Could not complete Hello World

[shivanshsen7]

Could not follow hello-rust

Code

fn main() {
	println!("Hello, world!");
}

Meta

rustc --version --verbose:

rustc 1.52.0 (88f19c6da 2021-05-03)
binary: rustc
commit-hash: 88f19c6dab716c6281af7602e30f413e809c5974
commit-date: 2021-05-03
host: x86_64-pc-windows-msvc
release: 1.52.0
LLVM version: 12.0.0

Error output

       Fresh autocfg v1.0.1
       Fresh cc v1.0.67
       Fresh gimli v0.24.0
       Fresh adler v1.0.2
       Fresh object v0.24.0
       Fresh unicode-width v0.1.8
       Fresh rustc-demangle v0.1.19
       Fresh cfg-if v1.0.0
       Fresh vec_map v0.8.2
       Fresh strsim v0.8.0
       Fresh smallvec v0.4.5
       Fresh addr2line v0.15.1
       Fresh textwrap v0.11.0
       Fresh winapi v0.3.9
       Fresh libc v0.2.94
       Fresh bitflags v1.2.1
       Fresh miniz_oxide v0.4.4
       Fresh atty v0.2.14
       Fresh backtrace v0.3.59
       Fresh clap v2.33.3
       Fresh error-chain v0.10.0
       Fresh ferris-says v0.2.0
   Compiling hello-rust v0.1.0 (D:\rust\hello-rust)
     Running `rustc --crate-name hello_rust --edition=2018 'src\main.rs' --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=a5a866d33d71c728 --out-dir 'D:\rust\hello-rust\target\debug\deps' -C 'incremental=D:\rust\hello-rust\target\debug\incremental' -L 'dependency=D:\rust\hello-rust\target\debug\deps' --extern 'ferris_says=D:\rust\hello-rust\target\debug\deps\libferris_says-9cc42f4fadeb00ab.rlib'`
thread 'rustc' panicked at 'found unstable fingerprints for predicates_of(core[bd3a]::ops::function::Fn): GenericPredicates { parent: None, predicates: [(Binder(TraitPredicate(<Self as std::ops::FnMut<Args>>)), C:\Users\Shivansh sen\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:21: 67:32 (#0)), (Binder(TraitPredicate(<Args as std::marker::Sized>)), C:\Users\Shivansh sen\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:14: 67:18 (#0)), (Binder(TraitPredicate(<Self as std::ops::Fn<Args>>)), C:\Users\Shivansh sen\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:1: 67:32 (#0))] }', /rustc/88f19c6dab716c6281af7602e30f413e809c5974\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 (88f19c6da 2021-05-03) running on x86_64-pc-windows-msvc

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type bin

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [predicates_of] computing predicates of `std::ops::Fn`
#1 [vtable_methods] finding all methods for trait std::ops::Fn
end of query stack
error: could not compile `hello-rust`

Caused by:
  process didn't exit successfully: `rustc --crate-name hello_rust --edition=2018 'src\main.rs' --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=a5a866d33d71c728 --out-dir 'D:\rust\hello-rust\target\debug\deps' -C 'incremental=D:\rust\hello-rust\target\debug\incremental' -L 'dependency=D:\rust\hello-rust\target\debug\deps' --extern 'ferris_says=D:\rust\hello-rust\target\debug\deps\libferris_says-9cc42f4fadeb00ab.rlib'` (exit code: 101)

Backtrace

thread 'rustc' panicked at 'found unstable fingerprints for predicates_of(core[bd3a]::ops::function::Fn): GenericPredicates { parent: None, predicates: [(Binder(TraitPredicate(<Self as std::ops::FnMut<Args>>)), C:\Users\Shivansh sen\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:21: 67:32 (#0)), (Binder(TraitPredicate(<Args as std::marker::Sized>)), C:\Users\Shivansh sen\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:14: 67:18 (#0)), (Binder(TraitPredicate(<Self as std::ops::Fn<Args>>)), C:\Users\Shivansh sen\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:1: 67:32 (#0))] }', /rustc/88f19c6dab716c6281af7602e30f413e809c5974\compiler\rustc_query_system\src\query\plumbing.rs:593:5
stack backtrace:
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

[Aaron1011]

See issue #84970

[carols10cents]

Hi @shivanshsen7! Thank you for the bug report :) The compiler team is currently working on a bunch of issues similar to this. As mentioned on the bug Aaron linked to, until these issues are fixed, you can work around this by disabling incremental compilation either by setting the environment variable CARGO_INCREMENTAL=0 or editing the Cargo configuration file in your $HOME/.cargo/config.toml file to include this:

build.incremental = 'false'

Please let us know if you have any questions, and sorry about this issue.

EDIT: oooops I was testing that setting and the first time I posted this comment, it was set to true. It should be false.

[wesleywiser]

Thanks for filing the bug report! We are currently triaging issues related to #84970 to ensure each underlying problem gets resolved. Since this appears to be a duplicate of #83259 so I'm going to close in favor of that issue.