[INFO] fetching crate msdb 0.4.0...
[INFO] documenting msdb-0.4.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate msdb 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate msdb 0.4.0 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 crates.io crate msdb 0.4.0
[INFO] finished tweaking crates.io crate msdb 0.4.0
[INFO] tweaked toml for crates.io crate msdb 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate msdb 0.4.0 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 7a05589c41b5f4e87f8401ffa0815bf8d386ee7315b550d550c6989a9b310413
[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" "7a05589c41b5f4e87f8401ffa0815bf8d386ee7315b550d550c6989a9b310413", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a05589c41b5f4e87f8401ffa0815bf8d386ee7315b550d550c6989a9b310413", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a05589c41b5f4e87f8401ffa0815bf8d386ee7315b550d550c6989a9b310413", kill_on_drop: false }`
[INFO] [stdout] 7a05589c41b5f4e87f8401ffa0815bf8d386ee7315b550d550c6989a9b310413
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 08ae2a7fba79bfa84255c9efa42843f7471f5bf01c839daa517e2c917e84a607
[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" "08ae2a7fba79bfa84255c9efa42843f7471f5bf01c839daa517e2c917e84a607", kill_on_drop: false }`
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking hex v0.4.1
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking rpassword v4.0.5
[INFO] [stderr]    Compiling libflate v0.1.27
[INFO] [stderr]     Checking rustyline v6.0.0
[INFO] [stderr]    Compiling filetime v0.2.8
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling libsodium-sys v0.2.5
[INFO] [stderr]     Checking sodiumoxide v0.2.5
[INFO] [stderr]  Documenting msdb v0.4.0 (/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(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 `msdb`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name msdb 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-75ea384b1f7f2595.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-957ab3d9398eae49.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-b06567b7f4bc9adc.rmeta --extern rpassword=/opt/rustwide/target/debug/deps/librpassword-696a1e47cf3188fa.rmeta --extern rustyline=/opt/rustwide/target/debug/deps/librustyline-4e7da61663162ae7.rmeta --extern sodiumoxide=/opt/rustwide/target/debug/deps/libsodiumoxide-d5f11160ca47ad61.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "08ae2a7fba79bfa84255c9efa42843f7471f5bf01c839daa517e2c917e84a607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08ae2a7fba79bfa84255c9efa42843f7471f5bf01c839daa517e2c917e84a607", kill_on_drop: false }`
[INFO] [stdout] 08ae2a7fba79bfa84255c9efa42843f7471f5bf01c839daa517e2c917e84a607