Closed as not planned
Description
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Found to occur in commit e2504cf (Sep 21)
Description
config.toml content:
$ sed -r -e 's/^#.*$//' -e '/^$/d' config.toml
[llvm]
ccache = true
[build]
[install]
[rust]
debuginfo-lines = true
[target.x86_64-unknown-linux-gnu]
[dist]
$ echo 'FIRST BUILD' ; ../x.py build ; echo 'SECOND BUILD' ; ../x.py build --keep-stage 0 ; touch ../src/librustc/lib.rs ; echo 'THIRD BUILD'; ../x.py build --keep-stage 0
FIRST BUILD
Updating submodules
error: could not lock config file /home/ariel/Rust/rust/.git/modules/src/liblibc/config: File exists
Finished dev [unoptimized] target(s) in 0.0 secs
Building stage0 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage0 std from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage0 test artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage0 test from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage0 compiler artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compiling rustc_metadata v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_metadata)
Compiling rustc_save_analysis v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_save_analysis)
Compiling rustc_mir v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_mir)
Compiling rustc_trans v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_trans)
Compiling rustc_borrowck v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_borrowck)
Compiling rustc_plugin v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_plugin)
Compiling rustc_driver v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_driver)
Compiling rustc-main v0.0.0 (file:///home/ariel/Rust/rust/src/rustc)
Finished release [optimized] target(s) in 263.68 secs
Copying stage0 rustc from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Assembling stage1 compiler (x86_64-unknown-linux-gnu)
Building stage1 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compiling core v0.0.0 (file:///home/ariel/Rust/rust/src/libcore)
Compiling unwind v0.0.0 (file:///home/ariel/Rust/rust/src/libunwind)
Compiling libc v0.0.0 (file:///home/ariel/Rust/rust/src/rustc/libc_shim)
Compiling compiler_builtins v0.0.0 (file:///home/ariel/Rust/rust/src/rustc/compiler_builtins_shim)
Compiling rustc_msan v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_msan)
Compiling rustc_lsan v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_lsan)
Compiling alloc_jemalloc v0.0.0 (file:///home/ariel/Rust/rust/src/liballoc_jemalloc)
Compiling rustc_tsan v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_tsan)
Compiling rustc_asan v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_asan)
Compiling std v0.0.0 (file:///home/ariel/Rust/rust/src/libstd)
Compiling rand v0.0.0 (file:///home/ariel/Rust/rust/src/librand)
Compiling std_unicode v0.0.0 (file:///home/ariel/Rust/rust/src/libstd_unicode)
Compiling panic_abort v0.0.0 (file:///home/ariel/Rust/rust/src/libpanic_abort)
Compiling alloc v0.0.0 (file:///home/ariel/Rust/rust/src/liballoc)
Compiling panic_unwind v0.0.0 (file:///home/ariel/Rust/rust/src/libpanic_unwind)
Compiling collections v0.0.0 (file:///home/ariel/Rust/rust/src/libcollections)
Compiling alloc_system v0.0.0 (file:///home/ariel/Rust/rust/src/liballoc_system)
Finished release [optimized] target(s) in 41.73 secs
Copying stage1 std from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage1 test artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compiling term v0.0.0 (file:///home/ariel/Rust/rust/src/libterm)
Compiling getopts v0.2.14
Compiling test v0.0.0 (file:///home/ariel/Rust/rust/src/libtest)
Finished release [optimized] target(s) in 13.62 secs
Copying stage1 test from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage1 compiler artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compiling arena v0.0.0 (file:///home/ariel/Rust/rust/src/libarena)
Compiling libc v0.2.30
Compiling rustc-serialize v0.3.24
Compiling bitflags v1.0.0
Compiling ar v0.3.0
Compiling log v0.3.8
Compiling graphviz v0.0.0 (file:///home/ariel/Rust/rust/src/libgraphviz)
Compiling rustc-demangle v0.1.5
Compiling rustc_platform_intrinsics v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_platform_intrinsics)
Compiling serialize v0.0.0 (file:///home/ariel/Rust/rust/src/libserialize)
Compiling stable_deref_trait v1.0.0
Compiling fmt_macros v0.0.0 (file:///home/ariel/Rust/rust/src/libfmt_macros)
Compiling rustc_trans v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_trans)
Compiling rustc v0.0.0 (file:///home/ariel/Rust/rust/src/librustc)
Compiling rustc_driver v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_driver)
Compiling rustc_cratesio_shim v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_cratesio_shim)
Compiling rustc_metadata v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_metadata)
Compiling jobserver v0.1.6
Compiling num_cpus v1.6.2
Compiling env_logger v0.4.3
Compiling rustc_back v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_back)
Compiling syntax v0.0.0 (file:///home/ariel/Rust/rust/src/libsyntax)
Compiling owning_ref v0.3.3
Compiling rustc_incremental v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_incremental)
Compiling rustc_apfloat v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_apfloat)
Compiling rustc_data_structures v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_data_structures)
Compiling miniz-sys v0.1.9
Compiling rls-span v0.4.0
Compiling rustc_llvm v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_llvm)
Compiling syntax_pos v0.0.0 (file:///home/ariel/Rust/rust/src/libsyntax_pos)
Compiling rls-data v0.10.0
Compiling flate2 v0.2.19
Compiling rustc_errors v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_errors)
Compiling proc_macro v0.0.0 (file:///home/ariel/Rust/rust/src/libproc_macro)
Compiling rustc_const_math v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_const_math)
Compiling syntax_ext v0.0.0 (file:///home/ariel/Rust/rust/src/libsyntax_ext)
