[INFO] cloning repository https://github.com/ry00001/rustic-c
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ry00001/rustic-c" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fry00001%2Frustic-c", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fry00001%2Frustic-c'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5061a3f966ee6704efb9ddd422bc8c8f3e2b7984
[INFO] documenting ry00001/rustic-c 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%2Fry00001%2Frustic-c" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ry00001/rustic-c 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] removed /workspace/builds/worker-3/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ry00001/rustic-c
[INFO] finished tweaking git repo https://github.com/ry00001/rustic-c
[INFO] tweaked toml for git repo https://github.com/ry00001/rustic-c written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ry00001/rustic-c 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] warning: /workspace/builds/worker-3/source/runtime-c/Cargo.toml: unused manifest key: package.tags
[INFO] [stderr] warning: /workspace/builds/worker-3/source/c-macro/Cargo.toml: unused manifest key: package.tags
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 7413f15e537a11ffb84e4a0d170c17d63295777e7f8d96f3c925c901fa547fa8
[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" "7413f15e537a11ffb84e4a0d170c17d63295777e7f8d96f3c925c901fa547fa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7413f15e537a11ffb84e4a0d170c17d63295777e7f8d96f3c925c901fa547fa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7413f15e537a11ffb84e4a0d170c17d63295777e7f8d96f3c925c901fa547fa8", kill_on_drop: false }`
[INFO] [stdout] 7413f15e537a11ffb84e4a0d170c17d63295777e7f8d96f3c925c901fa547fa8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 44fefb53c6e208a5d65e185dcc298f855f4bc756f91b636ba442fc8b271cd769
[INFO] running `Command { std: "docker" "start" "-a" "44fefb53c6e208a5d65e185dcc298f855f4bc756f91b636ba442fc8b271cd769", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/runtime-c/Cargo.toml: unused manifest key: package.tags
[INFO] [stderr] warning: /opt/rustwide/workdir/c-macro/Cargo.toml: unused manifest key: package.tags
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syscalls v0.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling c-macro v0.1.0 (/opt/rustwide/workdir/c-macro)
[INFO] [stderr]     Checking runtime-c v0.1.0 (/opt/rustwide/workdir/runtime-c)
[INFO] [stderr]  Documenting runtime-c v0.1.0 (/opt/rustwide/workdir/runtime-c)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> c-macro/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> c-macro/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(extend_one)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> c-macro/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(proc_macro_span_shrink)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> c-macro/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 compile `c-macro` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "44fefb53c6e208a5d65e185dcc298f855f4bc756f91b636ba442fc8b271cd769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44fefb53c6e208a5d65e185dcc298f855f4bc756f91b636ba442fc8b271cd769", kill_on_drop: false }`
[INFO] [stdout] 44fefb53c6e208a5d65e185dcc298f855f4bc756f91b636ba442fc8b271cd769