[INFO] cloning repository https://github.com/lbcdec/lbcdec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lbcdec/lbcdec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flbcdec%2Flbcdec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flbcdec%2Flbcdec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db7d3f95ae6dac9e6d9e1b86829896954abea6d1
[INFO] documenting lbcdec/lbcdec 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%2Flbcdec%2Flbcdec" "/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/lbcdec/lbcdec 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/lbcdec/lbcdec
[INFO] finished tweaking git repo https://github.com/lbcdec/lbcdec
[INFO] tweaked toml for git repo https://github.com/lbcdec/lbcdec written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/lbcdec/lbcdec 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] [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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67042b096469efeda0fff302426c1b7b53c0c2956fe290578fb4dd6bba4237f2
[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" "67042b096469efeda0fff302426c1b7b53c0c2956fe290578fb4dd6bba4237f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67042b096469efeda0fff302426c1b7b53c0c2956fe290578fb4dd6bba4237f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67042b096469efeda0fff302426c1b7b53c0c2956fe290578fb4dd6bba4237f2", kill_on_drop: false }`
[INFO] [stdout] 67042b096469efeda0fff302426c1b7b53c0c2956fe290578fb4dd6bba4237f2
[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" "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] fbeee9f917836cfd3888823106b4666ac5fc0166c76abb65187311ffaffe32d5
[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" "fbeee9f917836cfd3888823106b4666ac5fc0166c76abb65187311ffaffe32d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking remove_dir_all v0.5.0
[INFO] [stderr]     Checking obstack v0.1.3
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rand v0.5.4
[INFO] [stderr]     Checking smallvec v0.6.3
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking regex v1.0.0
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking tempfile v3.0.3
[INFO] [stderr]     Checking env_logger v0.5.10
[INFO] [stderr]  Documenting lbcdec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(test)]
[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 `lbcdec`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name lbcdec 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 clap=/opt/rustwide/target/debug/deps/libclap-e37c1a711c95b6be.rmeta --extern either=/opt/rustwide/target/debug/deps/libeither-44a94906303ffdcb.rmeta --extern enum_primitive=/opt/rustwide/target/debug/deps/libenum_primitive-7af2ced2e09186d2.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-5507db2d25f29541.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-732e50766ae135c1.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-397e1955e55f6855.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-4a9bcdd8620a45f3.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-84d368f8feffd104.rmeta --extern obstack=/opt/rustwide/target/debug/deps/libobstack-7ee0bfab653dc43a.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-5e9a1ebec8013e91.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-689598e0444f1cca.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-7a1996f01902fbee.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "fbeee9f917836cfd3888823106b4666ac5fc0166c76abb65187311ffaffe32d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbeee9f917836cfd3888823106b4666ac5fc0166c76abb65187311ffaffe32d5", kill_on_drop: false }`
[INFO] [stdout] fbeee9f917836cfd3888823106b4666ac5fc0166c76abb65187311ffaffe32d5