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Spurious rbml failure in incremental tests #33435

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@alexcrichton

Description

@alexcrichton

http://buildbot.rust-lang.org/builders/auto-linux-64-opt-rustbuild/builds/983/steps/test/logs/stdio
https://gist.github.com/alexcrichton/df863e77c5c5de902151c189b7319d71
#33091 (comment)

failures:

---- [codegen-units] codegen-units/partitioning/local-drop-glue.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/local-drop-glue.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/local-drop-glue.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/local-drop-glue.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/local-drop-glue
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/local-drop-glue/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 30")
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 '[codegen-units] codegen-units/partitioning/local-drop-glue.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595
note: Run with `RUST_BACKTRACE=1` for a backtrace.

---- [codegen-units] codegen-units/partitioning/local-generic.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/local-generic.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/local-generic.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/local-generic.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=eager -Zincremental=tmp/partitioning-tests/local-generic
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/local-generic/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 13")
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 '[codegen-units] codegen-units/partitioning/local-generic.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595

---- [codegen-units] codegen-units/partitioning/local-inlining.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/local-inlining.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/local-inlining.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/local-inlining.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/local-inlining
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/local-inlining/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 5")
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 '[codegen-units] codegen-units/partitioning/local-inlining.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595

---- [codegen-units] codegen-units/partitioning/local-transitive-inlining.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/local-transitive-inlining.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/local-transitive-inlining.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/local-transitive-inlining.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/local-transitive-inlining
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/local-transitive-inlining/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 9")
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 '[codegen-units] codegen-units/partitioning/local-transitive-inlining.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595

---- [codegen-units] codegen-units/partitioning/regular-modules.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/regular-modules.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/regular-modules.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/regular-modules.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=eager -Zincremental=tmp/partitioning-tests/regular-modules
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/regular-modules/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 32")
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 '[codegen-units] codegen-units/partitioning/regular-modules.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595

---- [codegen-units] codegen-units/partitioning/methods-are-with-self-type.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/methods-are-with-self-type.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/methods-are-with-self-type.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/methods-are-with-self-type.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/methods-are-with-self-type
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/methods-are-with-self-type/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 5")
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 '[codegen-units] codegen-units/partitioning/methods-are-with-self-type.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595

---- [codegen-units] codegen-units/partitioning/statics.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/statics.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/statics.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/statics.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/statics
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/statics/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 31")
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 '[codegen-units] codegen-units/partitioning/statics.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595

---- [codegen-units] codegen-units/partitioning/extern-drop-glue.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/extern-drop-glue.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/extern-drop-glue.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuthread '<main>' panicked at 'Some tests failed', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/main.rs:275
ild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/extern-drop-glue.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/extern-drop-glue
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/extern-drop-glue/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 5")
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 '[codegen-units] codegen-units/partitioning/extern-drop-glue.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595

---- [codegen-units] codegen-units/partitioning/extern-generic.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/extern-generic.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/extern-generic.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/extern-generic.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=eager -Zincremental=tmp/partitioning-tests/extern-generic
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/extern-generic/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 15")
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 '[codegen-units] codegen-units/partitioning/extern-generic.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595

---- [codegen-units] codegen-units/partitioning/inlining-from-extern-crate.rs stdout ----

error: compilation failed!
status: exit code: 101
command: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/test/codegen-units/partitioning/inlining-from-extern-crate.rs -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units --target=x86_64-unknown-linux-gnu -L /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/inlining-from-extern-crate.stage2-x86_64-unknown-linux-gnu.codegen-units.libaux -C prefer-dynamic -o /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/test/codegen-units/partitioning/inlining-from-extern-crate.stage2-x86_64-unknown-linux-gnu -Crpath -Lnative=/buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/obj/build/x86_64-unknown-linux-gnu/rust-test-helpers -Zprint-trans-items=lazy -Zincremental=tmp/partitioning-tests/inlining-from-extern-crate
stdout:
------------------------------------------
thread 'rustc' panicked at 'Box<Any>', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/libsyntax/errors/mod.rs:576
note: Run with `RUST_BACKTRACE=1` for a backtrace.


------------------------------------------
stderr:
------------------------------------------
error: internal compiler error: /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/librustc_incremental/persist/load.rs:72: decoding error in dep-graph from `tmp/partitioning-tests/inlining-from-extern-crate/dep_graph.rbml`: Expected("Invalid tuple length. Expected 2, found 0")
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 '[codegen-units] codegen-units/partitioning/inlining-from-extern-crate.rs' panicked at 'explicit panic', /buildslave/rust-buildbot/slave/auto-linux-64-opt-rustbuild/build/src/tools/compiletest/src/runtest.rs:1595


failures:
    [codegen-units] codegen-units/partitioning/extern-drop-glue.rs
    [codegen-units] codegen-units/partitioning/extern-generic.rs
    [codegen-units] codegen-units/partitioning/inlining-from-extern-crate.rs
    [codegen-units] codegen-units/partitioning/local-drop-glue.rs
    [codegen-units] codegen-units/partitioning/local-generic.rs
    [codegen-units] codegen-units/partitioning/local-inlining.rs
    [codegen-units] codegen-units/partitioning/local-transitive-inlining.rs
    [codegen-units] codegen-units/partitioning/methods-are-with-self-type.rs
    [codegen-units] codegen-units/partitioning/regular-modules.rs
    [codegen-units] codegen-units/partitioning/statics.rs

test result: FAILED. 22 passed; 10 failed; 0 ignored; 0 measured

Looks like either these files are being read/written concurrently or we've got stale artifacts from previous builds.

cc @michaelwoerister, thoughts?

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