[INFO] cloning repository https://github.com/steveklabnik/doxidize
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/steveklabnik/doxidize" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Fdoxidize", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Fdoxidize'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c0cd9fce983a16187cdf54b6489cf86bfe8b21c9
[INFO] testing steveklabnik/doxidize against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Fdoxidize" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/steveklabnik/doxidize on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/steveklabnik/doxidize
[INFO] finished tweaking git repo https://github.com/steveklabnik/doxidize
[INFO] tweaked toml for git repo https://github.com/steveklabnik/doxidize written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/steveklabnik/doxidize already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19826ecf7b2e265ef1d33d2e0eca966639422179fc6678e3a1fc82e24d0212f8
[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" "19826ecf7b2e265ef1d33d2e0eca966639422179fc6678e3a1fc82e24d0212f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19826ecf7b2e265ef1d33d2e0eca966639422179fc6678e3a1fc82e24d0212f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19826ecf7b2e265ef1d33d2e0eca966639422179fc6678e3a1fc82e24d0212f8", kill_on_drop: false }`
[INFO] [stdout] 19826ecf7b2e265ef1d33d2e0eca966639422179fc6678e3a1fc82e24d0212f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTFLAGS=--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" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 330db03eda1f6753e2846e9916832d797fe439b3ca6d5ad567beb48e7d82b4f2
[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" "330db03eda1f6753e2846e9916832d797fe439b3ca6d5ad567beb48e7d82b4f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.1.42
[INFO] [stderr]    Compiling pest v1.0.3
[INFO] [stderr]    Compiling unicode-segmentation v1.2.0
[INFO] [stderr]    Compiling ascii v0.7.1
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling same-file v1.0.2
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling nibble_vec v0.0.3
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling slog v2.2.3
[INFO] [stderr]    Compiling take_mut v0.2.0
[INFO] [stderr]    Compiling scoped_threadpool v0.1.8
[INFO] [stderr]    Compiling unidecode v0.3.0
[INFO] [stderr]    Compiling entities v1.0.0
[INFO] [stderr]    Compiling linked-hash-map v0.4.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.0
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling isatty v0.1.6
[INFO] [stderr]    Compiling inotify v0.3.0
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling erased-serde v0.3.3
[INFO] [stderr]    Compiling toml v0.4.5
[INFO] [stderr]    Compiling rls-span v0.4.0
[INFO] [stderr]    Compiling walkdir v2.1.4
[INFO] [stderr]    Compiling radix_trie v0.1.2
[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/rls-span-0.4.0/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(proc_macro)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling combine v3.0.0-alpha.2
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr] error: could not compile `rls-span`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "330db03eda1f6753e2846e9916832d797fe439b3ca6d5ad567beb48e7d82b4f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "330db03eda1f6753e2846e9916832d797fe439b3ca6d5ad567beb48e7d82b4f2", kill_on_drop: false }`
[INFO] [stdout] 330db03eda1f6753e2846e9916832d797fe439b3ca6d5ad567beb48e7d82b4f2
