[INFO] updating cached repository kballard/swift-demangle.alfredworkflow
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kballard/swift-demangle.alfredworkflow
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kballard/swift-demangle.alfredworkflow" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/kballard/swift-demangle.alfredworkflow"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/kballard/swift-demangle.alfredworkflow'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kballard/swift-demangle.alfredworkflow" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/kballard/swift-demangle.alfredworkflow"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/kballard/swift-demangle.alfredworkflow'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a4e35dc90c60e684ce18c34381ef2a8e3a3592d
[INFO] sha for GitHub repo kballard/swift-demangle.alfredworkflow: 4a4e35dc90c60e684ce18c34381ef2a8e3a3592d
[INFO] validating manifest of kballard/swift-demangle.alfredworkflow on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kballard/swift-demangle.alfredworkflow on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kballard/swift-demangle.alfredworkflow
[INFO] finished frobbing kballard/swift-demangle.alfredworkflow
[INFO] frobbed toml for kballard/swift-demangle.alfredworkflow written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/kballard/swift-demangle.alfredworkflow/Cargo.toml
[INFO] started frobbing kballard/swift-demangle.alfredworkflow
[INFO] finished frobbing kballard/swift-demangle.alfredworkflow
[INFO] frobbed toml for kballard/swift-demangle.alfredworkflow written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/kballard/swift-demangle.alfredworkflow/Cargo.toml
[INFO] crate kballard/swift-demangle.alfredworkflow already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/kballard/swift-demangle.alfredworkflow/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kballard/swift-demangle.alfredworkflow against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-5/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/kballard/swift-demangle.alfredworkflow:/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=forbid" "-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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e21c7b44795e4014609b316c4ecb1d46a43637aa52772c2ac140074a501bd1b6
[INFO] running `"docker" "start" "-a" "e21c7b44795e4014609b316c4ecb1d46a43637aa52772c2ac140074a501bd1b6"`
[INFO] [stderr]     Checking alfred v0.2.2
[INFO] [stderr] error[E0658]: The attribute `unsafe_destructor` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/alfred-0.2.2/src/lib.rs:547:3
[INFO] [stderr]     |
[INFO] [stderr] 547 | #[unsafe_destructor]
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr]     = help: add #![feature(custom_attribute)] to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::borrow::IntoCow`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/alfred-0.2.2/src/lib.rs:59:24
[INFO] [stderr]    |
[INFO] [stderr] 59 | use std::borrow::{Cow, IntoCow};
[INFO] [stderr]    |                        ^^^^^^^ no `IntoCow` in `borrow`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `alfred`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e21c7b44795e4014609b316c4ecb1d46a43637aa52772c2ac140074a501bd1b6"`
[INFO] running `"docker" "rm" "-f" "e21c7b44795e4014609b316c4ecb1d46a43637aa52772c2ac140074a501bd1b6"`
[INFO] [stdout] e21c7b44795e4014609b316c4ecb1d46a43637aa52772c2ac140074a501bd1b6