Compiling rustc_resolve v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_resolve)
Compiling rustc_const_eval v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_const_eval)
Compiling rustc_privacy v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_privacy)
Compiling rustc_typeck v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_typeck)
Compiling rustc_trans_utils v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_trans_utils)
Compiling rustc_allocator v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_allocator)
Compiling rustc_lint v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_lint)
Compiling rustc_mir v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_mir)
Compiling rustc_passes v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_passes)
Compiling rustc_save_analysis v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_save_analysis)
Compiling rustc_plugin v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_plugin)
Compiling rustc_borrowck v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_borrowck)
Compiling rustc-main v0.0.0 (file:///home/ariel/Rust/rust/src/rustc)
Finished release [optimized] target(s) in 865.47 secs
Copying stage1 rustc from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Assembling stage2 compiler (x86_64-unknown-linux-gnu)
Uplifting stage1 std (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 std from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Uplifting stage1 test (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 test from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Uplifting stage1 rustc (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 rustc from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building rustdoc for stage2 (x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Build completed successfully in 0:19:50
\--- COMMENT MINE: OK, BUILDS EVERYTHING
SECOND BUILD
Updating submodules
error: could not lock config file /home/ariel/Rust/rust/.git/modules/src/liblibc/config: File exists
Finished dev [unoptimized] target(s) in 0.0 secs
Building stage0 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage0 std from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage0 test artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage0 test from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage0 compiler artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage0 rustc from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Assembling stage1 compiler (x86_64-unknown-linux-gnu)
Building stage1 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage1 std from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage1 test artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage1 test from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage1 compiler artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage1 rustc from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Assembling stage2 compiler (x86_64-unknown-linux-gnu)
Uplifting stage1 std (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 std from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Uplifting stage1 test (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 test from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Uplifting stage1 rustc (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 rustc from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building rustdoc for stage2 (x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Build completed successfully in 0:00:04
\--- COMMENT MINE: OK, IDENTITY REBUILD
\--- (touched librustc)
THIRD BUILD
Updating submodules
error: could not lock config file /home/ariel/Rust/rust/.git/modules/src/liblibc/config: File exists
Finished dev [unoptimized] target(s) in 0.0 secs
Building stage0 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage0 std from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage0 test artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Copying stage0 test from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage0 compiler artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compiling rustc v0.0.0 (file:///home/ariel/Rust/rust/src/librustc)
Compiling rustc_allocator v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_allocator)
Compiling rustc_resolve v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_resolve)
Compiling rustc_trans_utils v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_trans_utils)
Compiling rustc_metadata v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_metadata)
Compiling rustc_const_eval v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_const_eval)
Compiling rustc_typeck v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_typeck)
Compiling rustc_privacy v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_privacy)
Compiling rustc_incremental v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_incremental)
Compiling rustc_lint v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_lint)
Compiling rustc_mir v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_mir)
Compiling rustc_passes v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_passes)
Compiling rustc_trans v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_trans)
Compiling rustc_save_analysis v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_save_analysis)
Compiling rustc_plugin v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_plugin)
Compiling rustc_borrowck v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_borrowck)
Compiling rustc_driver v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_driver)
Compiling rustc-main v0.0.0 (file:///home/ariel/Rust/rust/src/rustc)
Finished release [optimized] target(s) in 645.93 secs
Copying stage0 rustc from stage0 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Assembling stage1 compiler (x86_64-unknown-linux-gnu)
Building stage1 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compiling core v0.0.0 (file:///home/ariel/Rust/rust/src/libcore)
