[INFO] crate word_count 0.1.0 is already in cache [INFO] extracting crate word_count 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/word_count/0.1.0 [INFO] extracting crate word_count 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/word_count/0.1.0 [INFO] validating manifest of word_count-0.1.0 on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of word_count-0.1.0 on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing word_count-0.1.0 [INFO] finished frobbing word_count-0.1.0 [INFO] frobbed toml for word_count-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/word_count/0.1.0/Cargo.toml [INFO] started frobbing word_count-0.1.0 [INFO] finished frobbing word_count-0.1.0 [INFO] frobbed toml for word_count-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/word_count/0.1.0/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing word_count-0.1.0 against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/word_count/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 68c11dc1e254cdb3db345aed1102ae82f26b1d0590e428de103ca461b508d999 [INFO] running `"docker" "start" "-a" "68c11dc1e254cdb3db345aed1102ae82f26b1d0590e428de103ca461b508d999"` [INFO] [stderr] Compiling word_count v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable 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" "68c11dc1e254cdb3db345aed1102ae82f26b1d0590e428de103ca461b508d999"` [INFO] running `"docker" "rm" "-f" "68c11dc1e254cdb3db345aed1102ae82f26b1d0590e428de103ca461b508d999"` [INFO] [stdout] 68c11dc1e254cdb3db345aed1102ae82f26b1d0590e428de103ca461b508d999