[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] checking steveklabnik/doxidize against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteveklabnik%2Fdoxidize" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/steveklabnik/doxidize on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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-7/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" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b72add5cfd713fbf87a9df127af42bfdac55892c11487ca7baea66602dddc6f1
[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" "b72add5cfd713fbf87a9df127af42bfdac55892c11487ca7baea66602dddc6f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b72add5cfd713fbf87a9df127af42bfdac55892c11487ca7baea66602dddc6f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b72add5cfd713fbf87a9df127af42bfdac55892c11487ca7baea66602dddc6f1", kill_on_drop: false }`
[INFO] [stdout] b72add5cfd713fbf87a9df127af42bfdac55892c11487ca7baea66602dddc6f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fc68177f883dde2e9cf44115abf32679c236c3effb18ac411c4d3eb7fa62f91
[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" "9fc68177f883dde2e9cf44115abf32679c236c3effb18ac411c4d3eb7fa62f91", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking num-traits v0.1.42
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]    Compiling cc v1.0.4
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]    Compiling pest v1.0.3
[INFO] [stderr]    Compiling unicode-segmentation v1.2.0
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking nibble_vec v0.0.3
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking slog v2.2.3
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking take_mut v0.2.0
[INFO] [stderr]     Checking unidecode v0.3.0
[INFO] [stderr]     Checking entities v1.0.0
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking typed-arena v1.3.0
[INFO] [stderr]     Checking linked-hash-map v0.4.2
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking remove_dir_all v0.5.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking radix_trie v0.1.2
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]     Checking combine v3.0.0-alpha.2
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking inotify v0.3.0
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking filetime v0.1.15
[INFO] [stderr]     Checking isatty v0.1.6
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking clap v2.29.4
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking twoway v0.1.7
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking slugify v0.1.0
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking regex v0.2.5
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking http v0.1.4
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking rls-span v0.4.0
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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] [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 `rls-span`.
[INFO] [stderr] 
[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" "9fc68177f883dde2e9cf44115abf32679c236c3effb18ac411c4d3eb7fa62f91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fc68177f883dde2e9cf44115abf32679c236c3effb18ac411c4d3eb7fa62f91", kill_on_drop: false }`
[INFO] [stdout] 9fc68177f883dde2e9cf44115abf32679c236c3effb18ac411c4d3eb7fa62f91
