[INFO] cloning repository https://github.com/osa1/ghc-prof-compare
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/osa1/ghc-prof-compare" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosa1%2Fghc-prof-compare", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosa1%2Fghc-prof-compare'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f88efc26969b0c0fae74dbaad35c34cd94332ed9
[INFO] documenting osa1/ghc-prof-compare against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosa1%2Fghc-prof-compare" "/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/osa1/ghc-prof-compare on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/osa1/ghc-prof-compare
[INFO] finished tweaking git repo https://github.com/osa1/ghc-prof-compare
[INFO] tweaked toml for git repo https://github.com/osa1/ghc-prof-compare written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/osa1/ghc-prof-compare already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "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] 550aed8be0aa22e5ba984e252aa7088ce9347f646c0abd50a1dff446ca2be9c6
[INFO] running `Command { std: "docker" "start" "-a" "550aed8be0aa22e5ba984e252aa7088ce9347f646c0abd50a1dff446ca2be9c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "550aed8be0aa22e5ba984e252aa7088ce9347f646c0abd50a1dff446ca2be9c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "550aed8be0aa22e5ba984e252aa7088ce9347f646c0abd50a1dff446ca2be9c6", kill_on_drop: false }`
[INFO] [stdout] 550aed8be0aa22e5ba984e252aa7088ce9347f646c0abd50a1dff446ca2be9c6
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54bb71b3c3dad6582b9181e5ca0e1d7bfce2bfa0ba6831a126b2ce05d9575fd0
[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" "54bb71b3c3dad6582b9181e5ca0e1d7bfce2bfa0ba6831a126b2ce05d9575fd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking regex-syntax v0.6.16
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking rustyline v6.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking ghc-utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting ghc-utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> bin/obj_loc.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(or_patterns)]
[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 `ghc-utils`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name obj_loc bin/obj_loc.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-a4535ac1495c8e48.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-d4a587b550fd2910.rmeta --extern ghc_utils=/opt/rustwide/target/debug/deps/libghc_utils-08ee50c57215bd4e.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-57a7edc7f441d44c.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-339d11ec6248ec7c.rmeta --extern rustyline=/opt/rustwide/target/debug/deps/librustyline-b184b36321ce1481.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-8a5bfb47f7b64522.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2323510bb72f3543.rmeta --cap-lints=warn` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "54bb71b3c3dad6582b9181e5ca0e1d7bfce2bfa0ba6831a126b2ce05d9575fd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54bb71b3c3dad6582b9181e5ca0e1d7bfce2bfa0ba6831a126b2ce05d9575fd0", kill_on_drop: false }`
[INFO] [stdout] 54bb71b3c3dad6582b9181e5ca0e1d7bfce2bfa0ba6831a126b2ce05d9575fd0