[INFO] cloning repository https://github.com/Ryan1729/stru
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ryan1729/stru" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyan1729%2Fstru", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyan1729%2Fstru'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90178bbfabd23bf881b8fcd1ebbd8d85d57ae793
[INFO] documenting Ryan1729/stru 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%2FRyan1729%2Fstru" "/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/Ryan1729/stru 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/Ryan1729/stru
[INFO] finished tweaking git repo https://github.com/Ryan1729/stru
[INFO] tweaked toml for git repo https://github.com/Ryan1729/stru written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Ryan1729/stru 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] 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] 6aea4a99d4e89d491e8cfb09c076256af4acf0679e5fdedbf312f59f4ff7e9a2
[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" "6aea4a99d4e89d491e8cfb09c076256af4acf0679e5fdedbf312f59f4ff7e9a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aea4a99d4e89d491e8cfb09c076256af4acf0679e5fdedbf312f59f4ff7e9a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aea4a99d4e89d491e8cfb09c076256af4acf0679e5fdedbf312f59f4ff7e9a2", kill_on_drop: false }`
[INFO] [stdout] 6aea4a99d4e89d491e8cfb09c076256af4acf0679e5fdedbf312f59f4ff7e9a2
[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] 2e0249422df6545de3a51db8abaa1385135f25d9e6f4a66acd77c5cbc60179ab
[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" "2e0249422df6545de3a51db8abaa1385135f25d9e6f4a66acd77c5cbc60179ab", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gcc v0.3.43
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.2
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]    Compiling cmake v0.1.21
[INFO] [stderr]     Checking errno v0.2.3
[INFO] [stderr]    Compiling stru v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling x11 v2.12.1
[INFO] [stderr]    Compiling expat-sys v2.1.4
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.3
[INFO] [stderr]     Checking servo-fontconfig v0.2.1
[INFO] [stderr]  Documenting stru 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(link_args)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drop_types_in_const)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `stru`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name stru 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 errno=/opt/rustwide/target/debug/deps/liberrno-0c6faaa2f592b07a.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-489f07ffb607f63a.rmeta --extern fontconfig=/opt/rustwide/target/debug/deps/libfontconfig-6903abdc86f99a12.rmeta --extern x11=/opt/rustwide/target/debug/deps/libx11-6425003a4befa92a.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "2e0249422df6545de3a51db8abaa1385135f25d9e6f4a66acd77c5cbc60179ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0249422df6545de3a51db8abaa1385135f25d9e6f4a66acd77c5cbc60179ab", kill_on_drop: false }`
[INFO] [stdout] 2e0249422df6545de3a51db8abaa1385135f25d9e6f4a66acd77c5cbc60179ab