./x.py doc src/libstd: error[E0463]: can't find crate for term

[SimonSapin]

At commit 5b7c556, running ./x.py doc src/libstd

…
Documenting stage2 std (x86_64-unknown-linux-gnu)
   Compiling rustc_errors v0.0.0 (file:///home/simon/rust/src/librustc_errors)
error[E0463]: can't find crate for `term`
  --> src/librustc_errors/lib.rs:27:1
   |
27 | extern crate term;
   | ^^^^^^^^^^^^^^^^^^ can't find crate

error: aborting due to previous error

error: Could not compile `rustc_errors`.

[alexcrichton]

This... seems odd! Documenting std should definitely not be trying to document rustc_errors... Can you gist the output with -v as well?

[alexcrichton]

@SimonSapin did you discover this when working on #39986? Maybe this isn't a bug on master? (I think there's at least a bug in that PR at this moment due to Travis failing)

[SimonSapin]

Yes, I was working on #39986. Here is the end of the output of ./x.py doc --stage 1 src/libstd -v, after ./x.py clean.

       Fresh rustc_lsan v0.0.0 (file:///home/simon/rust/src/librustc_lsan)
       Fresh rustc_tsan v0.0.0 (file:///home/simon/rust/src/librustc_tsan)
       Fresh panic_unwind v0.0.0 (file:///home/simon/rust/src/libpanic_unwind)
 Documenting std v0.0.0 (file:///home/simon/rust/src/libstd)
     Running `/home/simon/rust/build/bootstrap/debug/rustdoc --crate-name std src/libstd/lib.rs --target x86_64-unknown-linux-gnu -o /home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/doc --cfg feature=\"rustc_lsan\" --cfg feature=\"panic_unwind\" --cfg feature=\"rustc_msan\" --cfg feature=\"msan\" --cfg feature=\"panic-unwind\" --cfg feature=\"rustc_tsan\" --cfg feature=\"lsan\" --cfg feature=\"asan\" --cfg feature=\"jemalloc\" --cfg feature=\"tsan\" --cfg feature=\"backtrace\" --cfg feature=\"alloc_jemalloc\" --cfg feature=\"rustc_asan\" -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/release/deps --extern alloc=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/liballoc-5c38951d14e93a8d.rlib --extern alloc_jemalloc=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/liballoc_jemalloc-010cdee304512f01.rlib --extern rustc_msan=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/librustc_msan-2a631b187f4aeea5.rlib --extern alloc_system=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/liballoc_system-7abe535016c8281b.rlib --extern panic_abort=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libpanic_abort-acfd8ef75cd130ab.rlib --extern collections=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libcollections-79470a3d90452b2c.rlib --extern libc=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/liblibc-60135dc13441cc8c.rlib --extern panic_unwind=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libpanic_unwind-2502f3b577ab26db.rlib --extern rand=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/librand-d0d3c7ef05958b8f.rlib --extern rustc_lsan=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/librustc_lsan-f73d7b25d9505dfd.rlib --extern rustc_asan=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/librustc_asan-e0d457d95a63e95d.rlib --extern unwind=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libunwind-4f22620d2fe6cb1c.rlib --extern std_unicode=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libstd_unicode-5b05b3dbb9b52a62.rlib --extern compiler_builtins=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libcompiler_builtins-ea2af56c81ac3a21.rlib --extern rustc_tsan=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/librustc_tsan-2c4c1ed9c8a92d71.rlib --extern core=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libcore-09f7c838bf8ca11a.rlib`
   Compiling rustc_data_structures v0.0.0 (file:///home/simon/rust/src/librustc_data_structures)
   Compiling syntax_pos v0.0.0 (file:///home/simon/rust/src/libsyntax_pos)
     Running `/home/simon/rust/build/bootstrap/debug/rustc --crate-name rustc_data_structures src/librustc_data_structures/lib.rs --crate-type dylib -C prefer-dynamic -C opt-level=2 -C metadata=f19b0b6f70db1e21 -C extra-filename=-f19b0b6f70db1e21 --out-dir /home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps --emit=dep-info,link --target x86_64-unknown-linux-gnu -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/release/deps --extern serialize=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libserialize-f986f2b5417063cb.so --extern serialize=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libserialize-f986f2b5417063cb.rlib --extern log=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/liblog-6431c8ac5cc6619c.so --extern log=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/liblog-6431c8ac5cc6619c.rlib`
     Running `/home/simon/rust/build/bootstrap/debug/rustc --crate-name syntax_pos src/libsyntax_pos/lib.rs --crate-type dylib -C prefer-dynamic -C opt-level=2 -C metadata=d9b229963d1d5fc9 -C extra-filename=-d9b229963d1d5fc9 --out-dir /home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps --emit=dep-info,link --target x86_64-unknown-linux-gnu -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/release/deps --extern serialize=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libserialize-f986f2b5417063cb.so --extern serialize=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libserialize-f986f2b5417063cb.rlib`
   Compiling rustc_errors v0.0.0 (file:///home/simon/rust/src/librustc_errors)
     Running `/home/simon/rust/build/bootstrap/debug/rustc --crate-name rustc_errors src/librustc_errors/lib.rs --crate-type dylib -C prefer-dynamic -C opt-level=2 -C metadata=9a5e51e74d72389d -C extra-filename=-9a5e51e74d72389d --out-dir /home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps --emit=dep-info,link --target x86_64-unknown-linux-gnu -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/release/deps --extern syntax_pos=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libsyntax_pos-d9b229963d1d5fc9.so --extern serialize=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libserialize-f986f2b5417063cb.so --extern serialize=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libserialize-f986f2b5417063cb.rlib`
error[E0463]: can't find crate for `term`
  --> src/librustc_errors/lib.rs:27:1
   |
27 | extern crate term;
   | ^^^^^^^^^^^^^^^^^^ can't find crate

error: aborting due to previous error

Build failed, waiting for other jobs to finish...
error: Could not compile `rustc_errors`.

Caused by:
  process didn't exit successfully: `/home/simon/rust/build/bootstrap/debug/rustc --crate-name rustc_errors src/librustc_errors/lib.rs --crate-type dylib -C prefer-dynamic -C opt-level=2 -C metadata=9a5e51e74d72389d -C extra-filename=-9a5e51e74d72389d --out-dir /home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps --emit=dep-info,link --target x86_64-unknown-linux-gnu -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/release/deps --extern syntax_pos=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libsyntax_pos-d9b229963d1d5fc9.so --extern serialize=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libserialize-f986f2b5417063cb.so --extern serialize=/home/simon/rust/build/x86_64-unknown-linux-gnu/stage1-std/x86_64-unknown-linux-gnu/release/deps/libserialize-f986f2b5417063cb.rlib` (exit code: 101)


command did not execute successfully: "/home/simon/rust/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "doc" "-j" "8" "--target" "x86_64-unknown-linux-gnu" "-v" "--release" "--manifest-path" "/home/simon/rust/src/rustc/std_shim/Cargo.toml" "--features" "panic-unwind asan lsan msan tsan jemalloc backtrace" "--no-deps" "-p" "alloc" "-p" "collections" "-p" "core" "-p" "std" "-p" "std_unicode" "-p" "proc_macro"
expected success, got: exit code: 101

[SimonSapin]

I can’t reproduce on master, so it does look specific to #39986. (Probably related to #39986 (comment).)