[INFO] cloning repository https://github.com/ThatsGobbles/cheffu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ThatsGobbles/cheffu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcheffu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcheffu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94231f8ac9f9ed33de065b2ab0e3d8809ed7dcb8
[INFO] documenting ThatsGobbles/cheffu against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcheffu" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ThatsGobbles/cheffu on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ThatsGobbles/cheffu
[INFO] finished tweaking git repo https://github.com/ThatsGobbles/cheffu
[INFO] tweaked toml for git repo https://github.com/ThatsGobbles/cheffu written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ThatsGobbles/cheffu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex-syntax v0.5.0
[INFO] [stderr]   Downloaded regex v0.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2496c26e294eef4a61f3a4a93ac15942b48780cdc44543a2b10be91a4468538
[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" "e2496c26e294eef4a61f3a4a93ac15942b48780cdc44543a2b10be91a4468538", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2496c26e294eef4a61f3a4a93ac15942b48780cdc44543a2b10be91a4468538", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2496c26e294eef4a61f3a4a93ac15942b48780cdc44543a2b10be91a4468538", kill_on_drop: false }`
[INFO] [stdout] e2496c26e294eef4a61f3a4a93ac15942b48780cdc44543a2b10be91a4468538
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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-2020-10-09" "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] 7ca7352b2cac087c68ba58c8db31e6f4bce1f6bb0fd1989a4d6348bd590f7c65
[INFO] running `Command { std: "docker" "start" "-a" "7ca7352b2cac087c68ba58c8db31e6f4bce1f6bb0fd1989a4d6348bd590f7c65", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.4
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking rustc-demangle v0.1.6
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking regex-syntax v0.5.0
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking regex v0.2.7
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking backtrace v0.3.5
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]  Documenting cheffu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `cheffu`
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(entry_or_default)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(macro_at_most_once_rep)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_ascription)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name cheffu src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-a1eabe5cd96358b7.rmeta --extern failure_derive=/opt/rustwide/target/debug/deps/libfailure_derive-04a58c45a1084007.so --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-547c1f77b4390e62.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-c7b8e4b9bbea7e16.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-fd4e51961e256aaf.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[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] running `Command { std: "docker" "inspect" "7ca7352b2cac087c68ba58c8db31e6f4bce1f6bb0fd1989a4d6348bd590f7c65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ca7352b2cac087c68ba58c8db31e6f4bce1f6bb0fd1989a4d6348bd590f7c65", kill_on_drop: false }`
[INFO] [stdout] 7ca7352b2cac087c68ba58c8db31e6f4bce1f6bb0fd1989a4d6348bd590f7c65
