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# error kind ExecutionFailed
# pre-build errors command failed: exit status: 101
# rustc version rustc 1.98.0-nightly (f8a08b688 2026-05-30)
# docs.rs version docsrs 0.0.0 (f16e33f3e6ac9fc9e4413728c5dd1b2ba1c6b799 2026-05-23 )
# build log [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "DOCS_RS=1" "-w" "/opt/rustwide/workdir" "--user" "1001:1001" "3dc03fe80fb203dc196196a8c48dbd75ed0c6013fa6cb9067970bff2f08a30e5" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--emit=invocation-specific\", \"--resource-suffix\", \"-20260530-1.98.0-nightly-f8a08b688\", \"--static-root-path\", \"/-/rustdoc.static/\", \"--cap-lints\", \"warn\", \"--extern-html-root-takes-precedence\"]" "--offline" "-Zunstable-options" "--config=doc.extern-map.registries.crates-io=\"https://docs.rs/{pkg_name}/{version}/x86_64-unknown-linux-gnu\"" "-Zrustdoc-scrape-examples" "-j6" "--target" "x86_64-unknown-linux-gnu", kill_on_drop: false }` [INFO] [stderr] warning: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Checking cryptix-bigint v0.1.0 [INFO] [stderr] error[E0635]: unknown feature `bigint_helper_methods` [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/lib.rs:4:12 [INFO] [stderr] | [INFO] [stderr] 4 | #![feature(bigint_helper_methods)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0635]: unknown feature `const_bigint_helper_methods` [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/lib.rs:5:12 [INFO] [stderr] | [INFO] [stderr] 5 | #![feature(const_bigint_helper_methods)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0635]: unknown feature `const_slice_index` [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/lib.rs:9:12 [INFO] [stderr] | [INFO] [stderr] 9 | #![feature(const_slice_index)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] help: there is a feature with a similar name: `const_slice_len` [INFO] [stderr] | [INFO] [stderr] 9 - #![feature(const_slice_index)] [INFO] [stderr] 9 + #![feature(const_slice_len)] [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] error[E0658]: use of unstable library feature `widening_mul` [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/digit.rs:93:14 [INFO] [stderr] | [INFO] [stderr] 93 | self.widening_mul(rhs) [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #152016 <https://github.com/rust-lang/rust/issues/152016> for more information [INFO] [stderr] = help: add `#![feature(widening_mul)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-05-30; consider upgrading it if it is out of date [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/digit.rs:93:9 [INFO] [stderr] | [INFO] [stderr] 92 | fn widen_mul(self, rhs: Self) -> (Self, Self) { [INFO] [stderr] | ------------ expected `(u64, u64)` because of return type [INFO] [stderr] 93 | self.widening_mul(rhs) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected `(u64, u64)`, found `u128` [INFO] [stderr] | [INFO] [stderr] = note: expected tuple `(u64, u64)` [INFO] [stderr] found type `u128` [INFO] [stderr] [INFO] [stderr] error[E0658]: use of unstable library feature `widening_mul` [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/digit.rs:180:22 [INFO] [stderr] | [INFO] [stderr] 180 | self.widening_mul(rhs) [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 200 | impl_digit!(@all u8, u16, u32); [INFO] [stderr] | ------------------------------ in this macro invocation [INFO] [stderr] | [INFO] [stderr] = note: see issue #152016 <https://github.com/rust-lang/rust/issues/152016> for more information [INFO] [stderr] = help: add `#![feature(widening_mul)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2026-05-30; consider upgrading it if it is out of date [INFO] [stderr] = note: this error originates in the macro `impl_digit` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/digit.rs:180:17 [INFO] [stderr] | [INFO] [stderr] 179 | fn widen_mul(self, rhs: Self) -> (Self, Self) { [INFO] [stderr] | ------------ expected `(u8, u8)` because of return type [INFO] [stderr] 180 | self.widening_mul(rhs) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected `(u8, u8)`, found `u16` [INFO] [stderr] ... [INFO] [stderr] 200 | impl_digit!(@all u8, u16, u32); [INFO] [stderr] | ------------------------------ in this macro invocation [INFO] [stderr] | [INFO] [stderr] = note: expected tuple `(u8, u8)` [INFO] [stderr] found type `u16` [INFO] [stderr] = note: this error originates in the macro `impl_digit` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/digit.rs:180:17 [INFO] [stderr] | [INFO] [stderr] 179 | fn widen_mul(self, rhs: Self) -> (Self, Self) { [INFO] [stderr] | ------------ expected `(u16, u16)` because of return type [INFO] [stderr] 180 | self.widening_mul(rhs) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected `(u16, u16)`, found `u32` [INFO] [stderr] ... [INFO] [stderr] 200 | impl_digit!(@all u8, u16, u32); [INFO] [stderr] | ------------------------------ in this macro invocation [INFO] [stderr] | [INFO] [stderr] = note: expected tuple `(u16, u16)` [INFO] [stderr] found type `u32` [INFO] [stderr] = note: this error originates in the macro `impl_digit` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cryptix-bigint-0.1.0/src/digit.rs:180:17 [INFO] [stderr] | [INFO] [stderr] 179 | fn widen_mul(self, rhs: Self) -> (Self, Self) { [INFO] [stderr] | ------------ expected `(u32, u32)` because of return type [INFO] [stderr] 180 | self.widening_mul(rhs) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ expected `(u32, u32)`, found `u64` [INFO] [stderr] ... [INFO] [stderr] 200 | impl_digit!(@all u8, u16, u32); [INFO] [stderr] | ------------------------------ in this macro invocation [INFO] [stderr] | [INFO] [stderr] = note: expected tuple `(u32, u32)` [INFO] [stderr] found type `u64` [INFO] [stderr] = note: this error originates in the macro `impl_digit` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0308, E0635, E0658. [INFO] [stderr] For more information about an error, try `rustc --explain E0308`. [INFO] [stderr] error: could not compile `cryptix-bigint` (lib) due to 11 previous errors [INFO] running `Command { std: "docker" "inspect" "3dc03fe80fb203dc196196a8c48dbd75ed0c6013fa6cb9067970bff2f08a30e5", kill_on_drop: false }`