[INFO] fetching crate tapir-cwtch 0.1.11...
[INFO] documenting tapir-cwtch-0.1.11 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate tapir-cwtch 0.1.11 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate tapir-cwtch 0.1.11 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tapir-cwtch 0.1.11
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate tapir-cwtch 0.1.11
[INFO] tweaked toml for crates.io crate tapir-cwtch 0.1.11 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate tapir-cwtch 0.1.11 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", 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] de6e1866f0b8872b9a127eecb46e2d09fb6b68c9f7754b23fe44f57a9879ad85
[INFO] running `Command { std: "docker" "start" "-a" "de6e1866f0b8872b9a127eecb46e2d09fb6b68c9f7754b23fe44f57a9879ad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de6e1866f0b8872b9a127eecb46e2d09fb6b68c9f7754b23fe44f57a9879ad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de6e1866f0b8872b9a127eecb46e2d09fb6b68c9f7754b23fe44f57a9879ad85", kill_on_drop: false }`
[INFO] [stdout] de6e1866f0b8872b9a127eecb46e2d09fb6b68c9f7754b23fe44f57a9879ad85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] fb2a9345188fc4634eed4bbf4ec80278ef075e0ba540cb157f97be666d30b24c
[INFO] running `Command { std: "docker" "start" "-a" "fb2a9345188fc4634eed4bbf4ec80278ef075e0ba540cb157f97be666d30b24c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]     Checking integer-encoding v2.1.1
[INFO] [stderr]     Checking libc v0.2.80
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking socks v0.3.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking secretbox v0.1.2
[INFO] [stderr]    Compiling zeroize_derive v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]     Checking zeroize v1.1.1
[INFO] [stderr]     Checking curve25519-dalek v3.0.0
[INFO] [stderr]     Checking merlin v2.0.0
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking which v4.0.2
[INFO] [stderr]     Checking x25519-dalek v1.1.0
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking ed25519 v1.0.3
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]  Documenting tapir-cwtch v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(external_doc)]
[INFO] [stdout]   |            ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(array_methods)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(external_doc)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `tapir-cwtch`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tapir_cwtch src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern base32=/opt/rustwide/target/debug/deps/libbase32-12d9fc7520c93d6c.rmeta --extern base64=/opt/rustwide/target/debug/deps/libbase64-06135271d248c171.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-ff2b0737cf335338.rmeta --extern curve25519_dalek=/opt/rustwide/target/debug/deps/libcurve25519_dalek-fb83c120b7b9f7c7.rmeta --extern ed25519_dalek=/opt/rustwide/target/debug/deps/libed25519_dalek-5f16cdc05f286ec4.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-1df96b88cb790594.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-0d870bc7fdc49f01.rmeta --extern integer_encoding=/opt/rustwide/target/debug/deps/libinteger_encoding-3393170bf4f17d72.rmeta --extern merlin=/opt/rustwide/target/debug/deps/libmerlin-9adaff5defeb8537.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-39b9cdc33b03ddea.rmeta --extern secretbox=/opt/rustwide/target/debug/deps/libsecretbox-849e9d85484a0e5d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-1d6750ccfa86f4e2.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2bd74d36ef7b033d.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-e6c0243ea0db6ed8.rmeta --extern sha3=/opt/rustwide/target/debug/deps/libsha3-5cda8bbec8bf9ce3.rmeta --extern socks=/opt/rustwide/target/debug/deps/libsocks-1d3c399048239592.rmeta --extern subtle=/opt/rustwide/target/debug/deps/libsubtle-2c76555b088f1135.rmeta --extern which=/opt/rustwide/target/debug/deps/libwhich-245bee8192e9b8ed.rmeta --extern x25519_dalek=/opt/rustwide/target/debug/deps/libx25519_dalek-c377a1d68b01eb8b.rmeta --cap-lints=warn --crate-version 0.1.11` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "fb2a9345188fc4634eed4bbf4ec80278ef075e0ba540cb157f97be666d30b24c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb2a9345188fc4634eed4bbf4ec80278ef075e0ba540cb157f97be666d30b24c", kill_on_drop: false }`
[INFO] [stdout] fb2a9345188fc4634eed4bbf4ec80278ef075e0ba540cb157f97be666d30b24c
