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# error kind ExecutionFailed
# pre-build errors command failed: exit status: 101
# rustc version rustc 1.96.0-nightly (1d8897a4e 2026-03-13)
# docs.rs version docsrs 0.0.0 (a68728e7 2026-03-08 )
# build log [INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace-builder3/builds/rustc-test-0.3.1/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace-builder3/builds/rustc-test-0.3.1/source:/opt/rustwide/workdir:ro,Z" "-v" "/home/cratesfyi/workspace-builder3/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/home/cratesfyi/workspace-builder3/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "DOCS_RS=1" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "6442450944" "--cpus" "6" "--user" "1001:1001" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--emit=invocation-specific\", \"--resource-suffix\", \"-20260313-1.96.0-nightly-1d8897a4e\", \"--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: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] eb783ea4d6f301abfa22ae0ebe7282d0bb1eb970ca08cefd19dccd2bcb338a3a [INFO] running `Command { std: "docker" "start" "-a" "eb783ea4d6f301abfa22ae0ebe7282d0bb1eb970ca08cefd19dccd2bcb338a3a", kill_on_drop: false }` [INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [INFO] [stderr] warning: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Documenting rustc-test v0.3.1 (/opt/rustwide/workdir) [INFO] [stderr] error: cannot find derive macro `RustcEncodable` in this scope [INFO] [stderr] --> src/lib.rs:227:17 [INFO] [stderr] | [INFO] [stderr] 227 | #[derive(Clone, RustcEncodable, RustcDecodable, PartialEq, Debug, Copy)] [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: cannot find derive macro `RustcDecodable` in this scope [INFO] [stderr] --> src/lib.rs:227:33 [INFO] [stderr] | [INFO] [stderr] 227 | #[derive(Clone, RustcEncodable, RustcDecodable, PartialEq, Debug, Copy)] [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition value: `nacl` [INFO] [stderr] --> src/lib.rs:1243:46 [INFO] [stderr] | [INFO] [stderr] 1243 | #[cfg(all(feature = "asm_black_box", not(all(target_os = "nacl", target_arch = "le32"))))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `helenos`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `managarm`, `motor`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `qurt`, `redox`, `rtems`, `solaris`, and `solid_asp3` and 14 more [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition value: `le32` [INFO] [stderr] --> src/lib.rs:1243:66 [INFO] [stderr] | [INFO] [stderr] 1243 | #[cfg(all(feature = "asm_black_box", not(all(target_os = "nacl", target_arch = "le32"))))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: expected values for `target_arch` are: `aarch64`, `amdgpu`, `arm`, `arm64ec`, `avr`, `bpf`, `csky`, `hexagon`, `loongarch32`, `loongarch64`, `m68k`, `mips`, `mips32r6`, `mips64`, `mips64r6`, `msp430`, `nvptx64`, `powerpc`, `powerpc64`, `riscv32`, `riscv64`, `s390x`, `sparc`, `sparc64`, `wasm32`, `wasm64`, `x86`, `x86_64`, and `xtensa` [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition value: `nacl` [INFO] [stderr] --> src/lib.rs:1250:50 [INFO] [stderr] | [INFO] [stderr] 1250 | #[cfg(not(all(feature = "asm_black_box", not(all(target_os = "nacl", target_arch = "le32")))))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `helenos`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `managarm`, `motor`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `qurt`, `redox`, `rtems`, `solaris`, and `solid_asp3` and 14 more [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition value: `le32` [INFO] [stderr] --> src/lib.rs:1250:70 [INFO] [stderr] | [INFO] [stderr] 1250 | #[cfg(not(all(feature = "asm_black_box", not(all(target_os = "nacl", target_arch = "le32")))))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: expected values for `target_arch` are: `aarch64`, `amdgpu`, `arm`, `arm64ec`, `avr`, `bpf`, `csky`, `hexagon`, `loongarch32`, `loongarch64`, `m68k`, `mips`, `mips32r6`, `mips64`, `mips64r6`, `msp430`, `nvptx64`, `powerpc`, `powerpc64`, `riscv32`, `riscv64`, `s390x`, `sparc`, `sparc64`, `wasm32`, `wasm64`, `x86`, `x86_64`, and `xtensa` [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition name: `rustc_emits_allow_fail` [INFO] [stderr] --> src/lib.rs:215:11 [INFO] [stderr] | [INFO] [stderr] 215 | #[cfg(rustc_emits_allow_fail)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: expected names are: `docsrs`, `feature`, and `test` and 31 more [INFO] [stderr] = help: consider using a Cargo feature instead [INFO] [stderr] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stderr] [lints.rust] [INFO] [stderr] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_emits_allow_fail)'] } [INFO] [stderr] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_emits_allow_fail)");` to the top of the `build.rs` [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition name: `rustc_emits_allow_fail` [INFO] [stderr] --> src/lib.rs:100:15 [INFO] [stderr] | [INFO] [stderr] 100 | #[cfg(not(rustc_emits_allow_fail))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider using a Cargo feature instead [INFO] [stderr] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stderr] [lints.rust] [INFO] [stderr] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_emits_allow_fail)'] } [INFO] [stderr] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_emits_allow_fail)");` to the top of the `build.rs` [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition name: `rustc_emits_allow_fail` [INFO] [stderr] --> src/lib.rs:109:11 [INFO] [stderr] | [INFO] [stderr] 109 | #[cfg(rustc_emits_allow_fail)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider using a Cargo feature instead [INFO] [stderr] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stderr] [lints.rust] [INFO] [stderr] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(rustc_emits_allow_fail)'] } [INFO] [stderr] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(rustc_emits_allow_fail)");` to the top of the `build.rs` [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition value: `bitrig` [INFO] [stderr] --> src/lib.rs:1002:15 [INFO] [stderr] | [INFO] [stderr] 1002 | target_os = "bitrig", [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `helenos`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `managarm`, `motor`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `qurt`, `redox`, `rtems`, `solaris`, and `solid_asp3` and 14 more [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] [INFO] [stderr] warning: `rustc-test` (lib doc) generated 8 warnings [INFO] [stderr] error: could not document `rustc-test` [INFO] running `Command { std: "docker" "inspect" "eb783ea4d6f301abfa22ae0ebe7282d0bb1eb970ca08cefd19dccd2bcb338a3a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eb783ea4d6f301abfa22ae0ebe7282d0bb1eb970ca08cefd19dccd2bcb338a3a", kill_on_drop: false }` [INFO] [stdout] eb783ea4d6f301abfa22ae0ebe7282d0bb1eb970ca08cefd19dccd2bcb338a3a