[INFO] fetching crate rusty-release 0.7.0...
[INFO] checking rusty-release-0.7.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate rusty-release 0.7.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rusty-release 0.7.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rusty-release 0.7.0
[INFO] finished tweaking crates.io crate rusty-release 0.7.0
[INFO] tweaked toml for crates.io crate rusty-release 0.7.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3bd9cdf590ecddff0883b0e528d8f4de79f10dc3cb1b3f89f92765fbac9c4f9c
[INFO] running `"docker" "start" "-a" "3bd9cdf590ecddff0883b0e528d8f4de79f10dc3cb1b3f89f92765fbac9c4f9c"`
[INFO] [stderr]     Checking rusty-release v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/version_kind.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  |   /// A part of a semver version: Major.Minor.Patch
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 4  | / arg_enum! {
[INFO] [stderr] 5  | |     #[derive(Eq, PartialEq, Debug)]
[INFO] [stderr] 6  | |     pub enum VersionKind {
[INFO] [stderr] 7  | |         // increments the major part of the version
[INFO] [stderr] ...  |
[INFO] [stderr] 18 | |     }
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/version_kind.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  |   /// A part of a semver version: Major.Minor.Patch
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 4  | / arg_enum! {
[INFO] [stderr] 5  | |     #[derive(Eq, PartialEq, Debug)]
[INFO] [stderr] 6  | |     pub enum VersionKind {
[INFO] [stderr] 7  | |         // increments the major part of the version
[INFO] [stderr] ...  |
[INFO] [stderr] 18 | |     }
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `"docker" "inspect" "3bd9cdf590ecddff0883b0e528d8f4de79f10dc3cb1b3f89f92765fbac9c4f9c"`
[INFO] running `"docker" "rm" "-f" "3bd9cdf590ecddff0883b0e528d8f4de79f10dc3cb1b3f89f92765fbac9c4f9c"`
[INFO] [stdout] 3bd9cdf590ecddff0883b0e528d8f4de79f10dc3cb1b3f89f92765fbac9c4f9c