[INFO] fetching crate retour 0.1.0...
[INFO] documenting retour-0.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate retour 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate retour 0.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate retour 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate retour 0.1.0
[INFO] tweaked toml for crates.io crate retour 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate retour 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded slice-pool v0.4.1
[INFO] [stderr]   Downloaded mmap-fixed-fixed v0.1.3
[INFO] [stderr]   Downloaded region v3.0.0
[INFO] [stderr]   Downloaded libudis86-sys v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f01a319558304fabc59a7db775b7226c561292a4ab50f8edb3aeb1271aeb8b36
[INFO] running `Command { std: "docker" "start" "-a" "f01a319558304fabc59a7db775b7226c561292a4ab50f8edb3aeb1271aeb8b36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f01a319558304fabc59a7db775b7226c561292a4ab50f8edb3aeb1271aeb8b36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f01a319558304fabc59a7db775b7226c561292a4ab50f8edb3aeb1271aeb8b36", kill_on_drop: false }`
[INFO] [stdout] f01a319558304fabc59a7db775b7226c561292a4ab50f8edb3aeb1271aeb8b36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbabab17f3aa966661014911cb1b51ad417456a42a228fa31085733bf11b08d7
[INFO] running `Command { std: "docker" "start" "-a" "bbabab17f3aa966661014911cb1b51ad417456a42a228fa31085733bf11b08d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling cc v1.0.76
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking slice-pool v0.4.1
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling libudis86-sys v0.2.1
[INFO] [stderr]     Checking mmap-fixed-fixed v0.1.3
[INFO] [stderr]     Checking region v3.0.0
[INFO] [stderr]  Documenting retour v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   feature(unboxed_closures, abi_thiscall, tuple_trait)
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `retour`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name retour src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="nightly"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=97ae503177195e14 -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-ccf07012d6cfa4eb.rmeta --extern generic_array=/opt/rustwide/target/debug/deps/libgeneric_array-5a50b6b7456a1b01.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-9c7d51f549cf58b7.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-d4c8145f15856044.rmeta --extern udis=/opt/rustwide/target/debug/deps/liblibudis86_sys-bbc77e54cd54dda2.rmeta --extern mmap=/opt/rustwide/target/debug/deps/libmmap_fixed_fixed-24ae2ec86aac4619.rmeta --extern region=/opt/rustwide/target/debug/deps/libregion-18b5ebeb99630b21.rmeta --extern slice_pool=/opt/rustwide/target/debug/deps/libslice_pool-b9df4df5c479c3f7.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "bbabab17f3aa966661014911cb1b51ad417456a42a228fa31085733bf11b08d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbabab17f3aa966661014911cb1b51ad417456a42a228fa31085733bf11b08d7", kill_on_drop: false }`
[INFO] [stdout] bbabab17f3aa966661014911cb1b51ad417456a42a228fa31085733bf11b08d7
