  11: mingw_set_invalid_parameter_handler
  12: mingw_set_invalid_parameter_handler
  13: mingw_set_invalid_parameter_handler
  14: mingw_set_invalid_parameter_handler
  15: mingw_set_invalid_parameter_handler
  16: mingw_set_invalid_parameter_handler
  17: mingw_set_invalid_parameter_handler
  18: mingw_set_invalid_parameter_handler
  19: mingw_set_invalid_parameter_handler
  20: mingw_set_invalid_parameter_handler
  21: mingw_set_invalid_parameter_handler
  22: mingw_set_invalid_parameter_handler
  23: mingw_set_invalid_parameter_handler

error: Could not compile `minhook`.

Caused by:
  process didn't exit successfully: `rustc --crate-name minhook src\lib.rs --crate-type lib --emit=dep-info,link -C debuginfo=2 -C metadata=384f87550bb58999 -C extra-filename=-384f87550bb58999 --out-dir D:\minhook-rs\target\debug\deps -L dependency=D:\minhook-rs\target\debug\deps --extern libc=D:\minhook-rs\target\debug\deps\liblibc-5dc7b85e748840b4.rlib --extern winapi=D:\minhook-rs\target\debug\deps\libwinapi-a5898d7aceb63fac.rlib --extern lazy_static=D:\minhook-rs\target\debug\deps\liblazy_static-ab7caa853791a68a.rlib --extern kernel32=D:\minhook-rs\target\debug\deps\libkernel32-835ed4d4f4dc2d3e.rlib -L native=D:\minhook-rs\target\debug\build\minhook-ad589a5fdd12ea38\out -l static=minhook` (exit code: 101)

$ rustc --version --verbose
rustc 1.17.0-nightly (b1e31766d 2017-03-03)
binary: rustc
commit-hash: b1e31766da75b188062c59f38cd6e8544b902afd
commit-date: 2017-03-03
host: x86_64-pc-windows-gnu
release: 1.17.0-nightly
LLVM version: 3.9

I used mingw64 of msys2.

[TimNN]

Duplicate of #40136, should be fixed by #40272 which will be available in the next nightly.

[jeiea]

I checked it has no problem with master branch. Close this.