[INFO] cloning repository https://github.com/chrisbouchard/klondike2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisbouchard/klondike2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisbouchard%2Fklondike2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisbouchard%2Fklondike2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcec4d218bb29de50e0c7908943482dc2bb5e509
[INFO] documenting chrisbouchard/klondike2 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%2Fchrisbouchard%2Fklondike2" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisbouchard/klondike2 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/chrisbouchard/klondike2
[INFO] finished tweaking git repo https://github.com/chrisbouchard/klondike2
[INFO] tweaked toml for git repo https://github.com/chrisbouchard/klondike2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisbouchard/klondike2 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 test-case v1.1.0
[INFO] [stderr]   Downloaded enum_like_derive v0.1.0
[INFO] [stderr]   Downloaded assert_matches v1.4.0
[INFO] [stderr]   Downloaded velcro v0.4.3
[INFO] [stderr]   Downloaded tui v0.13.0
[INFO] [stderr]   Downloaded syn v0.12.15
[INFO] [stderr]   Downloaded enum_like v0.2.1
[INFO] [stderr]   Downloaded velcro_core v0.4.1
[INFO] [stderr]   Downloaded velcro_macros v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6170901ea55908ae6daf5de59a2aa8cc23130a9e27262c4f4833cf51b1f17073
[INFO] running `Command { std: "docker" "start" "-a" "6170901ea55908ae6daf5de59a2aa8cc23130a9e27262c4f4833cf51b1f17073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6170901ea55908ae6daf5de59a2aa8cc23130a9e27262c4f4833cf51b1f17073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6170901ea55908ae6daf5de59a2aa8cc23130a9e27262c4f4833cf51b1f17073", kill_on_drop: false }`
[INFO] [stdout] 6170901ea55908ae6daf5de59a2aa8cc23130a9e27262c4f4833cf51b1f17073
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 217c76b6418bd7c40e2fe142b84a769bb2d794ac3d3acfcf64c554fb93196700
[INFO] running `Command { std: "docker" "start" "-a" "217c76b6418bd7c40e2fe142b84a769bb2d794ac3d3acfcf64c554fb93196700", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking enum_like v0.2.1
[INFO] [stderr]     Checking assert_matches v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking libc v0.2.80
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking tui v0.13.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling enum_like_derive v0.1.0
[INFO] [stderr]    Compiling velcro_core v0.4.1
[INFO] [stderr]    Compiling velcro_macros v0.4.1
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]     Checking velcro v0.4.3
[INFO] [stderr]     Checking snafu v0.6.10
[INFO] [stderr]     Checking klondike2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting klondike2 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `klondike2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name klondike2_lib src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5e0ce819b645cf79 -L dependency=/opt/rustwide/target/debug/deps --extern assert_matches=/opt/rustwide/target/debug/deps/libassert_matches-54c0627d94dbed52.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-5d08607f81d50478.so --extern enum_like=/opt/rustwide/target/debug/deps/libenum_like-956e5c21f846934e.rmeta --extern enum_like_derive=/opt/rustwide/target/debug/deps/libenum_like_derive-b5e05dccbfd60b3c.so --extern itertools=/opt/rustwide/target/debug/deps/libitertools-31732f101c7334d9.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-89ff0f4bfac6577b.rmeta --extern snafu=/opt/rustwide/target/debug/deps/libsnafu-a0dadc28e0d85f82.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-4e53eee0e9a01b37.rmeta --extern tui=/opt/rustwide/target/debug/deps/libtui-39d85ee04b8c6009.rmeta --extern velcro=/opt/rustwide/target/debug/deps/libvelcro-2f2b25a3384b8a64.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 compile `klondike2` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "217c76b6418bd7c40e2fe142b84a769bb2d794ac3d3acfcf64c554fb93196700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "217c76b6418bd7c40e2fe142b84a769bb2d794ac3d3acfcf64c554fb93196700", kill_on_drop: false }`
[INFO] [stdout] 217c76b6418bd7c40e2fe142b84a769bb2d794ac3d3acfcf64c554fb93196700