[INFO] updating cached repository https://github.com/Leo2807/word_count
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec71d65588b4e45bd2251a189b62d7c80bb640aa
[INFO] checking Leo2807/word_count against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeo2807%2Fword_count" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Leo2807/word_count on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Leo2807/word_count
[INFO] finished tweaking git repo https://github.com/Leo2807/word_count
[INFO] tweaked toml for git repo https://github.com/Leo2807/word_count written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Leo2807/word_count already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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] e8ac08f08238c5ef98e547c4f47ea14ab70f1b25fe15841a15f8cb1d99bdfac2
[INFO] running `"docker" "start" "-a" "e8ac08f08238c5ef98e547c4f47ea14ab70f1b25fe15841a15f8cb1d99bdfac2"`
[INFO] [stderr]     Checking word_count v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/pivot_sort.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     #[stable]
[INFO] [stderr]    |     ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/pivot_sort.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/pivot_sort.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]  --> src/pivot_sort.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![stable]
[INFO] [stderr]   | ^^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/word_index.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/word_index.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]  --> src/word_index.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![stable]
[INFO] [stderr]   | ^^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]   --> src/lib.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![unstable]
[INFO] [stderr]   | ^^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![unstable]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/pivot_sort.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![stable]
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/pivot_sort.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/pivot_sort.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     #[stable]
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/pivot_sort.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/word_index.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![stable]
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/word_index.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/word_index.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/lib.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/pivot_sort.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     #[stable]
[INFO] [stderr]    |     ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/pivot_sort.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/pivot_sort.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]  --> src/pivot_sort.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![stable]
[INFO] [stderr]   | ^^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/word_index.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]   --> src/word_index.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `stable` attribute input
[INFO] [stderr]  --> src/word_index.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![stable]
[INFO] [stderr]   | ^^^^^^^^^^ help: must be of the form: `#[stable(feature = "name", since = "version")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]   --> src/lib.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![unstable]
[INFO] [stderr]   | ^^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![unstable]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/pivot_sort.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![stable]
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/pivot_sort.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/pivot_sort.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     #[stable]
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/pivot_sort.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/word_index.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![stable]
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/word_index.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/word_index.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | #[stable]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/lib.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0734`.
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0734`.
[INFO] [stderr] error: could not compile `word_count`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `word_count`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e8ac08f08238c5ef98e547c4f47ea14ab70f1b25fe15841a15f8cb1d99bdfac2"`
[INFO] running `"docker" "rm" "-f" "e8ac08f08238c5ef98e547c4f47ea14ab70f1b25fe15841a15f8cb1d99bdfac2"`
[INFO] [stdout] e8ac08f08238c5ef98e547c4f47ea14ab70f1b25fe15841a15f8cb1d99bdfac2
