[INFO] cloning repository https://github.com/Flarp/DoIWannaKnow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Flarp/DoIWannaKnow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlarp%2FDoIWannaKnow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlarp%2FDoIWannaKnow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d9fda6cba04811ee907a5855bb2ba1c05dc0d39
[INFO] documenting Flarp/DoIWannaKnow against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlarp%2FDoIWannaKnow" "/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/Flarp/DoIWannaKnow on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Flarp/DoIWannaKnow
[INFO] finished tweaking git repo https://github.com/Flarp/DoIWannaKnow
[INFO] tweaked toml for git repo https://github.com/Flarp/DoIWannaKnow written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Flarp/DoIWannaKnow already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread_local v0.3.4
[INFO] [stderr]   Downloaded num-traits v0.1.40
[INFO] [stderr]   Downloaded dotenv_codegen v0.10.0
[INFO] [stderr]   Downloaded r2d2 v0.7.4
[INFO] [stderr]   Downloaded handlebars v0.27.0
[INFO] [stderr]   Downloaded glob v0.2.11
[INFO] [stderr]   Downloaded scheduled-thread-pool v0.1.0
[INFO] [stderr]   Downloaded pest v0.3.3
[INFO] [stderr]   Downloaded rocket_contrib v0.3.3
[INFO] [stderr]   Downloaded matches v0.1.6
[INFO] [stderr]   Downloaded percent-encoding v1.0.0
[INFO] [stderr]   Downloaded url v1.5.1
[INFO] [stderr]   Downloaded utf8-ranges v1.0.0
[INFO] [stderr]   Downloaded time v0.1.38
[INFO] [stderr]   Downloaded isatty v0.1.5
[INFO] [stderr]   Downloaded rand v0.3.17
[INFO] [stderr]   Downloaded cfg-if v0.1.2
[INFO] [stderr]   Downloaded httparse v1.2.3
[INFO] [stderr]   Downloaded lazy_static v0.2.9
[INFO] [stderr]   Downloaded utf8-ranges v0.1.3
[INFO] [stderr]   Downloaded memchr v0.1.11
[INFO] [stderr]   Downloaded backtrace v0.3.3
[INFO] [stderr]   Downloaded dotenv v0.10.1
[INFO] [stderr]   Downloaded diesel_codegen v0.16.0
[INFO] [stderr]   Downloaded cc v1.0.1
[INFO] [stderr]   Downloaded diesel_infer_schema v0.16.0
[INFO] [stderr]   Downloaded coco v0.1.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.31
[INFO] [stderr]   Downloaded dotenv_macros v0.10.0
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded derive-error-chain v0.10.1
[INFO] [stderr]   Downloaded rustc-demangle v0.1.5
[INFO] [stderr]   Downloaded ordermap v0.2.13
[INFO] [stderr]   Downloaded hyper v0.10.13
[INFO] [stderr]   Downloaded regex-syntax v0.3.9
[INFO] [stderr]   Downloaded aho-corasick v0.5.3
[INFO] [stderr]   Downloaded libc v0.2.32
[INFO] [stderr]   Downloaded regex v0.1.80
[INFO] [stderr]   Downloaded diesel v0.16.0
[INFO] [stderr]   Downloaded futures v0.1.16
[INFO] [stderr]   Downloaded regex-syntax v0.4.1
[INFO] [stderr]   Downloaded pear_codegen v0.0.10
[INFO] [stderr]   Downloaded thread-id v2.0.0
[INFO] [stderr]   Downloaded serde_json v1.0.3
[INFO] [stderr]   Downloaded gcc v0.3.54
[INFO] [stderr]   Downloaded idna v0.1.4
[INFO] [stderr]   Downloaded quick-error v1.2.1
[INFO] [stderr]   Downloaded itoa v0.3.4
[INFO] [stderr]   Downloaded base64 v0.6.0
[INFO] [stderr]   Downloaded serde v1.0.15
[INFO] [stderr]   Downloaded dbghelp-sys v0.2.0
[INFO] [stderr]   Downloaded pq-sys v0.4.4
[INFO] [stderr]   Downloaded r2d2-diesel v0.16.0
[INFO] [stderr]   Downloaded memchr v1.0.1
[INFO] [stderr]   Downloaded thread_local v0.2.7
[INFO] [stderr]   Downloaded either v1.2.0
