[INFO] crate word_count 0.1.0 is already in cache
[INFO] checking word_count-0.1.0 against beta-2019-10-27 for pr-65897
[INFO] extracting crate word_count 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate word_count 0.1.0 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate word_count 0.1.0
[INFO] finished tweaking crates.io crate word_count 0.1.0
[INFO] tweaked toml for crates.io crate word_count 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=allow" "-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" "+beta-2019-10-27" "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] eaf2e441422412737d42af0155d05769221433b0f3e859b9af49538d4d4b3492
[INFO] running `"docker" "start" "-a" "eaf2e441422412737d42af0155d05769221433b0f3e859b9af49538d4d4b3492"`
[INFO] [stderr]     Checking word_count v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(collections)]
[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: 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: 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: 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: 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: 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: 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: 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: 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: 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 19 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `word_count`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(collections)]
[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: 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: 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: 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: 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: 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: 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: 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: 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: 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 19 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[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" "eaf2e441422412737d42af0155d05769221433b0f3e859b9af49538d4d4b3492"`
[INFO] running `"docker" "rm" "-f" "eaf2e441422412737d42af0155d05769221433b0f3e859b9af49538d4d4b3492"`
[INFO] [stdout] eaf2e441422412737d42af0155d05769221433b0f3e859b9af49538d4d4b3492