Compiling libc v0.0.0 (file:///home/ariel/Rust/rust/src/rustc/libc_shim)
Compiling unwind v0.0.0 (file:///home/ariel/Rust/rust/src/libunwind)
Compiling compiler_builtins v0.0.0 (file:///home/ariel/Rust/rust/src/rustc/compiler_builtins_shim)
Compiling rustc_lsan v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_lsan)
Compiling rustc_asan v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_asan)
Compiling rustc_msan v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_msan)
Compiling alloc_jemalloc v0.0.0 (file:///home/ariel/Rust/rust/src/liballoc_jemalloc)
Compiling rustc_tsan v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_tsan)
Compiling std v0.0.0 (file:///home/ariel/Rust/rust/src/libstd)
Compiling rand v0.0.0 (file:///home/ariel/Rust/rust/src/librand)
Compiling std_unicode v0.0.0 (file:///home/ariel/Rust/rust/src/libstd_unicode)
Compiling panic_abort v0.0.0 (file:///home/ariel/Rust/rust/src/libpanic_abort)
Compiling alloc v0.0.0 (file:///home/ariel/Rust/rust/src/liballoc)
Compiling alloc_system v0.0.0 (file:///home/ariel/Rust/rust/src/liballoc_system)
Compiling panic_unwind v0.0.0 (file:///home/ariel/Rust/rust/src/libpanic_unwind)
Compiling collections v0.0.0 (file:///home/ariel/Rust/rust/src/libcollections)
Finished release [optimized] target(s) in 40.96 secs
Copying stage1 std from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage1 test artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compiling getopts v0.2.14
Compiling term v0.0.0 (file:///home/ariel/Rust/rust/src/libterm)
Compiling test v0.0.0 (file:///home/ariel/Rust/rust/src/libtest)
Finished release [optimized] target(s) in 13.54 secs
Copying stage1 test from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building stage1 compiler artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Compiling graphviz v0.0.0 (file:///home/ariel/Rust/rust/src/libgraphviz)
Compiling ar v0.3.0
Compiling arena v0.0.0 (file:///home/ariel/Rust/rust/src/libarena)
Compiling rustc-demangle v0.1.5
Compiling libc v0.2.30
Compiling fmt_macros v0.0.0 (file:///home/ariel/Rust/rust/src/libfmt_macros)
Compiling rustc_platform_intrinsics v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_platform_intrinsics)
Compiling log v0.3.8
Compiling serialize v0.0.0 (file:///home/ariel/Rust/rust/src/libserialize)
Compiling bitflags v1.0.0
Compiling rustc-serialize v0.3.24
Compiling stable_deref_trait v1.0.0
Compiling rustc v0.0.0 (file:///home/ariel/Rust/rust/src/librustc)
Compiling rustc_back v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_back)
Compiling syntax v0.0.0 (file:///home/ariel/Rust/rust/src/libsyntax)
Compiling rustc_driver v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_driver)
Compiling rustc_incremental v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_incremental)
Compiling rustc_trans v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_trans)
Compiling jobserver v0.1.6
Compiling num_cpus v1.6.2
Compiling rustc_metadata v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_metadata)
Compiling env_logger v0.4.3
Compiling rustc_cratesio_shim v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_cratesio_shim)
Compiling owning_ref v0.3.3
Compiling miniz-sys v0.1.9
Compiling rustc_apfloat v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_apfloat)
Compiling rustc_data_structures v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_data_structures)
Compiling rustc_llvm v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_llvm)
Compiling flate2 v0.2.19
Compiling rls-span v0.4.0
Compiling syntax_pos v0.0.0 (file:///home/ariel/Rust/rust/src/libsyntax_pos)
Compiling rls-data v0.10.0
Compiling rustc_errors v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_errors)
Compiling rustc_const_math v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_const_math)
Compiling proc_macro v0.0.0 (file:///home/ariel/Rust/rust/src/libproc_macro)
Compiling syntax_ext v0.0.0 (file:///home/ariel/Rust/rust/src/libsyntax_ext)
Compiling rustc_resolve v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_resolve)
Compiling rustc_typeck v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_typeck)
Compiling rustc_const_eval v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_const_eval)
Compiling rustc_allocator v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_allocator)
Compiling rustc_trans_utils v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_trans_utils)
Compiling rustc_privacy v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_privacy)
Compiling rustc_mir v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_mir)
Compiling rustc_passes v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_passes)
Compiling rustc_lint v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_lint)
Compiling rustc_save_analysis v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_save_analysis)
Compiling rustc_plugin v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_plugin)
Compiling rustc_borrowck v0.0.0 (file:///home/ariel/Rust/rust/src/librustc_borrowck)
Compiling rustc-main v0.0.0 (file:///home/ariel/Rust/rust/src/rustc)
Finished release [optimized] target(s) in 900.12 secs
Copying stage1 rustc from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Assembling stage2 compiler (x86_64-unknown-linux-gnu)
Uplifting stage1 std (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 std from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Uplifting stage1 test (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 test from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Uplifting stage1 rustc (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
Copying stage2 rustc from stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu / x86_64-unknown-linux-gnu)
Building rustdoc for stage2 (x86_64-unknown-linux-gnu)
Finished release [optimized] target(s) in 0.0 secs
Build completed successfully in 0:26:44
\-- COMMENT MINE: Would have expected only stage2 to be compiled from rustc onwards, but actually we compiled the entire world.