[INFO] [stderr]   Downloaded dotenv v0.8.0
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.2.0
[INFO] [stderr]   Downloaded aho-corasick v0.6.3
[INFO] [stderr]   Downloaded fuchsia-zircon v0.2.1
[INFO] [stderr]   Downloaded state v0.3.2
[INFO] [stderr]   Downloaded rayon-core v1.2.1
[INFO] [stderr]   Downloaded num_cpus v1.7.0
[INFO] [stderr]   Downloaded log v0.3.8
[INFO] [stderr]   Downloaded pear v0.0.10
[INFO] [stderr]   Downloaded toml v0.4.5
[INFO] [stderr]   Downloaded untrusted v0.5.1
[INFO] [stderr]   Downloaded synom v0.11.3
[INFO] [stderr]   Downloaded vcpkg v0.2.2
[INFO] [stderr]   Downloaded version_check v0.1.3
[INFO] [stderr]   Downloaded yansi v0.3.4
[INFO] [stderr]   Downloaded rocket v0.3.3
[INFO] [stderr]   Downloaded cookie v0.9.2
[INFO] [stderr]   Downloaded unicode-xid v0.0.4
[INFO] [stderr]   Downloaded byteorder v1.1.0
[INFO] [stderr]   Downloaded rayon v0.7.1
[INFO] [stderr]   Downloaded serde_derive v1.0.15
[INFO] [stderr]   Downloaded syn v0.11.11
[INFO] [stderr]   Downloaded serde_derive_internals v0.16.0
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded rocket_codegen v0.3.3
[INFO] [stderr]   Downloaded regex v0.2.2
[INFO] [stderr]   Downloaded unicode-normalization v0.1.5
[INFO] [stderr]   Downloaded backtrace-sys v0.1.15
[INFO] [stderr]   Downloaded smallvec v0.4.4
[INFO] [stderr]   Downloaded ring v0.11.0
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16ccc15c91a4beda821b41464e45a5f10a58a0b2414dd2be569f028af66ae5e1
[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" "16ccc15c91a4beda821b41464e45a5f10a58a0b2414dd2be569f028af66ae5e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16ccc15c91a4beda821b41464e45a5f10a58a0b2414dd2be569f028af66ae5e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16ccc15c91a4beda821b41464e45a5f10a58a0b2414dd2be569f028af66ae5e1", kill_on_drop: false }`
[INFO] [stdout] 16ccc15c91a4beda821b41464e45a5f10a58a0b2414dd2be569f028af66ae5e1
[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" "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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70e4773bbc9128a1ec93c63df29994c0bf3d48919cd64ba476689825828956bc
[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" "70e4773bbc9128a1ec93c63df29994c0bf3d48919cd64ba476689825828956bc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.32
[INFO] [stderr]    Compiling lazy_static v0.2.9
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling cc v1.0.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling either v1.2.0
[INFO] [stderr]    Compiling futures v0.1.16
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling pq-sys v0.4.4
[INFO] [stderr]    Compiling yansi v0.3.4
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling cfg-if v0.1.2
[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/yansi-0.3.4/src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature="nightly", feature(const_atomic_bool_new))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]     Checking serde v1.0.15
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[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 `yansi`.
[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" "70e4773bbc9128a1ec93c63df29994c0bf3d48919cd64ba476689825828956bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70e4773bbc9128a1ec93c63df29994c0bf3d48919cd64ba476689825828956bc", kill_on_drop: false }`
[INFO] [stdout] 70e4773bbc9128a1ec93c63df29994c0bf3d48919cd64ba476689825828956bc