Updating only changed submodules Submodules updated in 0.06 seconds Finished dev [unoptimized + debuginfo] target(s) in 0.58s Building stage0 std artifacts (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu) Finished release [optimized] target(s) in 0.56s Copying stage0 std 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_ty_utils v0.0.0 (/users/djauhar/src/rust-sexxii-goose/compiler/rustc_ty_utils) Compiling rustc_mir v0.0.0 (/users/djauhar/src/rust-sexxii-goose/compiler/rustc_mir) error: unused import: `sym` --> compiler/rustc_ty_utils/src/needs_drop.rs:9:18 | 9 | use rustc_span::{sym, DUMMY_SP}; | ^^^ | = note: `-D unused-imports` implied by `-D warnings` error: aborting due to previous error error: could not compile `rustc_ty_utils` To learn more, run the command again with --verbose. warning: build failed, waiting for other jobs to finish... thread 'rustc' panicked at 'found unstable fingerprints for evaluate_obligation(dbd094bf6d29aecc-8ea5b648234edc2e): Ok(EvaluatedToOk)', /rustc/215738137bcbef2c3637a5bd290ef612cffe6ba5/compiler/rustc_query_system/src/query/plumbing.rs:593:5 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace 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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md note: rustc 1.52.0-beta.3 (215738137 2021-04-06) running on x86_64-unknown-linux-gnu note: compiler flags: -Z macro-backtrace -Z tls-model=initial-exec -Z unstable-options -Z binary-dep-depinfo -Z force-unstable-if-unmarked -C opt-level=3 -C embed-bitcode=no -C debuginfo=0 -C incremental -C link-args=-Wl,-rpath,$ORIGIN/../lib -C prefer-dynamic -C llvm-args=-import-instr-limit=10 --crate-type lib note: some of the compiler flags provided by cargo are hidden query stack during panic: #0 [evaluate_obligation] evaluating trait selection obligation `dataflow::framework::engine::Results: std::marker::Freeze` #1 [is_freeze_raw] computing whether `dataflow::framework::engine::Results` is freeze end of query stack error: build failed command did not execute successfully: "/users/djauhar/src/rust-sexxii-goose/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "build" "--target" "x86_64-unknown-linux-gnu" "-Zbinary-dep-depinfo" "-j" "64" "--release" "--features" " llvm" "--manifest-path" "/users/djauhar/src/rust-sexxii-goose/compiler/rustc/Cargo.toml" "--message-format" "json-render-diagnostics" expected success, got: exit code: 101 failed to run: /users/djauhar/src/rust-sexxii-goose/build/bootstrap/debug/bootstrap test -i --stage 1 src/test/ui/closures/2229_closure_analysis/migrations/insignificant_drop_attr.rs Build completed unsuccessfully in 0:00:43