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I'm building jf-pcs library from https://github.com/EspressoSystems/jellyfish
On rust version 1.83
rust version meta
[$] rustc --version --verbose
rustc 1.83.0 (90b35a623 2024-11-26)
binary: rustc
commit-hash: 90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf
commit-date: 2024-11-26
host: aarch64-apple-darwin
release: 1.83.0
LLVM version: 19.1.1It only took ~11s to build the library
[$] cargo build -p jf-pcs
Compiling proc-macro2 v1.0.86
Compiling unicode-ident v1.0.12
... [excess outputs omitted]
Compiling jf-utils v0.4.4 (https://github.com/EspressoSystems/jellyfish?tag=0.4.5#7d71dbef)
Compiling jf-pcs v0.1.0 (/Users/chengyu/espressosys/jellyfish/pcs)
Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.43sNow on rust 1.84 the compilation runs almost forever:
rust version meta
rustc 1.84.0 (9fc6b4312 2025-01-07)
binary: rustc
commit-hash: 9fc6b43126469e3858e2fe86cafb4f0fd5068869
commit-date: 2025-01-07
host: aarch64-apple-darwin
release: 1.84.0
LLVM version: 19.1.5[$] cargo build -p jf-pcs
Compiling proc-macro2 v1.0.86
Compiling unicode-ident v1.0.12
... [excess outputs omitted]
Compiling jf-utils v0.4.4 (https://github.com/EspressoSystems/jellyfish?tag=0.4.5#7d71dbef)
Compiling jf-pcs v0.1.0 (/Users/chengyu/espressosys/jellyfish/pcs)
Finished `dev` profile [unoptimized + debuginfo] target(s) in 26m 43sSuspect that this is due to the new trait solver.
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Category: This is a bug.Issue: Problems and improvements with respect to compile times.High priorityStatus: a bisection has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issueRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.The Rustc Trait System Refactor Initiative (-Znext-solver)Performance or correctness regression from one stable version to another.