[INFO] cloning repository https://github.com/pearl/scrap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pearl/scrap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpearl%2Fscrap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpearl%2Fscrap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c2e83285f3a07ea19311372d6a0ed0736db96d4
[INFO] documenting pearl/scrap against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpearl%2Fscrap" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pearl/scrap on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pearl/scrap
[INFO] finished tweaking git repo https://github.com/pearl/scrap
[INFO] tweaked toml for git repo https://github.com/pearl/scrap written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/pearl/scrap already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_state_machine_future v0.2.0
[INFO] [stderr]   Downloaded darling_core v0.8.6
[INFO] [stderr]   Downloaded postgres-protocol v0.4.1
[INFO] [stderr]   Downloaded maud_htmlescape v0.17.0
[INFO] [stderr]   Downloaded maud_macros v0.20.0
[INFO] [stderr]   Downloaded maud v0.20.0
[INFO] [stderr]   Downloaded r2d2 v0.8.4
[INFO] [stderr]   Downloaded darling v0.8.6
[INFO] [stderr]   Downloaded darling_macro v0.8.6
[INFO] [stderr]   Downloaded state_machine_future v0.2.0
[INFO] [stderr]   Downloaded headers v0.2.3
[INFO] [stderr]   Downloaded tokio-postgres v0.4.0-rc.3
[INFO] [stderr]   Downloaded r2d2_postgres v0.15.0-rc.1
[INFO] [stderr]   Downloaded tokio v0.1.19
[INFO] [stderr]   Downloaded tungstenite v0.9.2
[INFO] [stderr]   Downloaded rent_to_own v0.1.0
[INFO] [stderr]   Downloaded postgres v0.16.0-rc.2
[INFO] [stderr]   Downloaded futures v0.1.26
[INFO] [stderr]   Downloaded scheduled-thread-pool v0.2.0
[INFO] [stderr]   Downloaded num-integer v0.1.40
[INFO] [stderr]   Downloaded hmac v0.7.0
[INFO] [stderr]   Downloaded literalext v0.1.1
[INFO] [stderr]   Downloaded warp v0.1.22
[INFO] [stderr]   Downloaded pulldown-cmark v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54999e1c683b80eb9050b60554ee2997c31b3c3c4187ee56b1320790a3accdf0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "54999e1c683b80eb9050b60554ee2997c31b3c3c4187ee56b1320790a3accdf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54999e1c683b80eb9050b60554ee2997c31b3c3c4187ee56b1320790a3accdf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54999e1c683b80eb9050b60554ee2997c31b3c3c4187ee56b1320790a3accdf0", kill_on_drop: false }`
[INFO] [stdout] 54999e1c683b80eb9050b60554ee2997c31b3c3c4187ee56b1320790a3accdf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27ad063ed5a1e2270148943b8d04d9f393e02ed59c8eafd336e50a869216098a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "27ad063ed5a1e2270148943b8d04d9f393e02ed59c8eafd336e50a869216098a", kill_on_drop: false }`
[INFO] [stderr]     Checking futures v0.1.26
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking rent_to_own v0.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling pulldown-cmark v0.5.2
[INFO] [stderr]    Compiling literalext v0.1.1
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]    Compiling maud_htmlescape v0.17.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/literalext-0.1.1/src/lib.rs:19:37
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![cfg_attr(feature = "proc-macro", feature(proc_macro))]
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.7
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `literalext` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "27ad063ed5a1e2270148943b8d04d9f393e02ed59c8eafd336e50a869216098a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27ad063ed5a1e2270148943b8d04d9f393e02ed59c8eafd336e50a869216098a", kill_on_drop: false }`
[INFO] [stdout] 27ad063ed5a1e2270148943b8d04d9f393e02ed59c8eafd336e50a869216098a