[INFO] fetching crate midpoint 0.1.5...
[INFO] documenting midpoint-0.1.5 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate midpoint 0.1.5 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate midpoint 0.1.5 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate midpoint 0.1.5
[INFO] finished tweaking crates.io crate midpoint 0.1.5
[INFO] tweaked toml for crates.io crate midpoint 0.1.5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded primitive_promotion v0.1.4
[INFO] [stderr]   Downloaded epui v0.1.1
[INFO] [stderr]   Downloaded epsi v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eac0530dd6e99b98d2f74fa13bbafca1782127b52623a66e1dcf4ff7e47b9c54
[INFO] running `Command { std: "docker" "start" "-a" "eac0530dd6e99b98d2f74fa13bbafca1782127b52623a66e1dcf4ff7e47b9c54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eac0530dd6e99b98d2f74fa13bbafca1782127b52623a66e1dcf4ff7e47b9c54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eac0530dd6e99b98d2f74fa13bbafca1782127b52623a66e1dcf4ff7e47b9c54", kill_on_drop: false }`
[INFO] [stdout] eac0530dd6e99b98d2f74fa13bbafca1782127b52623a66e1dcf4ff7e47b9c54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2260a1e4e5f13af82d1c77d6d3df020f3e30cdbd42958ffd79f3bb227d82163c
[INFO] running `Command { std: "docker" "start" "-a" "2260a1e4e5f13af82d1c77d6d3df020f3e30cdbd42958ffd79f3bb227d82163c", kill_on_drop: false }`
[INFO] [stderr]     Checking epsi v0.1.1
[INFO] [stderr]     Checking epui v0.1.1
[INFO] [stderr]     Checking primitive_promotion v0.1.4
[INFO] [stderr]  Documenting midpoint v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     feature(const_trait_impl)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     feature(const_fn_trait_bound)
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `const_fn_trait_bound` has been stable since `1.61.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     feature(unchecked_math)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     feature(const_inherent_unchecked_arith)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: ~const can only be applied to `#[const_trait]` traits
[INFO] [stdout]    --> src/common_macros.rs:126:25
[INFO] [stdout]     |
[INFO] [stdout] 126 |           where T: ~const $trait_name
[INFO] [stdout]     |                           ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/bitwise.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / try_impl_generic_const_fn_for_trait!(
[INFO] [stdout] 2   | |     MidpointViaBitwiseOpsExt::midpoint_via_bitwise_ops
[INFO] [stdout] 3   | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try_impl_generic_const_fn_for_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: ~const can only be applied to `#[const_trait]` traits
[INFO] [stdout]    --> src/common_macros.rs:126:25
[INFO] [stdout]     |
[INFO] [stdout] 126 |           where T: ~const $trait_name
[INFO] [stdout]     |                           ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/cpp_20_std.rs:3:1
[INFO] [stdout]     |
[INFO] [stdout] 3   | / try_impl_generic_const_fn_for_trait!(
[INFO] [stdout] 4   | |     MidpointViaCpp20StdImplementationExt::midpoint_via_cpp_20_std_implementation
[INFO] [stdout] 5   | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try_impl_generic_const_fn_for_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: ~const can only be applied to `#[const_trait]` traits
[INFO] [stdout]    --> src/common_macros.rs:139:25
[INFO] [stdout]     |
[INFO] [stdout] 139 |           where T: ~const $trait_name
[INFO] [stdout]     |                           ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/naive.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / try_impl_unsafe_generic_const_fn_for_trait!(
[INFO] [stdout] 2   | |     NaiveMidpointExt::naive_midpoint
[INFO] [stdout] 3   | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try_impl_unsafe_generic_const_fn_for_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: ~const can only be applied to `#[const_trait]` traits
[INFO] [stdout]    --> src/common_macros.rs:139:25
[INFO] [stdout]     |
[INFO] [stdout] 139 |           where T: ~const $trait_name
[INFO] [stdout]     |                           ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/naive_midpoint_diff.rs:3:1
[INFO] [stdout]     |
[INFO] [stdout] 3   | / try_impl_unsafe_generic_const_fn_for_trait!(
[INFO] [stdout] 4   | |     MidpointViaNaiveMidpointDiffExt::midpoint_via_naive_midpoint_diff
[INFO] [stdout] 5   | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try_impl_unsafe_generic_const_fn_for_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: ~const can only be applied to `#[const_trait]` traits
[INFO] [stdout]    --> src/common_macros.rs:126:25
[INFO] [stdout]     |
[INFO] [stdout] 126 |           where T: ~const $trait_name
[INFO] [stdout]     |                           ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/primitive_promotion.rs:3:1
[INFO] [stdout]     |
[INFO] [stdout] 3   | / try_impl_generic_const_fn_for_trait!(
[INFO] [stdout] 4   | |     MidpointViaPrimitivePromotionExt::midpoint_via_primitive_promotion
[INFO] [stdout] 5   | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try_impl_generic_const_fn_for_trait` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `midpoint`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name midpoint src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8cc21900c02b0f22 -L dependency=/opt/rustwide/target/debug/deps --extern epsi=/opt/rustwide/target/debug/deps/libepsi-f1c5dec7aa33b149.rmeta --extern epui=/opt/rustwide/target/debug/deps/libepui-0f98faca0ba7ee33.rmeta --extern primitive_promotion=/opt/rustwide/target/debug/deps/libprimitive_promotion-9b4931339b274349.rmeta --cap-lints=warn --crate-version 0.1.5` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2260a1e4e5f13af82d1c77d6d3df020f3e30cdbd42958ffd79f3bb227d82163c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2260a1e4e5f13af82d1c77d6d3df020f3e30cdbd42958ffd79f3bb227d82163c", kill_on_drop: false }`
[INFO] [stdout] 2260a1e4e5f13af82d1c77d6d3df020f3e30cdbd42958ffd79f3bb227d82163c
