[INFO] fetching crate libalpm-utils 0.0.2...
[INFO] testing libalpm-utils-0.0.2 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate libalpm-utils 0.0.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate libalpm-utils 0.0.2 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libalpm-utils 0.0.2
[INFO] finished tweaking crates.io crate libalpm-utils 0.0.2
[INFO] tweaked toml for crates.io crate libalpm-utils 0.0.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14638b6ebc4334ce7f83f6d60043c8c7b3ae7fb0a943336a88125847b805a519
[INFO] running `Command { std: "docker" "start" "-a" "14638b6ebc4334ce7f83f6d60043c8c7b3ae7fb0a943336a88125847b805a519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14638b6ebc4334ce7f83f6d60043c8c7b3ae7fb0a943336a88125847b805a519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14638b6ebc4334ce7f83f6d60043c8c7b3ae7fb0a943336a88125847b805a519", kill_on_drop: false }`
[INFO] [stdout] 14638b6ebc4334ce7f83f6d60043c8c7b3ae7fb0a943336a88125847b805a519
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "RUSTFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1db99964f491d353163e652bc2205aea19161291caf40e67bc771239e079e252
[INFO] running `Command { std: "docker" "start" "-a" "1db99964f491d353163e652bc2205aea19161291caf40e67bc771239e079e252", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling libalpm-utils v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trace_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ini.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | /// Matches a header line
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/ini.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | /// Matches a key and the '='
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libalpm-utils` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1db99964f491d353163e652bc2205aea19161291caf40e67bc771239e079e252", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1db99964f491d353163e652bc2205aea19161291caf40e67bc771239e079e252", kill_on_drop: false }`
[INFO] [stdout] 1db99964f491d353163e652bc2205aea19161291caf40e67bc771239e079e252
